Chrysler New Yorker 1999 User Manual

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 ......................2

3.1 AIRBAG SYSTEM ..................................................2

3.1.1 Airbag Diagnostic Trouble Codes ................................4

3.1.2 Active Codes ................................................4

3.1.3 Stored Codes................................................4

3.2 AUDIO SYSTEM ...................................................5

3.3 AUTO HEADLAMPS ................................................5

3.4 BODY CONTROL MODULE..........................................5

3.5 CHIME SYSTEM ...................................................7

3.6 CLIMATE CONTROL SYSTEMS ......................................8

3.6.1 Automatic Temperature Control (ATC) ............................8

3.6.2 Manual Temperature Control....................................8

3.6.3 HVAC Blend, Mode, and Recirculation Door Operation ..............8

3.6.4 Rear Window Defogger........................................9

3.7 EXTERIOR LIGHTING SYSTEM ......................................9

3.7.1 Exterior Lighting Battery Saver..................................9

3.7.2 Headlamp Delay .............................................9

3.7.3 Headlamp Switch.............................................9

3.7.4 Fog Lamp Control ............................................9

3.8 INTERIOR LIGHTING ...............................................9

3.8.1 Courtesy Lamp Control ........................................9

3.8.2 Illuminated Entry .............................................9

3.9 MECHANICAL INSTRUMENT CLUSTER ...............................9

3.10 MEMORY SYSTEM................................................10

3.10.1 Power Seat ................................................10

3.10.2 Memory Seat Glide ..........................................11

3.10.3 Guard Bands ...............................................11

3.10.4 Memory Mirrors .............................................11

3.10.5 Heated Seats ...............................................11

3.11 OVERHEAD TRAVEL INFORMATION SYSTEM (OTIS)/HOMELINK ........11

3.12 POWER DOOR LOCK SYSTEM .....................................12

3.13 SENTRY KEY IMMOBILIZER SYSTEM (SKIS)..........................13

3.14 VEHICLE COMMUNICATION........................................13

3.14.1 Bus Failure Message.........................................14

3.15 VEHICLE THEFT SECURITY SYSTEM................................14

3.16 WIPER SYSTEM..................................................15

3.16.1 System Features ............................................15

3.17 DIAGNOSTIC TROUBLE CODES INFORMATION .......................16

3.17.1 Airbag Trouble Codes ........................................16

3.17.2 Audio Trouble Codes.........................................16

3.17.3 Body Control Module Diagnostic Trouble Codes...................16

3.17.4 Instrument Cluster DTC’s .....................................17

3.17.5 Memory Heated Seat Mirror Module ............................17

3.18 USING THE DRBIIIT ...............................................18

3.19 DRBIIIT ERROR MESSAGES .......................................18

TABLE OF CONTENTS - CONTINUED

3.20 DRBIIIT DOES NOT POWER UP.....................................19

3.21 DISPLAY IS NOT VISIBLE..........................................19

4.0 SYSTEM COMPONENT LOCATIONS.......................................21

4.1 DATA LINK CONNECTOR ..........................................21

