Chrysler Grand Voyager 2005 Workshop Manual

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Page 1

SERVICE MANUAL

2005

TOWN & COUNTRY

AND CARAVAN

To order the special service tools used and illustrated, please refer to the instructions on inside back cover.

NO PART OF THIS PUBLICATION MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM, OR TRANSMITTED, IN ANY FORM OR BY ANY MEANS, ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING, OR OTHERWISE, WITHOUT THE PRIOR WRITTEN PERMISSION OF DAIMLERCHRYSLER CORPORATION.

DaimlerChrysler Corporation reserves the right to make changes in design or to make additions to or improvements in its products without imposing any obligations upon itself to install them on its products previously manufactured.

Page 2

FOREWORD

The information contained in this service manual has been prepared for the professional automotive technician involved in daily repair operations. Information describing the operation and use of standard and optional equipment is included in the Owner’s Manual provided with the vehicle.

Information in this manual is divided into groups. These groups contain description, operation, diagnosis, testing, adjustments, removal, installation, disassembly, and assembly procedures for the systems and components. To assist in locating a group title page, use the Group Tab Locator by clicking on the following page. The solid bar after the group title is aligned to a solid tab on the first page of each group. The first page of the group has a contents section that lists major topics within the group. If you are not sure which Group contains the information you need, look up the Component/System in the alphabetical index located in the rear of this manual.

A Service Manual Comment form is included at the rear of this manual. Use the form to provide DaimlerChrysler Corporation with your comments and suggestions.

Tightening torques are provided as a specific value throughout this manual. This value represents the midpoint of the acceptable engineering torque range for a given fastener application. These torque values are intended for use in service assembly and installation procedures using the correct OEM fasteners. When replacing fasteners, always use the same type (part number) fastener as removed.

DaimlerChrysler Corporation reserves the right to change testing procedures, specifications, diagnosis, repair methods, or vehicle wiring at any time without prior notice or incurring obligation.

Page 3

Welcome

Service Manual

Body

Chassis

Transmission

Powertrain

2.5L / 2.8L Diesel  Supplement

Diesel 

Powertrain

2005 RG Town & Country and Caravan

Technical Publications

Click on the icon for the desired manual

Page 4

TABLE OF CONTENTS

1.0 INTRODUCTION .........................................................1

1.1 SYSTEM COVERAGE ...............................................1

1.2 SIX-STEP TROUBLESHOOTING PROCEDURE ..........................1

2.0 IDENTIFICATION OF SYSTEM .............................................1

3.0 SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION......................1

3.1 ADJUSTABLE PEDALS SYSTEM ......................................2

3.2 AIRBAG SYSTEM/OCCUPANT RESTRAINT CONTROLLER SYSTEM AND

OCCUPANT CLASSIFICATION SYSTEM ................................2

3.2.1 DRIVER AIRBAG............................................3

3.2.2 CLOCKSPRING.............................................4

3.2.3 PASSENGER AIRBAG .......................................4

3.2.4 SEAT BELT TENSIONER (SBT)................................6

3.2.5 SEAT BELT SWITCHES (SBS).................................6

3.2.6 DRIVER KNEE BLOCKER AIRBAG.............................6

3.2.7 FRONT AND SIDE IMPACT SENSOR...........................6

3.2.8 OCCUPANT CLASSIFICATION SYSTEM ........................6

3.2.9 SPECIAL TOOLS............................................9

3.2.10 DIAGNOSTIC TROUBLE CODES ..............................9

3.2.10.1 ACTIVE CODES ............................................9

3.2.10.2 STORED CODES ...........................................9

3.3 AUDIO SYSTEM ...................................................10

3.3.1 NAVIGATION RADIO........................................10

3.3.2 REMOTE RADIO CONTROLS ................................10

3.3.3 CD CHANGER.............................................11

3.3.4 DVD/CD CHANGER ........................................11

3.4 BODY CONTROL MODULE ..........................................11

3.5 CHIME WARNING SYSTEM .........................................12

3.5.1 CHIME PRIORITY..........................................12

3.5.2 CHIME ON CONDITIONS....................................12

3.5.3 WARNING LAMP ANNOUNCEMENT ..........................13

3.5.4 OTHER CHIME ON CONDITIONS.............................13

3.6 COMMUNICATION .................................................13

3.7 DOOR AJAR SYSTEM ..............................................15

3.8 EXTERIOR LIGHTING SYSTEM ......................................15

3.8.1 HEADLAMP POWER .......................................15

3.8.2 HEADLAMP SWITCH .......................................15

3.8.3 PARK LAMP RELAY ........................................15

3.8.4 FOG LAMP RELAY.........................................15

3.8.5 FOG LAMPS ..............................................15

3.8.6 EXTERIOR LIGHTING BATTERY SAVER.......................16

3.8.7 AUTO HEADLAMPS ........................................16

3.9 FRONT CONTROL MODULE.........................................16

3.9.1 CONTROLLED POWER FEEDS ..............................16

3.9.2 RELAY CONTROLS ........................................17

3.9.3 ELECTRICAL INPUTS ......................................18

3.10 HEATING & A/C SYSTEM ...........................................19

3.10.1 AUTOMATIC TEMPERATURE CONTROL (ATC) .................19

3.10.1.1 MODULE USAGE ..........................................19

3.10.1.2 SYSTEM AVAILABILITY .....................................19

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TABLE OF CONTENTS - Continued

3.10.1.3 SYSTEM CONTROLS.......................................19

3.10.1.4 SYSTEM REVISIONS .......................................20

3.10.1.5 SYSTEM DIAGNOSTICS ....................................20

3.10.2 MANUAL TEMPERATURE CONTROL (MTC)....................21

3.10.2.1 MODULE USAGE ..........................................21

3.10.2.2 SYSTEM AVAILABILITY .....................................21

3.10.2.3 SYSTEM CONTROLS.......................................22

3.10.2.4 SYSTEM REVISIONS .......................................23

3.10.2.5 SYSTEM DIAGNOSTICS ....................................23

3.11 CABIN HEATER ...................................................24

3.11.1 GENERAL SAFETY INFORMATION ...........................24

3.11.2 COMPONENT DESCRIPTION AND OPERATION ................25

3.11.2.1 DCHA ASSEMBLY..........................................25

3.11.2.2 COMBUSTION AIR FAN.....................................25

3.11.2.3 BURNER HOUSING ........................................25

3.11.2.4 BURNER INSERT ..........................................25

3.11.2.5 CONTROL UNIT/HEAT EXCHANGER..........................25

3.11.2.6 DOSING PUMP ............................................25

3.11.3 OPERATION ..............................................25

3.11.3.1 VENTING THE DCHA’S EXHAUST............................25

3.11.3.2 ACTIVATION ..............................................26

3.11.3.3 HEATING.................................................27

3.11.3.4 DEACTIVATION............................................27

3.11.3.5 SYSTEM REVISIONS .......................................27

3.11.4 DIAGNOSTICS ............................................27

3.12 INSTRUMENT CLUSTER............................................27

3.12.1 INSTRUMENT CLUSTER SELF TEST .........................28

3.12.2 MESSAGE CENTER (EXPORT ONLY).........................28

3.13 INTERIOR LIGHTING ...............................................28

3.13.1 COURTESY LAMP CONTROL................................28

3.13.2 ILLUMINATED ENTRY ......................................28

3.13.3 INTERIOR LIGHTING BATTERY SAVER .......................28

3.14 MEMORY SYSTEM.................................................28

3.14.1 POWER SEAT.............................................29

3.14.2 MEMORY MIRROR.........................................29

3.15 OVERHEAD CONSOLE .............................................29

3.15.1 VEHICLE INFORMATION DISPLAY............................30

3.15.2 TRAVELER DISPLAY FUNCTIONS ............................31

3.15.3 SETTING MAGNETIC ZONE VARIANCE .......................31

3.15.4 COMPASS CALIBRATION ...................................32

3.15.5 SELF-CHECK DIAGNOSTICS ................................32

3.15.6 AMBIENT TEMPERATURE SENSOR ..........................32

3.15.7 AMBIENT TEMPERATURE SENSOR FAULT CODES .............33

3.15.8 HOMELINKT UNIVERSAL TRANSMITTER......................33

3.15.9 TIRE PRESSURE MONITORING SYSTEM (TPMS)...............33

3.15.9.1 TRAINING THE SKREEM....................................33

3.15.9.2 PRESSURE THRESHOLDS..................................34

3.15.9.3 ACTIVE FAULT AND SYSTEM ALERTS ........................34

3.16 PARK ASSIST SYSTEM .............................................34

3.17 POWER DOOR LOCK SYSTEM ......................................34

3.17.1 DOOR LOCK INHIBIT.......................................34

3.17.2 AUTOMATIC DOOR LOCKS .................................35

3.17.3 REMOTE KEYLESS ENTRY (RKE)............................35

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TABLE OF CONTENTS - Continued

3.17.3.1 PANIC FUNCTION .........................................35

3.17.3.2 ROLLING CODE ...........................................35

3.17.3.3 PROGRAMMABLE DOOR LOCK FEATURES ...................35

3.18 POWER FOLDING MIRRORS ........................................36

3.19 POWER LIFTGATE SYSTEM.........................................36

3.19.1 POWER LIFTGATE.........................................36

3.19.2 DIAGNOSTIC FEATURES ...................................36

3.19.3 SYSTEM INHIBITORS ......................................36

3.20 POWER SLIDING DOOR SYSTEM....................................36

3.20.1 POWER SLIDING DOOR ....................................36

3.20.2 DIAGNOSTIC FEATURES ...................................37

3.20.3 SYSTEM INHIBITORS ......................................37

3.21 REAR WINDOW DEFOG/HEATED MIRROR/FRONT WIPER DE-ICE (IF

EQUIPPED).......................................................37

3.22 TELECOMMUNICATIONS ...........................................37

3.22.1 HANDS FREE PHONE ......................................37

3.23 VEHICLE THEFT SECURITY SYSTEM.................................38

3.23.1 THATCHAM ALARM SYSTEM (EXPORT ONLY) .................38

3.24 WIPER SYSTEM...................................................38

3.24.1 FRONT WIPER ............................................38

3.24.2 SPEED SENSITIVE INTERMITTENT WIPE MODE ...............39

3.24.3 PULSE WIPE..............................................39

3.24.4 PARK AFTER IGNITION OFF.................................39

3.24.5 WIPE AFTER WASH........................................39

3.24.6 REAR WIPER .............................................39

3.24.7 SPEED SENSITIVE INTERMITTENT WIPE MODE ...............39

3.24.8 WIPE AFTER WASH........................................39

3.25 USING THE DRBIIIT ................................................39

3.26 DRBIIIT ERROR MESSAGES ........................................39

3.27 DRBIIIT DOES NOT POWER UP (BLANK SCREEN)......................39

3.28 DISPLAY IS NOT VISIBLE ...........................................39

4.0 DISCLAIMERS, SAFETY, WARNINGS ......................................40

4.1 DISCLAIMERS.....................................................40

4.2 SAFETY..........................................................40

4.2.1 TECHNICIAN SAFETY INFORMATION.........................40

4.2.2 VEHICLE PREPARATION FOR TESTING.......................40

4.2.3 SERVICING SUB-ASSEMBLIES ..............................40

4.2.4 DRBIIIT SAFETY INFORMATION .............................40

4.3 WARNINGS.......................................................41

4.3.1 VEHICLE DAMAGE WARNINGS ..............................41

4.3.2 ROAD TESTING A COMPLAINT VEHICLE......................41

5.0 REQUIRED TOOLS AND EQUIPMENT .....................................41

6.0 GLOSSARY OF TERMS..................................................41

iii

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TABLE OF CONTENTS - Continued

7.0 DIAGNOSTIC INFORMATION AND PROCEDURES ..........................43

ADJUSTABLE PEDALS

PEDAL SENSOR OPEN/SHORTED TO GROUND.............................44

PEDAL SENSOR SHORTED TO BATTERY ..................................47

PEDAL SW STUCK FORWARD............................................50

PEDAL SW STUCK REARWARD ..........................................52

*CAN’T ADJUST PEDALS ................................................54

*CAN’T SET/RECALL MEMORY POSITIONS.................................59

AIRBAG

ACCELEROMETER 1....................................................61

ACCELEROMETER 2....................................................61

INTERNAL 1 ...........................................................61

INTERNAL 2 ...........................................................61

INTERNAL 3 ...........................................................61

INTERNAL 4 ...........................................................61

MODULE NOT CONFIGURED FOR OCS....................................61

OUTPUT DRIVER 1 .....................................................61

OUTPUT DRIVER 2 .....................................................61

STORED ENERGY FIRING 1..............................................61

AIRBAG WARNING INDICATOR OPEN .....................................64

AIRBAG WARNING INDICATOR SHORT ....................................64

CALIBRATION MISMATCH................................................67

CLUSTER MESSAGE MISMATCH .........................................69

DRIVER KNEE BLOCKER CIRCUIT OPEN ..................................71

DRIVER KNEE BLOCKER CIRCUIT SHORT .................................74

DRIVER KNEE BLOCKER SHORT TO BATTERY .............................77

DRIVER KNEE BLOCKER SHORT TO GROUND .............................80

DRIVER SEAT BELT SWITCH CIRCUIT OPEN ...............................83

DRIVER SEAT BELT SWITCH SHORT TO BATTERY ..........................86

DRIVER SEAT BELT SWITCH SHORT TO GROUND ..........................89

DRIVER SEAT BELT SWITCH SHORT TOGETHER ...........................91

DRIVER SEAT BELT TENSIONER CIRCUIT OPEN............................93

DRIVER SEAT BELT TENSIONER CIRCUIT SHORT ..........................96

DRIVER SEAT BELT TENSIONER SHORT TO BATTERY.......................99

DRIVER SEAT BELT TENSIONER SHORT TO GROUND......................102

DRIVER SQUIB 1 CIRCUIT OPEN ........................................105

DRIVER SQUIB 1 CIRCUIT SHORT .......................................108

DRIVER SQUIB 1 SHORT TO BATTERY ...................................111

DRIVER SQUIB 1 SHORT TO GROUND ...................................114

DRIVER SQUIB 2 CIRCUIT OPEN ........................................117

DRIVER SQUIB 2 CIRCUIT SHORT .......................................120

DRIVER SQUIB 2 SHORT TO BATTERY ...................................123

DRIVER SQUIB 2 SHORT TO GROUND ...................................126

INTERROGATE OCM ...................................................129

LEFT CURTAIN OR SEAT SQUIB CIRCUIT OPEN ...........................131

LEFT CURTAIN OR SEAT SQUIB CIRCUIT SHORT ..........................134

LEFT CURTAIN OR SEAT SQUIB SHORT TO BATTERY ......................137

LEFT CURTAIN OR SEAT SQUIB SHORT TO GROUND ......................140

LEFT FRONT IMPACT SENSOR INTERNAL 1...............................143

NO LEFT FRONT IMPACT SENSOR COMMUNICATION ......................143

LEFT SIDE IMPACT SENSOR 1 INTERNAL 1 ...............................147

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TABLE OF CONTENTS - Continued

NO LEFT SIDE IMPACT SENSOR 1 COMMUNICATION.......................147

LEFT SIDE IMPACT SENSOR 2 INTERNAL 1 ...............................151

NO LEFT SIDE IMPACT SENSOR 2 COMMUNICATION.......................151

LEFT SIDE IMPACT SENSOR 3 INTERNAL 1 ...............................155

NO LEFT SIDE IMPACT SENSOR 3 COMMUNICATION.......................155

LOSS OF IGNITION RUN - START........................................159

ORC RUN - START DRIVER OPEN .......................................159

ORC RUN - START DRIVER OVER CURRENT..............................159

ORC RUN - START DRIVER OVER TEMP..................................159

ORC RUN - START DRIVER OVER VOLT ..................................159

ORC RUN - START DRIVER SHORT TO GROUND ..........................159

LOSS OF IGNITION RUN ONLY ..........................................165

ORC RUN ONLY DRIVER OPEN..........................................165

ORC RUN ONLY DRIVER OVER CURRENT ................................165

ORC RUN ONLY DRIVER OVER TEMP ....................................165

ORC RUN ONLY DRIVER OVER VOLT ....................................165

ORC RUN ONLY DRIVER SHORT TO GROUND.............................165

NO CLUSTER MESSAGE ...............................................171

NO OCM MESSAGE....................................................173

NO ODOMETER MESSAGE .............................................175

NO ORC MESSAGE ....................................................178

NO PCI LOOPBACK ....................................................181

PCI BUS SHORT TO BATTERY...........................................181

PCI BUS SHORT TO GROUND...........................................181

NO PCI TRANSMISSION ................................................187

NO RIGHT FRONT IMPACT SENSOR COMMUNICATION.....................189

RIGHT FRONT IMPACT SENSOR INTERNAL 1 .............................189

NO RIGHT SIDE IMPACT SENSOR 1 COMMUNICATION .....................193

RIGHT SIDE IMPACT SENSOR 1 INTERNAL 1..............................193

NO RIGHT SIDE IMPACT SENSOR 2 COMMUNICATION .....................197

RIGHT SIDE IMPACT SENSOR 2 INTERNAL 1..............................197

NO RIGHT SIDE IMPACT SENSOR 3 COMMUNICATION .....................201

RIGHT SIDE IMPACT SENSOR 3 INTERNAL 1..............................201

OCCUPANT CLASSIFICATION MODULE DATA TRANSFER ERROR ............205

OCCUPANT CLASSIFICATION UNDETERMINED............................207

RE-ZERO INCOMPLETE ................................................207

SEAT NOT CALIBRATED................................................207

SYSTEM VERIFICATION REQUIRED - OCSVR .............................207

OCM CONFIGURATION MISMATCH.......................................212

PASSENGER AIRBAG OFF INDICATOR CIRCUIT SHORT TO BATTERY ........214

PASSENGER AIRBAG OFF INDICATOR CIRCUIT SHORT TO GROUND.........217

PASSENGER BTS OPEN................................................222

PASSENGER BTS SHORT TO BATTERY...................................222

PASSENGER BTS SHORT TO GROUND...................................222

PASSENGER BTS SHORT TOGETHER....................................222

PASSENGER PRESSURE SENSOR OPEN.................................226

PASSENGER PRESSURE SENSOR SHORT GROUND .......................226

PASSENGER PRESSURE SENSOR SHORT TO BATTERY....................226

PASSENGER PRESSURE SENSOR SHORT TOGETHER .....................226

PASSENGER SEAT BELT SWITCH CIRCUIT OPEN..........................229

PASSENGER SEAT BELT SWITCH SHORT TO BATTERY.....................231

PASSENGER SEAT BELT SWITCH SHORT TO GROUND.....................234

PASSENGER SEAT BELT SWITCH SHORT TOGETHER ......................237

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TABLE OF CONTENTS - Continued

PASSENGER SEAT BELT TENSIONER CIRCUIT OPEN ......................239

PASSENGER SEAT BELT TENSIONER CIRCUIT SHORT .....................242

PASSENGER SEAT BELT TENSIONER SHORT TO BATTERY .................245

PASSENGER SEAT BELT TENSIONER SHORT TO GROUND .................248

PASSENGER SEAT SENSOR FLUID LEVEL TOO LOW.......................250

PASSENGER SQUIB 1 CIRCUIT OPEN ....................................251

PASSENGER SQUIB 1 CIRCUIT SHORT...................................254

PASSENGER SQUIB 1 SHORT TO BATTERY...............................257

PASSENGER SQUIB 1 SHORT TO GROUND ...............................260

PASSENGER SQUIB 2 CIRCUIT OPEN ....................................263

PASSENGER SQUIB 2 CIRCUIT SHORT...................................266

PASSENGER SQUIB 2 SHORT TO BATTERY...............................269

PASSENGER SQUIB 2 SHORT TO GROUND ...............................272

POWER SUPPLY VOLTAGE LOW.........................................275

RIGHT CURTAIN OR SEAT SQUIB CIRCUIT OPEN ..........................278

RIGHT CURTAIN OR SEAT SQUIB CIRCUIT SHORT.........................281

RIGHT CURTAIN OR SEAT SQUIB SHORT TO BATTERY.....................284

RIGHT CURTAIN OR SEAT SQUIB SHORT TO GROUND .....................287

VEHICLE BODY STYLE MISMATCH.......................................290

VIN MISMATCH........................................................293

*AIRBAG INDICATOR ON WITHOUT ACTIVE TROUBLE CODES...............297

AUDIO

ALL OUTPUTS SHORT .................................................298

CASSETTE PLAYER INOP ..............................................301

CD MECHANICAL FAILURE .............................................301

NO PCI TRANSMISSION ................................................301

REAR TRANSMITTER FAILURE ..........................................301

*AM/FM SWITCH INOPERATIVE..........................................301

*ANY STATION PRESET SWITCH INOPERATIVE............................301

*BALANCE INOPERATIVE...............................................301

*CD EJECT SWITCH INOPERATIVE.......................................301

*EQUALIZER INOPERATIVE .............................................301

*FADER INOPERATIVE .................................................301

*FF/RW SWITCH INOPERATIVE..........................................301

*HOUR/MINUTE SWITCHES INOPERATIVE ................................301

*PAUSE/PLAY SWITCH INOPERATIVE ....................................301

*PWR SWITCH INOPERATIVE ...........................................301

*SCAN SWITCH INOPERATIVE ..........................................301

*SEEK SWITCH INOPERATIVE...........................................301

*SET SWITCH INOPERATIVE ............................................301

*TAPE EJECT SWITCH INOPERATIVE.....................................301

*TIME SWITCH INOPERATIVE ...........................................301

*TUNE SWITCH INOPERATIVE...........................................301

CD CHANGER MECHANICAL FAILURE....................................303

CD CHANGER READ FAILURE...........................................304

CD CHANGER TEMPERATURE HIGH .....................................305

CD PLAY FAILURE.....................................................306

CD READ FAILURE ....................................................307

CD TEMPERATURE HIGH...............................................308

GPS ANTENNA NOT CONNECTED .......................................309

LOW VOLTAGE LEVEL .................................................310

NBS OUTPUT 1 OPEN..................................................311

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TABLE OF CONTENTS - Continued

NBS OUTPUT 2 OPEN..................................................311

NBS OUTPUT 1 SHORT TO BATT ........................................313

NBS OUTPUT 2 SHORT TO BATT ........................................313

NO ANTENNA CONNECTION ............................................315

NO COMMUNICATION WITH BCM ........................................316

POWER AMP SHUTDOWN ..............................................317

RADIO AND NAV GPS ANTENNA NOT CONNECTED ........................320

REMOTE RADIO SWITCH STUCK ........................................321

*REMOTE RADIO CONTROLS INOPERATIVE ..............................324

AUTOMATIC TEMPERATURE CONTROL

AC PRESSURE TOO HIGH (ACTIVE)......................................327

AC PRESSURE TOO HIGH (STORED).....................................328

DRIVER BLEND DOOR NOT RESPONDING (STORED) ......................328

DRIVER BLEND DOOR RANGE TOO LARGE (STORED) .....................328

DRIVER BLEND DOOR TRAVEL TOO SMALL (STORED) .....................328

EVAP TEMP SENSOR OPEN (STORED) ...................................328

EVAP TEMP SENSOR SHORTED (STORED) ...............................328

FRONT IR SENSOR AND CONTROL HEAD MISMATCH (STORED).............328

FRONT IR SENSOR CHANGE TOO LARGE (STORED).......................328

FRONT IR SENSOR HIGH (STORED) .....................................328

FRONT IR SENSOR LOW (STORED)......................................328

FRONT IR SENSOR NOT CALIBRATED (STORED)..........................328

FRONT KEYBOARD COMMUNICATION FAULT (STORED) ....................328

FRONT KEYBOARD FAULT (STORED) ....................................328

FRONT MODE DOOR NOT RESPONDING (STORED)........................328

FRONT MODE DOOR TRAVEL TOO LARGE (STORED) ......................328

FRONT MODE DOOR TRAVEL TOO SMALL (STORED) ......................328

PASS BLEND DOOR NOT RESPONDING (STORED).........................328

PASS BLEND DOOR TRAVEL TOO LARGE (STORED) .......................328

PASS BLEND DOOR TRAVEL TOO SMALL (STORED) .......................328

PCI BUS SHORTED HIGH (STORED) .....................................328

PCI BUS SHORTED LOW (STORED)......................................328

REAR BLEND DOOR NOT RESPONDING (STORED) ........................328

REAR BLEND DOOR RANGE TOO LARGE (STORED) .......................328

REAR BLEND DOOR TRAVEL TOO SMALL (STORED) .......................328

REAR FAN POT OPEN (STORED) ........................................328

REAR FAN POT SHORTED (STORED) ....................................328

REAR KEYBOARD FAULT (STORED) .....................................328

REAR MODE DOOR NOT RESPONDING (STORED).........................328

REAR MODE DOOR TRAVEL TOO LARGE (STORED) .......................328

REAR MODE DOOR TRAVEL TOO SMALL (STORED)........................328

REAR MODE POT OPEN (STORED) ......................................328

REAR MODE POT SHORTED (STORED) ..................................328

RECIRC DOOR NOT RESPONDING (STORED) .............................328

RECIRC DOOR TRAVEL TOO LARGE (STORED)............................328

RECIRC DOOR TRAVEL TOO SMALL (STORED)............................328

COOLDOWN TEST FAILED..............................................335

DRIVER BLEND DOOR NOT RESPONDING (ACTIVE) .......................337

DRIVER BLEND DOOR TRAVEL TOO LARGE (ACTIVE) ......................339

DRIVER BLEND DOOR TRAVEL TOO SMALL (ACTIVE) ......................340

EEPROM CHECKSUM ERROR (ACTIVE) ..................................342

EVAP TEMP SENSOR OPEN (ACTIVE) ....................................343

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TABLE OF CONTENTS - Continued

EVAP TEMP SENSOR SHORTED (ACTIVE) ................................347

FRONT AND REAR BLOWER OUTPUT 1 OPEN ............................349

FRONT AND REAR BLOWER OUTPUT 2 OPEN ............................349

FRONT AND REAR BLOWER OUTPUT 1 SHORT TO BATT ...................350

FRONT AND REAR BLOWER OUTPUT 2 SHORT TO BATT ...................350

FRONT IR SENSOR AND CONTROL HEAD MISMATCH (ACTIVE)..............351

FRONT IR SENSOR CHANGE TOO LARGE (ACTIVE)........................351

FRONT IR SENSOR HIGH (ACTIVE) ......................................351

FRONT IR SENSOR LOW (ACTIVE).......................................351

FRONT IR SENSOR NOT CALIBRATED (ACTIVE) ...........................352

FRONT KEYBOARD FAULT (ACTIVE) .....................................352

FRONT KEYBOARD COMMUNICATION FAULT (ACTIVE) .....................357

FRONT MODE DOOR NOT RESPONDING (ACTIVE).........................358

FRONT MODE DOOR TRAVEL TOO LARGE (ACTIVE) .......................360

FRONT MODE DOOR TRAVEL TOO SMALL (ACTIVE) .......................361

INVALID CONDITIONS FOR COOLDOWN TEST, EVAP TEMPERATURE TOO

LOW.................................................................362

PASS BLEND DOOR NOT RESPONDING (ACTIVE)..........................365

PASS BLEND DOOR TRAVEL TOO LARGE (ACTIVE) ........................367

PASS BLEND DOOR TRAVEL TOO SMALL (ACTIVE) ........................368

PCI BUS SHORTED HIGH (ACTIVE) ......................................370

PCI BUS SHORTED LOW (ACTIVE).......................................370

REAR BLEND DOOR NOT RESPONDING (ACTIVE) .........................371

REAR BLEND DOOR TRAVEL TOO LARGE (ACTIVE)........................373

REAR BLEND DOOR TRAVEL TOO SMALL (ACTIVE) ........................374

REAR FAN POT OPEN (ACTIVE) .........................................375

REAR FAN POT SHORTED (ACTIVE) .....................................375

REAR MODE POT OPEN (ACTIVE) .......................................375

REAR MODE POT SHORTED (ACTIVE) ...................................375

REAR KEYBOARD FAULT (ACTIVE) ......................................376

REAR MODE DOOR NOT RESPONDING (ACTIVE)..........................380

REAR MODE DOOR TRAVEL TOO LARGE (ACTIVE) ........................382

REAR MODE DOOR TRAVEL TOO SMALL (ACTIVE).........................383

RECIRC DOOR NOT RESPONDING (ACTIVE) ..............................384

RECIRC DOOR TRAVEL TOO LARGE (ACTIVE).............................386

RECIRC DOOR TRAVEL TOO SMALL (ACTIVE).............................387

*ATC HEAD LED(S)/BACK LIGHTING INOPERATIVE.........................388

*FRONT BLOWER MOTOR INOPERATIVE .................................390

*FRONT BLOWER RUNS AT ONLY ONE SPEED ............................396

*HVAC SYSTEM TEST..................................................398

*REAR ATC SWITCH LED(S)/BACK LIGHTING INOPERATIVE .................402

*REAR BLOWER MOTOR INOPERATIVE ..................................404

*REAR BLOWER RUNS AT ONLY ONE SPEED .............................410

CABIN HEATER

A. CABIN HEATER PRE-TEST ...........................................412

CABIN HEATER CONTROL CIRCUIT OPEN (STORED).......................412

CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (STORED)..........412

B1000 CONTROL UNIT ERRONEOUS.....................................416

B1800 NO START......................................................417

B1801 FLAME OUT: DURING HEATING CYCLE .............................417

B1801 FLAME OUT: UNSTABLE OPERATION...............................417

B1802 POWER SUPPLY OUT OF RANGE: LOW VOLTAGE THRESHOLD........421

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TABLE OF CONTENTS - Continued

B1802 POWER SUPPLY OUT OF RANGE: VOLTAGE ABOVE 15.5 VOLTS.......424

B1803 FLAME DETECTED PRIOR TO COMBUSTION ........................425

B1811 HEATER OVERHEATED...........................................426

B1813 HEATER IN LOCKOUT MODE......................................430

B1820 DOSING PUMP CIRCUIT: OPEN OR SHORT TO BATTERY .............433

B1820 DOSING PUMP CIRCUIT: SHORT TO GROUND.......................436

B1821 COMBUSTION AIR FAN CIRCUIT: OPEN.............................439

B1821 COMBUSTION AIR FAN CIRCUIT: SHORT TO GROUND................439

B1822 GLOW PIN/FLAME SENSOR: OPEN ................................440

B1822 GLOW PIN/FLAME SENSOR: SHORT TO GROUND ...................440

B1823 WATER PUMP CIRCUIT: OPEN.....................................441

B1823 WATER PUMP CIRCUIT: SHORT TO GROUND........................441

B1824 FAN SWITCH LINE SHORT TO GROUND ............................442

CABIN HEATER CONTROL CIRCUIT OPEN (ACTIVE)........................443

CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (ACTIVE)...........447

*CABIN HEATER INOPERABLE FROM A/C - HEATER MODULE (MTC) .........450

*CABIN HEATER INOPERABLE FROM AUTO TEMP CONTROL (ATC) ..........452

CHIME

*CHIME INOPERATIVE..................................................455

*KEY IN IGNITION AND DRIVER’S DOOR OPEN CHIME NOT OPERATING

PROPERLY ...........................................................457

*PROBLEM WITH THE VEHICLE SPEED WARNING CHIME...................458

COMMUNICATION

APM MESSAGES NOT RECEIVED........................................459

ATC MODULE MESSAGES NOT RECEIVED................................460

AUDIO MESSAGES NOT RECEIVED......................................461

BCM, PCI BUS SHORTED TO BATTERY...................................462

BCM, PCI BUS SHORTED TO GROUND ...................................462

FCM, PCI BUS SHORTED TO BATTERY...................................462

FCM, PCI BUS SHORTED TO GROUND ...................................462

COUNTRY CODE NOT PROGRAMMED ...................................464

FCM MESSAGES NOT RECEIVED........................................465

FCM, BCM COMMUNICATION FAULT .....................................466

FCM, HVAC COMMUNICATION FAULT ....................................467

FCM, PCI INTERNAL FAULT .............................................468

FCM, PCM COMMUNICATION FAULT .....................................469

FCM, RADIO COMMUNICATION FAULT ...................................471

FCM, TCM COMMUNICATION FAULT .....................................472

INTERNAL BCM FAILURE ...............................................473

LEFT PSD MESSAGES NOT RECEIVED...................................474

LIFTGATE MODULE MESSAGES NOT RECEIVED...........................476

MIC MESSAGES NOT RECEIVED ........................................478

MSM MESSAGES NOT RECEIVED .......................................480

ORC MESSAGES NOT RECEIVED........................................481

OTIS MODULE MESSAGE MISMATCH ....................................482

OTIS MODULE MESSAGES NOT RECEIVED ...............................484

PCI INTERNAL HARDWARE FAILURE.....................................485

PCM MESSAGES NOT RECEIVED........................................486

RADIO MEM MSG NOT RECEIVED .......................................488

RIGHT PSD MESSAGES NOT RECEIVED..................................489

SKIM (SKREEM) MESSAGES NOT RECEIVED..............................491

Page 13

TABLE OF CONTENTS - Continued

TCM MESSAGES NOT RECEIVED........................................492

*NO RESPONSE FROM AMPLIFIER ......................................493

*NO RESPONSE FROM AUTOMATIC TEMPERATURE CONTROL MODULE .....495

*NO RESPONSE FROM BODY CONTROL MODULE .........................497

*NO RESPONSE FROM CABIN HEATER ASSIST - DIESEL ONLY..............499

*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE ...................501

*NO RESPONSE FROM ECM (PCI BUS) - DIESEL ONLY .....................503

*NO RESPONSE FROM ECM (SCI ONLY) - DIESEL ONLY....................504

*NO RESPONSE FROM FRONT CONTROL MODULE ........................506

*NO RESPONSE FROM HANDS FREE MODULE............................508

*NO RESPONSE FROM HVAC ...........................................510

*NO RESPONSE FROM INSTRUMENT CLUSTER ...........................512

*NO RESPONSE FROM LEFT SLIDING DOOR CONTROL MODULE............515

*NO RESPONSE FROM MEMORY SEAT/MIRROR/ADJUSTABLE PEDALS

MODULE .............................................................518

*NO RESPONSE FROM OCCUPANT CLASSIFICATION MODULE ..............520

*NO RESPONSE FROM OCCUPANT RESTRAINT CONTROLLER ..............522

*NO RESPONSE FROM OVERHEAD CONSOLE ............................524

*NO RESPONSE FROM PARK ASSIST MODULE............................526

*NO RESPONSE FROM PCM (PCI BUS) - NGC.............................528

*NO RESPONSE FROM PCM (PCM SCI ONLY) - NGC .......................529

*NO RESPONSE FROM POWER LIFTGATE MODULE .......................532

*NO RESPONSE FROM RADIO ..........................................535

*NO RESPONSE FROM RIGHT SLIDING DOOR CONTROL MODULE ..........537

*NO RESPONSE FROM SENTRY KEY REMOTE ENTRY MODULE.............540

*NO RESPONSE FROM THATCHAM ALARM MODULE.......................542

*NO RESPONSE FROM TRANSMISSION CONTROL MODULE - EATX (DIESEL) .544

*NO RESPONSE FROM TRANSMISSION CONTROL MODULE - NGC ..........547

*PCI BUS COMMUNICATION FAILURE ....................................550

DOOR AJAR

*HOOD AJAR CIRCUIT OPEN (EXPORT ONLY) .............................553

*HOOD AJAR CIRCUIT SHORTED TO GROUND (EXPORT ONLY) .............554

*LEFT FRONT DOOR AJAR SWITCH SENSE CIRCUIT OPEN .................555

*LEFT FRONT DOOR AJAR SWITCH SENSE CIRCUIT SHORTED TO GROUND. .556

*LEFT SLIDING DOOR AJAR SWITCH SENSE CIRCUIT OPEN ................557

*LEFT SLIDING DOOR AJAR SWITCH SENSE CIRCUIT SHORTED TO

GROUND.............................................................559

*LIFTGATE AJAR CIRCUIT OPEN.........................................560

*LIFTGATE AJAR CIRCUIT SHORTED TO GROUND .........................561

*RIGHT FRONT DOOR AJAR SWITCH SENSE CIRCUIT OPEN ................562

*RIGHT FRONT DOOR AJAR SWITCH SENSE CIRCUIT SHORTED TO

GROUND.............................................................563

*RIGHT SLIDING DOOR AJAR CIRCUIT OPEN .............................564

*RIGHT SLIDING DOOR AJAR CIRCUIT SHORTED TO GROUND ..............566

ELECTRICALLY HEATED SYSTEMS

EBL RUN ONLY RELAY OPEN ...........................................567

EBL RUN ONLY RELAY SHORTED TO BATTERY............................569

Page 14

TABLE OF CONTENTS - Continued

EXTERIOR LIGHTING

BACKUP LAMP OUTPUT OPEN ..........................................570

BACKUP LAMP OUTPUT SHORT.........................................572

FRONT FOG LAMP RELAY OPEN ........................................573

FRONT FOG LAMP SHORTED TO BATTERY ...............................575

HEADLAMP SWITCH MISMATCH.........................................576

HEADLAMP SWITCH OPEN .............................................577

HEADLAMP SWITCH SHORT TO GROUND ................................579

HIGH BEAM SWITCH INPUT OPEN .......................................581

HIGH BEAM SWITCH INPUT SHORT......................................583

LEFT FRONT TURN SIGNAL OUTPUT OPEN...............................585

LEFT FRONT TURN SIGNAL OUTPUT SHORT..............................587

LEFT HIGH BEAM HEADLAMP CIRCUIT OPEN .............................589

LEFT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO GROUND .............591