4.2 POWER DISTRIBUTION CENTER ...................................21

4.3 FUSE BLOCK (JUNCTION BLOCK) ..................................22

4.4 AIRBAG SYSTEM.................................................22

4.5 AUDIO SYSTEM ..................................................23

4.6 BODY CONTROL MODULE AND JUNCTION BLOCK....................25

4.7 CLIMATE CONTROL ..............................................26

4.7.1 Auto Temp Control...........................................26

4.7.2 Manual Temp Control ........................................27

4.7.3 ATCandMTC..............................................28

4.8 CHIME ..........................................................29

4.9 DOOR AJAR .....................................................29

4.10 EXTERIOR/INTERIOR LIGHTING ....................................30

4.11 INSTRUMENT CLUSTER...........................................32

4.12 MEMORY SYSTEM................................................33

4.13 OTIS ...........................................................35

4.14 POWER DOOR LOCKS/RKE .......................................36

4.15 SENTRY KEY IMMOBILIZER SYSTEM................................38

4.16 VEHICLE COMMUNICATION SYSTEM ...............................38

4.17 VEHICLE THEFT SECURITY SYSTEM ...............................40

4.18 WIPER SYSTEM..................................................41

5.0 DISCLAIMERS, SAFETY, WARNINGS ......................................43

5.1 DISCLAIMERS....................................................43

5.2 SAFETY.........................................................43

5.2.1 Technician Safety Information..................................43

5.2.2 Vehicle Preparation for Testing .................................43

5.2.3 Servicing Sub-Assemblies.....................................43

5.2.4 DRBIIIT Safety Information ....................................43

5.3 WARNINGS......................................................44

5.3.1 Vehicle Damage Warnings ....................................44

5.3.2 Road Testing A Complaint Vehicle ..............................44

6.0 FIELD EXPERIENCE (NOTES) ............................................45

7.0 DIAGNOSTIC INFORMATION AND PROCEDURES ...........................47

7.1 GENERAL TROUBLESHOOTING ....................................47

SYMPTOM IDENTIFICATION TEST 1A IDENTIFYING VEHICLE EQUIPMENT AND SYSTEM

PROBLEMS..............................................48

TABLE OF CONTENTS - Continued

AIRBAG SYSTEM

1A IDENTIFYING AIRBAG SYSTEM PROBLEMS ..................50

2A REPAIRING CLUSTER MESSAGE MISMATCH.................52

3A REPAIRING DRIVER SQUIB CIRCUIT OPEN ..................54

4A REPAIRING DRIVER SQUIB CIRCUIT SHORTED...............58

5A REPAIRING DRIVER SQUIB CIRCUIT SHORTED TO BATTERY. . .60 6A REPAIRING DRIVER SQUIB CIRCUIT SHORTED TO GROUND. . .62

7A REPAIRING LOSS OF IGNITION RUN ONLY...................64

8A REPAIRING LOSS OF IGNITION RUN/START..................68

9A REPAIRING NO CLUSTER MESSAGES.......................72

10A REPAIRING NO CLUSTER IFR MESSAGE ....................74

11A REPAIRING NO PCI COMMUNICATION.......................76

12A REPAIRING PASSENGER SQUIB CIRCUIT OPEN ..............78

13A REPAIRING PASSENGER SQUIB CIRCUIT SHORTED ..........80

14A REPAIRING PASSENGER SQUIB CIRCUIT SHORTED TO

BATTERY................................................82

15A REPAIRING PASSENGER SQUIB CIRCUIT SHORTED TO