LEFT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE .............593

LEFT LOW BEAM HEADLAMP CIRCUIT OPEN .............................595

LEFT LOW BEAM HEADLAMP CIRCUIT SHORTED TO GROUND..............597

LEFT LOW BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE..............599

LEFT REAR TURN SIGNAL OUTPUT OPEN ................................601

LEFT REAR TURN SIGNAL OUTPUT SHORT...............................603

LEFT SIDE PARK LAMP OPEN...........................................605

PARK LAMP OUTPUT 1 OPEN ...........................................607

PARK LAMP OUTPUT 1 SHORT TO BATTERY..............................609

PARK LAMP OUTPUT 2 OPEN ...........................................610

PARK LAMP OUTPUT 2 SHORT TO BATTERY..............................612

RIGHT FRONT TURN SIGNAL OUTPUT OPEN..............................613

RIGHT FRONT TURN SIGNAL OUTPUT SHORT ............................615

RIGHT HIGH BEAM HEADLAMP CIRCUIT OPEN............................617

RIGHT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO GROUND ............619

RIGHT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE ............621

RIGHT LOW BEAM HEADLAMP CIRCUIT OPEN ............................623

RIGHT LOW BEAM HEADLAMP CIRCUIT SHORTED TO GROUND.............625

RIGHT LOW BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE ............627

RIGHT REAR TURN SIGNAL OUTPUT OPEN...............................629

RIGHT REAR TURN SIGNAL OUTPUT SHORT..............................631

RIGHT SIDE PARK LAMP OPEN..........................................633

TURN SIGNAL SWITCH INPUT OPEN .....................................635

TURN SIGNAL SWITCH INPUT SHORT....................................637

HEATING & A/C

A/C SWITCH FAULT (ACTIVE) - MTC......................................639

CHECKSUM FAILURE (ACTIVE) - MTC ....................................639

DEFOG SWITCH FAULT (ACTIVE) - MTC ..................................639

POWER SWITCH FAULT (ACTIVE) - MTC..................................639

REAR WIPER WASHER SWITCH FAULT (ACTIVE) - MTC ....................639

RECIRC SWITCH FAULT (ACTIVE) - MTC..................................639

A/C SWITCH FAULT (STORED) - MTC.....................................641

BACKLIGHT DIMMING RX FAILURE (STORED) - MTC .......................641

BLEND OVERCURRENT (STORED) - MTC .................................641

CHECKSUM FAILURE (STORED) - MTC ...................................641

DEFOG SWITCH FAULT (STORED) - MTC .................................641

EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN (STORED) - MTC.....641

EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT (STORED) - MTC. . . .641

Page 15

TABLE OF CONTENTS - Continued

LOOPBACK TEST FAILURE (STORED) - MTC ..............................641

MODE OVERCURRENT (STORED) - MTC .................................641

NO FUEL LEVEL MESSAGE RECEIVED (STORED) - MTC ....................641

PCM COMMUNICATION FAILURE (STORED) - MTC .........................641

POWER SWITCH FAULT (STORED) - MTC.................................641

REAR BLEND OVERCURRENT (STORED) - MTC ...........................641

REAR BLEND POT CIRCUIT OPEN (STORED) - MTC........................641

REAR BLEND POT CIRCUIT SHORT (STORED) - MTC.......................641

REAR MODE OVERCURRENT (STORED) - MTC............................641

REAR WIPER WASHER SWITCH FAULT (STORED) - MTC ...................641

RECIRC OVERCURRENT (STORED) - MTC ................................641

RECIRC SWITCH FAULT (STORED) - MTC.................................641

TX FAILURE (STORED) - MTC ...........................................641

VEHICLE ODOMETER FAILURE (STORED) - MTC ..........................641

ZONE OVERCURRENT (STORED) - MTC ..................................641

ACT CKT TEST PASSED, OVERCURRENT DTCS ACTIVE - MTC ..............646

BLEND CIRCUIT SHORTED TO GROUND - MTC............................646

BLEND CIRCUIT SHORTED TO IGN OR BATT - MTC ........................646

COMMON DRIVER SHORTED TO GROUND - MTC..........................646

COMMON DRIVER SHORTED TO IGN OR BATT - MTC ......................646

MODE CIRCUIT SHORTED TO GROUND - MTC ............................646

MODE CIRCUIT SHORTED TO IGN OR BATT - MTC.........................646

REAR BLEND CIRCUIT SHORTED TO GROUND - MTC ......................646

REAR BLEND CIRCUIT SHORTED TO IGN OR BATT - MTC ..................646

REAR MODE CIRCUIT SHORTED TO GROUND - MTC.......................646

REAR MODE CIRCUIT SHORTED TO IGN OR BATT - MTC ...................646

RECIRC CIRCUIT SHORTED TO GROUND - MTC...........................646

RECIRC CIRCUIT SHORTED TO IGN OR BATT - MTC .......................646

SHORT TOO COMPLEX - MTC...........................................646

ZONE CIRCUIT SHORTED TO GROUND - MTC.............................646

ZONE CIRCUIT SHORTED TO IGN OR BATT - MTC .........................646

BACKLIGHT DIMMING RX FAILURE (ACTIVE) - MTC ........................653

BLEND CALIBRATION FAULT - MTC ......................................654

MODE CALIBRATION FAULT - MTC.......................................654

REAR BLEND CALIBRATION FAULT - MTC ................................654

REAR MODE CALIBRATION FAULT - MTC .................................654

RECIRCULATION CALIBRATION FAULT - MTC .............................654

ZONE CALIBRATION FAULT - MTC .......................................654

BLEND OVERCURRENT (ACTIVE) - MTC ..................................662

MODE OVERCURRENT (ACTIVE) - MTC ..................................662

REAR BLEND OVERCURRENT (ACTIVE) - MTC ............................662

REAR MODE OVERCURRENT (ACTIVE) - MTC.............................662

RECIRC OVERCURRENT (ACTIVE) - MTC .................................662

ZONE OVERCURRENT (ACTIVE) - MTC ...................................662

BLOWER NOT ON HIGH - MTC ..........................................664

COOLDOWN TEST SENSOR FAILURE - MTC ..............................665

COOLDOWN TIME EXCESSIVE FAULT - MTC ..............................665

COOLDOWN TEST TOO COLD TO START - MTC ...........................667

EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN (ACTIVE) - MTC......670

EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT (ACTIVE) - MTC.....673

FRONT AND REAR BLOWER OUTPUT 1 OPEN ............................675

FRONT AND REAR BLOWER OUTPUT 2 OPEN ............................675

FRONT AND REAR BLOWER OUTPUT 1 SHORT TO BATT ...................677

xii

Page 16

TABLE OF CONTENTS - Continued

FRONT AND REAR BLOWER OUTPUT 2 SHORT TO BATT ...................677

LOOPBACK TEST FAILURE (ACTIVE) - MTC ...............................679

NO FUEL LEVEL MESSAGE RECEIVED (ACTIVE) - MTC.....................680

PCM COMMUNICATION FAILURE (ACTIVE) - MTC ..........................680

VEHICLE ODOMETER FAILURE (ACTIVE) - MTC ...........................680

REAR BLEND POT CIRCUIT OPEN (ACTIVE) - MTC.........................682

REAR BLEND POT CIRCUIT SHORT (ACTIVE) - MTC........................685

TX FAILURE (ACTIVE) - MTC ............................................687

*A/C STATUS INDICATOR FLASHING - MTC ...............................689

*RECIRC STATUS INDICATOR FLASHING - MTC............................689

*BLEND/MODE/RECIRC DOOR OPERATION IMPROPER -- DUAL & THREE-ZONE

MTC.................................................................691

*BLEND/MODE/RECIRC DOOR OPERATION IMPROPER -- SINGLE-ZONE MTC .695

*FRONT A/C - HEATER CONTROL ILLUMINATION INOPERATIVE - MTC........697

*FRONT BLOWER MOTOR INOPERATIVE - MTC ...........................699

*FRONT BLOWER MOTOR SPEEDS INCORRECT - MTC.....................704

*HVAC SYSTEM TEST - MTC ............................................706

*REAR A/C - HEATER CONTROL ILLUMINATION INOPERATIVE - MTC .........709

*REAR BLOWER MOTOR INOPERATIVE - MTC.............................711

*REAR BLOWER MOTOR SPEEDS INCORRECT - MTC......................715

*REAR BLOWER REAR CONTROL SWITCH INOP IN ONE OR MORE SPEEDS -

MTC.................................................................719

IGNITION, POWER, ACCESSORY

ACCESSORY POWER OUTPUT 1 OPEN ..................................721

ACCESSORY POWER OUTPUT 1 SHORT TO B+ ...........................723

ACCESSORY POWER OUTPUT 2 OPEN ..................................725

ACCESSORY POWER OUTPUT 2 SHORT TO B+ ...........................727

APM RELAY OUTPUT 1 OPEN - FCM .....................................729

APM RELAY OUTPUT 1 SHORT TO BATT - FCM............................731

BRAKE SHIFT INTERLOCK OUTPUT OPEN - FCM ..........................733

CPA NOT ENGAGED ...................................................735

HORN INPUT STUCK...................................................737

HORN RELAY OPEN ...................................................738

HORN RELAY SHORTED TO B+..........................................740

IGN. UNLOCK R-S OUTPUT OPEN .......................................742

IGN. UNLOCK R-S OUTPUT OVER CURRENT..............................744

IGN. UNLOCK-R-S OUTPUT OVER VOLT ..................................746

IGN. UNLOCK-R-S OUTPUT SHORT TO GROUND ..........................747

IGNITION MUX SWITCH INPUT OPEN ....................................749

IGNITION MUX SWITCH INPUT SHORT ...................................751

IGNITION RUN OUTPUT SHORT .........................................753

IGNITION RUN/START INPUT WIRING ....................................755

IGNITION START INPUT WIRING .........................................757

INTERNAL DRIVER FAULT #1............................................759

INTERNAL DRIVER FAULT #2............................................760

INTERNAL DRIVER FAULT #3............................................761

REPLACE MODULE ....................................................762

RUN/START HARDWARE INPUT FAILURE .................................763

xiii

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TABLE OF CONTENTS - Continued

INSTRUMENT CLUSTER

ABS LAMP CKT SHORT ................................................765

ABS LAMP OPEN ......................................................765

AIRBAG LAMP CKT SHORT .............................................765

AIRBAG LAMP OPEN...................................................765

EL PANEL SHORT .....................................................766

FRONT FOG LAMP INDICATOR OPEN ....................................768

FRONT FOG LAMP INDICATOR SHORT TO GROUND .......................770

FUEL GAUGE CHECKSUM FAILURE......................................772

SPEEDOMETER CHECKSUM FAILURE....................................772

TACHOMETER CHECKSUM FAILURE.....................................772

TEMPERATURE GAUGE CHECKSUM FAILURE.............................772

FUEL LEVEL SENDING UNIT INPUT OPEN ................................773

FUEL LEVEL SENDING UNIT INPUT SHORT ...............................775

IOD WAKEUP CLUSTER OUTPUT OPEN ..................................777

IOD WAKEUP CLUSTER OUTPUT SHORT .................................779

LEFT TURN SIGNAL INDICATOR DRIVER CIRCUIT OPEN....................781

LEFT TURN SIGNAL INDICATOR DRIVER CIRCUIT OPEN (EXPORT) ..........783

LEFT TURN SIGNAL INDICATOR SHORT ..................................785

LEFT TURN SIGNAL INDICATOR SHORT (EXPORT).........................787

LOOPBACK FAILURE...................................................789

NO ABS BUS MESSAGES RECEIVED.....................................790

NO BCM BUS MESSAGES RECEIVED ....................................790

NO FCM BUS MESSAGES RECEIVED ....................................790

NO ORC BUS MESSAGES RECEIVED ....................................790

NO TCM BUS MESSAGES RECEIVED ....................................790

NO PCM BUS MESSAGES RECEIVED ....................................791

PANEL DIMMING OUTPUT SHORT .......................................792

REAR FOG INDICATOR OUTPUT OPEN...................................797

REAR FOG INDICATOR OUTPUT SHORT..................................799

RIGHT TURN SIGNAL INDICATOR OPEN ..................................801

RIGHT TURN SIGNAL INDICATOR OPEN (EXPORT).........................803

RIGHT TURN SIGNAL INDICATOR SHORT.................................805

RIGHT TURN SIGNAL INDICATOR SHORT (EXPORT)........................807

TCM MESSAGE MISMATCH .............................................809

TRACTION SWITCH INPUT STUCK - BCM .................................810

*ANY PCI BUS INDICATOR INOPERATIVE .................................811

*SEAT BELT INDICATOR ALWAYS ON.....................................812

INTERIOR LIGHTING

DOME SWITCH INPUT OPEN............................................813

DOME SWITCH INPUT SHORT...........................................814

DOOR/LIFTGATE LAMP OUTPUT SHORT..................................815

FRONT COURTESY LAMPS OUTPUT SHORT ..............................816

READING LAMP OUTPUT SHORT ........................................817

MEMORY SEAT

BCM MESSAGES NOT RECEIVED........................................818

CHARGING VOLTAGE HIGH MESSAGE ...................................819

CHARGING VOLTAGE LOW MESSAGE....................................820

DRIVER FRONT RISER DOWN SWITCH STUCK............................821

DRIVER FRONT RISER SENSOR OUT OF RANGE HIGH.....................823

DRIVER FRONT RISER SENSOR OUT OF RANGE LOW .....................826

xiv

Page 18

TABLE OF CONTENTS - Continued

DRIVER FRONT RISER UP SWITCH STUCK ...............................829

DRIVER HORIZONTAL FORWARD SWITCH STUCK .........................831

DRIVER HORIZONTAL REARWARD SWITCH STUCK ........................833

DRIVER HORIZONTAL SENSOR OUT OF RANGE HIGH......................835

DRIVER HORIZONTAL SENSOR OUT OF RANGE LOW ......................838

DRIVER MIRROR HORIZONTAL SENSOR OUT OF RANGE HIGH .............841

DRIVER MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW..............843

DRIVER MIRROR VERTICAL SENSOR OUT OF RANGE HIGH ................845

DRIVER MIRROR VERTICAL SENSOR OUT OF RANGE LOW.................847

DRIVER REAR RISER DOWN SWITCH STUCK .............................849

DRIVER REAR RISER SENSOR OUT OF RANGE HIGH ......................851

DRIVER REAR RISER SENSOR OUT OF RANGE LOW ......................854

DRIVER REAR RISER UP SWITCH STUCK ................................857

DRIVER RECLINER DOWN SWITCH STUCK ...............................859

DRIVER RECLINER SENSOR OUT OF RANGE HIGH ........................861

DRIVER RECLINER SENSOR OUT OF RANGE LOW ........................864

DRIVER RECLINER UP SWITCH STUCK ..................................867

EEPROM CHECKSUM FAILURE..........................................869

LOOPBACK FAILURE...................................................869

MEMORY POSITION SWITCH STUCK.....................................870

MEMORY SWITCH INPUT OPEN .........................................872

MEMORY SWITCH INPUT SHORT........................................874

PCI BUS SHORTED TO BATTERY ........................................876

PCI BUS SHORTED TO GROUND ........................................876

PCM MESSAGES NOT RECEIVED........................................877

TCM MESSAGES NOT RECEIVED........................................879

OVERHEAD CONSOLE

BUS MESSAGES MISSING ..............................................880

COMPASS TEST FAILURE ..............................................882

DEMAGNETIZE COMPASS AS PER SERVICE MANUAL......................883

EC MIRROR DAY/NIGHT LINE FAULT .....................................884

EVIC INTERNAL FAILURE...............................................886

LOOPBACK FAILURE...................................................887

NO BCM MESSAGES RECEIVED.........................................888

NO FCM MESSAGES RECEIVED.........................................889

NO PCM MESSAGES RECEIVED.........................................890

NO TCM MESSAGES RECEIVED.........................................891

OTIS MODULE MESSAGE MISMATCH ....................................892

OTIS MODULE MESSAGE MISMATCH (DIESEL) ............................894

*REPAIRING CMTC DISPLAYS DOUBLE DASH(--)INTEMP DISPLAY........896

PARK ASSIST SYSTEM

DISPLAY VOLTAGE SUPPLY SHORT TO GROUND..........................897

MODULE CALIBRATION MISMATCH ......................................899

MODULE RAM ERROR .................................................900

MODULE SOFTWARE MISMATCH ........................................901

NO BCM DIMMING MESSAGES RECEIVED................................902

NO BCM ODOMETER MESSAGES RECEIVED .............................902

NO BCM PARK BRAKE MESSAGES RECEIVED ............................902

NO PCM DISTANCE MESSAGES RECEIVED...............................904

NO PCM MESSAGES RECEIVED.........................................904

NO TCM MESSAGES RECEIVED.........................................906

Page 19

TABLE OF CONTENTS - Continued

PCI BUS INTERNAL FAULT..............................................908

PCI BUS SHORT TO BATTERY...........................................908

PCI BUS SHORT TO GROUND...........................................908

REAR DISPLAY COMMUNICATION FAULT .................................910

REAR DISPLAY LED OR SPEAKER FAULT.................................910

SENSOR 1 FAILURE ...................................................913

SENSOR 2 FAILURE ...................................................913

SENSOR 3 FAILURE ...................................................913

SENSOR 4 FAILURE ...................................................913

SENSOR 1 GROUND CIRCUIT OPEN .....................................915

SENSOR 2 GROUND CIRCUIT OPEN .....................................915

SENSOR 3 GROUND CIRCUIT OPEN .....................................915

SENSOR 4 GROUND CIRCUIT OPEN .....................................915

SENSOR 1 SIGNAL CIRCUIT SHORT TO VOLTAGE .........................918

SENSOR 2 SIGNAL CIRCUIT SHORT TO VOLTAGE .........................918

SENSOR 3 SIGNAL CIRCUIT SHORT TO VOLTAGE .........................918

SENSOR 4 SIGNAL CIRCUIT SHORT TO VOLTAGE .........................918

SENSOR 1 SIGNAL OR BATTERY CIRCUIT OPEN OR SHORT TO GROUND . . . .921

SENSOR 2 SIGNAL OR BATTERY CIRCUIT OPEN OR SHORT TO GROUND . . . .921

SENSOR 3 SIGNAL OR BATTERY CIRCUIT OPEN OR SHORT TO GROUND . . . .921

SENSOR 4 SIGNAL OR BATTERY CIRCUIT OPEN OR SHORT TO GROUND . . . .921

SENSOR VOLTAGE SUPPLY SHORT TO GROUND..........................924

POWER DOOR LOCKS/RKE

DRIVER DOOR LOCK SWITCH INPUT OPEN OR SHORT TO VOLTAGE - BCM . .926

DRIVER DOOR LOCK SWITCH INPUT SHORT - BCM........................928

DRIVER DOOR LOCK SWITCH INPUT STUCK - BCM........................930

LEFT CYLINDER LOCK SWITCH INPUT SHORT - BCM ......................932

LEFT CYLINDER LOCK SWITCH INPUT STUCK - BCM ......................934

LEFT UNLOCK OUTPUT FAILURE - BCM ..................................936

LIFTGATE POWER RELEASE OUTPUT SHORT - BCM.......................938

LOCK OUTPUT FAILURE - BCM..........................................940

PASSENGER DOOR LOCK SWITCH INPUT OPEN OR SHORT TO VOLTAGE -

BCM.................................................................943

PASSENGER DOOR LOCK SWITCH INPUT SHORT - BCM ...................945

PASSENGER DOOR LOCK SWITCH INPUT STUCK - BCM ...................947

RIGHT CYLINDER LOCK SWITCH INPUT SHORT - BCM (EXPORT ONLY - IF

EQUIPPED)...........................................................949

RIGHT CYLINDER LOCK SWITCH INPUT STUCK - BCM (EXPORT ONLY - IF

EQUIPPED)...........................................................951

RIGHT UNLOCK OUTPUT FAILURE - BCM.................................953

*LEFT CYLINDER LOCK SWITCH INOPERATIVE............................955

*REMOTE KEYLESS ENTRY INOPERATIVE................................957

*RIGHT CYLINDER LOCK SWITCH INOPERATIVE ..........................959

POWER DOORS - LIFTGATE

AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN ........................961

AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT TO GROUND ...........963

CONTROL MODULE FAILURE - INTERNAL FAILURE ........................965

INCOMPLETE LATCH CINCH - NO PAWL TRANSITION ......................966

INCOMPLETE LATCH CINCH - OVERCURRENT ............................968

INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE ...............971

INCOMPLETE LATCH RELEASE- OVER CURRENT .........................973

xvi

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TABLE OF CONTENTS - Continued

INCOMPLETE LATCH RELEASE- PAWL SWITCH FAILURE ...................975

INCOMPLETE LATCH RELEASE- SECTOR GEAR RETURN FAILURE ..........977

INCOMPLETE POWER CLOSE - FULL OPEN SWITCH FAILURE/NON

ENGAGEMENT ........................................................978

INCOMPLETE POWER CLOSE - EXCESSIVE H.E. COUNTS/NON

ENGAGEMENT ........................................................980

INCOMPLETE POWER CLOSE - HALL EFFECT SIGNAL MISSING .............984

INCOMPLETE POWER CLOSE - OVER CURRENT ..........................987

INCOMPLETE POWER CLOSE - TRANSISTOR SHORTED....................990

INCOMPLETE POWER CLOSE - VOLTAGE BELOW MINIMUM LEVEL ..........992

INCOMPLETE POWER OPEN - FULL OPEN SWITCH FAILURE/NON

ENGAGEMENT ........................................................994

INCOMPLETE POWER OPEN - EXCESSIVE H.E. COUNTS/NON ENGAGEMENT.996

INCOMPLETE POWER OPEN - HALL EFFECT SIGNAL MISSING .............1000

INCOMPLETE POWER OPEN - OVERCURRENT...........................1003

INCOMPLETE POWER OPEN - TRANSISTOR SHORTED....................1006

INCOMPLETE POWER OPEN - VOLTAGE BELOW MINIMUM LEVEL ..........1008

IODWAKEUPOPEN-PLG-BCM ......................................1010

LOOPBACK TEST FAILURE ............................................1012

LOSS OF BCM MESSAGES ............................................1013

LOSS OF EATX MESSAGES............................................1014

LOSS OF SBEC MESSAGES ...........................................1015

OUTSIDE LIFTGATE HANDLE INPUT SHORT - BCM........................1016

OUTSIDE LIFTGATE HANDLE INPUT STUCK - BCM........................1017

OVERHEAD LIFTGATE SWITCH INPUT STUCK - BCM......................1018

OVERHEAD LIFTGATE/LOCKOUT SWITCHES OPEN OR SHT TO VOLTAGE -

BCM................................................................1019

OVERHEAD LIFTGATE/LOCKOUT SWITCHES SHORT - BCM ................1021

PINCH SENSOR CIRCUIT OPEN ........................................1022

PINCH SENSOR SIGNAL CIRCUIT SHORT TO GROUND....................1025

PROP ROD FAILURE..................................................1027

*POWER LIFTGATE INOPERATIVE ......................................1028

POWER DOORS - SLIDING

AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN .......................1029

AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT TO GROUND ..........1030

CONTROL MODULE FAILURE - INTERNAL FAILURE .......................1031

INCOMPLETE LATCH CINCH - NO PAWL TRANSITION .....................1032

INCOMPLETE LATCH CINCH - OVERCURRENT ...........................1034

INCOMPLETE LATCH RELEASE - FULL OPEN SWITCH FAILURE ............1036

INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE ..............1039

INCOMPLETE LATCH RELEASE- NO REVERSE TO UNLOAD CLUTCH........1041

INCOMPLETE LATCH RELEASE- OVERCURRENT .........................1042

INCOMPLETE LATCH RELEASE- PAWL SWITCH FAILURE ..................1044

INCOMPLETE LATCH RELEASE- SECTOR GEAR RETURN FAILURE .........1046

INCOMPLETE POWER CLOSE - FULL OPEN SWITCH FAILURE .............1047

INCOMPLETE POWER CLOSE - EXCESSIVE HALL EFFECT SIGNAL .........1049

INCOMPLETE POWER CLOSE - LATCH FAILURE..........................1052

INCOMPLETE POWER CLOSE - OVERCURRENT..........................1058

INCOMPLETE POWER CLOSE - TIME OUT ...............................1060

INCOMPLETE POWER CLOSE - TRANSISTOR SHORTED...................1061

INCOMPLETE POWER CLOSE- VOLTAGE BELOW MINIMUM LEVEL..........1063

INCOMPLETE POWER OPEN - FULL OPEN SWITCH FAILURE...............1065

xvii

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TABLE OF CONTENTS - Continued

INCOMPLETE POWER OPEN - EXCESSIVE HALL EFFECT SIGNAL ..........1067

INCOMPLETE POWER OPEN - LATCH FAILURE...........................1070

INCOMPLETE POWER OPEN - OVERCURRENT...........................1075

INCOMPLETE POWER OPEN - TIME OUT ................................1077

INCOMPLETE POWER OPEN - TRANSISTOR SHORTED....................1078

INCOMPLETE POWER OPEN - VOLTAGE BELOW MINIMUM LEVEL ..........1080

IODWAKEUPOPEN-PSD............................................1082

IOD WAKE UP PSD & PLG SHORT ......................................1084

LEFT B-PILLAR SWITCH INPUT OPEN/SHORT TO VOLTAGE - BCM ..........1086

LEFT B-PILLAR SWITCH INPUT SHORT - BCM ............................1088

LEFT B-PILLAR SWITCH INPUT STUCK - BCM ............................1089

LOOPBACK TEST FAILURE ............................................1090

LOSS OF BCM MESSAGES ............................................1091

LOSS OF EATX MESSAGES............................................1092

LOSS OF FCM MESSAGES ............................................1093

LOSS OF SBEC MESSAGES ...........................................1094

OVERHEAD LEFT SWITCH INPUT STUCK - BCM ..........................1095

OVERHEAD RIGHT SWITCH INPUT STUCK - BCM.........................1096

OVERHEAD RIGHT/LEFT SWITCHES SHORT - BCM .......................1097

RIGHT B-PILLAR SWITCH INPUT OPEN OR SHORT TO VOLTAGE - BCM .....1098

RIGHT B-PILLAR SWITCH INPUT SHORT - BCM ...........................1100

RIGHT B-PILLAR SWITCH INPUT STUCK - BCM ...........................1101

*POWER SLIDING DOOR INOPERATIVE..................................1102

POWER MIRROR

FOLD MIRROR OUTPUT FAILURE (EXPORT ONLY) ........................1103

PASSENGER MIRROR RELAY OUTPUT OPEN (EXPORT ONLY)..............1105

PASSENGER MIRROR RELAY OUTPUT SHORT (EXPORT ONLY) ............1107

UNFOLD MIRROR OUTPUT FAILURE (EXPORT ONLY) .....................1108

*BOTH MIRRORS DO NOT UNFOLD EXCEPT WITH EITHER FRONT DOOR

(EXPORT ONLY) ......................................................1111

*BOTH POWER FOLDING MIRRORS DO NOT FOLD (EXPORT ONLY).........1112

*DRIVER FOLDING MIRROR DOES NOT FOLD (EXPORT ONLY) .............1113

*PASSENGER FOLDING MIRROR DOES NOT FOLD (EXPORT ONLY) .........1115

TELECOMMUNICATION

AMP MESSAGE NOT RECEIVED ........................................1117

AUDIO HARDWARE MESSAGE NOT RECEIVED ...........................1118

BLUETOOTH ERROR..................................................1119

FLASH CHECKSUM ERROR ............................................1119

FLASH WRITE ERROR.................................................1119

PCI BUS INTERNAL ERROR ............................................1119

RAM WRITE ERROR ..................................................1119

ROM CHECKSUM ERROR..............................................1119

BODY STYLE MESSAGE NOT RECEIVED ................................1121

INVALID BODY STYLE.................................................1121

GENERAL MICROPHONE FAULT ........................................1122

IGNITION POWER MESSAGE NOT RECEIVED ............................1124

LEFT AUDIO INPUT SHORT TO GROUND ................................1125

LEFT AUDIO INPUT SHORT TO VOLTAGE ................................1125

LEFT AUDIO OUTPUT 1 SHORT TO GROUND.............................1125

LEFT AUDIO OUTPUT 1 SHORT TO VOLTAGE ............................1125

MIRROR POWER CIRCUIT SHORT TO GROUND ..........................1128

xviii

Page 22

TABLE OF CONTENTS - Continued

MIRROR POWER CIRCUIT SHORT TO VOLTAGE ..........................1128

PCI BUS BUSY .......................................................1130

PCI BUS CIRCUIT OPEN...............................................1130

PCI BUS CIRCUIT SHORT TO GROUND..................................1130

PCI BUS CIRCUIT SHORT TO VOLTAGE..................................1130

PHONE SWITCH STUCK ...............................................1132

VOICE RECOGNITION SWITCH STUCK ..................................1132

VOICE RECOGNITION/PHONE SWITCH CIRCUIT RATIONALITY .............1132

VOICE RECOGNITION/PHONE SWITCH CIRCUIT SHORT TO GROUND .......1132

VOICE RECOGNITION/PHONE SWITCH CIRCUIT SHORT TO VOLTAGE.......1132

PRNDL MESSAGE NOT RECEIVED......................................1136

RADIO MESSAGE NOT RECEIVED ......................................1137

RIGHT AUDIO INPUT SHORT TO GROUND ...............................1138

RIGHT AUDIO INPUT SHORT TO VOLTAGE ...............................1138

RIGHT AUDIO OUTPUT 1 SHORT TO GROUND............................1138

RIGHT AUDIO OUTPUT 1 SHORT TO VOLTAGE ...........................1138

RPM MESSAGE NOT RECEIVED ........................................1141

VIN MESSAGE NOT RECEIVED .........................................1142

TIRE PRESSURE MONITORING

INITIALIZATION FAULT - SKREEM .......................................1143

TIRE SENSOR 1 HIGH PRESSURE ALERT - SKREEM ......................1143

TIRE SENSOR 1 LOW PRESSURE ALERT - SKREEM ......................1143

TIRE SENSOR 1 TRANSMIT FAILURE - SKREEM ..........................1143

TIRE SENSOR 2 HIGH PRESSURE ALERT - SKREEM ......................1143

TIRE SENSOR 2 LOW PRESSURE ALERT - SKREEM ......................1143

TIRE SENSOR 2 TRANSMIT FAILURE - SKREEM ..........................1143

TIRE SENSOR 3 HIGH PRESSURE ALERT - SKREEM ......................1143

TIRE SENSOR 3 LOW PRESSURE ALERT - SKREEM ......................1143

TIRE SENSOR 3 TRANSMIT FAILURE - SKREEM ..........................1143

TIRE SENSOR 4 HIGH PRESSURE ALERT - SKREEM ......................1143

TIRE SENSOR 4 LOW PRESSURE ALERT - SKREEM ......................1143

TIRE SENSOR 4 TRANSMIT FAILURE - SKREEM ..........................1143

PRNDL MESSAGE MISSING - SKREEM ..................................1147

VEHICLE SPEED MESSAGE MISSING - SKREEM..........................1147

SENSOR 1 FAULT - SKREEM ...........................................1149

SENSOR 2 FAULT - SKREEM ...........................................1149

SENSOR 3 FAULT - SKREEM ...........................................1149

SENSOR 4 FAULT - SKREEM ...........................................1149

TIRE SENSOR 1 LOW BATTERY - SKREEM...............................1149

TIRE SENSOR 2 LOW BATTERY - SKREEM...............................1149

TIRE SENSOR 3 LOW BATTERY - SKREEM...............................1149

TIRE SENSOR 4 LOW BATTERY - SKREEM...............................1149

VEHICLE THEFT/SECURITY

BCM MESSAGES NOT RECEIVED (EXPORT ONLY)........................1152

INTERNAL EEPROM WRITE ERROR (EXPORT ONLY) ......................1153

INTERNAL TRANSMIT FAILURE (EXPORT ONLY) ..........................1154

INTERNAL ULTRASONIC FAULT (EXPORT ONLY)..........................1155

LOOPBACK ERROR (EXPORT ONLY)....................................1159

NO VALID MESSAGES RECEIVED (EXPORT ONLY)........................1160

PCI BUS SHORTED TO BATTERY (EXPORT ONLY) ........................1161

PCI BUS SHORTED TO GROUND (EXPORT ONLY) ........................1162

xix

Page 23

TABLE OF CONTENTS - Continued

PCM MESSAGES NOT RECEIVED (EXPORT ONLY)........................1163

*ALARM TRIPS ON ITS OWN ...........................................1164

*HOOD DOES NOT TRIP VTSS (EXPORT ONLY)...........................1165

*LEFT FRONT DOOR DOES NOT TRIP VTSS..............................1166

*LEFT SLIDING DOOR DOES NOT TRIP VTSS ............................1167

*LIFTGATE DOES NOT TRIP VTSS (EXPORT ONLY)........................1168

*REPEATER LAMPS INOPERATIVE WITH ALARM (EXPORT ONLY) ...........1169

*RIGHT FRONT DOOR DOES NOT TRIP VTSS ............................1170

*RIGHT SLIDING DOOR DOES NOT TRIP VTSS ...........................1171

*VTSS INDICATOR LAMP INOPERATIVE (EXPORT ONLY)...................1172

*VTSS SIREN INOP (EXPORT ONLY).....................................1173

*VTSS WILL NOT ARM.................................................1175

WINDSHIELD WIPER & WASHER

FR WIPER HI-LO RELAY OPEN .........................................1176

FR WIPER HI-LO RELAY SHORT TO BATT................................1178

FRONT WASH SWITCH INPUT STUCK ...................................1179

FRONT WIPER NOT PARKED...........................................1181

FRONT WIPER ON RELAY OPEN........................................1183

FRONT WIPER ON RELAY SHORT TO BATT ..............................1184

FRONT WIPER PARK SWITCH SHORT TO GND ...........................1185

FRONT WIPER SWITCH MUX INPUT OPEN...............................1187

FRONT WIPER SWITCH MUX INPUT SHORT TO GROUND..................1189

HEADLAMP WASHER RELAY OPEN .....................................1191

HEADLAMP WASHER RELAY SHORT TO BATT............................1193

HIGH VOLTAGE-DISABLE FRONT/REAR WASHERS........................1194

REAR WASH SWITCH INPUT STUCK ....................................1195

REAR WIPER OUTPUT OPEN ..........................................1196

REAR WIPER OUTPUT SHORT TO GROUND .............................1198

REAR WIPER SWITCH MUX INPUT OPEN................................1200

REAR WIPER SWITCH MUX INPUT SHORT TO GROUND...................1202

WASHER OUTPUT OPEN CIRCUIT ......................................1204

WASHER OUTPUT SHORTED TO BATTERY ..............................1207

WASHER OUTPUT SHORTED TO GROUND ..............................1208

VERIFICATION TESTS

VERIFICATION TESTS.................................................1210

8.0 COMPONENT LOCATIONS.............................................1219

8.1 AIRBAG SYSTEM................................................1219

8.2 BODY CONTROL MODULE........................................1221

8.3 POWERTRAIN CONTROL MODULE - NGC...........................1221

8.4 ENGINE CONTROL MODULE - DIESEL..............................1222

8.5 HEATING & A/C..................................................1222

8.5.1 ACTUATORS – FRONT, LHD...............................1222

8.5.2 ACTUATOR – FRONT, LHD ................................1223

8.5.3 ACTUATORS – FRONT, RHD ..............................1224

8.5.4 ACTUATOR – FRONT, RHD................................1225

8.5.5 EVAPORATOR TEMPERATURE SENSOR, LHD, RG ATC & MTC.1225

8.5.6 EVAPORATOR TEMPERATURE SENSOR, RHD...............1226

8.5.7 EVAPORATOR TEMPERATURE SENSOR, LHD, RS ATC & MTC .1226

8.5.8 C202 CONNECTOR ......................................1227

Page 24

TABLE OF CONTENTS - Continued

8.5.9 ACTUATORS – REAR ....................................1227

8.5.10 REAR A/C HEATER UNIT CONNECTOR .....................1227

8.5.11 DIESEL CABIN HEATER ASSIST (DCHA) ASSEMBLY ..........1228

8.5.12 C330 HARNESS CONNECTOR (DCHA)......................1228

8.5.13 C331 HARNESS CONNECTOR (DCHA)......................1229

8.6 INTEGRATED POWER MODULE & FRONT CONTROL MODULE –

TYPICAL .......................................................1229

8.7 MEMORY SYSTEM...............................................1230

8.7.1 MEMORY SEAT/MIRROR/ADJUSTABLE PEDALS MODULE/SEAT

MOTORS...............................................1230

8.7.2 MEMORY SEAT/MIRROR/ADJUSTABLE PEDALS MODULE CIRCUIT

BREAKER ..............................................1230

8.8 OVERHEAD CONSOLE ...........................................1230

8.9 POWER FOLDING MIRRORS ......................................1231

8.10 POWER LIFTGATE SYSTEM.......................................1231

8.10.1 MODULE ...............................................1231

8.10.2 PINCH SENSORS (TAPE SWITCH) .........................1232

8.10.3 LATCH ASSEMBLY.......................................1232

8.11 POWER DOOR LOCK/RKE SYSTEM................................1232

8.11.1 DOOR LOCK MOTOR/AJAR SWITCH .......................1232

8.11.2 CYLINDER LOCK SWITCH ................................1233

8.11.3 SENTRY KEY REMOTE ENTRY MODULE....................1233

8.12 POWER SLIDING DOOR ..........................................1233

8.12.1 MODULE ...............................................1233

8.12.2 LOWER DRIVE UNIT .....................................1234

8.12.3 LATCH ASSEMBLY.......................................1234

8.13 VEHICLE THEFT SECURITY SYSTEM...............................1234

8.13.1 THATCHAM ALARM MODULE (EXPORT ONLY)...............1234

8.13.3 VTSS SIREN (EXPORT ONLY) .............................1235

8.13.4 FRONT INTRUSION SENSOR (EXPORT ONLY)...............1235

8.13.5 REAR INTRUSION SENSOR (EXPORT ONLY) ................1235

9.0 CONNECTOR PINOUTS ...............................................1237

A/C-HEATER CONTROL C1 (MTC) - BLACK/RED 20 WAY ...................1237

A/C-HEATER CONTROL C2 (MTC) - BLACK/BLUE 10 WAY ..................1237

ADJUSTABLE PEDALS RELAY (EXCEPT EXPORT/EXCEPT MEMORY)-9WAY.1237

ADJUSTABLE PEDALS SENSOR (EXCEPT EXPORT)-3WAY...............1238

ADJUSTABLE PEDALS SWITCH (EXCEPT EXPORT)-4WAY................1238

AMPLIFIER C1 (HIGHLINE AUDIO) - NATURAL 14 WAY .....................1239

AMPLIFIER C2 (HIGHLINE AUDIO) - 20 WAY ..............................1240

ATC REMOTE SENSOR (ATC)-4WAY...................................1240

AUTO TEMP CONTROL C1 - NATURAL 13 WAY ...........................1240

AUTO TEMP CONTROL C2 - BLACK 13 WAY..............................1241

AUTO TEMP CONTROL C3-4WAY.....................................1241

BELT TENSION SENSOR (OCCUPANT SENSING) - BLACK 3 WAY............1241

BLOWER MOTOR RESISTOR C1 (MTC) - BLACK 6 WAY....................1241

BLOWER MOTOR RESISTOR C2 (MTC) - BLACK 2 WAY....................1242

BODY CONTROL MODULE C1 - BLACK/BLACK 6 WAY .....................1242

BODY CONTROL MODULE C2 - BLACK/GREEN 34 WAY....................1243

BODY CONTROL MODULE C3 - BLACK/WHITE 34 WAY ....................1244

BODY CONTROL MODULE C4 - BLACK/GRAY 34 WAY .....................1245

BODY CONTROL MODULE C5 - BLACK/BLACK 34 WAY ....................1246

xxi

Page 25

TABLE OF CONTENTS - Continued

BRAKE FLUID LEVEL SWITCH-2WAY..................................1246

C112 (GAS) - BLACK (BODY SIDE) ......................................1247

C112 (GAS) - BLACK (FRONT END LIGHTING SIDE) .......................1247

C200 - GRAY (INSTRUMENT PANEL SIDE)................................1250

C202 - GRAY (COMPONENT SIDE) ......................................1252

C202 - GRAY (INSTRUMENT PANEL SIDE)................................1252

C304 (LHD) - YELLOW (BODY SIDE).....................................1252

C304 (LHD) - YELLOW (SEAT SIDE) .....................................1252

C305 - GRAY (BODY SIDE).............................................1253

C305 - GRAY (SEAT SIDE) .............................................1253

C306 (RHD) - YELLOW (BODY SIDE) ....................................1253

C306 (RHD) - YELLOW (SEAT SIDE) .....................................1254

C307 - YELLOW (BODY SIDE) ..........................................1254

C307 - YELLOW (SEAT SIDE)...........................................1255

C308 (EXCEPT SIDE AIRBAG) - GREEN (BODY SIDE) ......................1255

C308 (EXCEPT SIDE AIRBAG) - GREEN (LEFT DOOR WIRE TRACK ASSEMBLY

SIDE) ...............................................................1255

C308 (SIDE AIRBAG) - BLUE (BODY SIDE) ...............................1256

C308 (SIDE AIRBAG) - BLUE (LEFT DOOR WIRE TRACK ASSEMBLY SIDE). . . .1256

C309 (EXCEPT SIDE AIRBAG) - GRAY (BODY SIDE) .......................1256

C309 (EXCEPT SIDE AIRBAG) - GRAY (RIGHT DOOR WIRE TRACK ASSEMBLY

SIDE) ...............................................................1257

C309 (SIDE AIRBAG) - GREEN (BODY SIDE)..............................1257

C309 (SIDE AIRBAG) - GREEN (RIGHT DOOR WIRE TRACK ASSEMBLY SIDE).1257

C311 (3 ZONE HVAC/EXCEPT SIDE AIRBAG) - GRAY (BODY SIDE)...........1258

C311 (3 ZONE HVAC/EXCEPT SIDE AIRBAG) - GRAY (REAR A/C JUMPER

SIDE) ...............................................................1258

C311 (3 ZONE HVAC/SIDE AIRBAG) - GRAY (BODY SIDE)...................1258

C311 (3 ZONE HVAC/SIDE AIRBAG) - GRAY (REAR A/C JUMPER SIDE) .......1259

C312 (EXCEPT SIDE AIRBAG) - GRAY (BODY SIDE) .......................1259

C312 (EXCEPT SIDE AIRBAG) - GRAY (HEADLINER SIDE) ..................1260

C312 (SIDE AIRBAG) - (BODY SIDE) .....................................1261

C312 (SIDE AIRBAG) - (HEADLINER SIDE)................................1262

C314 - BLACK (BODY SIDE) ............................................1263

C314 - BLACK (LIFTGATE SIDE) ........................................1263

C315 (POWER LIFTGATE) - BLACK (BODY SIDE)..........................1264

C315 (POWER LIFTGATE) - BLACK (LIFTGATE SIDE) ......................1264

C316 (POWER SLIDING DOOR) - BLACK (LEFT DOOR WIRE TRACK ASSEMBLY

SIDE) ...............................................................1264

C316 (POWER SLIDING DOOR) - BLACK (LEFT SLIDING DOOR SIDE)........1264

C317 (POWER SLIDING DOOR) - BLACK (RIGHT DOOR WIRE TRACK ASSEMBLY

SIDE) ...............................................................1265

C317 (POWER SLIDING DOOR) - BLACK (RIGHT SLIDING DOOR SIDE) ......1265

C324 (MANUAL SLIDING DOOR) - BLACK (LEFT DOOR WIRE TRACK ASSEMBLY

SIDE) ...............................................................1265

C324 (MANUAL SLIDING DOOR) - BLACK (LEFT MANUAL SLIDING DOOR

SIDE) ...............................................................1265

C325 (MANUAL SLIDING DOOR) - BLACK (RIGHT DOOR WIRE TRACK ASSEMBLY

SIDE) ...............................................................1266

C325 (MANUAL SLIDING DOOR) - BLACK (RIGHT MANUAL SLIDING DOOR

SIDE) ...............................................................1266

C330 (DIESEL) - LT. GRAY (CABIN HEATER JUMPER SIDE) .................1266

C330 (DIESEL) - LT. GRAY (POWERTRAIN SIDE) ..........................1266

xxii

Page 26

TABLE OF CONTENTS - Continued

C331 (DIESEL) - BLACK (CABIN HEATER COMPONENT SIDE)...............1266

C331 (DIESEL) - BLACK (CABIN HEATER JUMPER SIDE) ...................1267

C332 (3 ZONE ATC) - BLACK (COMPONENT SIDE) ........................1267

C332 (3 ZONE ATC) - LT. GREEN (BODY SIDE)............................1267

CABIN HEATER ASSIST C1 (DIESEL) - BLACK 6 WAY ......................1267

CABIN HEATER ASSIST C2 (DIESEL) - BLACK 2 WAY ......................1268

CD CHANGER-8WAY................................................1268

CLOCKSPRING C2 - YELLOW 4 WAY ....................................1268

CLOCKSPRING C3 - BLACK 4 WAY......................................1268

CONTROLLER ANTILOCK BRAKE - BLACK 24 WAY........................1269

DATA LINK CONNECTOR - BLACK 16 WAY ...............................1269

DOSING PUMP (DIESEL) - BLACK 2 WAY ................................1269

DRIVER AIRBAG SQUIB 1 - BROWN/YELLOW 2 WAY ......................1270

DRIVER AIRBAG SQUIB 2 - BLACK/YELLOW 2 WAY .......................1270

DRIVER BLEND DOOR ACTUATOR - GRAY 2 WAY.........................1270

DRIVER DOOR LOCK SWITCH - BLACK 3 WAY ...........................1270

DRIVER KNEE BLOCKER AIRBAG SQUIB (LHD) - YELLOW 4 WAY ...........1271

DRIVER POWER SEAT FRONT RISER MOTOR - RED 2 WAY ................1271

DRIVER POWER SEAT FRONT RISER POSITION SENSOR - BLACK 3 WAY . . .1271

DRIVER POWER SEAT HORIZONTAL MOTOR - BLACK 2 WAY...............1271

DRIVER POWER SEAT HORIZONTAL POSITION SENSOR - BLACK 3 WAY . . . .1272

DRIVER POWER SEAT REAR RISER MOTOR - RED 2 WAY .................1272

DRIVER POWER SEAT REAR RISER POSITION SENSOR - BLACK 3 WAY.....1272

DRIVER POWER SEAT RECLINER MOTOR - GREEN 2 WAY ................1272

DRIVER POWER SEAT RECLINER POSITION SENSOR - BLACK 3 WAY.......1273

DRIVER POWER SEAT SWITCH - GREEN 10 WAY .........................1273

DRIVER SEAT BELT SWITCH - WHITE 2 WAY .............................1273

DRIVER SEAT BELT TENSIONER - YELLOW 2 WAY ........................1274

DVD/CD CHANGER C1 - BLACK 16 WAY .................................1274

ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAY.................1275

EVAPORATOR TEMPERATURE SENSOR - BLACK 2 WAY ...................1276

FRONT BLOWER MODULE C1 (ATC) - BLACK 4 WAY ......................1276

FRONT BLOWER MODULE C2 (ATC) - BLACK 2 WAY ......................1276

FRONT CONTROL MODULE - BLACK 49 WAY.............................1277

FRONT INTRUSION SENSOR (UNITED KINGDOM)-3WAY.................1278

FRONT READING LAMPS/SWITCH - BLACK 6 WAY ........................1278

HANDS FREE MODULE C1 - 22 WAY ....................................1278

HANDS FREE MODULE C2 - BLACK 10 WAY..............................1278

HANDS FREE MODULE C3 - 10 WAY ....................................1279

HEADLAMP SWITCH - BLACK 13 WAY ...................................1279

HEADLAMP WASHER PUMP MOTOR (EXPORT) - BLACK 2 WAY.............1279

HIGH NOTE HORN - BLACK 2 WAY......................................1279

HOOD AJAR SWITCH (EXPORT) - BLACK 2 WAY..........................1280

IGNITION SWITCH - BLACK 5 WAY ......................................1280

INSTRUMENT CLUSTER - BLACK 13 WAY................................1280

INSTRUMENT PANEL SWITCH BANK (EXCEPT HEATED SEATS)-6WAY.....1281

FUSES (IPM).........................................................1283

ACCESSORY RELAY ..................................................1283

DEFOGGER RELAY...................................................1283

FRONT BLOWER MOTOR RELAY .......................................1283

FRONT WIPER HIGH/LOW RELAY.......................................1284

FRONT WIPER ON/OFF RELAY .........................................1284

HEADLAMP WASHER RELAY (EXPORT) .................................1284

xxiii

Page 27

TABLE OF CONTENTS - Continued

HORN RELAY ........................................................1284

PARK LAMP RELAY ...................................................1284

REAR BLOWER MOTOR RELAY (3 ZONE HVAC) ..........................1284

INTEGRATED POWER MODULE C4 - BLUE 10 WAY .......................1285

INTEGRATED POWER MODULE C7 - 20 WAY .............................1285

LEFT B-PILLAR SWITCH (POWER SLIDING DOOR) - GRAY 3 WAY ...........1285

LEFT CINCH/RELEASE MOTOR (POWER SLIDING DOOR) - GRAY 4 WAY .....1286

LEFT CURTAIN AIRBAG SQUIB-2WAY..................................1286

LEFT CYLINDER LOCK SWITCH (EXPORT) - BLACK 2 WAY.................1286

LEFT FRONT DOOR AJAR SWITCH (BASE) - BLACK 2 WAY.................1286

LEFT FRONT DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) - BLACK 4

WAY................................................................1287

LEFT FRONT IMPACT SENSOR (EXCEPT EXPORT)-2WAY................1287

LEFT FRONT IMPACT SENSOR (EXPORT) - BLACK 2 WAY .................1287

LEFT FULL OPEN SWITCH (POWER SLIDING DOOR) - BLACK 2 WAY ........1287

LEFT HEADLAMP (CARAVAN/VOYAGER EXCEPT EXPORT) - BLACK 3 WAY . . .1288

LEFT HEADLAMP (TOWN AND COUNTRY) - GREEN 3 WAY .................1288

LEFT POWER MIRROR - BLACK 12 WAY .................................1288

LEFT SIDE IMPACT SENSOR 1 (EXCEPT EXPORT)-2WAY.................1289

LEFT SIDE IMPACT SENSOR 1 (EXPORT) - BLACK 2 WAY ..................1289

LEFT SIDE IMPACT SENSOR2-2WAY..................................1289

LEFT SIDE IMPACT SENSOR 3 - BLACK 2 WAY ...........................1289

LEFT SLIDING DOOR CONTROL MODULE C1 (POWER SLIDING DOOR) - BLACK 8

WAY................................................................1290

LEFT SLIDING DOOR CONTROL MODULE C2 (POWER SLIDING DOOR) - 20

WAY................................................................1290

LEFT SLIDING DOOR LATCH SENSING SWITCH (POWER SLIDING DOOR) -

BLACK 6 WAY........................................................1290

LEFT SLIDING DOOR LOCK MOTOR (POWER SLIDING DOOR) - BLACK 4

WAY................................................................1291

LEFT SLIDING DOOR LOCK MOTOR/AJAR SWITCH (MANUAL SLIDING DOOR) -

BLACK 4 WAY........................................................1291

LEFT SLIDING DOOR MOTOR (POWER SLIDING DOOR) - BLACK 8 WAY .....1291

LICENSE LAMP (POWER LIFTGATE) - DK. GRAY 8 WAY....................1291

LICENSE LAMP (POWER RELEASE) - DK. GRAY 4 WAY ....................1292

LIFTGATE AJAR SWITCH (MANUAL RELEASE) - BLACK 2 WAY..............1292

LIFTGATE AJAR SWITCH (POWER RELEASE) - BLACK 4 WAY ..............1292

LIFTGATE CINCH/RELEASE MOTOR (POWER LIFTGATE) - BLUE 7 WAY......1292

LIFTGATE LEFT PINCH SENSOR (POWER LIFTGATE) - BLACK 2 WAY........1293

LIFTGATE RIGHT PINCH SENSOR (POWER LIFTGATE) - BLACK 2 WAY ......1293

MEMORY SEAT/MIRROR/ADJUSTABLE PEDALS MODULE C1 - GRAY 26 WAY .1294 MEMORY SEAT/MIRROR/ADJUSTABLE PEDALS MODULE C2 - GRAY 16 WAY .1294 MEMORY SEAT/MIRROR/ADJUSTABLE PEDALS MODULE C3 - WHITE 12

WAY................................................................1295

MEMORY SEAT/MIRROR/ADJUSTABLE PEDALS MODULE C4 - GRAY 2 WAY . .1295

MEMORY SET SWITCH - BLACK 2 WAY..................................1295

MESSAGE CENTER (EXPORT) - WHITE 14 WAY ..........................1295

MODE DOOR ACTUATOR - GRAY 2 WAY.................................1296

MULTI-FUNCTION SWITCH - BLACK 4 WAY...............................1296

OCCUPANT CLASSIFICATION MODULE - BLACK 18 WAY...................1296

OCCUPANT RESTRAINT CONTROLLER C1 - YELLOW 32 WAY ..............1297

OCCUPANT RESTRAINT CONTROLLER C2 - YELLOW 32 WAY ..............1298

OVERHEAD CONSOLE (EXCEPT BASE) - BLACK 12 WAY ..................1298

xxiv

Page 28

TABLE OF CONTENTS - Continued

PARK ASSIST DISPLAY - 3 WAY ........................................1299

PARK ASSIST MODULE - 18 WAY .......................................1299

PARK ASSIST SENSOR NO.1-3WAY...................................1299

PARK ASSIST SENSOR NO.2-3WAY...................................1299

PARK ASSIST SENSOR NO.3-3WAY...................................1300

PARK ASSIST SENSOR NO.4-3WAY...................................1300

PASSENGER AIRBAG - YELLOW 4 WAY..................................1300

PASSENGER AIRBAG ON/OFF INDICATOR LAMP - BLACK 2 WAY............1300

PASSENGER BLEND DOOR ACTUATOR - GRAY 2 WAY ....................1300

PASSENGER DOOR LOCK SWITCH - BLACK 3 WAY .......................1301

PASSENGER FOLDING MIRROR RELAY (EXPORT) - BLUE 9 WAY ...........1301

PASSENGER SEAT BELT SWITCH (OCCUPANT SENSING) - YELLOW 2 WAY . .1301

PASSENGER SEAT BELT TENSIONER-2WAY............................1302

PASSENGER SEAT WEIGHT SENSOR - BLACK 3 WAY .....................1302

POWER FOLDING MIRROR SWITCH (EXPORT) - BLACK 2 WAY .............1302

POWER LIFTGATE MODULE C1 - BLACK 8 WAY ..........................1303

POWER LIFTGATE MODULE C2 - 20 WAY ................................1303

POWER LIFTGATE MOTOR - BLACK 10 WAY .............................1303

POWER MIRROR SWITCH - BLACK 13 WAY ..............................1304

POWER SEAT CIRCUIT BREAKER (30A) - GRAY 2 WAY ....................1304

POWERTRAIN CONTROL MODULE C1 - BLACK 38 WAY....................1305

POWERTRAIN CONTROL MODULE C4 - GREEN 38 WAY ...................1306

RADIO C1 - 22 WAY...................................................1307

RADIO C2 (CD CHANGER) - 10 WAY ....................................1307

RADIO C2 (HANDS FREE) - 10 WAY.....................................1308

REAR A/C-HEATER UNIT (3 ZONE MTC) - LT. GREEN 10 WAY...............1308

REAR AUTO TEMP CONTROL SWITCH (3 ZONE ATC) - BLACK 13 WAY.......1308

REAR BLOWER FRONT CONTROL SWITCH (3 ZONE MTC) - BLACK 8 WAY . . .1308 REAR BLOWER MOTOR POWER MODULE C1 (3 ZONE ATC) - RED/BLACK 4

WAY................................................................1309

REAR BLOWER MOTOR POWER MODULE C2 (3 ZONE ATC) - BLACK 2 WAY .1309 REAR BLOWER REAR CONTROL SWITCH C1 (3 ZONE MTC) - BLACK 4 WAY .1309 REAR BLOWER REAR CONTROL SWITCH C2 (3 ZONE MTC) - BLACK 6 WAY .1309

REAR INTRUSION SENSOR (UNITED KINGDOM)-3WAY..................1310

REAR MODE MOTOR (3 ZONE ATC) - GRAY 2 WAY........................1310

REAR TEMPERATURE MOTOR (3 ZONE ATC) - GRAY 2 WAY ...............1310

REAR VIEW MIRROR C1 (LUXURY) - BLACK 7 WAY .......................1310

REAR VIEW MIRROR C2 (HANDS FREE) - BLACK 12 WAY ..................1311

REAR WIPER MOTOR-3WAY..........................................1311

RECIRCULATION DOOR ACTUATOR - GRAY 2 WAY........................1311

RIGHT B-PILLAR SWITCH (POWER SLIDING DOOR) - GRAY 3 WAY ..........1311

RIGHT CINCH/RELEASE MOTOR (POWER SLIDING DOOR) - GRAY 4 WAY. . . .1312

RIGHT CURTAIN AIRBAG SQUIB-2WAY ................................1312

RIGHT CYLINDER LOCK SWITCH (EXPORT) - BLACK 2 WAY................1312

RIGHT DOOR SPEAKER-3WAY .......................................1312

RIGHT FOG LAMP - BLACK 2 WAY ......................................1313

RIGHT FRONT DOOR AJAR SWITCH (BASE) - BLACK 2 WAY ...............1313

RIGHT FRONT DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) - BLACK 4

WAY................................................................1313

RIGHT FRONT IMPACT SENSOR - BLACK 2 WAY..........................1313

RIGHT FRONT PARK/TURN SIGNAL LAMP - BLACK 3 WAY .................1314

RIGHT FULL OPEN SWITCH (POWER SLIDING DOOR) - BLACK 2 WAY.......1314

RIGHT HEADLAMP (CARAVAN/VOYAGER EXCEPT EXPORT) - BLACK 3 WAY. .1314

xxv

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TABLE OF CONTENTS - Continued

RIGHT HEADLAMP (TOWN AND COUNTRY) - GREEN 3 WAY................1315

RIGHT POWER MIRROR - BLACK 12 WAY................................1315

RIGHT REAR PILLAR SPEAKER (HIGHLINE AUDIO) - BLACK 2 WAY .........1315

RIGHT REAR SPEAKER-3WAY........................................1315

RIGHT REMOTE RADIO SWITCH - BLACK 2 WAY .........................1316

RIGHT SIDE IMPACT SENSOR 1 (EXCEPT EXPORT)-2WAY...............1316

RIGHT SIDE IMPACT SENSOR 1 (EXPORT) - BLACK 2 WAY.................1316

RIGHT SIDE IMPACT SENSOR2-2WAY.................................1316

RIGHT SIDE IMPACT SENSOR 3 - BLACK 2 WAY ..........................1317

RIGHT SLIDING DOOR CONTROL MODULE C1 (POWER SLIDING DOOR) - BLACK

8WAY ..............................................................1317

RIGHT SLIDING DOOR CONTROL MODULE C2 (POWER SLIDING DOOR) - 20

WAY................................................................1317

RIGHT SLIDING DOOR LATCH SENSING SWITCH (POWER SLIDING DOOR) -

BLACK 6 WAY........................................................1318

RIGHT SLIDING DOOR LOCK MOTOR (POWER SLIDING DOOR) - BLACK 4 WAY. .1318 RIGHT SLIDING DOOR LOCK MOTOR/AJAR SWITCH (MANUAL SLIDING DOOR) -

BLACK 4 WAY........................................................1318

RIGHT SLIDING DOOR MOTOR (POWER SLIDING DOOR) - BLACK 8 WAY . . . .1318

SENTRY KEY REMOTE ENTRY MODULE (SKREEM) - BLACK 6 WAY .........1319

SIREN (UNITED KINGDOM) - BLACK 4 WAY ..............................1319

THATCHAM ALARM MODULE (UNITED KINGDOM) - BLACK 16 WAY .........1319

TRACTION CONTROL SWITCH - BLACK 2 WAY ...........................1319

TRANSMISSION CONTROL MODULE (DIESEL) - BLACK ....................1320

WASHER FLUID LEVEL SWITCH - BLACK 2 WAY ..........................1321

WASHER PUMP MOTOR - BLACK 2 WAY.................................1321

WIPER MODULE - DK. GRAY 4 WAY.....................................1321

10.0 SCHEMATIC DIAGRAMS...............................................1323

10.1 ADJUSTABLE PEDALS SYSTEM ...................................1323

10.1.1 NON-MEMORY..........................................1323

10.1.2 MEMORY...............................................1324

10.2 AIRBAG SYSTEM ................................................1325

10.2.1 OCCUPANT RESTRAINT CONTROLLER - HIGH LINE..........1325

10.2.2 OCCUPANT RESTRAINT CONTROLLER - LOW LINE ..........1326

10.2.3 OCCUPANT CLASSIFICATION SYSTEM .....................1327

10.3 AUDIO SYSTEM .................................................1328

10.3.1 PREMIUM AUDIO SYSTEM................................1328

10.3.2 BASE AUDIO SYSTEM....................................1329

10.3.3 CD CHANGER ..........................................1330

10.3.4 DVD/CD CHANGER ......................................1330

10.3.5 REMOTE RADIO CONTROLS ..............................1331

10.4 AUTOMATIC TEMPERATURE CONTROL SYSTEM ....................1332

10.4.1 FRONTATC - LHD .......................................1332

10.4.2 FRONTATC - RHD .......................................1333

10.4.3 REAR ATC - THREE ZONE ................................1334

10.5 CABIN HEATER .................................................1335

10.5.1 DIESEL CABIN HEATER ASSIST (DCHA) ....................1335

10.6 COMMUNICATION ...............................................1336

10.6.1 PCM COMMUNICATION - NGC.............................1337

10.6.2 ECM & CABIN HEATER ASSIST COMMUNICATION - DIESEL

ONLY..................................................1337

xxvi

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TABLE OF CONTENTS - Continued

10.7 DOOR AJAR SYSTEM ............................................1338

10.7.1 DOOR AJAR SYSTEM WITH POWER SLIDING DOORS ........1338

10.7.2 DOOR AJAR WITHOUT POWER SLIDING DOORS ............1339

10.8 EXTERIOR LIGHTING ............................................1340

10.9 IGNITION, POWER, ACCESSORY ..................................1341

10.9.1 HORN SYSTEM .........................................1341

10.9.2 IGNITION SWITCH .......................................1342

10.9.3 INTEGRATED POWER MODULE/BODY CONTROL MODULE POWER

AND GROUNDS .........................................1343

10.10 INSTRUMENT CLUSTER..........................................1344

10.10.1 INSTRUMENT CLUSTER — BASE..........................1344

10.10.2 INSTRUMENT CLUSTER & MESSAGE CENTER (EXPORT,

LHD)...................................................1345

10.10.3 INSTRUMENT CLUSTER & MESSAGE CENTER (EXPORT,

RHD) ..................................................1346

10.11 INTERIOR LIGHTING .............................................1347

10.12 MANUAL TEMPERATURE CONTROLS ..............................1348

10.12.1 BASE MANUAL TEMPERATURE CONTROL SYSTEM, LHD .....1348

10.12.2 BASE MANUAL TEMPERATURE CONTROL SYSTEM, RHD.....1349

10.12.3 DUAL-ZONE & THREE-ZONE (FRONT) MANUAL TEMPERATURE

CONTROL SYSTEM, LHD .................................1350

10.12.4 DUAL-ZONE (FRONT) MANUAL TEMPERATURE CONTROL

SYSTEM, RHD ..........................................1351

10.12.5 THREE ZONE REAR MANUAL TEMPERATURE CONTROL

SYSTEM ...............................................1352

10.12.6 FRONT BLOWER MOTOR - RS ............................1353

10.12.7 FRONT BLOWER MOTOR - RG ............................1354

10.12.8 REAR BLOWER MOTOR..................................1355

10.13 MEMORY SYSTEM...............................................1356

10.14 OVERHEAD CONSOLE ...........................................1357

10.15 PARK ASSIST ...................................................1358

10.16 POWER DOOR LOCKS/RKE.......................................1359

10.17 POWER FOLDING MIRROR .......................................1360

10.17.1 LHD (EXPORT ONLY) ....................................1360

10.17.2 RHD (EXPORT ONLY) ....................................1361

10.18 POWER LIFTGATE SYSTEM.......................................1362

10.19 POWER SLIDING DOOR SYSTEM..................................1363

10.19.1 LEFT POWER SLIDING DOOR .............................1363

10.19.2 RIGHT POWER SLIDING DOOR............................1364

10.20 POWER SLIDING DOOR AND LIFTGATE SWITCHES ..................1365

10.21 REAR DEFOG/HEATED MIRROR...................................1366

10.22 TELECOMMUNICATION...........................................1367

10.22.1 HANDS FREE PHONE - WITH CD CHANGER ................1367

10.22.2 HANDS FREE PHONE - WITH DVD/CD CHANGER ............1368

10.23 VEHICLE THEFT SECURITY SYSTEM...............................1369

10.23.1 THATCHAM ALARM SYSTEM (EXPORT ONLY) ...............1370

10.24 WIPERS - FRONT AND REAR .....................................1371

11.0 CHARTS AND GRAPHS ...............................................1373

11.1 KDB LAB SCOPE PATTERN .......................................1373

11.2 PCI BUS LAB SCOPE PATTERN ...................................1374

xxvii

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NOTES

xxviii

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GENERAL INFORMATION

1.0 INTRODUCTION

The procedures contained in this manual include all the specifications, instructions and graphics needed to diagnose 2005 body system problems. The diagnostics in this manual are based on the failure condition or symptom being present at the time of diagnosis.

Please follow the recommendations below when choosing your diagnostic path.

1. First make sure the DRBIIIt is communicating

with the appropriate modules; i.e., if the DRBIIIt displays a “No Response” or a “Bus 6 Signals Open” condition, you must diagnose that first.

2. Read DTC’s (diagnostic trouble codes) with the

DRBIIIt.

3. If no DTC’s are present, identify the customer

complaint.

4. Once the DTC or customer complaint is identi-

fied, locate the matching test in the Table of

Contents and begin to diagnose the symptom. All component location views are in Section 8.0. All connector pinouts are in Section 9.0. All schematics are in Section 10.0. All Charts and Graphs are in Section 11.0. An * placed before the symptom description indicated a customer complaint.

When repairs are required, refer to the appropriate service information for the proper removal and repair procedure.

Diagnostic procedures change every year. New diagnostic systems may be added: carryover systems may be enhanced. READ THIS MANUAL BEFORE TRYING TO DIAGNOSE A VEHICLE DIAGNOSTIC TROUBLE CODE. It is recommended that you review the entire manual to become familiar with all the new and changed diagnostic procedures.

This book reflects many suggested changes from readers of past issues. After using this book, if you have any comments or suggestions, please fill out the form in the back of this book and mail it back to us.

1.1 SYSTEM COVERAGE

This diagnostic procedures manual covers all 2005 Chrysler Townand Country,Chrysler Voyager and Caravan vehicles. This diagnostic procedures manual also covers both left hand drive (LHD) and right hand drive (RHD) vehicles. There may be some slight differences in the location views of components. If the location views shown are on a LHD vehicle, a RHD vehicle will be symmetrically opposite.