GROUND................................................84

16A REPAIRING POWER STAGE NOT TESTED....................86

17A REPAIRING WARNING LAMP OPEN/SHORTED................88

18A REPAIRING STORED TROUBLE CODES .....................90

19A AIRBAG CONTROL MODULE REPLACEMENT PROCEDURE ....92

AUDIO SYSTEMS

1A IDENTIFYING RADIO (PCI BUS) PROBLEMS..................94

AUTOMATIC TEMPERATURE CONTROL SYSTEM 1A IDENTIFYING AUTOMATIC TEMPERATURE CONTROL

PROBLEMS.............................................114

2A REPAIRING AUTOMATIC TEMPERATURE CONTROL HEAD

SWITCHES .............................................118

3A REPAIRING 9BLEND DOOR FEEDBACK/STALL TEST FAILURE9

TROUBLE CODE ........................................120

4A REPAIRING 9BLEND DOOR OUTPUT SHORTED TO GROUND9

TROUBLE CODE ........................................128

5A REPAIRING 9BLEND, MODE, RECIRC DOOR OR COMMON

OUTPUT SHORTED TO BATTERY9 TROUBLE CODE ..........130

6A REPAIRING 9COMMON OUTPUT SHORTED TO GROUND9

TROUBLE CODE ........................................136

7A REPAIRING 9EVAPORATOR TEMPERATURE SENSOR FAILURE9

TROUBLE CODE ........................................138

8A REPAIRING ATC ASPIRATOR OR 9IN-CAR TEMPERATURE

SENSOR FAILURE9 TROUBLE CODE .......................144

9A REPAIRING 9MODE DOOR STALL/FEEDBACK FAILURE9 TROUBLE

CODE..................................................156

10A REPAIRING 9MODE DOOR OUTPUT SHORTED TO GROUND9

TROUBLE CODE ........................................166

11A REPAIRING 9RECIRC DOOR OUTPUT SHORTED TO GROUND9

TROUBLE CODE ........................................168

12A REPAIRING 9RECIRCULATION DOOR TEST FAILURE9 TROUBLE

CODE (INOPERATIVE OR STALL) ..........................170

13A REPAIRING 9SUN LOAD SENSOR FAILURE9 TROUBLE CODE . .176

14A REPAIRING COMPRESSOR CLUTCH CIRCUIT ...............178

iii

TABLE OF CONTENTS - Continued

15A REPAIRING INOPERATIVE TEMP/BLEND AIR DOOR ..........180

16A REPAIRING INOPERATIVE BLOWER MOTOR ................184

17A REPAIRING INCORRECT BLOWER MOTOR SPEEDS..........190

18A REPAIRING CONTROL MODULE (HEAD) ILLUMINATION .......194

19A REPAIRING INOPERATIVE MODE DOOR ....................196

20A REPAIRING REAR WINDOW DEFOGGER....................202

21A REPAIRING INCORRECT TEMPERATURE CONTROL IN SUN OR

SHADE.................................................208

CHIME SYSTEM

1A IDENTIFYING CHIME SYSTEM PROBLEMS..................210

2A REPAIRING CHIME INOPERATIVE ATALL TIMES .............212

3A REPAIRING CHIME INOPERATIVE WITH EXTERIOR LAMPS

ON....................................................214

4A REPAIRING CHIME INOPERATIVE WITH DRIVER SEAT BELT

UNFASTENED...........................................216

5A REPAIRING CHIME INOPERATIVE WITH KEY IN IGNITION AND

DRIVER DOOR OPEN ....................................218

6A REPAIRING CHIME BEEP REQUEST INOPERATIVE...........220

7A CHIME INOPERATIVE WITH VEHICLE SPEED ABOVE 75 MPH (120

KMH) (GULF COAST COUNTRIES ONLY)....................222

8A REPAIRING CHIME SOUNDS WITH DRIVER SEAT BELT

FASTENED .............................................224

9A REPAIRING CHIME SOUNDS WITH DRIVER DOOR OPEN .....226

DOOR AJAR SYSTEM

1A IDENTIFYING DOOR AJAR PROBLEMS .....................228

2A REPAIRING - OPEN LEFT FRONT DOOR AJAR CIRCUIT.......230

3A REPAIRING - SHORTED LEFT FRONT DOOR AJAR CIRCUIT . . .232

4A REPAIRING - OPEN LEFT REAR DOOR AJAR CIRCUIT........234

5A REPAIRING - SHORTED DOOR AJAR CIRCUIT...............236

6A REPAIRING - OPEN RIGHT FRONT DOOR AJAR CIRCUIT .....242