1.2 SIX-STEP TROUBLESHOOTING PROCEDURE

Diagnosis of the body system is done in six basic

steps:

• verification of complaint

• verification of any related symptoms

• symptom analysis

• problem isolation

• repair of isolated problem

• verification of proper operation

2.0 IDENTIFICATION OF

SYSTEM

The vehicle systems that are part of the “body”

system are:

• Adjustable Pedal System (APS)

• Airbag

• Audio

• Automatic Temperature Control

• Cabin Heater

• Chime

• Communication

• Door Ajar System

• Electrically heated system

• Exterior lighting

• Instrument Cluster

• Interior Lighting

• Manual Temperature Control

• Memory Seat

• Overhead Console

• Park Assist

• Power Door Lock/RKE

• Power Folding Mirrors

• Power Sliding Doors

• Power Liftgate

• Power windows

• Telecommunications (hands free phone)

• Tire Pressure Monitor System (TPMS)

• Vehicle Theft Security System (VTSS)

• Windshield Wiper and Washer

3.0 SYSTEM DESCRIPTION AND

FUNCTIONAL OPERATION

The body system on the 2005 RS and RG consists of

a combination of modules that communicate over the

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GENERAL INFORMATION

PCI bus (Programmable Communication Interface multiplex system). Through the PCI bus, information about the operation of vehicle components and circuits is relayed quickly to the appropriate modules. All modules receive all the information transmitted on the bus even though a module may not require all information to perform its function. It will only respond to messages “addressed” to it through binary coding process. This method of data transmission significantly reduces the complexity of the wiring in the vehicle and the size of wiring harnesses. All of the information about the functioning of all the systems is organized, controlled, and communicated by the PCI bus, which is described in the Communication Section of this general information.

3.1 ADJUSTABLE PEDALS SYSTEM

The Adjustable Pedals are designed to enable the fore and aft repositioning of the brake and accelerator pedals. This results in improved ergonomics in relation to the steering wheel for taller and shorter drivers. Being able to adjust the pedal positions also allows the driver to set steering wheel tilt and seat positions to the most comfortable position available. The positions can be adjusted without compromising safety or comfort in actuating the pedals. Repositioning the pedals does not change the effort required for actuation. Changing of pedal position is accomplished by means of a motor.

Operating the adjustable pedal switch activates the pedal drive motor. The pedal drive motor changes the position of the brake and accelerator pedals. The pedal can move rearward or forward. The pedals are moved to a position that is most comfortable for the driver. The accelerator and brake pedals are moved at the same rate to ensure synchronization. Neither the motor nor mechanisms are subject to mechanical stress of brake or accelerator application.

The adjustable pedals feature is available on a non-memory/memory-equipped vehicle. The nonmemory system consists of a mechanical switch that allows pedal travel adjustment. The IPM controls the Fused B+ circuit voltage to the adjustable pedals switch through the adjustable pedals relay. The circuit opens when the IPM detects an active cruise control state or when the vehicle is in reverse. The adjustable pedals control switch is located on the right side steering column shroud. The switch is hardwired directly to the adjustable pedals motor. When the operator actuates the switch to adjust the pedals, voltage is applied to the adjustable pedals motor allowing adjustment. The memory system, known as the Memory Seat Mirror Adjustable Pedal Module (MSMAPM), is located under the driver’s seat and controls the adjustable pedals. The adjustable pedals control switch is

located on the right side steering column shroud. The switch is hardwired directly to the MSMAPM. When the operator actuates the switch to adjust the pedals, the MSMAPM controls the adjustable pedals motor movement with input from the adjustable pedals sensor. This sensor allows pedal adjustment and memory functions to be recalled from the driver door mounted memory buttons or the RKE transmitters. The adjustable pedals will not operate when in an active cruise control state or when the vehicle is in reverse.

3.2 AIRBAG SYSTEM/OCCUPANT RESTRAINT CONTROLLER SYSTEM AND OCCUPANT CLASSIFICATION SYSTEM

The Airbag System contains the following components: Occupant Restraint Controller (ORC), Airbag Warning Indicator, Clockspring, Driver and Passenger dual squib Airbags, Driver and Passenger Seat belt Tensioner (SBT), Driver and Passenger Hall-effect Seat Belt Buckle Switches (SBS), Left and Right Side Curtain Airbags, and Front and Side Impact Sensors. The ORC also monitors the Occupant Classification System (OCS) for the presence of a passenger in the front outer seat.

The Occupant Classification System contains the following components: Occupant Classification Module (OCM), Bladder and Sensor, Belt Tension Sensor, and Passenger Airbag off Indicator. The Occupant Restraint Controller (ORC) supports staged airbag deployment and remote impact sensing. Staged deployment is the ability to trigger airbag system squib inflators individually as needed to provide the appropriate restraint for the severity of the impact. The ORC has four major functions: PCI Bus communications, onboard diagnostics, impact sensing, and component deployment. The ORC also contains an energy-storage capacitor. This capacitor stores enough electrical energy to deploy the front airbag components for two seconds following a battery disconnect or failure during an impact. The ORC is secured to the floor panel transmission tunnel below the instrument panel inside the vehicle. The ORC cannot be repaired or adjusted. The ORC sends and/or receives PCI Bus messages with the Instrument Cluster (MIC), Body Control Module (BCM), and Powertrain Control Module (PCM). Diagnostic trouble codes will be set if the communication with these modules is lost or contains invalid information. The microprocessor in the ORC monitors the front impact sensor signals and the airbag system electrical circuits to determine the system readiness. If the ORC detects a monitored system fault, it sends a message to the instrument cluster via PCI bus to

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GENERAL INFORMATION

turn on theAirbag Warning Indicator.The ORC can set both active and stored diagnostic trouble codes to aid in diagnosing system problems. See DIAGNOSTIC TROUBLE CODES in this section.

The ORC uses an internal accelerometer, two front sensors and six side impact sensors, to sense the rate of vehicle deceleration and provide verification of the direction and severity of an impact. A pre-programmed decision algorithm in the ORC microprocessor determines when the deceleration rate is severe enough to require airbag system protection. The ORC also uses the driver and passenger seat belt switch status (buckled or unbuckled) to determine the level of driver airbag deployment, low medium or high. When the programmed conditions are met, the ORC sends an electrical signal to deploy the appropriate airbag system components.

WARNING: THE AIRBAG SYSTEM IS A SENSITIVE, COMPLEX ELECTROMECHANICAL UNIT. BEFORE ATTEMPTING TO DIAGNOSE OR SERVICE ANY AIRBAG SYSTEM OR RELATED STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENTS YOU MUST FIRST DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE. WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE FURTHER SYSTEM SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO DO THIS CAN RESULT IS ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY OR DEATH.

WARNING: NEVER STRIKE OR KICK THE OCCCUPANT RESTRAINT CONTROLLER, AS IT CAN DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF AN AIRBAG CONTROL MODULE IS ACCIDENTALLY DROPPED DURING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT. FAILURE TO TAKE THE PROPER PRECAUTIONS CAN RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.

TheAirbag Warning Indicator is the only point at which the customer can observe symptoms of a system malfunction. Whenever the ignition key is turned to the run or start position, the ORC performs a lamp check by turning the Airbag Warning Indicator on for 6-8 seconds.After the lamp check, if the indicator turns off, it means that the ORC has checked the system and found it to be free of discernible malfunctions. If the lamp remains on, there could be an active fault in the system or the

MIC lamp circuit may be internally shorted. If the lamp comes on and stays on for a period longer than 6-8 seconds then goes off, there is usually an intermittent problem in the system.

3.2.1 DRIVER AIRBAG

The airbag protective trim cover is the most visible part of the driver side airbag system. The protective trim cover is fitted to the front of the airbag module and forms a decorative cover in the center of the steering wheel. The module is mounted directly to the steering wheel. Located under the trim cover are the horn switch, the airbag cushion, and the airbag cushion supporting components. When supplied with the proper electrical signal, the inflator or inflators discharge the gas directly into the cushion. The airbag module cannot be repaired, and must be replaced if deployed or in any way damaged.

WARNING: THE DRIVER AIRBAG MODULE CONTAINS ARGON GAS PRESSURIZED TO OVER 17236.89 Kpa (2500 PSI). DO NOT ATTEMPT TO DISMANTLE AN AIRBAG MODULE OR TAMPER WITH ITS INFLATOR. DO NOT PUNCTURE, INCINERATE, OR BRING INTO CONTACT WITH ELECTRICITY. DO NOT STORE AT TEMPERATURE EXCEEDING 93°C (200°F). REPLACE AIRBAG SYSTEM COMPONENTS ONLY BUT INTERNAL DIFFERENCES MAY RESULT IN INFERIOR OCCUPANT PROTECTION. THE FASTENERS, SCREWS, AND BOLTS ORIGINALLY USED FOR THE AIRBAG SYSTEM COMPONENTS HAVE SPECIAL COATINGS AND ARE SPECIFICALLY DESIGNED FOR THE AIRBAG SYSTEM. THEY MUST NEVER BE REPLACED WITH ANY SUBSTITUTES. ANY TIME A NEW FASTENER IS NEEDED, REPLACE IT WITH THE CORRECT FASTENERS PROVIDED IN THE SERVICE PACKAGE OR SPECIFIED IN THE MOPAR PARTS CATALOG. FAILURE TO TAKE THE PROPER PRECAUTIONS CAN RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.

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GENERAL INFORMATION

CAUTION: Deployed Front Air Bags may or may not have live pyrotechnic material within the air bag inflator. Do not dispose of Driver and Passenger Airbags unless you are sure of complete deployment. Please refer to the Hazardous Substance Control System for Proper Disposal. Dispose of deployed air bags in a manner consistent with state, provincial, local, and federal regulations. Use the following table to identify the status of the Airbag Squib.

AIRBAG SQUIB STATUS

(1) Using a DRBIIIt read Airbag DTC’s If the following active codes are present:

ACTIVE DTC CONDITIONS SQUIB STATUS

Driver Squib 1 open Driver Squib 2 open

If Driver Squib 1 open AND IF Driver Squib 2 opens is NOT an active

If Driver Squib 2 open AND IF Driver Squib 1 open is NOT an active

If neither of the following codes is an active code:

ACTIVE DTC SQUIB STATUS

Driver squib 1 open Driver Squib 2 open

3.2.2 CLOCKSPRING

The clockspring is mounted on the steering column under the steering wheel. This assembly consists of a plastic housing which contains a flat, ribbon-like, electrically conductive tape that winds and unwinds with the steering wheel rotation. The clockspring is used to maintain a continuous electrical circuit between the instrument panel wiring and the driver airbag, the horn, and the vehicle speed control switches if equipped. The clockspring must be properly centered when it is reinstalled on the steering column following any service procedure, or it could be damaged. The clockspring cannot be repaired and it must be replaced.

Check the stored DTC’s AND IF the stored minutes for both are within 15 minutes of each other.

Check the stored DTC’s AND IF the stored minutes for Driver Squib 2 open is GREATER than the stored minutes for Driver Squib 1 by 15 minutes or more.

Check the stored DTC’s AND IF the stored minutes for Driver Squib 1 open is GREATER than the stored minutes for Driver Squib 2 by 15 minutes or more.

code.

3.2.3 PASSENGER AIRBAG

The front passenger airbag is equipped with dual

Status of Airbag is Unknown.

stage squib inflators. When supplied with the proper electrical signal the inflator or inflators discharge the gas directly into the cushion. The airbag module cannot be repaired, and must be replaced if deployed or in any way damaged.

Both Driver Squib 1 and 2 were used.

Driver Squib 1 was used; Driver Squib 2 is live.

Driver Squib 1 is live ; Driver Squib 2 was used.

Driver Squib 1 was used; Driver Squib 2 is live.

Driver Squib 1 is live; Driver Squib 2 was used.

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GENERAL INFORMATION

WARNING: THE PASSENGER AIRBAG MODULE CONTAINS INERT GAS PRESSURIZED TO 17236.89 Kpa (2500 PSI). DO NOT ATTEMPT TO DISMANTLE AN AIRBAG MODULE OR TAMPER WITH ITS INFLATOR. DO NOT PUNCTURE, INCINERATE, OR BRING INTO CONTACT WITH ELECTRICITY. DO NOT STORE AT TEMPERATURE EXCEEDING 93°C (200°F). REPLACE AIRBAG SYSTEM COMPONENTS ONLY WITH PARTS SPECIFIED IN THE MOPAR PARTS CATALOG. SUBSTITUTE PARTS MAY APPEAR INTERCHANGEABLE, BUT INTERNAL DIFFERENCES MAY RESULT IN INFERIOR OCCUPANT PROTECTION. THE FASTENERS, SCREWS, AND BOLTS ORIGINALLY USED FOR THE AIRBAG SYSTEM COMPONENTS HAVE SPECIAL COATINGS AND ARE SPECIFICALLY DESIGNED FOR THE AIRBAG SYSTEM. THEY MUST NEVER BE REPLACED WITH ANY SUBSTITUTES. ANY TIME A NEW FASTENER IS NEEDED, REPLACE IT WITH THE CORRECT FASTENERS PROVIDED IN THE SERVICE PACKAGE OR SPECIFIED IN THE MOPAR PARTS CATALOG. FAILURE TO TAKE THE PROPER PRECAUTIONS CAN RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.

AIRBAG SQUIB STATUS

(1) Using a DRBIIIt read Airbag DTC’s If the following active codes are present:

ACTIVE DTC CONDITIONS SQUIB STATUS

Passenger Squib 1 open Passenger Squib 2 open

If Passenger Squib 1 open

If Passenger Squib 2 open

Check the stored DTC’s AND IF the stored minutes for both are within 15 minutes of each other.

Check the stored DTC’s AND IF the stored minutes for Passenger Squib 2 open is GREATER than the stored minutes for Passenger Squib 1 by 15 minutes or more.

Check the stored DTC’s AND IF the stored minutes for Passenger Squib 1 open is GREATER than the stored minutes for Driver Squib 2 by 15 minutes or more.

AND IF Passenger Squib 2 open is NOT an active code.

AND IF Passenger Squib 1 open is NOT an active code.

Both Passenger Squib 1 and 2 were used.

Passenger Squib 1 was used; Passenger Squib 2 is live.

Passenger Squib 1 is live; Driver Squib 2 was used.

Passenger Squib 1 was used; Passenger Squib 2 is live.

Passenger Squib 1 is live; Passenger Squib 2 was used.

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GENERAL INFORMATION

If neither of the following codes is an active code:

ACTIVE DTC SQUIB STATUS

Passenger squib 1 open Passenger squib 2 open

Status of Airbag is Unknown.

3.2.4 SEAT BELT TENSIONER (SBT)

The driver and passenger seat belt (buckle) tensioners are mounted to the inboard side of the front seats. The seat belt buckle and seat belt switch are connected directly to the seat belt tensioner cable. At the onset of an impact event the ORC uses the seat belt tensioner to rapidly retract the seat belt buckles. With the slack removed, the occupant’s forward motion in an impact will be reduced as will the likelihood of contacting interior components. The seat belt tensioner cannot be repaired, if damaged or defective it must be replaced. The ORC continously monitors the resistance of the seat belt tensioner circuits for open and shorted conditions.

3.2.5 SEAT BELT SWITCHES (SBS)

The hall-effect driver and passenger seat belt switches provide the seat belt status, buckled or unbuckled, via hardwired inputs to the ORC. If the seat belt switch is damaged or defective the seat belt tensioner must be replaced. The ORC continuously monitors the seat belt switch circuits for open and shorted conditions.

3.2.6 DRIVER KNEE BLOCKER AIRBAG

The most visible part of the Driver Knee Blocker Airbag is the knee blocker trim cover. The knee blocker trim cover and airbag are mounted directly to the instrument panel structure below the steering column. When supplied with the proper electrical signal, the inflator discharges the gas directly into the airbag. The airbag cannot be repaired, and must be replaced if deployed or in any way damaged.

WARNING: DO NOT ATTEMPT TO MODIFY ANY PART OF YOUR ADVANCED AIRBAG SYSTEM. THE AIRBAG MAY INFLATE ACCIDENTALLY OR MAY NOT FUNCTION PROPERLY IF MODIFICATIONS ARE MADE. TAKE YOUR VEHICLE TO AN AUTHORIZED DEALER FOR ANY ADVANCED AIRBAG SYSTEM SERVICE. IF YOUR’E SEAT INCLUDING YOUR TRIM COVER AND CUSHION NEEDS TO BE SERVICED IN ANY WAY (INCLUDING REMOVAL OR LOOSENING/TIGHTENING OF SEAT ATTACHMENT BOLTS), TAKE THE VEHICLE TO YOUR AUTHORIZED DEALER. ONLY

MANUFACTURER APPROVED SEAT ACCESSORIES MAY BE USED. CONTACT YOUR AUTHORIZED DEALER F IT IS NECESSARY TO MODIFY AN ADVANCED AIRBAG SYSTEM FOR PERSONS WITH DISABILITIES.

WARNING: NEVER STRIKE OR KICK THE AIRBAG CONTROL MODULE, AS IT CAN DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF AN AIRBAG CONTROL MODULE IS ACCIDENTALLY DROPPED DURING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.

3.2.7 FRONT AND SIDE IMPACT SENSOR

The front and side impact sensors are electronic accelerometers that sense the rate of vehicle deceleration, and combined with the ORC Accelerometer Sensor provides verification of the direction and severity of an impact. Each sensor also contains an electronic communication chip that allows the unit to communicate the sensor status as well as sensor fault information to the microprocessor in the Occupant Restraint Controller. The ORC microprocessor continuously monitors all of the front and side passive restraint system electrical circuits to determine the system readiness. If the ORC detects a system fault, it sets a Diagnostic TroubleCode and controls the airbag indicator operation accordingly. The impact sensors each receive battery current and ground through dedicated left and right sensor signal and ground circuits from the ORC. The impact sensors and the ORC communicate by modulating the voltage in the sensor signal circuit. If the sensor is dropped it must be replaced.

CAUTION: Do not remove or install the impact sensors while the sensor is connected to the vehicle wiring.

3.2.8 OCCUPANT CLASSIFICATION

SYSTEM

A non-calibrated Occupant Classification Module (OCM) is the only component of the Occupant Classification System (OCS) that is available for separate service replacement, as outlined in the procedures that follow. The OCS components of the passenger side front seat cushion including the cushion frame, springs, pad, seat weight bladder and pressure sensor, seat cushion foam and the OCM are a factory-calibrated and assembled unit. Once this unit is connected to a vehicle electrically, the calibration settings are uploaded from

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GENERAL INFORMATION

the OCM and stored in the memory of the Airbag Control Module (ORC). If only the OCM is subsequently replaced, the new, non-calibrated OCM learns the proper calibration settings from the ORC after it is connected to the vehicle electrically. If any of the remaining OCS components of the passenger side, front seat cushion require replacement, they are serviced only as a factory calibrated, assembled, and tamper-evident service replacement package. This package includes the assembled frame, springs, pad, seat weight bladder and pressure sensor, foam, wiring and a calibrated OCM. When installing this package, always replace all of the existing components with the new components as a unit. Do not attempt to separate or disconnect any of the new OCS components contained in the service replacement package from each other, and do not attempt to reuse any of the replaced components in this or any other vehicle. Once any of the original factory-installed components except the OCM have been replaced with the service replacement package components, the OCM can only be serviced by replacing the entire passenger side front seat cushion unit with another complete service replacement package.

CAUTION: On vehicles equipped with the Occupant Classification System (OCS), never replace both the Airbag Control Module (ORC) and the Occupant Classification Module (OCM) at the same time. If both require replacement, replace one. Then perform the supplemental restraint verification test before replacing the other. Both the ORC and the OCM store OCS calibration data, which they transfer to one another when one of them is replaced. If both are replaced at the same time, an irreversible fault will be set in both modules.

The OCM is subsystem of the Airbag Control Module (ORC). Therefore the OCM bus message updates the ORC with the front passenger seat information via PCI Bus message. The ORC then controls the Passenger Off indicator and the Airbag Warning Indicator to provide system onboard diagnostic feedback. All OCS wiring repairs are prohibited; when wiring problems are diagnosed a Bladder Repair Kit is the only approved repair.

PASSENGER AIRBAG OFF INDICATOR

Vehicles equipped with the Occupant Classification System (OCS) include a passenger airbag off indicator located in the Switch Bank in the center of the instrument panel. Vehicles without OCS have a blank lens installed in the instrument panel. At ignition on, for a system test, the ORC low side driver grounds a yellow Light Emitting Diode (LED) circuit causing the PASSAIRBAG OFF Indicator text and icon to be illuminated.

SEAT WEIGHT SENSOR

Vehicles equipped with the Occupant Classification System (OCS) have a seat weight bladder and pressure sensor unit that is integral to the passenger front seat cushion. The pressure sensor receives a nominal five volts and a ground through dedicated hardwired circuits from the OCM. The OCM then monitors the pressure sensor output voltage.

SEAT BELT TENSION SENSOR - BTS

The Belt Tension Sensor (BTS) is designed to measure belt tension as an input to a passenger Occupant Classification System (OCS). It is used to detect high cinch loads associated with child seats and compensate for the seat cushion load to correctly classify occupant size. When a load is applied to the seat belt, the belt tension sensor measures the load. As the load changes, the circuitry of the belt tension sensor changes the output voltage of the sensor. The belt tension sensor receives a nominal five volts and a ground through dedicated hardwired circuits from the OCM. The OCM then monitors the belt tension sensor output voltage on a dedicated hardwired data communication circuit. If the vehicle has experienced any impact(s) resulting in deployment of a pyrotechnic device of any kind (airbag, seatbelt tensioner, side curtain, etc.) within the vehicle, the entire passenger seat belt retractor assembly, including the BTS, shall be replaced. Additionally, if the seat belt webbing has become cut, frayed, or worn; or if the stitching has become damaged in any way, the entire passenger seat belt retractor assembly, including the BTS, shall be replaced. The belt tension sensor cannot be repaired and, if faulty or damaged, the entire passenger side front seat belt and retractor unit must be replaced. The OCM Verification Test will also provide a BTS Verification procedure to verify the BTS function. This verification procedure requires the Miller Special Tool #8828.

BLADDER REPAIR KIT

There are only three replaceable components in the OCS, Occupant Classification Module, Bladder Repair Kit and the Passenger Airbag OFF Indicator. The Bladder repair kit contains the OCS bladder, wire harnesses, pressure sensor (Seat WeightSensor), module, seat cushion and other related structural and sound deadening components. The module and sensor connector must have a Tamper Evident material installed on the service kit module and sensor connectors. This material provides visible evidence that the assembly has been separated after the calibration process was completed. Do not install a Bladder Repair Kit if it appears that any of the components have been disconnected. The OCM can be replaced if the Airbag Control Module has uploaded the seat calibration into memory in a previous ignition cycle and the new OCM has a blank VIN and no calibration data stored in memory.

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NOTE: An OCM can only be replaced in a passenger front seat if the seat is equipped with the original OCS module, bladder, sensor and wiring. NOTE: Servicing the OCS may create additional active and stored trouble codes that must be resolved before the vehicle can be returned to the owner. The OCS Verification Test will also set active DTCs if the procedure is not completed successfully.

The Miller Special Tool, MRL-9077 and the DRBIIIt are needed to successfully complete the system Verification Test. The DRBIIIt may report the following errors and failure messages during the procedure.

NEW DRBIIIT FEATURES

ORC Menu

The DRBIIIt ORC System Test screen will display the following:

VIN verification -- Original VIN and Current VIN

PCM Monitor - PCM Active On The Bus or PCM Not Active On The Bus The DRBIIIt ORC Input/Outputs screen will display the following:

OCM Status: Seat Class 0 (Empty) Seat Cass 1 (Rear Facing Infant car Seat or RFIS) Seat Class 2 (6 year old or Child) Seat Class 3 (greater than or equal to 5th Percentile Female) Seat Class 4 (less than 5th Percentile Female) Seat Class 5 (Undetermined) The DRBIIIt ORC Miscellaneous screen will display the following:

Configure Airbag On-Off Switch

1. No Airbag On-Off Switch

2. Pass OCM Only

VIN Verification - Original VIN and Current VIN

Clear VIN Mismatch

OCS Verification - OCS Verification

Test process errors:

Test In Progress Mode 33 Not Supported Subfunction not supported Test Busy - Repeat Test Conditions for Test Not Correct Routine Already Running Routine was Never Started Press any key to continue, then restart the verification test.

Test failed conditions:

Test Failed - Active DTCs Present Test Failed - Seat is Empty Test Failed - Seat Occupied Test Failed - Weight Above Threshold Test Failed - Weight Below Threshold Test Failed - Temperature Out of Range Test Failed - Seat Pressure Too High Test Failed - Seat Pressure Too Low Test Failed - Seat Pressure Not Stable Test Failed - Temperature Out of Range Test Failed - Seat Pressure Too Low Test Failed - Power Up Time Too Short Test Failed - Power Up Time Too Long Test Failed - K Empty Count is 0 Test Failed - No EOL Calibration Test Failed - K Allow is FF Allow the vehicle seat and interior temperature to stabilize, check voltage supplies and repair any other active DTCs before restarting the System Verification test.

The OCS has been Verified or The OCS has NOT been Verified

WARNINGS:

OCS Menu

The DRBIIIt OCM Input/Output screen will display the following:

OCS Status --- 90, 919, 929, 939, 949, 959 The DRBIIIt OCM Sensors screen will display the following:

Bladder Output --- XXX A/D counts

Pas BTS Output --- XXX A/D counts The DRBIIIt OCM OCS Info Monitor screen will display the following:

Pass BTS -- Enabled or Disabled

System Verification

The DRBIIIt OCM System Test screen will display the following

PCM Monitor - PCM Active On The Bus or PCM Not Active On The Bus

Clear VIN Mismatch - Clear VIN Mismatch Complete

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND WAIT TWO MINUTES BEFORE PROCEEDING.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.

WARNING: TO AVOID PERSONAL INJURY OR DEATH ON VEHICLES EQUIPPED WITH THE OCCUPANT CLASSIFICATION SYSTEM (OCS), ONLY THE OCCUPANT CLASSIFICATION MODULE (OCM) AND THE PASSENGER SEAT BLADDER AND CUSHION SERVICE KIT ARE THE ONLY PARTS SERVICED.

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GENERAL INFORMATION

WARNING:

IF THE OCCUPANT CLASSIFICATION MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS CAN RESULT IN ACCIDENTALAIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH. TO AVOID PERSONAL INJURY OR DEATH ON VEHICLES EQUIPPED WITH THE OCCUPANT CLASSIFICATION SYSTEM (OCS), ONLY THE OCCUPANT CLASSIFICATION MODULE (OCM) AND THE SEAT CUSHION TRIM MAY BE SERVICED SEPARATELY. ALL OTHER COMPONENTS OF THE PASSENGER SIDE FRONT SEAT CUSHION ASSEMBLYMUST BE SERVICED ONLY AS A COMPLETE FACTORY-CALIBRATED, ASSEMBLED AND TAMPER-EVIDENT SERVICE REPLACEMENT PACKAGE. THIS PACKAGE INCLUDES THE FRAME, SPRINGS, PAD, BLADDER AND PRESSURE SENSOR, FOAM, WIRING AND A CALIBRATED OCM. WHEN INSTALLING THIS PACKAGE ALWAYS REPLACE ALL OF THE EXISTING COMPONENTS WITH THE NEW COMPONENTS AS A UNIT. DO NOT ATTEMPT TO SEPARATE OR DISCONNECT ANY OF THE NEW OCS COMPONENTS IN THE SERVICE REPLACEMENT PACKAGE FROM EACH OTHER, AND DO NOT ATTEMPT TO REUSE ANY OF THE REPLACED COMPONENTS IN THIS OR ANY OTHER VEHICLE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN FAILURE OF THE PASSENGER AIRBAG TO DEPLOY WHEN REQUIRED, OR IN PASSENGER AIRBAG DEPLOYMENT WHEN NOT REQUIRED.

3.2.9 SPECIAL TOOLS

Some airbag diagnostic tests will require the use of special tools, airbag load tools, 8443 for testing squib circuits and the Occupant Classification Seat Weight Tool 9077. The load tools contain fixed resistive loads, jumpers and adapters. The fixed loads are connected to cables and mounted in a storage case. The cables can be directly connected to some airbag system connectors. Jumpers are used to convert the load tool cable connectors to the other airbag system connectors. The adapters are connected to the module harness connector to open shorting clips and protect the connector terminal during testing. When using the load tool follow all of the safety procedures in the service information for disconnecting airbag system components. Inspect the wiring, connector and terminals for damage or

misalignment. Substitute the airbag load tool in place of a Driver or Passenger Airbag, curtain airbag, clockspring, or seat belt tensioner (use a jumper if needed). Then follow all of the safety procedures in the service information for connecting airbag system components. Read the module active DTC’s.If the module reports NOACTIVE DTC’s the defective component has been removed from the system and should be replaced. If the DTC is still active, continue this process until all components in the circuit have been tested. Then disconnect the module connector and connect the matching adapter to the module connector. With all airbags disconnected and the adapter installed the squib wiring can be tested for open and shorted conditions.

3.2.10 DIAGNOSTIC TROUBLE CODES

Airbag diagnostic trouble codes consist of active and stored codes. If more than one code exists, diagnostic priority should be given to the active codes. Each diagnostic trouble code is diagnosed by following a specific testing procedure. The diagnostic test procedures contain step-by-step instructions for determining the cause of the trouble codes. It is not necessary to perform all of the tests in this book to diagnose an individual code. Always begin by reading the diagnostic trouble codes with the DRBIIIt. This will direct you to the specific test(s) that must be performed. In certain test procedures within this manual, diagnostic trouble codes are used as a diagnostic tool.

3.2.10.1 ACTIVE CODES

The code becomes active as soon as the malfunction is detected or key-on, whichever occurs first. An active trouble code indicates an on-going malfunction. This means that the defect is currently there every time the Occupant Restraint Controller checks that circuit or component. It is impossible to erase an active code. Active diagnostic trouble codes for the airbag system are not permanent and will change the moment the reason for the code is corrected. With the exception of the warning lamp trouble codes or malfunctions, when a malfunction is detected, the airbag lamp remains lit for a minimum of 12 seconds or as long as the malfunction is present.

3.2.10.2 STORED CODES

Airbag codes are automatically stored in the ORC’s memory as soon as the malfunction is detected. A stored code indicates there was an active code present at some time. When a trouble code occurs, the Airbag Warning Indicator illuminates for 12 seconds minimum (even if the problem existed for less than 12 seconds). Once the code is no

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GENERAL INFORMATION

longer active, the time in minutes it was active, and the number of times the ignition has been cycled since the problem was last detected will be displayed. The minimum time shown for any code will be one minute, even if the code was actually present for less than one minute. Thus, the time shown for a code that was present for two minutes 13 seconds, for example, would be three minutes. If a malfunction is detected a diagnostic trouble code is stored and will remain stored. When and if the malfunction ceases to exist, an ignition cycle count will be initiated for that code. If the ignition cycle count reaches 100 without a reoccurrence of the same malfunction, the diagnostic trouble code is erased and that ignition cycle counter is reset to zero. The ignition cycle counter will be reset and diagnostic trouble code will continue to be a stored code, If the malfunction reoccurs before the count reaches 100. If a malfunction is not active while performing a diagnostic test procedure, the active code diagnostic test will not locate the source of the problem. In this case, the stored code can indicate an area to inspect. Maintain a safe distance from all airbags while performing the following inspection. If no obvious problems are found, erase stored codes, and with the ignition on wiggle the wire harness and connectors, rotate the steering wheel from stop to stop. Recheck for codes periodically as you work through the system. This procedure may uncover a malfunction that is difficult to locate.

3.3 AUDIO SYSTEM

On radios without an external amplifier, the term output refers to the path between the radio and the speaker. This type of circuit can be monitored all the way through the speaker connections by the radio assembly. When the radio displays a shorted output DTC with this type of system, the speaker, radio, or wiring could be at fault.

On radios with an external amplifier, the term “output” refers to the circuit between the radio connector and the amplifier. The radio is capable of monitoring only this portion and can tell nothing about the circuit between the amplifier and the speakers. Consequently, a shorted output DTC on this type of system would only refer to this circuit. A faulty speaker could not cause this DTC.

3.3.1 NAVIGATION RADIO

The optional navigation radio system receives GPS signals from up to eight satellites to display the position and direction of the vehicle. Map information is supplied through a DVD-ROM. An electronic gyrosensor and the vehicle’s speed sensor enable the system to display the present vehicle position even in locations where GPS signals may be blocked.

When a destination is selected, the navigation system uses information from the map to quickly calculate a route. As the vehicle is driven along the chosen route, the operator is guided with pictorial displays and voice prompts. For complete operating instructions, refer to the manual included with the vehicle.

Some of the radios are on the PCI Bus system. The PCI Bus inputs into the radio are used for VF dimming, remote steering wheel controls and cabin EQ preference. PCI Bus outputs from the radio are used for the Name Brand Speaker (NBS) relay activation, as well as cabin EQ preference.

The radios have the capability of containing multiple vehicle unique equalization curves (cabin EQ preferences) within the radio. These curves will reside in the radio’s flash memory. The radio is capable of storing up to 20 unique equalization curves. The latent curves can be selected via the Front Control Module transmitting a PCI Bus message to the radio in response to a radio request for equalization message. Upon receipt of a valid equalization select message response, the radio will switch to output the corresponding equalization curve.

All the radios are capable of displaying faults and allowing certain actuation tests through the use of the DRBIIIt. When attempting to perform PCI Bus diagnostics, the first step is to identify the radio in use in the vehicle.

When trouble shooting output shorts or “output” error messages, the following applies:

3.3.2 REMOTE RADIO CONTROLS

These radios can be controlled via remote radio switches (optional). These switches are located on the back side of the steering wheel. They control mode, preset, seek up, seek down, volume up and volume down functions.

These functions are inputs to the Body Control Module and can be read with the DRBIIIt under “body computer”. The switches are a multiplexed signal to the BCM. The radio control MUX circuit is a 5 volt line that is pulled to ground through different value resistors built into the switches. This causes a voltage drop to be seen by the BCM and it sends a specific message to the radio on the PCI Bus circuit. The radio then responses to the message.

This circuit is fairly simple to troubleshoot. The circuit must be complete from the switches in the steering wheel to the BCM. The ground must be complete so that the switches can cause the voltage drop for the BCM to see. The circuit passes through the clockspring so continuity through this devise must be verified.

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3.3.3 CD CHANGER

The new in-dash CD Changer is designed to fit into the existing cubby bin in the center stack. This new cartridge-less CD Changer is controlled by your radio, and allows you to individually load up to four discs at a time. However, due to its compact design, the CD Changer can only carry out one operation at a time. For example, you can not load a new disc while playing another at the same time. Each operation happens sequentially.

The radio unit installed with your system provides control over all features of the CD Changer with the exception of the CD load and eject functions, which are controlled by buttons located on the front of the CD Changer. The radio also supplies the power, ground, PCI Bus, left and right speaker output through a single DIN cable. All features you would expect, such as Disc Up/Down, Track Up/ Down, Random and Scan are controlled by the radio, which also displays all relevant CD Changer information on the radio display.

The CD Changer contains a Load/Eject button and an indicator light for each of the four disc positions. The individual light indicates whether a CD is currently loaded in that particular chamber of the CD Changer. Pressing the individual Load/Eject button for a particular chamber will eject a disc currently present in that chamber.If the chamber is currently empty, actuating the Load/Eject button will position that chamber to receive and load a new disc in that chamber.

3.3.4 DVD/CD CHANGER

The DVD/CD Changer (if equipped) is located in the instrument panel below the radio. The DVD/CD Changer can hold one DVD at a time. Three RCA jacks on the front of the unit will allow the use of MP3 players, video systems or camcorders.

3.4 BODY CONTROL MODULE

The body control module (BCM) supplies vehicle occupants with visual and audible information and controls various vehicle functions. To provide and receive information, the module is interfaced to the vehicle’s serial bus communications network (PCI). This network consists of the powertrain control module (PCM), the engine control module (ECM) diesel, the mechanical instrument cluster (MIC), the front control module (FCM), the occupant restraint controller (ORC), the occupant classification module (OCM), the compass/mini-trip (CMTC), the electronic vehicle information center (EVIC), the controller antilock brake (CAB), the hands free module (HFM), the park assist module, the HVAC control module (ATC & MTC), the power sliding door (Left & Right) modules (PSD), the power

liftgate module (PLG), the Audio system (which includes the Radio, DVD, CD Changer and Amplifier), the memory seat/mirror/adjustable pedals module (MSMAPM), the RKE/thatcham alarm module (export), the transmission control module (NAG1 and Diesel auto only) and the sentry key remote entry module (SKREEM). The BCM is operational when battery power is supplied to the module.

The body control module provides the following

features:

• Power Door Locks

• Automatic Door Lock

• Door Lock Inhibit

• Central Locking (with VTSS Only)

• Battery Protection

• The BCM will automatically turn off all exterior

lamps after 3 minutes and all interior lamps after 15 minutes after the ignition is turned off, if they are not turned off by the driver.

• Chime Driver

• Compass/Minitrip Support

• Interior Lighting (Courtesy/Reading Lamps)

• BCM Diagnostic Reporting

• Electronic Liftgate Release (with Power Door

Locks)

• Exterior Lighting

• Headlamp Time Delay (with/without Autohead-

lamps)

• Automatic Headlamps (with electrochromatic

mirror)

• Illuminated Entry

• Fade to Off

This feature dims the interior lighting (courtesy lamps) gradually if the BCM does not receive any new inputs that would cause the interior lamps to remain on.

• PWM Instrument Panel Dimming

• Door Lock Inhibit

This feature disables the door lock functions if the key is in the ignition and either front door is ajar. Pressing the RKE lock/unlock button under these conditions, result in normal lock/unlock activation.

• Power Sliding Door Switch Inputs

The BCM has 4 switch inputs for the power sliding door feature: Located in the overhead console are the Left and Right side sliding door switches to activate either or both sliding doors under the proper conditions. Also there are B-Pillar switches located on the Left and Right B-pillar posts.

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GENERAL INFORMATION

• Power Liftgate Switch Input

The BCM has 1 Liftgate switch input located in

the overhead console

• Power Lockout Switch Input

The BCM has 1 Lockout switch that when enabled will disable the B-Pillar sliding door switches from activating either sliding door when depressed. When replacing a body control module there are 2 modules available, a Base and a Midline. The Midline controller is used on vehicles that have Power Door Locks. If a vehicle is equipped with the Vehicle Theft Security System, the midline controller becomes a premium when the theft feature is enabled.

NOTE: Do not swap the body control module between vehicles or body control modules off the shelf.

Engineering does not recommend that service, dealers or the plant swap Body Control Modules (BCM) between vehicles or off the shelf. The BCM has internal diagnostic capability that assists in diagnosing the system. When an “Open” or a “Short” circuit exists, the diagnostic tool can be used to read the BCM codes. The codes are very descriptive in identifying the appropriate feature that has faulted. The BCM also learns what features are on the vehicle and if modules are swapped the BCM could set false DTCs based on what it learned.

3.5 CHIME WARNING SYSTEM

The BCM monitors the door/liftgate ajar switches, multifunction switches, headlight switch, ignition switch, PCI bus, and the diagnostic tool to perform various chime operations. The BCM uses a low-side driver to control the chime located in the cluster.

The chime system provides the Driver with warning chimes for:

• Seat belt

• Exterior lights on

• Key-in Ignition

• Key-in Accessory

• Engine temperature critical

• Low washer fluid

• Turn signals on

• Dome light on

• Low oil pressure

• Any warning lamp announcement

• High-speed warning Gulf Coast Countries (GCC)

only

The output sound intensity of the chime is ap-

proximately 72 decibels.

3.5.1 CHIME PRIORITY

The following list indicates the priority of the chime when more than one chime is active at the same time:

• Seat belt warning

• High-speed warning Gulf Coast Countries (GCC)

only

• Turn signal on

• Chime request

• Warning lamp announcement

The cluster is responsible to set priority on all warning lamp announcement chimes.

3.5.2 CHIME ON CONDITIONS

The following is a list of the chime warnings and when they will sound.

Driver’s Seat

belt Unbuckled:

Exterior Lights

Key-In Ignition: Ignition is in the lock position,

Turn Signal On:

Dome Lights On: Ignition is in the lock position,

Sounds for approximately 662 secondswhentheigntionisturned on and driver’s seat belt is not buckled, as a reminder to the driver to buckle the seat belt.

Ignition is in the lock position,

On:

the driver door is ajar, and the headlight switch is left in any position, other than auto or off. The chime will sound as a warning to the driver until one of the above conditions is removed or until the battery protection time of 3 minutes has expired.

driver door is ajar and the key is in the ignition. The chime will sound until one of the above conditions is removed or until the batteryprotection timeof15minutes has expired.

When the BCM detects a turn signal input continuously for

1.0mile/0.6kmandthevehiclespeed isgreaterthan 15mph/24kph,the chimewillsounduntilthe specific turn signal is cancelled.

driver door ajar, and the dome light switch is left in the on position. The chime will sound until one of the above conditions is removed or until the battery protectiontimeof 15 minuteshas expired.

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GENERAL INFORMATION

Low Oil Pres-

The chime will sound when the

sure:

engine is operating and the oil pressuredropsbelow4psi/27.5kPa.

Engine

Temperature

Critical:

The chime will sound when the engine is operating and the coolant temperature exceeds 252°F/ 122C or 234°/112C(diesel). The chime is continuous at 257°F/ 125C and will chime for 4 minutes and stop if the temperature drops below 255°F/123C.

Low Washer

Fluid

The chime will sound when the washer fluid drops below a specific level.

Warning Lamp

Announcement:

A chime will sound to alert the driver to scan the instrument panel and overhead console to see which warning lamp is illuminated. The door/liftgate ajar warning lamp will appear without a chime if the vehicle is running and a door or the liftgate is opened.Achime will sound if the door or liftgate is still open and the vehicle speed is greater than 4mph/6kph.

High-speed

warning Gulf

Coast Countries

(GCC) only

Thechime will sound, acting asa warning to the driver that the vehicle speed has exceed 75mph62/120kph63.

3.5.3 WARNING LAMP ANNOUNCEMENT

Low Fuel Lamp: The cluster will request a single

chime after the indicator is illuminated.

Volt Lamp: The cluster will request a single

chime after the indicator is illuminated.

Oil Pressure

Lamp:

Liftgate Ajar

Lamp:

Fasten Seat Belt

Lamp:

Check Engine

Lamp:

The cluster will request a single chime after illuminating the indicator above 450rpm vehicle operation.

The BCM determines when to chime for liftgate ajar.

The MIC will request a single chime from the BCM when the ignition is turned to the unlock/ run/start positions if the driver seat belt is not buckled and 2 seconds after seatbelt warning chime ends.

The cluster will request a single chime after the indicator is illuminated.

Low Washer Fluid Lamp:

The cluster will request a single chime after the indicator is illuminated.

Engine Tempera-

ture Lamp:

The cluster will request a single chime when the indicator is first illuminated at 252°F/122C.

3.5.4 OTHER CHIME ON CONDITIONS

Programming of

an Additional

Key Fob:

Programming for

Rolling Door

Locks:

Asingleclusterchimewillsound, which signals that the program mode has been initiated.

Whentheprogramming hasbeen completed, a single tone from the chime system, will occur.

3.6 COMMUNICATION

The Programmable Communication Interface or PCI Bus is a single wire multiplexed network capable of supporting binary encoded messages shared between multiple modules. The PCI bus circuit is identified as D25 and is white with a violet tracer. Additional tracer colors may be added to the violet in order to distinguish between different module connections. The modules are wired in parallel. Connections are made in the harness using splices. The following modules are used on the RS/RG:

• Body Control Module

• Front Control Module

• Occupant Restraint Controller

• Occupant Classification Module

• Controller Antilock Brake

• Powertrain Control Module (Gas)

• Transmission Control Module (NAG1 and Diesel

Auto Only)

• Engine Control Module (Diesel)

• Radio

• Amplifier

• CD Changer

• DVD/CD Changer

• Hands Free Module

• Automatic Temperature Control Module

• A/C Heater Control Module (MTC)

• Sentry Key Remote Entry Module (SKREEM)

• Memory Seat/Mirror/Adjustable Pedals Module

(MSMAPM)

• Overhead Console

• Mechanical Instrument Cluster

• Left Sliding Door Control Module

• Right Sliding Door Control Module

• Thatcham Alarm Module (Export)

• Power Liftgate Module

• Park Assist Module

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GENERAL INFORMATION

Each module provides its own bias and termination in order to transmit and receive messages. The bus voltage is at zero volts when no modules are transmitting and is pulled up to about seven and a half volts when modules are transmitting.

The bus messages are transmitted at a rate averaging 10800 bits per second. Since there is only voltage present when the modules transmit and the message length is only about 500 milliseconds, it is ineffective to try and measure the bus activity with a conventional voltmeter. The preferred method is to use the DRBIIIt lab scope. The 12v square wave selection on the 20-volt scale provides a good view of the bus activity. Voltage on the bus should pulse between zero and about seven and a half volts. Refer to the following figure for some typical displays.

The PCI Bus failure modes are broken down into two categories. Complete PCI Bus Communication Failure and individual module no response. Causes of a complete PCI Bus Communication Failure include a short to ground or battery on the PCI circuit. Individual module no response can be caused by an open PCI circuit at the module, or an open battery or ground circuit to the affected module.

Symptoms of a complete PCI Bus Communication Failure would include but are not limited to:

• All gauges on the MIC stay at zero

• All telltales on MIC illuminate

• MIC backlighting at full intensity

• Dashed lines in the overhead console ambient

temperature display

• Noresponse received from any module on the PCI

bus (except the PCM/ECM)

• No start (if equipped with Sentry Key Immobi-

lizer)

Symptoms of Individual module failure could include any one or more of the above. The difference would be that at least one or more modules would respond to the DRBIIIt.

Diagnosis starts with symptom identification. If a complete PCI Bus Communication Failure is sus-

pected, begin by identifying which modules the vehicle is equipped with and then attempt to get a response from the modules with the DRBIIIt.Ifany modules are responding, the failure is not related to the total bus, but can be caused by one or more modules PCI circuit or power supply and ground circuits. The DRBIIIt may display “BUS +/- SIGNAL OPEN” or “NO RESPONSE” to indicate a communication problem. These same messages will be displayed if the vehicle is not equipped with that particular module. The CCD error message is a default message used by the DRBIIIt and in no way indicates whether or not the PCI bus is operational. The message is only an indication that a module is either not responding or the vehicle is not equipped.

NOTE: For 2005 model year, some vehicles will integrate the Transmission Control Module and Powertrain Control Module into a single control module. This new module is the Next Generation Controller for DaimlerChrysler and will be referred to as the Powertrain Control Module (PCM). The Transmission Control Module is part of the Powertrain Control Module.

Diagnostic procedures and DTC numbers are some of the changes you will see which reflect the new combined module technology. The PCM will have four color coded connectors C1 through C4, (C1-BLK, C2-ORANGE, C3-WHITE, C4-GREEN), each PCM connector will have 38 pins each. Two new tools are used for probing and repairing the New PCM connectors. A New tool to release the pins from the PCM connectors Miller #3638 is introduced, you must use the Miller tool #3638 to release the connector pins or harness and connector damage will occur. Also a New tool for probing connectors Miller #8815 is introduced, you must use the Miller tool #8815 to probe the PCM pins or harness and connector damage will occur. There is also a new Verification test and module replacment procedure for the PCM.

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3.8 EXTERIOR LIGHTING SYSTEM

3.8.1 HEADLAMP POWER

The Headlamp Switch is a direct input to the BCM. The BCM sends a BUS message to the FCM informing it of a headlamp switch status change. The FCM then turns on power to the headlamps through four “fuseless” circuits. These circuits are electronically controlled and continuously monitored for malfunctions. Power is supplied to each filament in a separate circuit. For vehicles equipped with daytime running Lamps (DRL), the FCM electronically steps down the headlamp voltage to provide the desired illumination.

3.8.2 HEADLAMP SWITCH

The Headlamp Switch uses a multiplexed (MUX) circuit to the Body Control Module (BCM). The Headlamp Switch controls the Fog lamp relay, Park lamps and the Low and High headlamps. The BCM then sends a signal through the PCI Bus line to the FCM as to what state the switch has selected. The FCM energizes the high side output drivers to turn ON the desired lamps.

3.7 DOOR AJAR SYSTEM

The door ajar and liftgate ajar states are used as inputs for the Body Control Module (BCM). The BCM uses these inputs to determine exactly what position the doors and liftgate are in. The DRBIIIt will display the state of the door ajar and the liftgate ajar switches in Inputs/Outputs. It’s important to note, that when any door, or the liftgate is closed, the switch state on the DRBIIIt will show OPEN. When any door, or the liftgate is open the switch state on the DRBIIIt will show CLOSED. During diagnosis, if a door or the liftgate is closed and the DRBIIIt displays the switch state as CLOSED, it indicates a shorted ajar circuit. If the door or the liftgate is open and the DRBIIIt displays the switch state as OPEN, it indicates an open ajar circuit.

3.8.3 PARK LAMP RELAY

The Park Lamp Switch is a direct input to the BCM. The BCM sends a BUS message to the FCM informing it to turn on the park lamp relay. The park lamp relay is then powered through low side control of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions.

3.8.4 FOG LAMP RELAY

The Fog Lamp switch is a direct input to the BCM. The BCM sends a BUS message to the FCM informing it to turn on the fog lamp relay. The fog lamp relay is then powered through low side control of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions. Fog lamp functionality is not equipped on all vehicles. The FCM “learns” that the vehicle is equipped with fog lamps by reading the BCM BUS message.

3.8.5 FOG LAMPS

The BCM controls the operation of the fog lamp relay that turns the fog lamps ON and OFF. The Fog lamps can only be ON when the park and low beams are ON. If the high beams are switched ON then the Fog lamps will be automatically turned OFF.

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GENERAL INFORMATION

3.8.6 EXTERIOR LIGHTING BATTERY SAVER

The BCM monitors the status of, and controls, the Park Lamps, Headlamps and Fog Lamp relays. If any exterior lamps are left ON after the ignition is turned OFF, the BCM will turn them OFF after 3 minutes.

3.8.7 AUTO HEADLAMPS

This feature is available on vehicles equipped with both the Electrocromatic Mirror (ECM) and the Compass/Mini-Trip Computer (CMTC). When the BCM detects a day/night signal from the CMTC, an ECM is present and Auto Headlamp mode is selected.

3.9 FRONT CONTROL MODULE

The Front Control Module (FCM) is an electrical control and interface center located in the engine compartment. When it is mated to the Power Distribution Center (PDC), it is referred to as the Integrated Power Module (IPM). The IPM, with its fuses and relays provides power and signal distribution throughout most of the vehicle. The FCM receives both hard wire and digital electronic inputs from the vehicle electrical system through the PDC. Based on these inputs and the ignition switch position, it provides direct power feeds and relay control to some of the vehicles’ most critical electrical systems.

The Front Control Module provides the following features:

Controlled power feeds:

• Front airbag system

• Headlamp power

• EATX module power (4 speed only)

• Front washer motor

• Rear washer motor

• Cabin Heater

• Brake shift interlock system

Relay controls:

• Fog lamp relay (when equipped)

• Park lamp relay

• Front wiper on relay

• Front wiper high/low relay

• Accessory relay

• Horn relay

• Front & rear blower relay

• Name brand speakers (NBS) relay

• Adjustable pedals relay (non-memory)

• Electronic back light (EBL) run only relay

Electrical inputs:

• Headlamp battery supplies1&2

• Module battery supply

• Power ground

• Ignition switch RUN or START position status

• Ignition switch START only status

• PCI Bus

• Stop lamp switch

• Horn switch

• Back-up switch

• Wiper park switch

• Washer fluid level switch

• Brake fluid level switch

• Ambient temperature sensor

• Right park lamp outage

• Left park lamp outage

• Battery IOD

• Battery (+) connection detection

• Flash reprogramming voltage

3.9.1 CONTROLLED POWER FEEDS

Front airbag system

The FCM provides power to the Occupant Restraint Control (ORC) system through two “fuseless” circuits (ORC RUN/START, and ORC RUN only). These circuits are electronically controlled and continuously monitored for malfunctions. Power is supplied while the ignition switch is in the RUN and START positions on pin 48 of the FCM connector, and in the RUN only position on pin 29.

Headlamp power

The headlamp switch is a direct input to the BCM. The BCM sends a PCI Bus message to the FCM informing it of a headlamp switch status change. The FCM then turns on power to the headlamps through four “fuseless” circuits. These circuits are electronically controlled and continuously monitored for malfunctions. Power is supplied to each filament in a separate circuit. For vehicles equipped with Daytime Running Lamps (DRL), the FCM electronically steps down the headlamp voltage to provide the desired illumination.

EATX power

The electronic automatic 4 speed transmission module is powered when the ignition switch is in the UNLOCK, RUN or START positions. This circuit is electronically controlled and continuously monitored for malfunctions. Power is supplied through pin 27 of the FCM connector.

Front washer motor

The front washer switch is a direct input to the BCM. The BCM sends a PCI Bus message to the

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GENERAL INFORMATION

FCM informing it of a request to wash. The front washer motor is then powered through low side control inside the FCM. This circuit is electronically controlled and continuously monitored for malfunctions. In addition, the FCM electronically protects the washer motor from system voltages higher than 16 volts by automatically switching off the low side circuit.

Rear washer motor

The rear washer switch is a direct input to the BCM. The BCM sends a PCI Bus message to the FCM informing it of a request to wash. The rear washer motor is then powered through low side control inside the FCM. This circuit is electronically controlled and continuously monitored for malfunctions. In addition, the FCM electronically protects the washer motor from system voltages higher than 16 volts by automatically switching off the low side circuit.

Cabin Heater

When the ignition is in Run, the FCM monitors the PCI bus for the Cabin Heater Activation request. The Automatic or Manual Temperature Control initiates this request only when all conditions for the Cabin Heater activation are favorable. The request carries the status bit that the FCM requires to activate its Cabin Heater Assist Control output. This output is a low side driver (coming from FCM pin 15) which supplies a ground signal to the Cabin Heater (pin 5). When the Cabin Heater receives this ground signal input, it interprets this as an activation signal. The FCM low side driver is also capable of diagnostic sensing. The driver will sense an open circuit when the driver is off, and will sense a short to voltage when the driver is on. The FCM will set DTCs for both of these types of faults. For additional information, refer to Cabin Heater under General Information and Diagnostic Procedures in the manual.

Brake shift interlock system

The brake shift interlock solenoid receives power from both high side and low side controls inside the FCM. The high side control is on the same circuit as the EATX module power, and the low side control comes through pin 47 of the FCM connector. The solenoid is controlled by the low side driver when the brake pedal is pressed. Both circuits are continuously monitored for malfunctions.

3.9.2 RELAY CONTROLS

Fog lamp relay

The fog lamp switch is a direct input to the BCM. The BCM sends a PCI Bus message to the FCM informing it to turn on the fog lamp relay. The fog lamp relay is then powered through low side control of the FCM. This circuit is electronically controlled

and continuously monitored for malfunctions. Fog lamp functionality is not equipped on all vehicles. The FCM “learns” that the vehicle is equipped with fog lamps by reading the BCM PCI Bus message.

Park lamp relay

The park lamp switch is a direct input to the BCM. The BCM sends a PCI Bus message to the FCM informing it to turn on the park lamp relay. The park lamp relay is then powered through low side control of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions.

Front wiper on relay

The front wiper switch is a direct input to the BCM. The BCM sends a PCI Bus message to the FCM informing it to turn on the front wiper on relay. The front wiper on relay is then powered through low side control of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions.

Front wiper high/low relay

The front wiper switch is a direct input to the BCM. The BCM sends a PCI Bus message to the FCM informing it to turn on the front wiper high/ low relay. The relay switches power between the low speed and high speed windings of the wiper motor. The front wiper high/low relay is powered through low side control of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions.

Accessory relay

The accessory relay works in conjunction with the FCM’s power accessory delay feature to control the operation of the radio, power windows, washer motors, wiper motors and power outlet. The accessory relay is turned on through low side control on pin 35 of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions. Depending on the ignition switch position, the accessory relay will remain on or will time-out and turn off. The accessory relay remains on in the RUN and ACCY positions of the ignition switch. In the UNLK and OFF positions, the relay will remain energized for 45 seconds then turn off. During this time-out period, if the driver or passenger doors are opened, the relay will turn off immediately. While the ignition switch is in the START position, the relay will also drop-out, then resume operation. Accessory relay operation is most noticeable by observing the operation of the radio or blower functions.

Horn relay

The horn relay operates through a direct wire input to the FCM from the horn switch (FCM pin

17) , or a PCI Bus message from the BCM. The relay

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GENERAL INFORMATION

responds to the horn switch, remote door lock and VTA alarm functions. The horn relay is powered through low side control on pin 10 of the FCM. Under normal operating conditions, if the horn is pressed for longer than 30 seconds, the FCM will automatically deactivate the horn to prevent damage to it. The FCM will re-activate control of the relay after a 25 second cool-down period. This circuit is electronically controlled and continuously monitored for malfunctions.

Front and rear blower relay RS with MTC

Upon ignition on, the A/C-Heater Control Module sends a blower relay on request to the FCM over the PCI Bus. The front blower relay and the rear blower relay, if equipped, are then powered through low side control through FCM pin 30. The relay provides the high side to the blower motor, and the blower speed is governed through low side control in the A/C-Heater Control Module. This circuit is electronically controlled and continuously monitored for malfunctions.

RG with MTC

Upon power up (Power switch on), theA/C-Heater Control Module sends a blower relay on request to the FCM over the PCI Bus. The front blower relay is then powered through low side control through FCM pin 30. The relay provides the high side to the blower motor, and the blower speed is governed through low side control in the A/C-Heater Control Module. This circuit is electronically controlled and continuously monitored for malfunctions.

RS & RG with ATC

Upon power up (Power switch on), the Automatic Temperature Control (ATC) Module sends a blower relay on request to the FCM over the PCI Bus. The front blower relay and the rear blower relay, if equipped, are then powered through low side control through FCM pin 30. The relay provides the high side to the Blower Motor Power Module, and the blower speed is governed through control in the ATCModule.This circuit is electronically controlled and continuously monitored for malfunctions.

Name Brand Speakers (NBS) relay

The NBS relay operates through the vehicle bus interface between the radio and the FCM. When the radio is turned on, the radio sends a PCI Bus message to the FCM. The NBS relay is then powered on through low side control on pin 11 of the FCM. The relay supplies power to the amplified speaker, and ground is supplied through the radio. This circuit is electronically controlled and continuously monitored for malfunctions.

Electronic Back Light (EBL) relay

The rear defrost switch is part of the Automatic Temperature Control orA/C-Heater Control Module

(Manual Temp). When the ignition switch is in the RUN position and the rear defrost switch is turned on, the ATC or A/C-Heater Control Module sends a PCI Bus message to the FCM. The EBL run only relay is then powered through low side control on pin 31 of the FCM. The relay provides the high side to the rear window defrost grid, and ground is attached to the vehicle body. The FCM will only allow the rear defrost to operate in the RUN position. This circuit is electronically controlled and continuously monitored for malfunctions.

Adjustable Pedals Relay (Non-Memory)

The Adjustable Pedals Relay is only on nonmemory Adjustable Pedals System equipped vehicles. The relay is supplied battery voltage from the IPM and is electronically controlled with a low side driver within the FCM. The relay is energized when the transmission is in reverse and when cruise control operation is engaged. This action disables theAdjustable Pedals System from movement. This circuit is continuously monitored for proper function.

3.9.3 ELECTRICAL INPUTS

Headlamp battery supplies1&2—12 volt input on pins 1 and 2. Battery supply voltage for switching headlamp circuits only.

Module battery supply — 12 volt input on pin 9. Battery supply voltage for all other FCM operations.

Power ground — Ground source on pin 8 for all FCM operations.

Ignition switch RUN or START position status — 12 volt input on pin 37. Allows the FCM to

determine the ignition switch status for related FCM operations.

Ignition switch START only status — 12 volt input on pin 19. Allows the FCM to discriminate between RUN/START input and START for related FCM operations.

PCI Bus — Approximately 7.5 volt input on pin 22. Allows the FCM to communicate with other modules on the vehicle bus.

Stop lamp Switch status — 12 volt input on pin

44. Provides for brake shift interlock function. Horn Switch — Ground input on pin 17. Primary

means for engaging the horn. Back-up switch — Ground input on pin 39. Input

is converted to a PCI Bus status message for use by other modules.

Wiper park switch — Ground input on pin 16. Used to determine park placement of wipers. Also

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GENERAL INFORMATION

used as feedback to FCM to determine correct operating mode of wipers.

Washer fluid level switch — Ground input to pull-up on pin 18. Ground is switched into the circuit when washer bottle fluid level is low.

Brake fluid level switch — Ground input to pull-up on pin 36. Ground is switched into the circuit when brake fluid level is low.

Ambient temperature sensor — Resistive input to pull-up on pin 25. Corresponding voltage level is converted to a PCI Bus message for use by other modules on the bus.

Right park lamp outage — 12 volt input on pin

21. Used to determine if right park lamp circuit is operating properly.

Left park lamp outage — 12 volt input on pin 41. Used to determine if left park lamp circuit is operating properly.

Battery IOD — 12 volt input on pin 20. The FCM enters a low power consumption mode when the ignition is turned OFF. This low current draw battery supply keeps the microprocessor functioning in the low power mode.

Battery (+) connection detection — 12 volt input on pin 38. The battery connection on the PDC incorporates the use of an internal switch to determine if the connector is properly mated and the Connector Positive Assurance (CPA) is engaged. If the CPAis not properly engaged, a voltage on pin 38 will be interpreted as an unseated connector and a fault will set.

Flash programming voltage — 20 volt input on pin 42. When a DRBIIIt is connected and the proper flash reprogramming sequence is selected, the 20 volt signal will be applied through pin 42.

3.10 HEATING & A/C SYSTEM

3.10.1 AUTOMATIC TEMPERATURE CONTROL (ATC)

3.10.1.1 MODULE USAGE

CAUTION: Do not swap ATC Modules from vehicle to vehicle. Software versions differ between models and between model years. Installing a ATC Module with software that is incompatible for given vehicle can result in either improper or failed HVAC system operation.

3.10.1.2 SYSTEM AVAILABILITY

EXCEPT EXPORT

• TheATC system is a Three-ZoneAir Conditioning

System.

EXPORT

• Two different types of systems are currently

available for these vehicles.

c Dual-Zone Air Conditioning System for all

except LWB vehicles.

c Three-Zone Air Conditioning System for all

LWB vehicles.

CABIN HEATER, EXPORT WITH DIESEL ENGINE

• A Cabin Heater is used in conjunction with the

ATC system. The Cabin Heater is designed to supply the vehicle’s occupants with heat prior to the engine reaching operating temperature. For additional information on this system, refer to Cabin Heater under General Information and Diagnostic Procedures in this manual.

3.10.1.3 SYSTEM CONTROLS

The ATC Module:

• is fully addressable with the DRBIIIt.

• communicates over the Programmable Commu-

nication Interface Multiplex System (PCI) Bus.

• provides an A/C request over the PCI Bus to the

Powertrain Control Module (PCM) when compressor operation is desired.

• for exports with diesel engines, provides a Cabin

Heater activation request over the PCI Bus to the Front Control Module (FCM) when conditions are favorable for Cabin Heater operation.

• uses input from the evaporator temperature sen-

sor to prevent evaporator freeze up while maintaining optimum cooling performance.

• uses input from infrared (I/R) sensors, which

measure surface temperature, to maintain occupant comfort levels.

c The I/R sensors are mounted in the instru-

ment panel center bezel.

• can be operated in a manual mode.

• provides a blower relay on request over the PCI

Bus to the Front Control Module (FCM) when blower operation is desired.

• controls front blower operating speed, providing

10 speeds in manual mode and infinite speeds in automatic mode.

• provides a cold engine blower lockout function.

c A Blower Speed Clamping feature minimizes

occupant discomfort by controlling the

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GENERAL INFORMATION

amount of warm air coming out of the HVAC system should the Powertrain Control Module (PCM) disable A/C Compressor operation while the Automatic Temperature Control (ATC) is set in an automatic mode. The PCM disables the A/C compressor if the A/C pressure is too low, if the A/C pressure is too high, if engine overheating is immanent, or if an engine overheating condition exists. The ATC clamps the blower speed if the outside air temperature is greater than 50°F (10°C) and the PCM has disabled the A/C compressor. This means that the ATC wil not adjust blower speed automaticaly when the clamping feature is enabled, e.g. if the clamping feature is enabled while in Auto Lo the blower will continue to run in low speed; if the clamping feature is enabled while in Auto Lo and the operator selects Auto Hi the blower will continue to run in low speed; if the clamping feature is enabled while in Auto Hi the blower will continue to run at the highest speed. In any case the operator can manually change the blower speed as desired. When diagnosing blower related symptoms verify that none of the above conditions for disabling the A/C compressor exist before diagnosing the blower circuits and components.

• controls rear blower operating speed, providing

10 speeds in manual mode and infinite speeds in automatic mode.

c The separate front and rear Blower Motor

Controllers operate as follows: When blower operation is desired, the Blower Motor Controller provides a 10.0 volt signal to the ATC Module over a control circuit. The ATC Module provides a variable duty cycle ground to the 10.0 volt signal based on input from the blower switch. When the blower switch is set to LO speed, the ATC Module provides a short duty cycle (less time grounding the signal voltage). As higher blower speeds are requested, the ATC Module increases the duty cycle (more time grounding the signal voltage). When the blower switch reaches HI speed, the duty cycle increases to where the signal pattern is almost a flat line (with brief voltage spikes).

• controlsthe front and rear electric door actuators’

operation.

c A simplified control system for operation of

the mode, recirculation, and temperature control actuators provides positive positioning without the complexity of feedback from position sensors. The ATC Module knows the number of operating actuator revolutions required for full door travel as well as the

number of actuator commutator pulses per revolution. Using these parameters, the ATC Module runs the actuator for the number of commutator pulses that correspond to the desired door position. To maintain accuracy, the system recalibrates itself periodically at known zero and full travel conditions.

• activates and deactivates the Rear ATC Switch.

The Rear ATC Switch (Three-Zone Only):

• provides desired rear blower speed input to the

ATC Module.

• provides desired rear blend and mode door posi-

tion input to the ATC Module.

The Dual-Zone ATC system uses:

• two front, two-wire electric blend door actuators.

• one front, two-wire electric mode door actuator.

• one, two-wire electric recirculation door actuator.

The Three-Zone ATC system uses:

• two front, two-wire electric blend door actuators.

• one front, two-wire electric mode door actuator.

• one, two-wire electric recirculation door actuator.

• one rear, two-wire electric blend door actuator.

• one rear, two-wire electric mode door actuator.

System Relays

• The Integrated Power Module (IPM) houses and

provides power to the A/C Clutch Relay, Front Blower Motor Relay, and Rear Blower Motor Relay.

3.10.1.4 SYSTEM REVISIONS

The 2005 ATC system remains mostly carryover from 2004. Revisions to the 2005 ATC system include:

• all new version 0012 software.

• a new telltale in the instrument cluster for RG

vehicles equipped with a Cabin Heater. The telltale illuminates when the Cabin Heater is operational. Messages bussed from the ATC Module tell the instrument cluster when to illuminate the telltale and when to shut it off.

3.10.1.5 SYSTEM DIAGNOSTICS

Fault detection is through active and stored Diagnostic Trouble Codes (DTCs)

• DTCs are displayed by the DRBIIIt.

• Active DTCs are those which currently exist in

the system. The condition causing the fault must be repaired in order to clear this type of DTC.

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GENERAL INFORMATION

• Stored DTCs are those which occurred in the

system since the ATC Module received the last 9clear diagnostic info9 message.

The AC Cooldown Test:

• is actuated with the DRBIIIt.

• checks A/C system performance based on evapo-

rator temperature sensor input.

• forces the ATC to initiate the Cabin Heater Acti-

vation request when the vehicle is equipped with a Diesel Cabin Heater Assist.

WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE DCHA’s EXHAUST WHEN OPERATING THE DCHA. REFER TO VENTING THE DCHA’s EXHAUST UNDER CABIN HEATER IN THE GENERAL INFORMATION PORTION OF THIS SECTION FOR PROPER EXHAUST VENTING INSTRUCTIONS. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

• will pass the air conditioning portion of this test

if the evaporator temperature drops 6.7°C (20°F) within two minutes of starting this test.

• messages (air conditioning related only) display

on the DRBIIIt after running this test.

c These messages will clear after paging back

out of this test. Therefore, it is important to note all of the AC Cooldown test messages before doing so.

c All Cabin Heater-related DTCs display under

Cabin Heater, Read DTCs.

• will cause the DELAY and Snowflake VF seg-

ments on the ATC to flash for 162 seconds (RG with DCHA only). If the air conditioning portion of this test fails, the DELAY and Snowflake VF segments will continue to flash until the vehicle is driven more than three miles.

3.10.2 MANUAL TEMPERATURE CONTROL (MTC)

3.10.2.1 MODULE USAGE

CAUTION: Do not activate the A/C Cooldown Test with the engine off. Failure to follow these instructions can result in internal damage to the DCHA Heater Module.

c The FCM monitors the PCI bus for the Cabin

Heater Activation request. The request carries the status bit that the FCM requires to activate its’ Cabin Heater Assist Control output. This output is a low side driver (coming from FCM pin 15) which supplies a ground signal to the Cabin Heater (pin 5). When the Cabin Heater receives this ground signal input, it interprets this as an activation signal.

c The FCM low side driver is also capable of

diagnostic sensing. The driver will sense an open circuit when the driver is off, and will sense a short to voltage when the driver is on. The FCM will set DTCs for both of these types of faults. For additional information, refer to Cabin Heater under General Information and Diagnostic Procedures in the manual.