7A REPAIRING - OPEN RIGHT REAR DOOR AJAR CIRCUIT.......244

EXTERIOR LIGHTING SYSTEM

1A IDENTIFYING EXTERIOR LIGHTING SYSTEM FAILURES ......246

2A REPAIRING - HEADLAMP SWITCH INPUT FAILURE...........248

3A REPAIRING LOW BEAM HEADLAMPS THAT WILL NOT TURN

ON....................................................254

4A REPAIRING LOW BEAM HEADLAMPS THAT WILL NOT TURN

OFF...................................................262

5A REPAIRING PARK LAMPS THAT WILL NOT TURN ON .........266

6A REPAIRING PARK LAMPS THAT WILL NOT TURN OFF ........272

7A REPAIRING HIGH BEAM HEADLAMPS THAT WILL NOT TURN

ON....................................................276

8A REPAIRING HIGH BEAM HEADLAMPS THAT WILL NOT TURN

OFF...................................................282

9A REPAIRING FOG LAMPS THAT WILL NOT TURN ON ..........284

10A REPAIRING FOG LAMPS THAT WILL NOT TURN OFF .........290

11A REPAIRING HEADLAMP TIME DELAY .......................292

TABLE OF CONTENTS - Continued

INSTRUMENT CLUSTER

1A IDENTIFYING INSTRUMENT CLUSTER PROBLEMS...........294

2A REPAIRING 9FUEL LEVEL SENDING UNIT FAILURE9 ..........296

3A REPAIRING 9DIMMING LEVEL SWITCH FAILURE9.............300

4A REPAIRING ALL GAUGES NOT OPERATING PROPERLY.......304

5A IDENTIFYING THE INOPERATIVE GAUGE ...................306

6A REPAIRING ODOMETER NOT OPERATING PROPERLY........310

7A IDENTIFYING WARNING LAMP PROBLEMS..................312

8A REPAIRING PRND3L INDICATOR MALFUNCTIONS............316

9A REPAIRING CLUSTER AND PANEL ILLUMINATION

PROBLEMS.............................................318

10A REPAIRING FAULTY GAUGE ..............................328

11A REPAIRING TEMPERATURE GAUGE/LED OPERATION ........330

12A REPAIRING FUEL GAUGE/LED OPERATION .................332

13A REPAIRING SPEEDOMETER OPERATION ...................340

14A REPAIRING COMMUNICATION WITH TRANSMISSION

CONTROL MODULE......................................342

15A REPAIRING OIL PRESSURE WARNING LAMP OPERATING

IMPROPERLY ...........................................344

16A REPAIRING SEAT BELT LED...............................350

17A REPAIRING PARK BRAKE WARNING LAMP OPERATING

IMPROPERLY ...........................................352

18A REPAIRING LOW WASHER FLUID INDICATOR OPERATING

IMPROPERLY ...........................................360

19A REPAIRING DOOR AJAR INDICATOR .......................364

20A REPAIRING TRUNK AJAR INDICATOR ......................368

INTERIOR LIGHTING SYSTEM

1A INDENTIFYING INTERIOR LIGHTING SYSTEM FAILURES......372

2A REPAIRING COURTESY LAMP OUTPUT SHORT TO

BATTERY...............................................374

3A REPAIRING COURTESY LAMPS INOPERATIVE FROM ALL DOORS

AND COURTESY LAMP SWITCH ...........................376

4A REPAIRING - ONE INOPERATIVE COURTESY LAMP ..........384

5A REPAIRING COURTESY LAMPS ON AT ALL TIMES............386

6A REPAIRING COURTESY LAMP SWITCH INOPERATIVE ........390

MANUAL TEMPERATURE CONTROL SYSTEM 1A IDENTIFYING MANUAL TEMPERATURE CONTROL

PROBLEMS.............................................392

2A REPAIRING 9A/C CONTROL A/C SWITCH FAILURE9 TROUBLE

CODE..................................................396

3A REPAIRING 9A/C CONTROL EBL SWITCH FAILURE9 TROUBLE

CODE..................................................400

4A REPAIRING 9A/C CONTROL BLEND DOOR INPUT OPEN OR

SHORTED TO GROUND9 TROUBLE CODE ..................404

5A REPAIRING 9A/C CONTROL BLEND DOOR INPUT SHORTED TO

BATTERY9 TROUBLE CODE ...............................406