• will not run the air conditioning portion of this

test if ambient temperature is below 12°C (53°F).

c The forced Cabin Heater activation will occur

even if the air conditioning portion of this test fails to initiate because AC Cooldown test criteria was not met. When activated, the DCHA will operate for approximately seven minutes. Three minutes to run and four minutes to purge.

VEHICLE COMPATIBILITY

FOR MTC MODULES

MODEL YEAR SOFTWARE

VERSION*

RS 2001, 2002 0614, 0700

2003 0802** 2004 0812, 0900 2005 0900

RG 2001, 2002 0614, 0700

2003 – 2005 0802**

* Use The DRBIIIt to verify which version soft-

ware the module is using by selecting Module Display from the ATC menu.

Installing a module with software that is incompatible for a given model year can result in either improper or failed HVAC system operation.

** Backward compatible.

3.10.2.2 SYSTEM AVAILABILITY

EXCEPT EXPORT

• Three different types of systems are currently

available for these vehicles.

c Single-Zone Air Conditioning System

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GENERAL INFORMATION

c Dual-Zone Air Conditioning System c Three-Zone Air Conditioning System

EXPORT

• Two different types of systems are currently

available for these vehicles.

c Single-Zone Air Conditioning System c Dual-Zone Air Conditioning System

CABIN HEATER, EXPORT WITH DIESEL ENGINE

• A Cabin Heater is used in conjunction with the

HVAC system. The Cabin Heater is designed to supply the vehicle’s occupants with heat prior to the engine reaching operating temperature. For additional information on this system, refer to Cabin Heater under General Information and Diagnostic Procedures in this manual.

3.10.2.3 SYSTEM CONTROLS

The A/C-Heater Control Module:

• is fully addressable with the DRBIIIt.

• communicates over the Programmable Commu-

nication Interface Multiplex System (PCI) Bus.

• provides an A/C request to the Powertrain Con-

trol Module (PCM) over the PCI Bus when compressor operation is desired.

• uses input from the evaporator temperature sen-

sor to prevent evaporator freeze up while maintaining optimum cooling performance.

• for exports with diesel engines, provides a Cabin

Heater activation request to the Front Control Module (FCM) over the PCI Bus when conditions are favorable for Cabin Heater operation.

• for RS vehicles, provides a blower relay on re-

quest to the FCM over the PCI Bus upon ignition on.

• for RG vehicles, provides a blower relay on re-

quest to the FCM over the PCI Bus when the Power switch on the A/C-Heater Control Module is turned on.

• controls front blower operating speed. For RS

vehicles, the four speed settings are Low,M1,M2, and High. For RG vehicles the five speed settings are Low, M1, M2, M3, and High.

• for RS vehicles uses the blower switch to control

system on/off and blower speed.

• for RG vehicles uses the power switch to control

system on/off and the blower switch to control blower speed.

• forRS vehicles uses the rear wiper/washer switch

to control rear wiper/washer operation.

• for RS vehicles, provides a rear wiper on request

to the Body Control Module (BCM) when rear wiper operation is desired.

• for RS vehicles, provides a rear washer on re-

quest to the Body Control Module (BCM) when rear washer operation is desired.

• controls EBL operation.

• on three-zone systems, activates and deactivates

the Rear A/C-Heater Control.

• on three-zone systems, controls rear blower oper-

ating speed. The three speed settings are Low, Med, and High.

• controls the front and the three-zone system rear

electric door actuators’ operation.

c A simplified control system for operation of

the mode, recirculation, and temperature control actuators provides positive positioning without the complexity of feedback from position sensors. TheA/C- Heater Control Module knows the number of operating actuator revolutions required for full door travel as well as the number of actuator commutator pulses per revolution. Using these parameters, the A/C - Heater Control Module runs the actuator for the number of commutator pulses that correspond to the desired door position. To maintain accuracy, the system recalibrates itself periodically at known zero and full travel conditions.

On Three-Zone systems, the Rear A/C-Heater Control:

• controls rear blower motor operating speed. The

three blower speeds are Low, Med, and High.

• provides desired rear blend and mode door posi-

tion input to the A/C-Heater Control Module.

The Single-Zone HVAC system uses:

• one, two-wire electric blend door actuator.

• one, two-wire electric mode door actuator.

• one, two-wire electric recirculation door actuator.

The Dual-Zone HVAC system uses:

• two, two-wire electric blend door actuators.

• one, two-wire electric mode door actuator.

• one, two-wire electric recirculation door actuator.

The Three-Zone HVAC system uses:

• two front, two-wire electric blend door actuators.

• one front, two-wire electric mode door actuator.

• one, two-wire electric recirculation door actuator.

• one rear, two-wire electric blend door actuator.

• one rear, two-wire electric mode door actuator.

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GENERAL INFORMATION

System Relays

• The Integrated Power Module (IPM) houses and

provides power to the A/C Clutch Relay, Front Blower Motor Relay, and Rear Blower Motor Relay.

3.10.2.4 SYSTEM REVISIONS

The 2005 MTC system remains mostly carryover from 2004. Revisions to the 2005 MTC system include:

• a new telltale in the instrument cluster for RG

vehicles equipped with a Cabin Heater. The telltale illuminates when the Cabin Heater is operational. Messages bussed from the MTC Module tell the instrument cluster when to illuminate the telltale and when to shut it off.

3.10.2.5 SYSTEM DIAGNOSTICS

Fault detection is through active and stored Diagnostic Trouble Codes (DTCs)

• DTCs are displayed by the DRBIIIt.

• Active DTCs are those which currently exist in

the system. The condition causing the fault must be repaired in order to clear this type of DTC.

• Stored DTCs are those which occurred in the

system since the A/C-Heater Control Module received the last 9clear diagnostic info9 message.

The A/C Cooldown Test:

• is actuated with the DRBIIIt.

• checks A/C system performance based on evapo-

rator temperature sensor input.

• will not run if ambient temperature is below

12.7°C (55°F).

• will pass if the evaporator temperature drops

6.7°C (20°F) within two minutes of starting the test.

• faults display on the DRBIIIt as test messages

only after running the test.

• faults will not display on the DRBIIIt as Diag-

nostic Trouble Codes.

• for RS vehicles will cause the Rear Wipe/Wash

and A/C status indicators on the A/C-Heater Control Module to flash alternately while the test is running.

• for RG vehicles will cause the PWR and A/C

status indicators on the A/C - Heater Control Module to flash alternately while the test is running.

c The A/C status indicator will flash twice per

second to indicate that the A/C Cooldown Test needs to be run. The A/C status indicator will stop flashing twice per second if either the A/C Cooldown Test returns passed, or if any but-

ton on the control is pressed, or if the ignition is cycled and the odometer shows greater than eight miles.

The HVAC Door Recalibration function:

• is actuated with the DRBIIIt.

c After completing HVAC Door Recalibration,

the DRBIIIt will the store the total span and the status of each door actuator. Selecting HVAC Door Cal Monitor in the System Tests will display this information.

• homes and repositions door actuators.

• monitors for door span faults on the actuator

circuits.

• faults display on the DRBIIIt as test messages

only after running the test.

• faults will not display on the DRBIIIt as Diag-

nostic Trouble Codes.

• for RS vehicles will cause the Rear Wipe/Wash

and RECIRC status indicators on the A/C-Heater Control Module to flash alternately while the test is running.

• for RG vehicles will cause the PWR and RECIRC

status indicators on the A/C - Heater Control Module to flash alternately while the test is running.

c The RECIRC status indicator will flash twice

per second to indicate that the HVAC Door Recalibration Test needs to be run. The RECIRC status indicator will stop flashing twice per second if either the HVAC Door Recalibration Test returns passed, or if any button on the control is pressed, or if the ignition is cycled and the odometer shows greater than eight miles.

The Actuator Circuit Test:

• is actuated with the DRBIIIt.

• monitors for shorted actuator circuits.

• allowsservice to easily diagnose and troubleshoot

up to three simultaneous shorts.

• supplements the continuous diagnostics on the

actuator drive system.

• faults display on the DRBIIIt as test messages

only after running the test.

• faults will not display on the DRBIIIt as Diag-

nostic Trouble Codes.

When Performing the Actuator Circuit Test

CAUTION: Shorted rear door driver circuits can cause additional Actuator Circuit Test messages to set for circuits where no condition exists to cause a fault.

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CAUTION: To ensure a proper diagnosis, repair all Short Too Complex messages first, all rear door driver circuit related messages second, all common door driver circuit related messages third, and all front door driver circuit related messages last.

CAUTION: The DRBIIIT can display up to three Actuator Circuit Test messages at a time. After repairing each Actuator Circuit Test message, cycle the ignition switch, then rerun the Actuator Circuit Test to ensure no new messages exist.

• The Short Too Complex message:

c indicates that a specific determination of

which lines are shorted could not be made.

c is caused by more than three drivers being

shorted in the same direction. For example, four drivers all shorted to ground, or two or more drivers shorted with at least one driver shorted to ignition/battery and one driver shorted to ground.

• Messages displaying:

c XXX Driver/Circuit Shorted to Ignition/

Battery will set on a per-driver basis.

c XXX Driver/Circuit Shorted to Ground will

set on a per-driver basis.

c the same two drivers/circuits shorted to

ignition/battery as-well-as shorted to ground indicates that two actuator driver circuits are shorted together.

• When the test returns passed, then troubleshoot-

ing should proceed to clearing faults and running the HVAC Door Recalibration system test as a final check of system health.

3.11 CABIN HEATER

NOTE: The Cabin Heater, also known as the Diesel Cabin Heater Assist (DCHA), will be referred to as the DCHA throughout most of the General Information and the Diagnostic Procedures in this manual.

3.11.1 GENERAL SAFETY INFORMATION

VENTING INSTRUCTIONS. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORMING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

WARNING: ALWAYS DISCONNECT THE VEHICLE’S BATTERY PRIOR TO PERFORMING ANY TYPE OF WORK ON THE DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

WARNING:NEVER ATTEMPT TO REPAIR THE DCHA HEATER MODULE OR ANY OF ITS INTERNAL COMPONENTS. ALWAYS PERFORM DCHA COMPONENT REPLACEMENT IN ACCORDANCE WITH THE SERVICE INFORMATION. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

CAUTION: Do not actuate the DCHA Field Mode Test with the engine off. Failure to follow these instructions can result in internal damage to the DCHA Heater Module.

CAUTION: Always Perform The Cabin Heater Pre-Test Prior To Performing Any Other Cabin Heater Test For The Test Result To Be Valid.

NOTE: Do not disconnect the vehicle’s battery or the DCHA’s main power-supply while the DCHA is in operation or in run-down mode. Failure to follow these instructions can result in excess emissions from the DCHA Heater Module.

NOTE: Failure to prime the Dosing Pump after draining the DCHA fuel line will prevent DCHA heater activation during the first attempt to start the heater. This will also set a Diagnostic Trouble Code (DTC) in the DCHA Control’s memory. Do not perform the Dosing Pump Priming Procedure if an attempt was made to start the DCHA without priming the Dosing Pump first. This will put excess fuel in the DCHA Heater Module and cause smoke to emit from the DCHA exhaust pipe when heater activation occurs.

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GENERAL INFORMATION

NOTE: Waxed fuel can obstruct the fuel line and reduce flow. Check for the appropriate winter grade fuel and replace as necessary.

3.11.2 COMPONENT DESCRIPTION AND OPERATION

3.11.2.1 DCHA ASSEMBLY

The DCHA is a supplemental heater designed to pre-heat the engine’s coolant in order to supply the vehicle’s occupants with heat prior to the engine reaching operating temperature. The DCHA assembly mounts underneath the vehicle on the left side floor pan near the front door opening. The DCHA assembly connects to the vehicle’s heater hoses and has a fuel supply line that connects to the vehicle’s fuel tank.

The DCHA assembly consists of a:

• combustion air fan assembly

• burner housing

• burner insert

• control unit/heat exchanger

• combustion chamber

• dosing pump

3.11.2.2 COMBUSTION AIR FAN

The combustion air fan assembly includes the:

• combustion air fan

• combustion air fan inlet

• fuel supply inlet

The combustion air fan delivers the air required for combustion from the combustion air inlet to the burner insert.

3.11.2.3 BURNER HOUSING

The burner housing includes the:

• coolant inlet

• coolant outlet

• exhaust outlet

bustion pipe to heat the exchanger. The glow plug/ flame sensor, located in the burner insert, ignites the fuel/air mixture during heater start up. After heater start up, the glow plug/flame sensor operates in the flame sensor function. The glow plug/flame sensor is an electrical resistor by design, and is located in the burner insert opposite the flame side.

3.11.2.5 CONTROL UNIT/HEAT EXCHANGER

The control unit/heat exchanger includes the:

• control unit

• temperature sensor

• overheat protection

• heat exchanger

• connector terminal

The control unit controls and monitors combustion operation. The control unit is ventilated by means of a ventilation hose routed from the combustion air collector compartment of the burner. The heat exchanger transfers the heat generated by combustion to the coolant circuit. The control unit/ heat exchanger and the burner housing are an assembly and must not be disassembled.

The temperature sensor senses the coolant temperature in the heat exchanger as an electrical resistance. This signal is sent to the control unit for processing.

The overheat protection, controlled by the temperature resistor,protects the heater against undue operating temperatures. The overheat protection will switch the heater off if the water temperature exceeds 105°C (221°F).

3.11.2.6 DOSING PUMP

The dosing pump is a combined delivery, dosing, and shut-off system for the fuel supply of the heater. The dosing pump receives its supply of fuel from the vehicle’s fuel tank.

3.11.3 OPERATION

The burner housing accommodates the burner insert and is combined with the control unit/heat exchanger as an assembly.

3.11.2.4 BURNER INSERT

The burner insert includes the:

• combustion pipe fuel cross section

• glow plug/flame sensor

Inside the burner insert, fuel is distributed across the combustion-pipe fuel cross section. Combustion of the fuel/air mixture takes place within the com-

3.11.3.1 VENTING THE DCHA’S EXHAUST

WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE DCHA’s EXHAUST WHEN OPERATING THE DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

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WARNING:

ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORMING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

CAUTION: When using a powered exhaust ventilation system, do not attach the exhaust ventilation hose directly to the DCHA exhaust pipe. Too much suction can prevent DCHA operation.

• When using a powered exhaust ventilation sys-

tem, affix the ventilation hose to the DCHA exhaust pipe or to the vehicle in such a manor that the end of the ventilation hose remains approximately three inches away from the end of the DCHA exhaust pipe.

• When using a non-powered exhaust ventilation

system, affix the ventilation hose directly to the DCHA exhaust pipe.

3.11.3.2 ACTIVATION

When the ignition is in Run, the FCM monitors the PCI bus for the Cabin Heater Activation request. The Automatic or Manual Temperature Control initiates this request only when all conditions for Cabin Heater activation are favorable (see below). The request carries the status bit that the FCM requires to activate its Cabin Heater Assist Control Output. This output is a low side driver (coming from FCM pin 15) which supplies a ground signal to the Cabin Heater (pin 5). When the Cabin Heater receives this ground signal input, it interprets this as an activation signal. The FCM low side driver is also capable of diagnostic sensing. The driver will sense an open circuit when the driver is off, and will sense a short to voltage when the driver is on. The FCM will set DTCs for both of these types of faults.

For vehicle’s with a Manual Temperature Control system, the DCHA will activate only:

• when the engine is running.

• when the coolant temperature is below 66°C

(151°F).

• when the fuel tank has greater than 1/8 of a tank

of fuel.

• when the Power switch on the A/C - Heater

Control Module is on.

• when the Blend control on the A/C - Heater

Control Module is set above 90% reheat (within 2 detents of the full heat position).

• once per ignition cycle, when the ambient tem-

perature is below 9°C (49°F), and the vehicle speed is above 25 km/h (15.5 mph) for two min-

utes, and the Blend control on the A/C - Heater Control Module is set anywhere from 80% to 90% reheat (3 to 4 detents from the full heat position). Under this circumstance, the DCHA will remain active for five minutes unless additional input is supplied to the DCHA.

• when the Front Control Module (FCM) sees the

Cabin Heater Activation request that is bussed from the A/C - Heater Control Module.

For vehicle’s with aAutomaticTemperature Control system, the DCHA will activate only when the:

• VIN indicates that the vehicle has a diesel engine

• vehicle’s odometer reads more than 5 miles.

• engine speed is above 500 rpm.

• coolant temperature is below 66°C (151°F).

• fuel tank has greater than 1/8 of a tank of fuel.

• Power switch on the Automatic Temperature

Control is on.

• Driver Temperature Control on the Automatic

Temperature Control is set above 22°C (72°F).

• Front Control Module (FCM) sees the Cabin

HeaterActivation request that is bussed from the Automatic Temperature Control.

When the DCHA starting sequence begins, a DCHA active telltale illuminates in the instrument cluster and the glow plug and the combustion air fan are activated. After 30 seconds, the fuel dosing pump begins operating and the combustion air fan operation is suspended for 3 seconds. Subsequently, the combustion air fan speed is increased in two ramps within 56 seconds to nearly full load operation. After a stabilization phase of 15 seconds, the combustion air fan speed is again increased in a ramp within 50 seconds to nearly full load. After reaching full load fuel delivery, the glow plug is deactivated and the combustion air fan operation is increased to full load. During the subsequent 45 seconds, as well as in normal operation, the glow plug functions as a flame sensor to monitor the flame condition.After all these events, the automatically controlled heating operation starts.

In case of a no flame or a flame out condition, a restart is automatically initiated. If the no flame condition persists, fuel delivery is stopped and the heater enters an error lockout mode with a rundown of the combustion air fan. This will set one or more DTCs in the DCHA Control’s memory. If six continuous attempts to start the heater fail due to one or more faults in the DCHA system, the heater enters a heater lockout mode. This will set DTC B1813 along with any other fault(s) that the DCHA Control identified.

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3.11.3.3 HEATING

During the automatically controlled heating operation, when the coolant temperature reaches 76°C (169°F), the heater will switch to a part load operation. When the coolant temperature reaches 83°C (181°F) or if the heater runs for longer than 76 minutes the heater will switch to a control idle period. If the coolant temperature drops to 73°C (163°F) during a control idle period, the heater will perform a regular starting sequence into full load operation. A drop in coolant temperature to 66°C (151°F) during part load operation will cause the heater to switch to a full load operation.

3.11.3.4 DEACTIVATION

For vehicles with a Manual Temperature Control system, the DCHA will deactivate if the:

• engine is turned off.

• coolant temperature reaches 83°C (181°F).

• heater runs longer than 76 minutes (for normal

automatic controlled heating operation).

• heater reaches 5-minute timeout period (for once

per ignition cycle operation).

• fuel tank has less than 1/8 of a tank of fuel.

• Power switch on the A/C - Heater Control Module

is off.

• Blend Control on the A/C - Heater Control Mod-

ule is set below 75% reheat. 5 detents For vehicle’s with aAutomaticTemperature Control

system, the DCHA will deactivate if the:

• engine speed drops below 500 rpm.

• engine is turned off.

• coolant temperature reaches 83°C (181°F).

• heater runs longer than 76 minutes.

• fuel tank has less than 1/8 of a tank of fuel.

• Power switch on the Automatic Temperature

Control is off.

• Comfort level is attained as determined by the

temperature setting on the Automatic Tempera-

ture Control.

When the heater is deactivated, the combustion stops and a run-down sequence begins. During the run-down sequence, the combustion air fan continues operation to cool down the heater. The fan is automatically switched off after the run-down sequence is complete. The run-down time and the combustion air fan speed depend on the heater operating condition at the time of deactivation. Run-down time is approximately 175 seconds when deactivated in full load operation and approximately 100 seconds when deactivated in part load

operation. This also shuts off the DCHA active telltale in the instrument cluster.

3.11.3.5 SYSTEM REVISIONS

The 2005 DCHA system remains mostly carryover from 2004. Revisions to the 2005 DCHA system include:

• a new telltale in the instrument cluster which

illuminates when the Cabin Heater is operational. Messages bussed from either the ATC or MTC Module tells the instrument cluster when to illuminate the telltale and when to shut it off.

3.11.4 DIAGNOSTICS

The DCHA is fully addressable with the DRBIIIt. System tests include a Field Mode Test to activate the DCHA for diagnostic testing purposes. The DCHA Control will store up to three DTCs in its memory. If the Controller detects a new fault in the DCHA system, one that is not already stored in its memory, it will clear the oldest of the three stored DTCs, and it will store the new fault’s DTC. If the Controller detects a reoccurrence of a stored fault, it will overwrite that fault’s DTC with the most recent occurrence.

For vehicles equipped with Automatic Temperature Control (ATC), the AC Cooldown Test will also activate the DCHA for diagnostic testing purposes. TheAC Cooldown Testis actuated with the DRBIII. The test checks A/C system performance based on evaporator temperature sensor input. It also forces the ATC to initiate a Cabin Heater Activation request when the vehicle is equipped with a Diesel Cabin Heater Assist (DCHA). The air conditioning related portion of this test will not run if ambient temperature is below 12°C (53°F). However, the forced Cabin Heater activation will occur even if the air conditioning portion of this test fails to initiate because test criteria was not met. The air conditioning related portion of this test will pass if the evaporator temperature drops 6.7°C (20°F) within two minutes of starting this test. Only air conditioning related messages display on the DRBIIIt after running this test. These messages will clear after paging back out of this test. Therefore, it is important to note all of the AC Cooldown test messages before doing so. Running the AC Cooldown test will cause the DELAY and Snowflake VF segments on the ATC to flash for 162 seconds. If the air conditioning portion of this test fails, the DELAY and Snowflake VF segments will continue to flash until the vehicle is driven more than three miles.

3.12 INSTRUMENT CLUSTER

The Instrument Cluster receives and sends messages to other modules via the PCI bus circuit. The

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indicator lamps will illuminate briefly for a bulb check when the ignition is turned from off to run. All of the gauges receive their information via the PCI bus from the powertrain control module and body control module.

The gauges and the LEDs are not individually replaceable thereby requiring complete replacement of the Instrument Cluster if a repair is necessary. In the event that the Instrument Cluster loses communication with other modules on the PCI bus, the cluster will display “no bus” in the VF display.

The Trip/Reset button is used to switch the display from trip to total mileage. Holding the button when the display is in the trip mode will reset the trip mileage. This button is also used to put the cluster into self-diagnostic mode. The odometer display uses blue-green vacuum fluorescent digital characters.

On base models, the Instrument Cluster has three gauges: Speedometer,fuel and temperature. A red dot appears through openings in the Instrument Cluster face (P-R-N-D-2-1) to indicate the gear selected.

With other models, the Instrument Cluster may also include a tachometer and use a vacuumfluorescent shift indicator.

The high-line Instrument Cluster features Electroluminescent Illumination of the gauge faces (EL Panel). This feature eliminates the use of bulbs for gauge/panel lighting. In a manner similar to fluorescent lights, a/c voltage from an inverter integrated circuit chip is applied to the phosphorescent material, causing it to glow. The phosphorescent material is screen-printed onto flexible Mylar sheets that form the gauge faces.

The odometer display and door/liftgate ajar indicators turn on when a door is opened to assist both the customer and service technician to view the odometer without turning the ignition on.

On models with AutoStick, the display includes an O/D OFF indicator that is illuminated when the driver presses the Overdrive Off button on the transaxle shifter.

For complete details of the Instrument Cluster, refer to the RS/RG Service Manual.

3.12.1 INSTRUMENT CLUSTER SELF TEST

1. Depress and hold the Odometer Reset button.

2. Turn the ignition switch to on.

3. Release the Odometer reset button.

The Instrument Cluster will illuminate all indicators and step the gauges through several calibration points. Also, the odometer will display any stored codes that may have set.

3.12.2 MESSAGE CENTER (EXPORT ONLY)

The Message Center is above the brow of the Instrument Cluster. It houses the following warning indicators: Water & Fuel, High Beam, Left and Right turn signals, Glow Plug, and Supplimental Heat. On base models equipped with the threespeed transaxle, these indicators appear in the face of the cluster. The Security Alarm set indicator is now a large red circle symbol.

3.13 INTERIOR LIGHTING

3.13.1 COURTESY LAMP CONTROL

The body controller has direct control over all of the vehicle’s courtesy lamps. The body computer will illuminate the courtesy lamps under any of the following conditions:

1. Any door ajar and courtesy lamp switch on the

headlamp switch is not in the dome off position.

2. The courtesy lamp switch on the headlamp

switch is in the dome on position.

3. A Remote Keyless Entry unlock message is re-

ceived.

4. Driver door unlocked with key (with VTSS only).

3.13.2 ILLUMINATED ENTRY

Illuminated entry will be initiated when the customer enters the vehicle by unlocking the doors with the key fob, or with the key if the vehicle is equipped with vehicle theft alarm. Upon exiting the vehicle, if the lock button is pressed with a door open, illuminated entry will cancel when the door closes. If the doors are closed and the ignition switch is turned on, the illuminated entry also cancels. The illuminated entry feature will not operate if the courtesy lamp switch is in the dome off position.

3.13.3 INTERIOR LIGHTING BATTERY

SAVER

If any of the interior lamps are left on after the ignition is turned off, the BCM will turn them off after 8 minutes. To return to normal operation, the courtesy lamps will operate after the dome lamp switch or door ajar switch changes state. The glove box and switched reading lamps require that the ignition be turned to the on/acc position.

3.14 MEMORY SYSTEM

The memory system consists of power driver’s seat, power mirror, adjustable pedals and radio presets. The Memory Seat/Mirror/Adjustable Ped-

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GENERAL INFORMATION

als Module (MSMAPM) is located under the driver’s seat. It receives input from the following: driver’s manual 8-way seat switch, driver’s seat position sensors, PCI bus circuits, and the power mirror sensors. The module uses these inputs to perform the following functions: position the driver’s memory seat, both exterior mirrors (during recalls), both pedals, and send/receive the memory system information over the PCI bus.

The Memory Set Switch is wired to the Body Control Module (BCM). A button (either #1 or #2) pressed on the set switch causes the BCM to send a message to the MSMAPM which in turn will send a motion status message back to the BCM. If the message from the MSMAPM indicates no current motion, the BCM will send a recal message to the module. The MSMAPM will set the seat, exterior mirror, pedals, and radio to the presets for the indicated driver.

If any one of the memory controlled systems is inoperative from its manual switch, use the schematics and diagnostic information to correct the concern. This manual addresses the memory problems only and it is assumed there is not a basic component failure.

motor would be detected by the MSMAPM and the corresponding seat output would be deactivated. However, if the object obstructing the seat is removed, the seat will function normally again.

3.14.2 MEMORY MIRROR

The driver sideview mirror contains vertical and horizontal bi-directional drive positioning motors and position sensors. The MSMAPM provides a 5-volt reference on the signal circuit to each position sensor. The sensors share a common ground circuit. The MSMAPM monitors the position of the mirror motors by measuring the voltage on each signal circuit. When a memory position is set, the MSMAPM monitors and stores the position of the outside mirror. The MSMAPM adjusts the mirror to the appropriate positions when a memory recall message is received from the RKE or is requested from the memory set switch.

The power mirror switch during non-memory operation operates the mirror independently of the MSMAPM.

3.15 OVERHEAD CONSOLE

3.14.1 POWER SEAT

The memory power seat provides the driver with 2 position settings for the driver’s seat. Each power seat motor is connected to the MSMAPM with two motor drive circuits. Each circuit is switched between battery and ground. By being able to bidirectionally drive the circuits, the MSMAPM controls the movement of the motors based on input from the power seat switch or from the position sensors when performing a memory recall. Each motor contains a potentiometer to monitor the seat position. To monitor the position of the motor, the MSMAPM sends out a 5-volt reference on the sensor supply circuit. The sensor is grounded back to the module on a common ground circuit. Based on the position of the sensor, the MSMAPM monitors the voltage change through the sensor on a separate signal circuit.

The MSMAPM stores the input value of each of the four seat potentiometers in memory when the system requests a set. The driver can initiate a memory recall, using either the door mounted memory switch or the RKE transmitter (if the remote linked to memory feature is enabled via the EVIC). When initiated, the MSMAPM adjusts the four seat sensors (by using the motors) to match the memorized seat position data.

For safety, the memory seat recall is disabled by the MSMAPM when the vehicle is out of park position or if the speed is not zero. Any obstruction to seat movement over a 2-second delay will cause the seat to stop moving in which case a stalled

COMPASS/TEMPERATURE MODULE, COMPASS/MINI-TRIP COMPUTER or ELECTRONIC VEHICLE INFORMATION CENTER

The Compass/Temperature Module (CT), Compass/Mini-Trip Computer (CMTC) or Electronic Vehicle Information Center (EVIC) is located in the overhead console. The CT provides the vehicle operator with only outdoor temperature and the compass heading. The CMTC or EVIC supplements the standard vehicle instrumentation. The CMTC and EVIC use a vacuum fluorescent (VF) display to supply the vehicle operator with a compass heading, outdoor temperature, average fuel economy, distance to empty, trip odometer, elapsed ignition on time, distance to service, warning messages, and service messages.

The difference between a CMTC and an EVIC is that only the EVIC provides additional memory, feature programming, and warning messages. The EVIC is capable of displaying warning messages and memory system messages when the vehicle is equipped with memory systems. The EVIC also provides the interface to enable and disable vehicle programmable features when the vehicle is equipped with certain features.

If equipped, the EVIC is also available with an integrated Universal Garage Door Opener (UGDO) known as HomeLinkt. The EVIC may also be equipped with up to 4 power door switches: ON/ OFF, Left Sliding Door, Right Sliding Door, and Liftgate.

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The CT function buttons are labeled C/T and US/M. The CMTC function buttons are labeled US/M, C/T, RESET, and STEP. The EVIC function buttons are labeled C/T, RESET, STEP, and MENU. The three UGDO buttons are labeled with dots to indicate the channel number.

The BCM supplies most of the information displayed by the CMTC/EVIC. Display information, except for the internal compass function, is received over the PCI bus. The FCM supplies the ambient temperature sensor information via the PCI bus. The CMTC/EVIC sends and receives data over the PCI bus, communicating with the BCM, PCM, FCM, and the Instrument Cluster. Tire Pressure Monitoring System information is received from the SKREEM via PCI bus information. The tire pressure sensors are mounted to the vehicle wheels. For complete information, refer to the Tire Pressure Monitoring System section in this publication.

3.15.1 VEHICLE INFORMATION DISPLAY

The CMTC/EVIC provides the following functions:

• Compass direction

• Outside temperature

• Elapsed ignition on time

• Distance to empty

• Average fuel economy

• Trip odometer

• Distance to service

The EVIC will also display the following driver alert messages:

• TURN SIGNAL ON (with vehicle graphic)

• PERFORM SERVICE

• DOOR OPEN (individual or multiple doors, with

graphic)

• LOW TIRE PRESSURE (when equipped)

• ADJUSTABLE PEDAL DISABLED CRUISE

ENGAGED (when equipped)

• ADJUSTABLE PEDAL DISABLED VEHICLE

IN REVERSE (when equipped)

An audible chime or chimes will accompany any displayed warning messages. Chime requests with an OPEN message are dependent upon vehicle speed.

The CT/CMTC/EVIC will not display information for any of the screens for which it did not receive the proper PCI bus data. Refer to the symptom list in the Overhead Console section for problems related to the CT/CMTC/EVIC.

The CMTC/EVIC receives the following messages from the Body Control Module (BCM):

• Verification of US/Metric status

• VF display dimming brightness and exterior

lamp status

• Elapsed Ignition On Time data

• Average Fuel Economy

• Distance to Empty

• Distance to service

• Driver warning messages

The CT/CMTC/EVIC receives the following mes-

sages from the Front Control Module (FCM):

• Outside Temperature

The CMTC/EVIC receives the following messages

from the Powertrain Control Module (PCM):

• Trip Odometer data

• Vehicle Speed

The EVIC receives the following messages from

the Adjustable Pedal System Module (APS):

• APS status warnings

The CT/CMTC/EVIC receives the following messages from the Sentry Key Remote Electronic Entry Module (SKREEM):

• Tire Pressure information

The CMTC/EVIC transmits the following messages to the BCM:

• Status Request: Beep, Reset, US/M Toggle

• Current Display

STEP BUTTON

The STEP Button can be used in one of the following three ways:

1. To sequentially select one of seven displays or

blank display in the following order:

• Average Fuel Economy

• Distance to Empty

• Trip Odometer

• Time Elapsed

• Distance to Service Message

• Off (Blank)

2. To set the magnetic variance zone when VARI-

ANCE=X(X=1-15)isindicated in the VF Display.

3. To select the displayed programmable feature

setting. (When equipped.)

MENU BUTTON (EVIC only)

For complete information of the programmable features and memory messages, refer to the RS/RG Service Manual.

Use the MENU button to sequentially step the EVIC through the programmable features.

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RESET BUTTON

The RESET Button has two different functions:

1. To clear the trip functions that may be reset

2. To enter and exit the diagnostic mode Pressing the RESET button once will clear the

trip function that is currently being displayed (except Distance to Service) and the CMTC/EVIC will send a PCI bus beep request to the BCM. If the RESET button is pressed again within 3 seconds, the CMTC/EVIC will resetALL of the trip functions and an additional beep request is sent to the BCM. The trip functions that may be reset are:

• Average Fuel Economy

• Trip Odometer

• Elapsed Time

A reset will only occur if one of the trip functions

that may be reset is currently being displayed. Pressing the RESET button for more than three (3) seconds resets the Distance to Service function while the Distance to Service message is being displayed. The CMTC/EVIC module will send a beep request to the BCM.

Simultaneously pressing the RESET button and

the STEP button while turning the ignition from Off to On will enter the CMTC/EVIC into the self-diagnostic mode.

COMPASS/TEMPERATURE (C/T) BUTTON

Actuating the Compass/Temperature Button

(C/T) will cause the CMTC/EVIC to display the compass and temperature information. This function will operate from another traveler display or from the programmable feature mode.

3.15.2 TRAVELER DISPLAY FUNCTIONS

Using the STEP button will change the CMTC/

EVIC between modes of operation and display the appropriate information according to data received from the PCI Bus.

COMPASS/TEMPERATURE

The CMTC/EVIC simultaneously displays the

compass reading and the outside temperature. Outside temperature information is received via the PCI bus from the FCM.

The CMTC/EVIC module internally senses and

calculates the compass direction.

COMPASS OPERATION - ALL

Upon ignition on, if the calibration information

stored in the CMTC memory is within the normal range, the CMTC will perform in slow Auto-Cal mode. In slow Auto-Cal mode, the CMTC continuously compensates for the slowly changing magnetic field of the vehicle. The compass module detects changes in the vehicle magnetism and

makes appropriate internal corrections to ensure proper displayed direction.

However, if the calibration information stored in the CMTC memory is not within the normal range at ignition on, the CMTC will enter fast Auto-Cal. CAL is displayed along with the temperature.

Auto activation of the fast Auto-Cal mode will also occur when the CMTC is subjected to high magnetic field strength levels, which cause all compass readings to be erroneous for a continuous period of five (5) minutes. During fast Auto-Cal, CAL will be displayed along with the temperature.

FastAuto-Cal can also be performed manually, by pressing and holding the RESET button for 10 seconds during the Compass/Temperature display mode.

3.15.3 SETTING MAGNETIC ZONE

VARIANCE

Variance is the difference between magnetic North and geographic North. For proper compass function, the correct variance zone must be set. Refer to the Zone Variancemap for the correct zone. Follow these steps to check or change the variance zone:

CMTC/EVIC:

• The ignition switch must be in the On position

and the CMTC/EVIC display must not be blank.

• If the compass/temperature data is not currently

being displayed, momentarily press and release

the C/T button to display compass/temp informa-

tion.

• Pressand hold the RESET button (approximately

5 seconds) until VARIANCE = XX is displayed.

The CMTC/EVIC will display the variance zone

stored in memory and the word VARIANCE.

• Use the RESET button to select the proper vari-

ance zone number, 1 through 15.

• After selecting the proper zone number, momen-

tarily press and release the RESET button. The

variance zone is then stored in the memory and

the CMTC/EVIC returns to normal operation.

CT:

• The ignition switch must be in the On position

and the C/T display must not be blank.

• Press and hold the C/T and US/M buttons (ap-

proximately 5 seconds) until VARIANCE = XX is

displayed. The C/T will display the variance zone

stored in memory and the word VARIANCE.

• Use the US/M button to select the proper vari-

ance zone number, 1 through 15.

• After selecting the proper zone number, momen-

tarily press and release the C/T button. The

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variance zone is then stored in the memory and the C/T returns to normal operation..

3.15.4 COMPASS CALIBRATION

The compass module has 2 types of autocalibration; slow-cal and fast-cal. Slow-cal ensures that during normal vehicle operation the compass performs auto-calibration functions to keep the compass sensors in their proper operating range. Whenever the ignition is On and the CT/CMTC/ EVIC receives PCI bus data indicating that engine RPM is greater than zero, auto-calibration is performed continuously.

If the calibration information stored in the compass module memory is not within the normal range after a power-up cycle, the compass will display CAL. The CT/CMTC/EVIC will enter into the fast-cal mode until calibration is complete.

To enter the compass into Manual Calibration mode, perform the following steps:

• Drive the vehicle to an area away from any large

metal objects or overhead power lines.

• Ensure that the proper variance zone is selected.

See 9Setting Magnetic Zone Variance.9

• The ignition switch must be in the On position

and the CMTC/EVIC display must not be blank.

• Press the C/T button to view the Compass/

Temperature display.

• Pressand hold the RESET button (approximately

10 seconds) until CAL is displayed, then release the button.

• Drive slowly, less than 5 MPH (8KPH) in at least

1 complete 360-degree circle.

• CAL will remain illuminated to alert the driver

that the compass is in the calibration mode.

• After calibration is complete, CAL will turn off.

NOTE: For C/T Manual Calibration, perform the same procedure as above, but press and hold the C/T and US/M buttons until CAL is displayed.

If the compass appears blank, unable to be calibrated, or the compass displays false indications,

the vehicle must be demagnetized. Refer to Compass Demagnetizing Procedure in the Service Manual.

3.15.5 SELF-CHECK DIAGNOSTICS

The CT/CMTC/EVIC is capable of performing a diagnostic self check on its internal functions. Diagnostics may be performed using a DRBIIIt or by using the following procedure:

1. For CMTC/EVIC: With the ignition switch in the

OFF position, depress and hold the RESET and the STEP buttons. For CT: With the ignition switch in the OFF position, depress and hold the C/T and the US/M buttons.

2. Turn the ignition switch to the ON position.

3. Continue to hold both buttons until the software

versions are displayed, then release the buttons.

4. All of the VFD segments will illuminate for 2-4

seconds. Check for segments that do not illuminate or illuminate all the time.

5. When the self-check is complete the EVIC will

display one of the following messages:

• PASS SELF TEST

• FAILED SELF TEST

• NOT RECEIVING J1850 MESSAGE

When the self-check is complete the CT/CMTC will display one of the following messages:

• PASS

• FAIL

• BUS

1. To exit the self-check mode:

For the CMTC/EVIC: Depress the STEP or RESET button, or cycle the ignition switch and the CMTC/EVIC will return to normal operation.

For the C/T: Depress the C/T or US/M button, or cycle the ignition switch and the CT will return to normal operation.

If a Communication fault is displayed, refer to the symptom list. If a FAIL or FAILED is displayed, the CT/CMTC/EVIC must be replaced.

3.15.6 AMBIENT TEMPERATURE SENSOR

The ambient air temperature is monitored by the FCM and displayed by the CT/CMTC/EVIC. The FCM receives a hardwire input from the ambient temperature sensor (ATS).

The ATS is a variable resistor that operates on a 5-volt reference signal circuit hardwired from the FCM. The resistance in the ATS changes as the outside temperature rises or falls. The FCM senses the change in reference voltage through the ATS resistor. Based on the resistance of the ATS, the FCM is programmed to correspond to a specific

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temperature. The FCM stores and filters the ambient temperature data and transmits this data to the CMTC/EVIC via the PCI Bus. The ATS cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.

3.15.7 AMBIENT TEMPERATURE SENSOR FAULT CODES

The outside temperature function is supported by the ambient temperature sensor (ATS), a signal and ground circuit hardwired to the FCM, and the CMTC/EVIC display.

If the ATS sense circuit is shorted to ground, the temp display will be 54°C (130°F) to indicate a SHORT circuit condition.

If the ATS sense circuit is open, the temp display will be -40°C (-40°F) to indicate an OPEN circuit condition.

If there is an OPEN or SHORT circuit condition, it must be repaired before the CMTC/EVIC VFD can be tested.

The ATS is supported by the FCM. Ambient Temperature Sensor DTCs will be recorded in the FCM. The ATScan be diagnosed using the following Sensor Test. Test the ATS circuits using the diagnostics in the Body Diagnostic Procedures Manual. If the CMTC/EVIC passes the self-test, and the ATS, the circuits, and PCI bus communications are confirmed to be OK, but the CMTC/EVIC temperature display is inoperative or incorrect, replace the FCM.

AMBIENT TEMPERATURE SENSOR TEST

1. Turn the ignition OFF.

2. Disconnect the ATS harness connector.

3. Measure the resistance of the ATS using the

following min/max values:

• 0° C (32° F) Sensor Resistance = 29.33 - 35.99

Kilohms

• 10° C (50° F) Sensor Resistance = 17.99 - 21.81

Kilohms

• 20° C (68° F) Sensor Resistance = 11.37 - 13.61

Kilohms

• 25° C (77° F) Sensor Resistance = 9.12 - 10.86

Kilohms

• 30° C (86° F) Sensor Resistance = 7.37 - 8.75

Kilohms

• 40° C (104° F) Sensor Resistance = 4.90 - 5.75

Kilohms

The sensor resistance should read between these min/max values. If the resistance values are not OK, replace the Sensor.

3.15.8 HOMELINKT UNIVERSAL TRANSMITTER

If equipped, the HomeLinkt Universal Transmitter is integrated into the overhead console. For added security it will operate home security systems that use coded signals known generically as Rolling Codes. The overhead console display provides visual feedback to the driver,indicating which HomeLinkt transmitter channel button is being pressed. The HomeLinkt can learn and store up to three separate transmitter radio frequency codes to operate garage door openers, security gates, and security lighting. The HomeLinkt buttons are marked with one, two, or three dots. For complete information, refer to Universal Transmitter in the Service Manual or the Owner’s Manual.

3.15.9 TIRE PRESSURE MONITORING

SYSTEM (TPMS)

If equipped with the Tire Pressure Monitoring System (TPMS), each of the vehicles four wheels (spare wheel optional) will have a valve stem with a pressure sensor and radio transmitter built in. Signals from the tire pressure Sensor/Transmitter are received and interpreted by the Sentry Key Remote Entry Module (SKREEM). Using the DRBIIIt, go to ANTI-THEFT for the SKREEM data.

A Sensor/Transmitter in a mounted wheel will broadcast an RF frequency indicating its pressure once per minute when the vehicle is in drive mode. To activate the Sensor/Transmitter operation, the required SKREEM speed is 13 mph (20 km/h). Each Sensor/Transmittersbroadcast is uniquely coded so that the SKREEM can monitor the states of each Sensor/Transmitter on the vehicle. The SKREEM TPMS does not use a magnet to relearn, it automatically learns while driving after a SKREEM or a Sensor/Transmitter has been replaced.

3.15.9.1 TRAINING THE SKREEM

If a Sensor/Transmitter is replaced, the vehicle has to be parked for at least 15 minutes for the system to be ready to learn the new Sensor/ Transmitter ID code. The vehicle then must be driven for a minimum of five minutes with a minimum continuous speed above 13 mph (20 km/h). The system will learn the new Sensor/Transmitter and clear the DTC’s automatically. The Sensor/ Transmitters are programmed at the assembly plant in this clockwise orientation:

Sensor/Transmitter 1 = Left Front

Sensor/Transmitter 2 = Right Front

Sensor/Transmitter 3 = Right Rear

Sensor/Transmitter 4 = Left Rear

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NOTE:

1. If one or all Sensor/Transmitters cannot be trained, check for and avoid RF interference.

2. If one Sensor/Transmitter still cannot be trained, replace it and retry.

3. If all Sensor/Transmitters still fail to train, replace the SKREEM.

3.15.9.2 PRESSURE THRESHOLDS

The SKREEM will monitor the tire pressure signals from the Sensor/Transmitters and determine if any tire has gone below the low-pressure thresholds. Refer to the table below:

LOW TIRE PRESSURE THRESHOLDS

SYSTEM STATUS

INDICATOR

ON 193 kPa (28 PSI)

OFF 227 kPa (33 PSI)

TIRE PRESSURE

3.15.9.3 ACTIVE FAULT AND SYSTEM

ALERTS

An active fault will be triggered when a system failure has been detected. When this occurs, the Instrument Cluster will illuminate the TPMS indicator and the SKREEM will store the fault code. An alert will be triggered when a tire pressure has gone below the set threshold pressure. The SKREEM will request a message to be displayed on the EVIC (if equipped). Only when a tire pressure has gone below the set threshold pressure will the SKREEM illuminate the TPMS indicator and request the EVIC message (if equipped). This action will be displayed as long as the fault/alert condition is active.

3.16 PARK ASSIST SYSTEM

The Park Assist System display activates an audible tone that changes from intermittent to continuous as the final two Light Emitting Diodes (LED’s) are illuminated on one side or both sides of the display.

The system detection length from the rear of the vehicle is 0.3 meters to 1.5 meters. This area extends around the rear side of the vehicle. The system detection height from the ground is 0.2 meters to about 1.5 meters. The radio mutes when the system activates its audible tone.

When the driver selects Reverse or Neutral the system scans for objects behind the vehicle using four sensors located in the rear bumper.Objects can be detected from up to 1.5 meters. A warning

display above the rear window provides both visible and audible warnings indicating the range of the object.

The system is active only when the vehicle is in reverse or neutral for vehicle speeds less than 16 Km/h (10 mph). If the vehicles Parking/Emergency Brake is applied, the system is deactivated.

The display contains two sets of yellow and red Light Emitting Diode’s (LED’s) that the driver can see in the rear view mirror. Each side of the vehicle has its own warning LED’s. The system provides a visual warning by illuminating one or more yellow LED’s as the vehicle gets closer to the object. As the vehicle continues to approaches the object, one red LED is illuminated and the system emits a series of short beeps. The tone will remain constant and both red LED’s are illuminated once the vehicle is within 12 inches (30.5 cm) of the object.

The system can be turned ON or OFF through the Electronic VehicleInformation Center (EVIC) when the vehicle is in PARK. If the park assist system is turned OFF, a single chime will sound and the EVIC will display the following message ‘‘REAR PARK ASSIST OFF’’, when the vehicle is in reverse.

• Ensure that the rear bumper is free of dirt and

debris to keep the system operating properly.

• Jackhammers, large trucks, and other vibrations

could affect the performance of the system.

• Ensure that the parking brake is not applied.

If ‘‘Service Park Assist System’’ appears in the EVIC after making sure the rear bumper is clean, proceed to diagnose the system using a scan tool and the appropriate diagnostic information.

3.17 POWER DOOR LOCK SYSTEM

When the BCM receives input for a lock request from a door lock switch, RKE or cylinder lock switch (only with VTSS), it will turn the lock drivers on for a specified time of 375 msec. If the request is there beyond 375 msec, the BCM considers the door lock signal stuck. Once a door lock or unlock signal is stuck for longer than 10 seconds, the BCM will set a trouble code and the signal input is ignored until the stuck condition disappears. The door lock switches provide a variable amount of resistance thereby dropping the voltage of the multiplexed (MUX) circuit and the BCM will respond to that command.

3.17.1 DOOR LOCK INHIBIT

When the key is in the ignition and in any position and either front door is open, the door lock switches LOCK functions are disabled. The UNLOCK functions are still functional. This protects against locking the vehicle with the keys still in the ignition. The RKE key fob will still lock the doors as

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usual. After the key is removed from the ignition or the doors are closed, the power door locks will operate normally.

3.17.2 AUTOMATIC DOOR LOCKS

This feature can be enabled or disabled by using either the DRBIIIt or the customer programming method. When enabled all the doors will lock when the vehicle reaches a speed greater than 18 MPH (29 KMH) and all the doors are closed. If a door is opened and the vehicle slows to below 18 MPH (29 KMH), the door locks will operate again once all doors are closed and the speed is above 18 MPH (29 KMH).

3.17.3 REMOTE KEYLESS ENTRY (RKE)

The RKE transmitter uses radio frequency signals to communicate with the SKREEM module. The SKREEM is on the PCI bus. When the operator presses a button on the transmitter, it sends a specific request to the SKREEM. In turn the SKREEM sends the appropriate request over the PCI Bus to the:

• Body Control Module (BCM) to control the door

lock and unlock functions, the arming and dis-

arming of the Vehicle Theft Security System (if

equipped), and the activation of illuminated en-

try.

• Integrated Power Module (IPM) to activate the

park lamps, the headlamps, and the horn for

horn chirp.

• Power Liftgate Module (PLGM) to control the

liftgate operation (double press).

• Power Sliding Door Module (PSDM) to control

the sliding door operation (double press).

After pressing the lock button on the RKE transmitter, all of the door locks will lock, the illuminated entry will turn off (providing all doors are closed), and the vehicle theft security system (if equipped) will arm. After pressing the unlock button, on the RKE transmitter, one time, the driver door lock will unlock, the illuminated entry will turn on the courtesy lamps, and the vehicle theft security system (if equipped) will disarm. After pressing the unlock button a second time, the remaining door locks will unlock. The EVIC or the DRBIIIt can reprogram this feature to unlock all of the door locks with one press of the unlock button. If the vehicle is equipped with the memory system, the memory message will identify which transmitter (1 or 2) sent the signal.

The SKREEM is capable of retaining up to 8 individual access codes (8 transmitters). If the PRNDL is in any position except park, the SKREEM will disable the RKE. The 3 or 6 button transmitter uses 1-CR2032 battery. The minimum

battery life is approximately 5 years based on 20 transmissions a day at 84°F (25°C). Use the DRBIIIt or the Miller Tool 9001 RF Detector to test the RKE transmitter. Use the DRBIIIt or the customer programming method to program the RKE system. However, the SKREEM will only allow RKE programming when the ignition is in the on position, the PRNDL is in park position, and the VTSS (if equipped) is disarmed.

3.17.3.1 PANIC FUNCTION

Pressing the panic button on the RKE transmitter will cause the headlamp relay, the park lamp relay, and the horn relay to pulsate, which in turn will cause the exterior lamps to flash and the horn to sound intermittently. It will also cause the courtesy lamp relay to actuate, turning on the courtesy lamps. Pressing the panic button again stops the headlamps and the park lamps from flashing and the horn from sounding. However, the courtesy lamps will remain on until either the BCM times out lamp operation or until the ignition is turned on. The panic feature operates for three minutes at a time, unless the operator cancels it, or the ignition is turned on.

Actuating the headlamp, horn, park lamps, and courtesy lamps with the DRBIIIt will verify if the circuits and the Integrated Power Module are OK. If the panic feature is still inoperable with all transmitters, it will be necessary to replace the SKREEM. If the function is inoperable with just one transmitter, then replace only that transmitter.

3.17.3.2 ROLLING CODE

The rolling code feature changes part of the transmitter message each time that it is used. The transmitter message and the receiver message increment together. Under certain conditions with a rolling code system (pressing a button on the RKE transmitter over 255 times outside the receiver range, battery replacement, etc.), the receiver and transmitter can fall out of synchronization. Note: The lock function works from the RKE transmitter even in an out of synchronization condition and therefore it could be verified by pressing the LOCK button on the RKE integrated key. To resynchronize, press and release the UNLOCK button on the RKE transmitter repeatedly (it may take up to eight cycles) while listening carefully for the power door locks in the vehicle to cycle, indicating that resynchronization has occurred.

3.17.3.3 PROGRAMMABLE DOOR LOCK

FEATURES

• The RKE can be changed to unlock all doors with

one press

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• The Automatic Door Locks can be enabled/

disabled

• Auto Unlock on Exit can be enabled/disabled

• RKE horn chirp on lock can be enabled/disabled

• RKE optical chirp (turn signal lamps) can be

enabled/disabled

• Program a new RKE transmitter.

• RKE linked to memory (if equipped with memory

system) enabled/disabled (DRBIIIt only). Allows memory to be operable only from the driver door switch.

3.18 POWER FOLDING MIRRORS

The power folding mirrors are powered to two positions: folded and unfolded. The driver may choose fold or unfold with a switch that is located on the right side of the steering column. The folding mirror switch grounds a sense wire that comes from the Body Control Module when it is placed in the fold position. The mirrors will move to the position designated by the switch whether the ignition switch is the On or Off position and both front doors are closed. When the Power Folding Mirror switch is left in the fold position during a vehicle exit the mirrors will automatically unfold then refold after both front doors are closed. This is to prevent mirror contact with either front door when opened. When opening either front door, the Body Control Module will unfold the mirrors in the following manner depending on which front door is opened. If the driver door is opened, only the driver side mirror will unfold. If the passenger door is opened, both mirrors will unfold. The passenger mirror is prevented from unfolding when the driver’s door is opened by the Passenger Folding Mirror Relay, which opens the driver circuit to the passenger side mirror.

3.19 POWER LIFTGATE SYSTEM

3.19.1 POWER LIFTGATE

The power liftgate (PLG) system is activated through the use of the following: remote keyless entry (RKE), overhead console switches, outside liftgate handle switch or the DRBIIIt. These inputs are hardwired to the body control module (BCM) and can be monitored with a diagnostic tool. The BCM will send the message via PCI bus to the power liftgate module (PLGM). The liftgate must be in the full open or full closed position to operate. Once the BCM sends a button activation message to the PLGM, the module shall read all inputs, outputs and vehicle conditions to determine whether it shall open, close or inhibit the PLG operation. Once

the PLGM determines the vehicle conditions are safe for operation, the PLGM will initiate a chime for 2 seconds prior to the liftgate activation and 2 seconds during the open or close cycle.

During an opening or closing cycle, the PLGM can detect an obstacle present should it meet sufficient resistance by the hall effect sensors (integrated in the gear motor assembly GMA).

During an open cycle, multiple liftgate activations (RKE, overhead console, B pillar) are ignored until the liftgate reaches the full open position. However, during a close cycle, a 2nd liftgate activation (RKE, overhead console, B pillar) will reverse the liftgate to the full open position.

If the engine is cranked during a power open/close the PLG will pause then resume after engine cranking. In addition, if the vehicle is placed in gear during an open cycle, the PLG shall reverse direction and begin closing. If the vehicle is placed in gear during a closing cycle, the PLG shall continue closing until fully closed. If the outside handle is activated during an open cycle, the PLG will become a full manual liftgate. If the outside handle is activated during a close cycle, the PLG shall reverse direction of travel to the full open position.

3.19.2 DIAGNOSTIC FEATURES

The PLG can be flashed on vehicle via PCI bus with a DRBIIIt diagnostic tool. The DRBIIIt can read all inputs, actuate all outputs, read module information, and read diagnostic trouble codes.As a reminder, some DTC’s can be set during normal PLG operation.

3.19.3 SYSTEM INHIBITORS

1. Battery voltage too high or too low (above 16V,

below 9.5V)

2. Vehicle in gear

3. Vehicle speed > 0 mph/km/h

4. Outside temperature too high, above 143°F

(62°C) or too low, below -12°F (-24°C).

5. O/H console lockout will inhibit the B pillar

switches only.

6. Liftgate locked will inhibit all interior switches

from opening (overhead console). A locked liftgate can be power closed.

7. Pinch Sensor switch stuck shall inhibit the

power close feature.

3.20 POWER SLIDING DOOR SYSTEM

3.20.1 POWER SLIDING DOOR

The Power Sliding Door (PSD) system is activated through the use of the following: Remote Keyless Entry (RKE), overhead console switches, B

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pillar switches or the DRBIIIt. These inputs are hardwired to the body control module (BCM) and can be monitored with a diagnostic tool. The BCM will send the message via PCI bus to the power sliding door module (PSDM). The sliding door must be in the full open or full closed position to operate. Once the BCM sends a button activation message to the PSDM, the module shall read all inputs, outputs and vehicle conditions to determine whether it shall open, close or inhibit the PSD operation. During an opening or closing cycle, the PSDM can detect an obstacle present should it meet sufficient resistance by the hall effect sensors (integrated in the drive motor).

During an open cycle, multiple door activations (RKE, overhead console, B pillar) are ignored until the door reaches the full open position. However, during a close cycle, a 2nd door activation (RKE, overhead console, B pillar) will reverse the door to the full open position.

If the engine is cranked during a power open/close the PSD will pause then resume after engine cranking. In addition, if the vehicle is placed in gear during an open cycle, the PSD shall reverse direction and begin closing. If the vehicle is placed in gear during a closing cycle, the PSD shall continue closing until fully closed.

If the inside or outside handle is activated during an open or close cycle, the PSD will become a full manual sliding door. The child lockout is mechanical only and has no effect on the B-pillar switch as it did in previous models.

There is only one part number for the power sliding door module (PSDM). The driver sliding door harness has an additional ground circuit which will identify it as the driver side. This eliminates the need for a left and a right side module.

3.20.2 DIAGNOSTIC FEATURES

The PSDM can be flashed on vehicle via PCI bus with a DRBIIIt diagnostic tool. The DRBIIIt can read all inputs, actuate all outputs, read module information, and read diagnostic trouble codes.As a reminder, some DTC’s can be set during normal PSD operation.

3.20.3 SYSTEM INHIBITORS

1. Battery voltage too high or too low (above 16V,

below 9.5V)

2. Vehicle in gear

3. Vehicle speed > 0 mph/km/h

4. O/H console lockout will inhibit the B pillar

switches

5. Doors locked will inhibit all interior switches

from opening (Overhead Console, B Pillar). A locked sliding door can be power closed.

3.21 REAR WINDOW DEFOG/HEATED MIRROR/FRONT WIPER DE-ICE (IF EQUIPPED)

The defroster button located on the HVAC control controls the rear window defogger,heated side view mirrors and front wiper de-icer grid. In addition the front wiper de-ice function is turned on when front defog/defrost mode is selected.

When the defroster button is pushed, the HVAC control sends a bus message over the PCI bus to the Front Control Module (FCM) which controls the Rear Window Defogger relay. The defroster LED will illuminate when the defroster function is on. The defroster will function for 10 minutes or can be cycled off sooner by pressing the defroster button again. The front wiper de-icer grid receives its 12 volts from the accessory relay through fuse 11 and the HVAC control module supplies the grid ground.

3.22 TELECOMMUNICATIONS

3.22.1 HANDS FREE PHONE

OVERVIEW

The vehicle telecommunications system consists of a Hands Free Module, Rear View Mirror, and a Blue-tooth Hands Free Profile enabled cell phone. The system allows vehicle occupants to use voice recognition technology to make, receive and screen phone calls without physically handling a cell phone. The system has a programmable phone book that can prevent the vehicle operator from becoming distracted searching for a specific number. Seven different wireless phones can be programmed to operate each individual system. Each of the seven phones is given a rank of priority when programmed.

OPERATION

Incoming phone messages are transmitted to the vehicle occupants through the vehicles audio system when the ignition is on and the wireless phone is on. Upon receiving the signal from an incoming phone call, the vehicle audio system will fade out the current CD/DVD or radio output. The vehicle occupants are then directed to accept or reject the call. Outgoing audio messages are received through the microphone located in the rearview mirror then transmitted via hardwire to the Hands Free Module and finally transmitted through the wireless phone. Volume of the voice prompts and incoming conversation is controlled using the vehicles’ radio audio controls and steering wheel controls if equipped. The rear view mirror contains a Phone Switch, Voice Recognition Switch and a microphone. The rear view mirror transmits these inputs via hardwired circuits to the Hands Free Module.

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3.23 VEHICLE THEFT SECURITY SYSTEM

The Vehicle Theft Security System (VTSS) is part of the Body Control Module (BCM). The BCM monitors the vehicle doors, liftgate (export only), hood (export only), and the ignition for unauthorized operation. The alarm activates by sounding the horn, flashing the headlamps and the VTSS indicator lamp. The VTSS does not prevent engine operation, this is done with the Sentry Key Remote Entry Module (SKREEM). The VTSS indicator lamp will flash for approximately 15 seconds during the arming process. If there is no interruption during the arming process, upon completion the VTSS indicator lamp will flash at a slower rate. When the BCM receives an input to trigger the alarm, the BCM will control the outputs of the headlamps, horn, and VTSS lamp for approximately 15 minutes. Arming (Active and Passive)

Active arming occurs when the ignition key is removed, the RKE transmitter or door key cylinders are used to lock the vehicle doors, whether the doors are open or closed. The arming process is complete only after all doors are closed.

Passive arming occurs when the ignition key is removed, the driver door is opened, and the doors are locked with the power door lock switch, and the door is closed. Disarming (Active and Passive)

Active disarming occurs when the RKE transmitter is used to unlock the vehicle doors. This disarming will also halt the alarm once it has been activated.

Passive disarming occurs upon normal vehicle entry (unlocking driver door with the key) or turning the ignition switch on with a valid ignition key. This disarming will also halt the alarm once it has been activated. Tamper Alert

The VTSS tamper alert will sound the horn three times upon disarming after an initial alarming has occurred to indicate a tamper condition has occurred. Manual Override

The system will not arm if the doors are locked using the manual lock control or if the locks are actuated by an inside occupant after the doors are closed. Diagnosis

For complaints about the Vehicle Theft Alarm triggering on its own, use the DRBIIIt and read the Last VTSS Cause status.

3.23.1 THATCHAM ALARM SYSTEM (EXPORT ONLY)

The Thatcham Alarm Module monitors the vehicle doors, liftgate, hood and the interior of the vehicle for unauthorized operation. The vehicle doors, liftgate, and hood use ajar switches as inputs to the BCM to indicate their current status. The interior of the vehicle is secured by the use of Intrusion Sensors. The Intrusion Sensors are used as inputs to the Thatcham Alarm Module to report any motion in the interior of the vehicle. The alarm activates by sounding the siren, flashing the hazard lamps, and the VTSS Indicator Lamp.

Arming

Before arming, all doors, liftgate, and the hood must be completely closed. The system can only be armed by locking the doors with the RKE transmitter.

Disarming

To disarm the alarm system, use the RKE transmitter or turn the ignition on with a valid ignition key. This will also halt the alarm once it has been activated.

NOTE: A powertrain control module from a vehicle equipped with a vehicle theft security system cannot be used in a vehicle that is not equipped with a vehicle theft security system. If the VTSS indicator lamp comes on after ignition on and stays on, the PCI Bus Communication with the powertrain control module has possibly been lost.

3.24 WIPER SYSTEM

3.24.1 FRONT WIPER

The front wiper/washer system consists of the following features: lo-hi-speed, mist wipers, intermittent wipers and wipe after wash. The front wiper system is only active when the ignition switch is in the RUN/ACC position. The vehicle operator selects the front wiper function using the front wiper switch (a resistive multiplexed stalk switch) which is integral to the Multi-Function Switch. The front wiper switch is hardwired to the Body Control Module (BCM). Upon receiving a wiper switch signal, the BCM sends a PCI Bus message to the Front Control Module (FCM). The FCM controls the ON/ OFF relay, the HIGH/LOW relay and the front and rear washer pump motors.

The Wiper system utilizes the BCM to control the on/off and hi/low relays for the low and hi speed wiper functions, intermittent wiper delay as the switch position changes, pulse wipe, wipe after wash mode and wiper motor functions. The BCM

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GENERAL INFORMATION

uses the vehicle speed input to double the usual delay time below 10 MPH (16 KPH).

3.24.2 SPEED SENSITIVE INTERMITTENT WIPE MODE

There are 5 individual delay time settings with a minimum delay of 1.7 seconds to a maximum of 18.4 seconds. When the vehicle speed is under 10 MPH (16 KPH), the delay time is doubled, providing a delay range of 3.4 seconds to 36.8 seconds.

3.24.3 PULSE WIPE

When the wiper is in the off position and the driver presses the wash button for more than .062 seconds, but less than .5 seconds, 2 wipe cycles in low speed mode will be provided.

3.24.4 PARK AFTER IGNITION OFF

Because the wiper relays are powered from the battery, the BCM can run the wipers to park after the ignition is turned off.

3.24.5 WIPE AFTER WASH

When the driver presses the wash button for over .5 seconds and releases it, the wiper will continue to run for 2 additional wipe cycles.

3.24.6 REAR WIPER

The rear wiper/washer system consists of the following features: mist wipers, intermittent wipers and wipe after wash. The rear wiper system is only active when the ignition switch is in the RUN/ACC position. The vehicle operator selects the rear wiper function using one of the three buttons on the dash mounted rear wiper switch. The rear wiper switch is hardwired to the Body Control Module (BCM). Upon receiving a wiper switch signal, the BCM provides 12 volts to the rear wiper motor. Rear washer occurs when the BCM receives a rear washer switch ON input. The BCM sends a PCI Bus message to the FCM requesting rear washer on. The FCM activates the rear washer by providing a ground for the rear washer motor.

3.24.8 WIPE AFTER WASH

When the driver presses the wash button for over

1.5 seconds and releases it, the wiper will continue to run for 2 additional wipe cycles.

3.25 USING THE DRBIIIT

Refer to the DRBIIIt user guide for instructions and assistance with reading trouble codes, erasing trouble codes, and other DRBIIIt functions.

3.26 DRBIIIT ERROR MESSAGES

Under normal operation, the DRBIIIt will display one of only two error messages: user-requested WARM Boot or User-Requested COLD Boot. If the DRBIIIt should display any other error message, record the entire display and call the STAR Center. This is a sample of such an error message display:

ver:2.14 date: 26 Jul93 file: key_iff.cc date: Jul26 1993 line: 548 err: 0xi User-Requested COLD Boot

Press MORE to switch between this display and the application screen. Press F4 when done noting information.

3.27 DRBIIIT DOES NOT POWER UP

(BLANK SCREEN)

If the LED’s do not light or no sound is emitted at start up, check for loose cable connections or a bad cable. Check the vehicle battery voltage (data link connector cavity 16). A minimum of 11 volts is required to adequately power the DRBIIIt. Check for proper grounds at DLC cavities 4 and 5.

If all connections are proper between the DRBIIIt and the vehicle or other devices, and the vehicle battery is fully charged, an inoperative DRBIIIt may be the result or a faulty cable or vehicle wiring.

3.24.7 SPEED SENSITIVE INTERMITTENT WIPE MODE

The delay setting of the rear wiper system is based solely on the vehicle speed. The delay time is defined as the amount of time from the start of a wipe to the beginning of the next wipe. The rear wiper system delay time is based on the following:

7.75 - (MPH x .05) = Seconds delay

Examples:

At zero (0) MPH the delay is 7.75 seconds.

At 100 MPH the delay is 2.75 seconds.

3.28 DISPLAY IS NOT VISIBLE

Low temperatures will affect the visibility of the display. Adjust the contrast to compensate for this condition.

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GENERAL INFORMATION

4.0 DISCLAIMERS, SAFETY, WARNINGS

4.1 DISCLAIMERS

When diagnosing a body system problem, it is important to follow approved procedures where applicable. These procedures can be found in this General Information Section or in the service manual procedures. Following these procedures is very important to safety of individuals performing diagnostic tests.

4.2.2 VEHICLE PREPARATION FOR

TESTING

Make sure the vehicle being tested has a fully charged battery. If it does not, false diagnostic codes or error messages may occur.

4.2.3 SERVICING SUB-ASSEMBLIES

Some components of the body system are intended to be serviced as an assembly only. Attempting to remove or repair certain system subcomponents may result in personal injury and/or improper system operation. Only those components with approved repair and installation procedures in the service manual should be serviced.

All information, illustrations, and specifications contained in this manual are based on the latest information available at the time of publication. The right is reserved to make changes at any time without notice.

4.2 SAFETY

4.2.1 TECHNICIAN SAFETY INFORMATION

WARNING: WHEN OPERATING, ENGINES PRODUCE AN ODORLESS GAS CALLED CARBON MONOXIDE. INHALING CARBON MONOXIDE GAS CAN RESULT IN SLOWER REACTION TIMES AND CAN LEAD TO PERSONAL INJURY OR DEATH. WHEN THE ENGINE IS OPERATING, KEEP SERVICE AREAS WELL VENTILATED OR ATTACH THE VEHICLE EXHAUST SYSTEM TO THE SHOP EXHAUST REMOVAL SYSTEM.

Set the parking brake and block the wheel before testing or repairing the vehicle. It is especially important to block the wheels on front-wheel drive vehicles; the parking brake does not hold drive wheels.

When servicing a vehicle, always wear eye protection, and remove any metal jewelry such as rings, watchbands or bracelets that might make an inadvertent electrical contact.

4.2.4 DRBIIIT SAFETY INFORMATION

WARNING: EXCEEDING THE LIMITS OF THE DRBIIIT MULTIMETER IS DANGEROUS. READ ALL DRBIIIT INSTRUCTIONS BEFORE USING THE MULTIMETER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

• Follow the vehicle manufacturer’s service speci-

fications at all times.

• Do not use the DRBIIIt if it has been damaged.

• Do not use the test leads if the insulation is

damaged or if metal is exposed.

• To avoid electrical shock, do not touch the test

leads, tips, or the circuit being tested.

• Choose the proper range and functions for the

measurement. Do not try voltage or current measurement that may exceed the rated capacity.

• Donot exceed the limits shown in the table below:

FUNCTION INPUT LIMIT

Volts 0 - 500 peak volts AC

0 - 500 volts DC Ohms (resistance)* 0 -1.12 megohms Frequency Measured

Frequency Generated Temperature -58 - 1100°F

0-10kHz

-50 - 600°C

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GENERAL INFORMATION

* Ohms cannot be measured if voltage is present.