6A REPAIRING 9A/C CONTROL MODE DOOR INPUT OPEN OR

SHORTED TO BATTERY9 TROUBLE CODE ..................408

7A REPAIRING 9A/C CONTROL MODE DOOR INPUT SHORTED TO

GROUND9 TROUBLE CODE ...............................410

8A REPAIRING INOPERATIVE BLOWER MOTOR ................412

TABLE OF CONTENTS - Continued

9A REPAIRING INCORRECT BLOWER MOTOR SPEEDS..........422

10A REPAIRING CONTROL HEAD ILLUMINATION ................424

11A REPAIRING INOPERATIVE CONTROL HEAD SWITCH .........426

12A REPAIRING REAR WINDOW DEFOGGER....................430

MEMORY SYSTEM

1A IDENTIFYING MEMORY SYSTEM PROBLEMS................436

2A REPAIRING 9FRONT RISER DOWN POSITION STUCK9 TROUBLE

CODE..................................................438

3A REPAIRING 9FRONT RISER UP POSITION STUCK9 TROUBLE

CODE..................................................440

4A REPAIRING 9FRONT RISER SENSOR OUT OF RANGE LOW9

TROUBLE CODE ........................................442

5A REPAIRING 9FRONT RISER SENSOR OUT OF RANGE HIGH9

TROUBLE CODE ........................................444

6A REPAIRING 9REAR RISER DOWN POSITION STUCK9 TROUBLE

CODE..................................................446

7A REPAIRING 9REAR RISER UP POSITION STUCK9 TROUBLE

CODE..................................................448

8A REPAIRING 9REAR RISER SENSOR OUT OF RANGE LOW9

TROUBLE CODE ........................................450

9A REPAIRING 9REAR RISER SENSOR OUT OF RANGE HIGH9

TROUBLE CODE ........................................452

10A REPAIRING 9HORIZONTAL FORWARD POSITION STUCK9

TROUBLE CODE ........................................454

11A REPAIRING 9HORIZONTAL REARWARD POSITION STUCK9

TROUBLE CODE ........................................456

12A REPAIRING 9HORIZONTAL SENSOR OUT OF RANGE LOW9

TROUBLE CODE ........................................458

13A REPAIRING 9HORIZONTAL SENSOR OUT OF RANGE HIGH9

TROUBLE CODE ........................................460

14A REPAIRING 9RECLINER DOWN POSITION STUCK9 TROUBLE

CODE..................................................462

15A REPAIRING 9RECLINER UP POSITION STUCK9 TROUBLE

CODE..................................................464

16A REPAIRING 9RECLINER SENSOR OUT OF RANGE LOW9

TROUBLE CODE ........................................466

17A REPAIRING 9RECLINER SENSOR OUT OF RANGE HIGH9

TROUBLE CODE ........................................468

18A REPAIRING 9MEMORY POSITION #1 STUCK9

TROUBLE CODE ........................................470

19A REPAIRING 9MEMORY POSITION #2 STUCK9

TROUBLE CODE ........................................472

20A REPAIRING 9MEMORY SET 9S9 POSITION STUCK9 TROUBLE

CODE..................................................474

21A REPAIRING 9LEFT SEAT HEAT OUTPUT OPEN9 TROUBLE

CODE..................................................476

22A REPAIRING 9LEFT SEAT HEAT OUTPUT SHORTED TO GROUND9

TROUBLE CODE ........................................480

23A REPAIRING 9LEFT HEATED SEAT SWITCH STUCK IN LOW STATE9

TROUBLE CODE ........................................484

24A REPAIRING 9LEFT HEATED SEAT SWITCH STUCK IN HIGH STATE9

TROUBLE CODE ........................................486

TABLE OF CONTENTS - Continued

25A REPAIRING 9LEFT HEATED SEAT SWITCH OPEN/SHORTED TO

GROUND9 TROUBLE CODE ...............................488

26A REPAIRING 9LEFT THERMISTOR OUT OF RANGE LOW9 TROUBLE

CODE..................................................490

27A REPAIRING 9LEFT THERMISTOR OUT OF RANGE HIGH9

TROUBLE CODE ........................................492

28A REPAIRING 9RIGHT SEAT HEAT OUTPUT OPEN9 TROUBLE

CODE..................................................496

29A REPAIRING 9RIGHT SEAT HEAT OUTPUT SHORTED TO GROUND9

TROUBLE CODE ........................................500

30A REPAIRING 9RIGHT HEATED SEAT HEAT SWITCH STUCK IN LOW

STATE9 TROUBLE CODE..................................504

31A REPAIRING 9RIGHT HEATED SEAT HEAT SWITCH STUCK IN HIGH

STATE9 TROUBLE CODE..................................506

32A REPAIRING 9RIGHT HEATED SEAT SWITCH OPEN/SHORTED TO

GROUND9 TROUBLE CODE ...............................508

33A REPAIRING 9RIGHT THERMISTOR OUT OF RANGE LOW9

TROUBLE CODE ........................................510

34A REPAIRING 9RIGHT THERMISTOR OUT OF RANGE HIGH9

TROUBLE CODE ........................................512

35A REPAIRING 9LEFT MIRROR HORIZONTAL SENSOR OUT OF

RANGE LOW9 TROUBLE CODE ............................516

36A REPAIRING 9LEFT MIRROR HORIZONTAL SENSOR OUT OF

RANGE HIGH9 TROUBLE CODE ...........................518

37A REPAIRING 9LEFT MIRROR VERTICAL SENSOR OUT OF RANGE

LOW9 TROUBLE CODE ...................................520

38A REPAIRING 9LEFT MIRROR VERTICAL SENSOR OUT OF RANGE

HIGH9 TROUBLE CODE...................................522

39A REPAIRING 9RIGHT MIRROR HORIZONTAL SENSOR OUT OF

RANGE LOW9 TROUBLE CODE ............................524

40A REPAIRING 9RIGHT MIRROR HORIZONTAL SENSOR OUT OF

RANGE HIGH9 TROUBLE CODE ...........................526

41A REPAIRING 9RIGHT MIRROR VERTICAL SENSOR OUT OF RANGE

LOW9 TROUBLE CODE ...................................528

42A REPAIRING 9RIGHT MIRROR VERTICAL SENSOR OUT OF RANGE

HIGH9 TROUBLE CODE...................................530

43A REPAIRING INOPERATIVE MEMORY SWITCH................532

44A REPAIRING LEFT MIRROR INOPERATIVE FROM MEMORY . . . .540

45A REPAIRING RIGHT MIRROR INOPERATIVE FROM MEMORY . . .542 OVERHEAD TRAVEL INFORMATION SYSTEM

1A IDENTIFYING OVERHEAD TRAVEL INFORMATION SYSTEM

PROBLEM ..............................................544

2A REPAIRING AMBIENT TEMPERATURE SENSOR FAILURE .....546

3A REPAIRING INCORRECT AMBIENT TEMPERATURE READING. .550

4A REPAIRING OTIS MILEAGE AND DISTANCE FUNCTIONS ......556

5A REPAIRING OTIS SWITCHES ..............................558

POWER DOOR LOCK SYSTEM

1A IDENTIFYING POWER DOOR LOCK PROBLEMS .............560

2A REPAIRING ALL DOORS FAILING TO LOCK AND UNLOCK FROM

ANY SWITCH ...........................................562

vii

TABLE OF CONTENTS - Continued

3A REPAIRING ONE DOOR FAILING TO LOCK AND UNLOCK FROM

ANY SWITCH ...........................................572

4A REPAIRING ALL DOORS FAILING TO LOCK AND UNLOCK FROM

ONE SWITCH ...........................................580

5A REPAIRING ALL DOORS FAILING TO LOCK FROM ANY

SWITCH................................................584

6A REPAIRING LEFT FRONT DOOR FAILING TO LOCK FROM ANY

SWITCH................................................588

7A REPAIRING ALL DOORS FAILING TO UNLOCK FROM ANY

SWITCH................................................590

8A REPAIRING LEFT FRONT DOOR FAILING TO UNLOCK FROM ANY

SWITCH................................................594

9A REPAIRING DOOR LOCK INHIBIT ..........................596

10A REPAIRING AUTOMATIC (ROLLING) DOOR LOCKS ...........598

11A REPAIRING REMOTE KEYLESS ENTRY.....................600

12A REPAIRING INOPERATIVE DECKLID RELEASE...............604

13A REPAIRING 9DR DOOR CENTRAL LOCK (ARM)/UNLOCK (DISARM)