Ohms can be measured only in a non-powered circuit.

• Voltage between any terminal and ground must

not exceed 500v DC or 500v peak AC.

• Use caution when measuring voltage above 25v

DC or 25v AC.

• Use the low current shunt to measure circuits up

to 10A. Use the high current clamp to measure circuits exceeding 10A.

• When testing for the presence of voltage or cur-

rent, make sure the meter is functioning correctly. Take a reading of a known voltage or current before accepting a zero reading.

• When measuring current, connect the meter in

series with the load.

• Disconnect the live test lead before disconnecting

the common test lead.

• When using the meter function, keep the

DRBIIIt away from spark plug or coil wires to avoid measuring error from outside interference.

4.3 WARNINGS

ASSISTANT AVAILABLE TO OPERATE THE DRBIIIT OR OTHER TEST EQUIPMENT. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

5.0 REQUIRED TOOLS AND EQUIPMENT

DRBIIIt (diagnostic read-out box) Jumper wires Ohmmeter Voltmeter Sentry Key Tester Test Light 8443 SRS Airbag System Load Tool 9077 Occupant Classification Seat Weights

4.3.1 VEHICLE DAMAGE WARNINGS

Before disconnecting any control module, make sure the ignition is “off”. Failure to do so could damage the module.

When testing voltage or continuity at any control module, use the terminal side (not the wire end) of the connector. Do not probe a wire through the insulation; this will damage it and eventually cause it to fail because of corrosion. Be careful when performing electrical tests so as to prevent accidental shorting of terminals. Such mistakes can damage fuses or components. Also, a second code could be set, making diagnosis of the original problem more difficult.

4.3.2 ROAD TESTING A COMPLAINT

VEHICLE

Some complaints will require a test drive as part of the repair verification procedure. The purpose of the test drive is to try to duplicate the diagnostic code or symptom condition.

WARNING: REASSEMBLE ALL COMPONENTS BEFORE ROAD TESTING A VEHICLE. DO NOT TRY TO READ THE DRBIIIT SCREEN OR OTHER TEST EQUIPMENT DURING A TEST DRIVE. DO NOT HANG THE DRBIIIT OR OTHER TEST EQUIPMENT FROM THE REARVIEW MIRROR DURING A TEST DRIVE. HAVE AN

6.0 GLOSSARY OF TERMS

ABS antilock brake system ACT actuator APS adjustable pedals system ATC automatic temperature control BCM body control module BPS bladder pressure sensor BTS belt tension sensor CAB controller antilock brake CMTC compass/mini-trip computer CPA connector positive assurance DAB driver airbag DCHA diesel cabin heater assist (cabin heater) DLC data link connector DTC diagnostic trouble code

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GENERAL INFORMATION

DR driver EBL electric back lite (rear window defogger) ECM engine control module EVIC electronic vehicle information center FCM front control module GCC Gulf Coast Countries HE hall effect HFM hands free module HVAC heater ventilation, air conditioning IPM integrated power module LDU lower drive unit LHD left hand drive MIC mechanical instrument cluster MTC manual temperature control MSMAPM memory seat/mirror/adjustable pedals

module

NAV navigation NGC next generation controller OBD on board diagnostics OCM occupant classification module OCS occupant classification system OCSVR occupant classification system verifica-

tion required

ODO odometer ORC occupant restraint controller PAB passenger airbag

PASS passenger PCI Programmable Communication Inter-

face (vehicle communication bus)

PCM powertrain control module PDC power distribution center PLG power liftgate PLGM power liftgate module PSD power sliding door PSDM power sliding door module PWM pulse width modulated RHD Right Hand Drive RKE remote keyless entry RX receive SAB seat airbag SBS seat belt switch SBT seat belt tensioner SKREEM sentry key remote entry module SQUIB also called initiator (located inside air-

bag)

SRS supplemental restraint system TCM transmission control module TPMS tire pressure monitor system TX transmit VFD vacuum fluorescent display VTSS vehicle theft security system

Page 74

7.0

DIAGNOSTIC INFORMATION AND

PROCEDURES

Page 75

ADJUSTABLE PEDALS

Symptom:

PEDAL SENSOR OPEN/SHORTED TO GROUND

When Monitored and Set Condition:

PEDAL SENSOR OPEN/SHORTED TO GROUND

When Monitored: Continuously. Set Condition: When the Memory Seat Mirror Adjustable Pedals Module(MSMAPM)

detects a ground condition on the Adjustable Pedal Sensor Signal circuit. When this fault is set, the pedals will be allowed to move 1.5 seconds and then shut off.

POSSIBLE CAUSES

INTERMITTENT DTC ADJUSTABLE PEDALS SENSOR FEED CIRCUIT OPEN ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT OPEN ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT SHORTED TO GROUND ADJUSTABLE PEDALS SENSOR SIGNAL/RETURN CIRCUITS HAVE EXCESSIVE RESISTANCE ADJUSTABLE PEDALS SENSOR FAULT MSMAPM - INTERNAL FAULT

TEST ACTION APPLICABILITY

1 With the DRBIIIt, erase DTC’s.

With the DRBIIIt, read DTC’s. Does the DRBIIIt display PEDAL SENSOR OPEN/SHORTED TO GROUND DTC active?

Yes → Go To 2 No → Go To 9

2 Turn the ignition off.

Ensure the Adjustable Pedals Sensor is fully seated and locked. Turn the ignition on. With the DRBIIIt, read the active DTC’s. Does the DRBIIIt display PEDAL SENSOR OPEN/SHORTED TO GROUND DTC active?

Yes → Go To 3

All

No → Go To 9

3 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Turn the ignition on. Measure the voltage between the Adjustable Pedals Sensor Feed circuit and the Adjustable Pedals Sensor Return circuit. Is the voltage between 4 and 5.2 volts?

Yes → Go To 4 No → Go To 8

All

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ADJUSTABLE PEDALS

PEDAL SENSOR OPEN/SHORTED TO GROUND — Continued

TEST ACTION APPLICABILITY

4 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Disconnect the MSMAPM harness connector. Measure the resistance of the Adjustable Pedals Sensor Signal circuit between the Adjustable Pedals Sensor connector and the MSMAPM connector. Is the resistance below 1.0 ohm?

Yes → Go To 5 No → Repair the Adjustable Pedals Sensor Signal circuit for an open.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

5 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Disconnect the MSMAPM harness connector. Measure the resistance of the Adjustable Pedals Sensor Signal circuit to ground. Is the resistance below 1.0 ohm?

Yes → Repair the Adjustable Pedals Sensor Signal circuit for a short to

ground. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 6

6 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Disconnect the MSMAPM harness connector. Connect a jumper wire between the Adjustable Pedals Sensor Signal circuit and the Adjustable Pedals Sensor Return circuit. Measure the resistance between the Adjustable Pedals Sensor Signal circuit and the Adjustable Pedals Sensor Return circuit at the MSMAPM harness connector. Is the resistance below 1.0 ohm?

Yes → Go To 7 No → Checkandrepairfor excessive resistance in theAdjustable Pedals

Sensor Signal/Return circuits. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

7 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Measure the resistance between the Adjustable Pedals Sensor Signal circuit and the Adjustable Pedals Sensor Return circuit at the Adjustable Pedals Sensor harness connector. Is the resistance below 100.0 ohms?

Yes → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information.. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Replace the Adjustable Pedals Sensor in accordance with the

Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

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ADJUSTABLE PEDALS

PEDAL SENSOR OPEN/SHORTED TO GROUND — Continued

TEST ACTION APPLICABILITY

8 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Disconnect the MSMAPM harness connector. Measure the resistance of the Adjustable Pedals Sensor Feed circuit between the Adjustable Pedals Sensor connector and the MSMAPM connector. Is the resistance below 1.0 ohm?

Yes → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information.. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Repair the Adjustable Pedals Sensor Feed circuit for an open.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

9 Turn the ignition off.

Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals. Refer to any Hotline letters or Technical Service Bulletins that may apply. Were any problems found?

Yes → Repair as necessary.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Test Complete.

All

Page 78

Symptom:

PEDAL SENSOR SHORTED TO BATTERY

When Monitored and Set Condition:

PEDAL SENSOR SHORTED TO BATTERY

When Monitored: Continuously. Set Condition: When the Memory Seat Mirror Adjustable Pedals Module(MSMAPM)

detects the voltage on the Adjustable Pedal Sensor Signal circuit is too high. When this fault is set, the pedals will be allowed to move for 1.5 seconds and then shut off.

POSSIBLE CAUSES

INTERMITTENT DTC ADJUSTABLE PEDALS SENSOR FAULT

ADJUSTABLE PEDALS

ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY ADJUSTABLE PEDALS SENSOR FEED CIRCUIT SHORTED TO BATTERY ADJUSTABLE PEDALS SENSOR RETURN CIRCUIT OPEN MSMAPM - INTERNAL FAULT

TEST ACTION APPLICABILITY

1 With the DRBIIIt, erase DTC’s.

With the DRBIIIt, read DTC’s. Does the DRBIIIt display PEDAL SENSOR SHORTED TO BATTERY DTC active?

Yes → Go To 2 No → Go To 7

2 Turn the ignition off.

Ensure the Adjustable Pedals Sensor is fully seated and locked. Turn the ignition on. With the DRBIIIt, read the active DTC’s. Does the DRBIIIt display PEDAL SENSOR SHORTED TO BATTERY DTC active?

Yes → Go To 3 No → Go To 7

3 Disconnect the Adjustable Pedals Sensor harness connector.

Turn the ignition on. With the DRBIIIt, read the active DTC’s. Does the DRBIIIt display PEDAL SENSOR SHORTED TO BATTERY active?

All

Yes → Go To 4 No → Replace the Adjustable Pedals Sensor in accordance with the

Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

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ADJUSTABLE PEDALS

PEDAL SENSOR SHORTED TO BATTERY — Continued

TEST ACTION APPLICABILITY

4 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Disconnect the MSMAPM harness connector.

Note: Check connector - Clean/repair as necessary.

Turn the ignition on. Measure the voltage of the Adjustable Pedals Sensor Signal circuit. Is there any voltage present?

Yes → Repair the Adjustable Pedals Sensor Signal circuit for a short to

voltage. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 5

All

5 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Disconnect the MSMAPM harness connector.

Note: Check connector - Clean/repair as necessary.

Turn the ignition on. Measure the voltage of the Adjustable Pedals Sensor Feed circuit. Is there any voltage present?

Yes → Repair the Adjustable Pedals Sensor Feed circuit for a short to

voltage. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 6

6 Turn the ignition off.

Disconnect the Adjustable Pedals Sensor harness connector. Disconnect the MSMAPM harness connector.

Note: Check connector - Clean/repair as necessary.

Measure the resistance of the Adjustable Pedals Sensor Return circuit between the Adjustable Pedals Sensor connector and the MSMAPM connector. Is the resistance below 1 ohm?

Yes → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information.. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Repair the Adjustable Pedals Sensor Return circuit for an open.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

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ADJUSTABLE PEDALS

PEDAL SENSOR SHORTED TO BATTERY — Continued

TEST ACTION APPLICABILITY

7 Turn the ignition off.

Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals. Move the pedals all the way forward and rearward to see if the DTC is related to position. Refer to any Hotline letters or Technical Service Bulletins that may apply. Were any problems found?

Yes → Repair as necessary.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Test Complete.

All

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ADJUSTABLE PEDALS

Symptom:

PEDAL SW STUCK FORWARD

When Monitored and Set Condition:

PEDAL SW STUCK FORWARD

When Monitored: Continuously. Set Condition: When the Memory Seat Mirror Adjustable Pedals Module(MSMAPM)

detects battery voltage on the Adjustable Pedals Switch Forward circuit for more than 20 seconds. When this fault is set, the pedals will not move with switch, but will work for memory.

POSSIBLE CAUSES

INTERMITTENT DTC ADJUSTABLE PEDALS SWITCH FAULT ADJUSTABLE PEDALS SWITCH FORWARD CIRCUIT SHORTED TO BATTERY MSMAPM - INTERNAL FAULT

TEST ACTION APPLICABILITY

1 With the DRBIIIt, erase DTC’s.

Turn the ignition on. Wait 30 seconds. With the DRBIIIt, read DTC’s. Does the DRBIIIt display PEDAL SW STUCK FORWARD DTC active?

Yes → Go To 2 No → Go To 4

2 Turn the ignition off.

Disconnect the Adjustable Pedals Switch connector. Turn the ignition on. Wait 10 seconds. With the DRBIIIt, read DTC’s. Does the DRBIIIt display PEDAL SW STUCK FORWARD DTC active?

Yes → Go To 3 No → Replace the Adjustable Pedals Switch in accordance with the

Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

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ADJUSTABLE PEDALS

PEDAL SW STUCK FORWARD — Continued

TEST ACTION APPLICABILITY

3 Turn the ignition off.

Disconnect the MSMAPM harness connector. Disconnect the Adjustable Pedals Switch connector. Turn the ignition ON. Measure the voltage of the Adjustable Pedals Switch Forward circuit. Is there any voltage present?

Yes → Repair theAdjustable Pedals Switch Forward circuit for a short to

voltage. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

4 Turn the ignition off.

Check for sticking switch. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals. Refer to any Hotline letters or Technical Service Bulletins that may apply. Were any problems found?

Yes → Repair as necessary.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Test Complete.

All

Page 83

ADJUSTABLE PEDALS

Symptom:

PEDAL SW STUCK REARWARD

When Monitored and Set Condition:

PEDAL SW STUCK REARWARD

When Monitored: Continuously. Set Condition: When the Memory Seat Mirror Adjustable Pedals Module(MSMAPM)

detects battery voltage on the Adjustable Pedals Switch Rearward circuit for more than 20 seconds. When this fault is set, the pedals will not move with switch, but will work for memory.

POSSIBLE CAUSES

INTERMITTENT DTC ADJUSTABLE PEDALS SWITCH FAULT ADJUSTABLE PEDALS SWITCH REARWARD CIRCUIT SHORTED TO BATTERY MSMAPM - INTERNAL FAULT

TEST ACTION APPLICABILITY

1 With the DRBIIIt, erase DTC’s.

Turn the ignition on. Wait 30 seconds. With the DRBIIIt, read DTC’s. Does the DRBIIIt display PEDAL SW STUCK REARWARD DTC active?

Yes → Go To 2 No → Go To 4

2 Turn the ignition off.

Disconnect the Adjustable Pedals Switch connector. Turn the ignition on. Wait 10 seconds. With the DRBIIIt, read DTC’s. Does the DRBIIIt display PEDAL SW STUCK REARWARD DTC active?

Yes → Go To 3 No → Replace the Adjustable Pedals Switch in accordance with the

Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

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ADJUSTABLE PEDALS

PEDAL SW STUCK REARWARD — Continued

TEST ACTION APPLICABILITY

3 Turn the ignition off.

Disconnect the MSMAPM harness connector. Disconnect the Adjustable Pedals Switch connector. Turn the ignition ON. Measure the voltage of the Adjustable Pedals Switch Rearward circuit. Is there any voltage present?

Yes → Repair the Adjustable Pedals Switch Rearward circuit for a short

to voltage. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

4 Turn the ignition off.

Check for a sticking switch. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals. Refer to any Hotline letters or Technical Service Bulletins that may apply. Were any problems found?

Yes → Repair as necessary.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Test Complete.

All

Page 85

ADJUSTABLE PEDALS

Symptom:

*CAN’T ADJUST PEDALS

POSSIBLE CAUSES

VEHICLE IN REVERSE OR CRUISE CONTROL ACTIVATED BODY STYLE FAULT ACTIVE DTC’S ADJUSTABLE PEDALS SENSOR CONNECTOR NOT FULLY SEATED ADJUSTABLE PEDALS MOTOR FAULT ADJUSTABLE PEDALS MOTOR CIRCUITS OPEN BUS COMMUNICATION FAULT MEMORY SEAT MIRROR ADJUSTABLE PEDALS MODULE FUSED B(+) CIRCUIT OPEN MEMORY SEAT MIRROR ADJUSTABLE PEDALS MODULE GROUND CIRCUIT OPEN IOD FUSE OPEN ADJUSTABLE PEDALS SWITCH FUSED B(+) CIRCUIT OPEN ADJUSTABLE PEDALS SWITCH GROUND CIRCUIT OPEN ADJUSTABLE PEDALS SWITCH FAULT ADJUSTABLE PEDALS SWITCH REARWARD CIRCUIT OPEN ADJUSTABLE PEDALS SWITCH FORWARD CIRCUIT OPEN MSMAPM - INTERNAL FAULT

TEST ACTION APPLICABILITY

1 NOTE: Adjustable Pedals are disabled when the vehicle is in Reverse or

when the Speed Control is activated.

Check whether vehicle is(was) in Reverse and whether Speed Control is(was) activated. Is(was) the vehicle in Reverse or is(was) Speed Control activated?

Yes → Correct as necessary.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 2

2 Turn the ignition on.

With the DRBIIIt, try to read MSMAPM information. Can the MSMAPM be detected by the DRBIIIt?

All

Yes → Go To 3 No → Go To 18

Page 86

ADJUSTABLE PEDALS

*CAN’T ADJUST PEDALS — Continued

TEST ACTION APPLICABILITY

3 Turn the ignition on.

With the DRBIIIt, go to MSMAPM menu. Does the DRBIIIt display RS BODY STYLE?

Yes → Go To 4 No → Ensure the the vehicle VIN is programmed and correct. If valid,

replace the Memory Seat Mirror Adjustable Pedals Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

4 Turn the ignition on.

With the DRBIIIt, erase DTC’s. With the DRBIIIt, read DTC’s. Does the DRBIIIt display any DTC’s active?

Yes → Refer to symptom list for problems related to the active DTC’s.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 5

5 Turn the ignition on.

With the DRBIIIt in Inputs/Outputs, read the pedal forward and pedal rearward switches. Actuate the Adjustable Pedals Switch in the forward and rearward positions. Does the DRBIIIt display PEDAL FWD/RWD SW CLOSED when switch is activated?

Yes → Go To 6 No → Go To 10

6 Turn the ignition on.

With the DRBIIIt, actuate the pedal motor forward and rearward. Do the Adjustable Pedals move?

Yes → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

No → Go To 7

7 Turn the ignition off.

Ensure the Adjustable Pedals Sensor is fully seated and locked. Inspect the MSMAPM connector and the Adjustable Pedals Motor connector. Are the connectors FULLY seated and properly plugged in?

Yes → Go To 8 No → Repair as necessary.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

Page 87

ADJUSTABLE PEDALS

*CAN’T ADJUST PEDALS — Continued

TEST ACTION APPLICABILITY

8 Turn the ignition off.

Disconnect the Adjustable Pedals Motor harness connector. Using a 12-volt test light, connect it between the Adjustable Pedals Motor Forward and Adjustable Pedals Motor Rearward circuits at the Adjustable Pedals Motor harness connector. With the DRBIIIt, actuate the pedal motor forward and rearward. Does the test light illuminate brightly for both directions?

Yes → Replace the Adjustable Pedals Assembly in accordance with the

Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 9

All

9 Turn the ignition on.

Using a 12-volt test light, back-probe between the Adjustable Pedals Motor Forward and Adjustable Pedals Motor Rearward circuits at the MSMAPM harness connector. With the DRBIIIt, actuate the pedal forward and pedal rearward. Does the test light illuminate brightly for both directions?

Yes → Repair the Adjustable Pedals Motor Forward/Rearward circuit(s)

for an open. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

10 Turn the ignition off.

Inspect for an open IOD fuse in the IPM. Is the IOD fuse open?

Yes → Replace the fuse. If the fuse is open make sure to check for a short

to ground. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 11

11 Turn the ignition off.

Disconnect the Adjustable Pedals Switch harness connector. Measure the voltage between the Adjustable Pedals Switch Fused B+ and Ground circuits (cavities1&2). Is there battery voltage present?

All

Yes → Go To 12 No → Go To 16

Page 88

ADJUSTABLE PEDALS

*CAN’T ADJUST PEDALS — Continued

TEST ACTION APPLICABILITY

12 Turn the ignition off.

Disconnect the Adjustable Pedals Switch harness connector. Turn the ignition on. With the DRBIIIt in Inputs/Outputs, monitor the PEDAL FORWARD SW state. Connect a jumper wire between the Adjustable Pedals Switch Fused B+ circuit and the Adjustable Pedals Switch Forward circuit. Does the DRBIIIt display PEDAL FORWARD SW CLOSED?

Yes → Go To 13 No → Go To 15

All

13 Turn the ignition off.

Disconnect the Adjustable Pedals Switch harness connector. Turn the ignition on. With the DRBIIIt in Inputs/Outputs, monitor the PEDAL REARWARD SW state. Connect a jumper wire between the Adjustable Pedals Switch Fused B+ circuit and the Adjustable Pedals Switch Rearward circuit. Does the DRBIIIt display PEDAL REARWARD SW CLOSED?

Yes → Replace the Adjustable Pedals Switch in accordance with the

Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 14

14 Turn the ignition off.

Disconnect the Adjustable Pedals Switch harness connector. Disconnect the MSMAPM harness connector. Measure the resistance of the Adjustable Pedals Switch Rearward circuit between the Adjustable Pedals Switch connector and the MSMAPM connector. Is the resistance below 1.0 ohm?

Yes → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Repair the Adjustable Pedals Switch Rearward circuit for an

open. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

15 Turn the ignition off.

Disconnect the Adjustable Pedals Switch harness connector. Disconnect the MSMAPM harness connector. Measure the resistance of the Adjustable Pedals Switch Forward circuit between the Adjustable Pedals Switch connector and the MSMAPM connector. Is the resistance below 1.0 ohm?

Yes → Replace and program the Memory Seat Mirror Adjustable Pedals

Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Repair the Adjustable Pedals Switch Forward circuit for an open.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

Page 89

ADJUSTABLE PEDALS

*CAN’T ADJUST PEDALS — Continued

TEST ACTION APPLICABILITY

16 Turn the ignition off.

Disconnect the Adjustable Pedals Switch harness connector. Measure the voltage between Adjustable Pedals Switch Fused B+ circuit and vehicle body ground. Is there battery voltage present?

Yes → Go To 17 No → Repair the Adjustable Pedals Switch Fused B(+) circuit for an

open. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

17 Turn the ignition off.

Disconnect the Adjustable Pedals Switch harness connector. Measure the resistance between the Adjustable Pedals Switch Ground circuit and vehicle body ground. Is the resistance below 1.0 ohm?

Yes → Replace the Adjustable Pedals Switch in accordance with the

Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Repair the Adjustable Pedals Switch Ground circuit for an open.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

18 Turn the ignition off.

Disconnect the MSMAPM harness connector. Measure the voltage between the MSMAPM Fused B+ circuit and the Ground circuit at the MSMAPM harness connector. Is there battery voltage present?

Yes → Refer to symptom *NO RESPONSE FROM ADJUSTABLE PED-

ALS ASSEMBLY in the BODY COMMUNICATION category. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 19

19 Turn the ignition off.

Disconnect the MSMAPM harness connector. Measure the voltage between the MSMAPM Fused B+ circuit and vehicle body ground. Is there battery voltage present?

All

Yes → Repair the Memory Seat Mirror Adjustable Pedals Module

Ground circuit for an open. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Repair the Memory Seat Mirror Adjustable Pedals Module Fused

B(+) circuit for an open. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

Page 90

ADJUSTABLE PEDALS

Symptom:

*CAN’T SET/RECALL MEMORY POSITIONS

POSSIBLE CAUSES

DTC ACTIVE PEDALS OPERATION BCM OPERATION FAULT ADJUSTABLE PEDALS SENSOR ADJUSTABLE PEDALS SENSOR VOLTAGE FAULT BCM COMMUNICATION FAULT MSMAPM - INTERNAL FAULT

TEST ACTION APPLICABILITY

1 With the DRBIIIt, erase DTC’s.

With the DRBIIIt, read the active DTC’s. Any active DTC’s?

All

Yes → Refer to symptom list for problems related to the active DTC.

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Go To 2

2 Attempt to adjust the pedals using the Adjustable Pedals Switch.

Do the pedals adjust?

Yes → Go To 3 No → Refer to *CAN’T ADJUST PEDALS information for the related

symptom(s). Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

3 Attempt to set and recall other memory functions in the vehicle.

Can other vehicle memory functions be set and recalled correctly?

Yes → Go To 4 No → Check DTC’s in the BCM and refer to BODY information for the

related symptom(s). Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

4 Turn the ignition off.

Turn the ignition on. With the DRBIIIt in Sensors, read the pedal position voltage. Monitor the pedal position voltage while adjusting pedals forward and rearward. Is there any change of voltage?

All

Yes → Go To 5 No → Check for proper Adjustable Pedals Sensor installation and align-

ment. Check wiring and connectors. Repair as necessary. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

Page 91

ADJUSTABLE PEDALS

*CAN’T SET/RECALL MEMORY POSITIONS — Continued

TEST ACTION APPLICABILITY

5 Does the pedal position voltage increase when moving forward and decrease when

moving rearward?

Yes → Go To 6 No → Check Adjustable Pedals Sensor and MSMAPM pinouts. Repair

as necessary. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

6 Can the DRBIIIt communicate with the BCM? All

Yes → Replace the Memory Seat Mirror Adjustable Pedals Module in

accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

No → Refer to BODY information for the related symptom(s).

Perform ADJUSTABLE PEDALS VERIFICATION TEST - VER

All

Page 92

AIRBAG

Symptom List:

ACCELEROMETER 1 ACCELEROMETER 2 INTERNAL 1 INTERNAL 2 INTERNAL 3 INTERNAL 4 MODULE NOT CONFIGURED FOR OCS OUTPUT DRIVER 1 OUTPUT DRIVER 2 STORED ENERGY FIRING 1

Test Note: All symptoms listed above are diagnosed using the same tests.

The title for the tests will be ACCELEROMETER 1.

When Monitored and Set Condition:

ACCELEROMETER 1

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

ACCELEROMETER 2

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

INTERNAL 1

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

INTERNAL 2

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

INTERNAL 3

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

Page 93

AIRBAG

ACCELEROMETER 1 — Continued

INTERNAL 4

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

MODULE NOT CONFIGURED FOR OCS

When Monitored: With the ignition on, the ACM monitors the PCI Bus for OCM messages.

Set Condition: The code will set, if the ACM is not configured for OCM and OCM PCI Bus messages are on the PCI Bus.

OUTPUT DRIVER 1

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

OUTPUT DRIVER 2

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

STORED ENERGY FIRING 1

When Monitored: With the ignition on, the module on board diagnostics continuously performs internal circuit tests.

Set Condition: This DTC will set if the module identifies an out of range internal circuit.

POSSIBLE CAUSES

OCCUPANT RESTRAINT CONTROLLER - ORC

TEST ACTION APPLICABILITY

1 Turn the ignition on.

NOTE: Ensure the battery is fully charged. NOTE: For the purpose of this test, the AECM and ACM modules will be referred to as an ORC.

Select the appropriate module and DTC type combination:

All

ORC - ACTIVE DTC

Go To 2

ORC - STORED DTC

Go To 2

NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.

Page 94

AIRBAG

ACCELEROMETER 1 — Continued

TEST ACTION APPLICABILITY

2 WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-

TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. WARNING: IF THE OCCUPANT CLASSIFICATION CONTROLLER IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS CAN RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.

If there are no possible causes remaining, view repair.

Repair:

Replace the Occupant Restraint Controller in accordance with Service Instructions. Perform __AIRBAG VERIFICATION TEST - VER 1.

All

Page 95

AIRBAG

Symptom List:

AIRBAG WARNING INDICATOR OPEN AIRBAG WARNING INDICATOR SHORT

Test Note: All symptoms listed above are diagnosed using the same tests.

The title for the tests will be AIRBAG WARNING INDICATOR OPEN.

When Monitored and Set Condition:

AIRBAG WARNING INDICATOR OPEN

When Monitored: With ignition on theACM monitors the PCI Bus for a message from the MIC containing the airbag warning indicator status. The ACM request the warning lamp status from the MIC once every second.

Set Condition: This DTC will set immediately if the indicator status is OPEN.

AIRBAG WARNING INDICATOR SHORT

Set Condition: This DTC will set immediately if the indicator status is SHORT.

POSSIBLE CAUSES

MIC, COMMUNICATION FAILURE WARNING INDICATOR ACM, WARNING INDICATOR STORED CODE OR INTERMITTENT CONDITION ACTIVE CODE PRESENT

TEST ACTION APPLICABILITY

1 Turn the ignition on.

Ensure the battery is fully charged.

NOTE: For the purpose of this test, the AECM and ORC modules will be referred to as an ACM.

SELECT ACTIVE or STORED DTC:

All

ACM - ACTIVE DTC

Go To 2

ACM - STORED DTC

Go To 5

NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.

Page 96

AIRBAG

AIRBAG WARNING INDICATOR OPEN — Continued

TEST ACTION APPLICABILITY

2 With the DRBIIIt, ensure PCI Bus communications with the Instrument Cluster.

Is the Instrument Cluster communicating on the PCI Bus?

Yes → Go To 3 No → Refer to category COMMUNICATION CATEGORYand select the

related symptom NO RESPONSE or INSTRUMENT CLUSTER BUS +/- SIGNAL OPEN. Perform __AIRBAG VERIFICATION TEST - VER 1.

All

3 With the DRBIIIt select PASSIVE RESTRAINTS, AIRBAG and MONITOR DIS-

PLAY. Using the DRBIIIt, read the WARNING LAMP MONITOR screen. Select the LAMP STATUS displayed on the DRB monitors screen. Observe the Lamp Driver State and Actual Lamp State. Is the LAMP DRIVER and ACTUAL LAMP STATE: OK?

YES

Go To 4

Replace Instrument Cluster. Perform __AIRBAG VERIFICATION TEST - VER 1.

4 WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-

TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.

If there are no possible causes remaining, view repair.

Repair

Replace the Airbag Control Module in accordance with Service Instructions. Perform __AIRBAG VERIFICATION TEST - VER 1.

All

Page 97

AIRBAG

AIRBAG WARNING INDICATOR OPEN — Continued

TEST ACTION APPLICABILITY

5 With the DRBIIIt, record and erase all DTC’s from all Airbag modules.

If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Look for chaffed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals. The following additional checks may assist you in identifying a possible intermittent problem. Reconnect any disconnected components and harness connector.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.

With the DRBIIIt monitor active codes as you work through the following steps.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, MAINTAIN A SAFE DISTANCE FROMALLAIRBAGS WHILE PERFORMING THE FOLLOWING STEPS.

Wiggle the wiring harness and connectors of the related airbag circuit or component. If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop. IF only stored codes return continue the test until the problem area has been isolated In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question. Are any ACTIVE DTCs present?

All

Yes → Select appropriate symptom from Symptom List. No → No problem found at this time. Erase all codes before returning

vehicle to customer.

Page 98

Symptom:

CALIBRATION MISMATCH

When Monitored and Set Condition:

CALIBRATION MISMATCH

When Monitored: With ignition on, the ACM monitors the PCI Bus for the VIN message containing the body style. Note: The VIN message should match the vehicle VIN plate.

Set Condition: If the Body style stored in ACM does not exactly match the vehicle body style indicated by the PCM for 2 consecutive VIN messages, then the fault shall be set.

POSSIBLE CAUSES

PCM, PCI COMMUNICATION FAILURE PCM VEHICLE IDENTIFICATION NUMBERS INCORRECT OR MISSING

AIRBAG

ACM CALIBRATION MISMATCH STORED CODE OR INTERMITTENT CONDITION ACTIVE CODE PRESENT

TEST ACTION APPLICABILITY

1 Turn the ignition on.

NOTE: Ensure the battery is fully charged. NOTE: For the purpose of this test, the AECM and ORC modules will be referred to as an ACM.

SELECT ACTIVE or STORED DTC:

ACM - ACTIVE DTC

Go To 2

ACM - STORED DTC

Go To 5

NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.

2 Turn the ignition on.

NOTE: Ensure the battery is fully charged.

Connect the DRB to the data link connector and select PASSIVE RESTRAINTS, AIRBAG, SYSTEM TEST. With the DRBIIIt, read the system test. Does the DRB show PCM Active on the Bus:?

All

Yes → Go To 3 No → Refer to category COMMUNICATION CATEGORYand select the

related symptom. Perform __AIRBAG VERIFICATION TEST - VER 1.

Page 99

AIRBAG

CALIBRATION MISMATCH — Continued

TEST ACTION APPLICABILITY

3 With the DRB select ENGINE MISCELLANEOUS, select MISC FUNCTION, and

then CHECK VIN to read the Vehicle Identification Number in the Powertrain Control Module. Compare the VIN displayed on the DRB screen and the Vehicle VIN plate. Does the VIN plate and the PCM VIN match?

Yes → Go To 4 No → Replace the Powertrain Control Module and program with the

correct vehicle identification number. Perform __AIRBAG VERIFICATION TEST - VER 1.

All

4 WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-

If there are no possible causes remaining, view repair.

Repair

Replace the Airbag Control Module in accordance with Service Information. Perform __AIRBAG VERIFICATION TEST - VER 1.

5 With the DRBIIIt, record and erase all DTC’s from all Airbag modules.

If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.

With the DRBIIIt monitor active codes as you work through the following steps.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, MAINTAIN A SAFE DISTANCE FROMALLAIRBAGS WHILE PERFORMING THE FOLLOWING STEPS.

All

Yes → Select appropriate symptom from Symptom List. No → No problem found at this time. Erase all codes before returning

vehicle to customer.

Page 100

Symptom:

CLUSTER MESSAGE MISMATCH

When Monitored and Set Condition:

CLUSTER MESSAGE MISMATCH

When Monitored: After the MIC bulb test is completed, the ACM compares the Lamp Request by ACM, On or Off, and the Lamp on by MIC, On or Off, PCI Bus messages. Each message is transmitted one time per second or when a change in the lamp state occur.

Set Condition: If the Lamp Request by ACM, On or Off, and the Lamp on by MIC, On or Off, messages do not match, the code will set.

POSSIBLE CAUSES

MIC DIAGNOSTIC CODES

AIRBAG

CLUSTER MESSAGE MISMATCH STORED CODE OR INTERMITTENT CONDITION ACM, CLUSTER MESSAGE MISMATCH ACTIVE CODE PRESENT

TEST ACTION APPLICABILITY

1 Turn the ignition on.

Ensure the battery is fully charged.

NOTE: For the purpose of this test, the AECM and ORC modules will be referred to as an ACM.

SELECT ACTIVE or STORED DTC:

ACM - ACTIVE DTC

Go To 2

ACM - STORED DTC

Go To 5

NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.

2 Turn the ignition on.

With the DRBIIIt, read the MIC DTCs. Does the DRBIIIt display any active Diagnostic Codes?

Yes → Refer to symptom list for problems related to Instrument Cluster.

Perform __AIRBAG VERIFICATION TEST - VER 1.

All

No → Go To 3

Chrysler Grand Voyager 2005 Workshop Manual

Specifications and Main Features

Frequently Asked Questions

User Manual