SWITCH FAILURE9 TROUBLE CODE........................608

14A REPAIRING 9PASS DOOR CENTRAL LOCK (ARM)/UNLOCK

(DISARM) SWITCH FAILURE9 TROUBLE CODE...............610

15A REPAIRING 9RKE UNABLE TO ENTER PROGRAM MODE9

TROUBLE CODE ........................................612

16A REPAIRING 9RKE PROGRAM MODE ENTERED WITHOUT

PROGRAM REQUEST9 TROUBLE CODE ....................613

17A REPAIRING 9DECKLID RELEASE SWITCH FAILURE9 TROUBLE

CODE..................................................614

18A REPAIRING 9DECKLID RELEASE SOLENOID OUTPUT FAILURE9

TROUBLE CODE ........................................616

VEHICLE COMMUNICATION

1A IDENTIFYING VEHICLE COMMUNICATION PROBLEMS........620

2A REPAIRING AIRBAG CONTROL MODULE 9NO RESPONSE9 . . . .622

3A REPAIRING AUTOMATIC TEMPERATURE CONTROL MODULE 9NO

RESPONSE9 OR 9ATC MESSAGES NOT RECEIVED9 TROUBLE

CODE..................................................628

4A REPAIRING BODY CONTROL MODULE 9NO RESPONSE9 OR

9BATTERY POWER TO MODULE DISCONNECTED9 TROUBLE

CODE..................................................632

5A REPAIRING CONTROLLER ANTI-LOCK BRAKES MODULE 9NO

RESPONSE9 ............................................638

6A REPAIRING INSTRUMENT CLUSTER MODULE 9NO

RESPONSE9 ............................................644

7A REPAIRING BLANK SCREEN OR 9NO RESPONSE9 CONDITION ON

OTIS...................................................646

8A REPAIRING POWERTRAIN CONTROL MODULE 9NO RESPONSE9

CONDITION.............................................648

9A REPAIRING RADIO 9NO RESPONSE9 CONDITION ............650

10A REPAIRING TRANSMISSION CONTROL MODULE 9NO RESPONSE9

CONDITION.............................................656

11A REPAIRING MEMORY HEATED SEAT/MIRROR MODULE 9NO

RESPONSE9 OR 9MHSMM MESSAGES NOT RECEIVED9 TROUBLE

CODE..................................................658

12A REPAIRING PCI BUS CIRCUIT SHORTED TO BATTERY .......660

viii

TABLE OF CONTENTS - Continued

13A REPAIRING PCI BUS CIRCUIT SHORTED TO GROUND........666

14A REPAIRING FUSED IGNITION SWITCH OUTPUT TO BCM......672

VEHICLE THEFT SECURITY SYSTEM 1A IDENTIFYING VEHICLE THEFT SECURITY SYSTEM

PROBLEMS.............................................676

2A DISARMING THE SYSTEM ................................678

3A REPAIRING VTSS INDICATOR LAMP STAYS ON..............680

4A REPAIRING HORN CIRCUIT ...............................684

5A REPAIRING VTSS INDICATOR LAMP DRIVER CIRCUIT ........686

WINDSHIELD WIPER SYSTEM

1A IDENTIFYING WINDSHIELD WIPER SYSTEM PROBLEMS......688

2A REPAIRING WIPER ON/OFF RELAY CONTROL CIRCUIT OPEN OR

SHORTED LOW .........................................690

3A REPAIRING WIPER PARK SWITCH FAILURE/WIPERS RUN

CONTINUOUSLY.........................................692

4A REPAIRING WIPER ON/OFF RELAY CONTROL CIRCUIT SHORTED

HIGH ..................................................696

5A REPAIRING WIPERS NOT WORKING AT ALL.................698

6A REPAIRING WIPERS NOT WORKING IN THE HIGH SPEED

MODE .................................................712

7A REPAIRING WIPERS NOT WORKING IN THE LOW SPEED

MODE .................................................716

8A REPAIRING WIPERS NOT WORKING IN THE INTERMITTENT

MODE .................................................720

9A REPAIRING WIPER WASH FUNCTION NOT WORKING

PROPERLY .............................................722

10A REPAIRING WIPERS OPERATE IN HIGH SPEED ONLY ........726

11A REPAIRING - HEADLAMP WASHERS NOT WORKING

PROPERLY .............................................730

VERIFICATION TEST

VER 1A VERIFICATION TEST - AIRBAG ............................734

VER 2A VERIFICATION TEST - BODY ..............................735

VER 3A VERIFICATION TEST - VEHICLE THEFT SECURITY SYSTEM. . .736

VER 4A VERIFICATION TEST - MEMORY SYSTEM...................737

8.0 MAINTENANCE AND SERVICE INFORMATION.............................739

8.1 REPLACING BULBS AND FUSES...................................739

9.0 SPECIFICATIONS......................................................739

9.1 SETTING THE COMPASS .........................................739

9.2 SETTING THE COMPASS VARIANCE ...............................739

TABLE OF CONTENTS - CONTINUED

10.0 SCHEMATIC DIAGRAMS................................................741

10.1 AIRBAG SYSTEM ...............................................741

10.2 BODY CONTROL MODULE........................................742

10.3 AUDIO SYSTEMS - MIDLINE ......................................743

10.3 AUDIO SYSTEMS - PREMIUM 2 ...................................744

10.4 CHIME WARNING SYSTEM .......................................744

10.5 CLIMATE CONTROL - AUTOMATIC TEMPERATURE CONTROL .........745

10.5 CLIMATE CONTROL - MANUAL TEMPERATURE CONTROL ............746

10.6 DOOR AJAR ....................................................746

10.7 EXTERIOR LIGHTING ............................................747

10.8 INSTRUMENT CLUSTER..........................................748

10.9 INTERIOR LIGHTING .............................................748

10.9 INTERIOR LIGHTING .............................................749

10.10 MEMORY SYSTEM...............................................750

10.11 OTIS...........................................................751

10.12 POWER DOOR LOCKS/RKE .......................................752

10.13 VEHICLE COMMUNICATIONS .....................................753

10.14 VEHICLE THEFT SECURITY SYSTEM...............................753

10.15 WIPER SYSTEM.................................................754

11.0 REQUIRED TOOLS AND EQUIPMENT ....................................755

12.0 GLOSSARY OF ACRONYMS ............................................755

1.0 INTRODUCTION

The procedures contained in this manual include all the specifications, instructions, and graphics needed to diagnose 1999 300M bodysystem problems. The diagnosticsin this manualare based on the failure condition or symptom being present at the time of diagnosis.

When repairs are required, refer to the appropriate service manual for the proper removal and repair procedure.

E R A

Diagnostic procedures change every year. New diagnostic systems may be added; carryover systems may be enhanced. ITIS RECOMMENDED THATYOU REVIEW THE ENTIREMANUAL TO BECOME FAMILIAR WITH ALL NEW AND CHANGED DIAGNOSTIC PROCEDURES. This manual is designed to begin all diagnosis at SYMPTOM IDENTIFICATION TEST 1A which is located at Section 7.1. If there is a trouble code detected, it will direct you to a specific test. If it is a symptom problem, it will direct you to a SYSTEM TEST 1A for more specific instructions or directly to a specific test. Side headers are used to direct alphabetically to the specific Systems. All locators views are located in Section 4.0.

This book reflects many suggested changes from readers of past issues. After using this book, if you have any comments or recommendations, please fill out the form at the back of the book and mail it back to us.

1.1 System Coverage

This diagnostic procedures manual covers all 1999 300M models.

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

F O R M A

I O N

2.0 IDENTIFICATION OF SYSTEM

The vehicle systems that are part of the 9body9 system are:

• Airbag system

• Audio

• Chimes

• Climate Control Systems (Automatic and Manual)

• Door Ajar

• Exterior Lighting

• Instrument Cluster

• Interior Lighting

• Memory System

• Overhead Travel Information System

• Power Door Locks

• Remote Keyless Entry

• Sentry Key Immobilizer

• Vehicle Communications

• Vehicle Theft Security System

• Wiper/Washer

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3.0 SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION

The body system on the 1999 300M consists ofa combination of modules that communicate over the 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 module(s).All modules receive all theinformation transmitted on thebus even though a module may not require all information to perform it’s function. It will only respond to messages 9addressed9 to it through a 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 Section 3.14 (Vehicle Communication) of this general information.

3.1 Airbag System

The Airbag Control Module (ACM) is secured to a bracket on the floor panel transmission tunnel below the instrument panel inside the vehicle. The ACM mounting bracket also serves as the instrument panel center support. The ACM contains a microprocessor, the impact sensor, and energy storage capacitor.The microprocessor contains theairbag system logic.The ACM system logic includes On-Board Diagnostics (OBD) capability, and communicates with the instrument cluster circuitry on the Programmable Communication Interface (PCI) data bus to control the airbag indicator lamp. The microprocessor in the ACM monitors the impact sensor signal and the airbag system electrical circuits to determine the system readiness. If the ACM detects a monitored system fault, it sends messages to the instrument cluster on the PCI data bus to turn on the airbag indicator lamp. A pre-programmed decision algorithm in the ACM microprocessor determines when the deceleration rate is severe enough to require airbag system protection. When the programmed conditions are met, the ACM sends an electrical signal to deploy the airbag system components. The impact sensor is an accelerometer that senses the rate of vehicle deceleration, which provides verification of the direction and severity of an impact. The impact sensor is calibrated for the specific vehicle, and is only serviced as a unit with theACM. TheACM also contains an energy-storage capacitor. This capacitor stores enough electrical energy to deploy the airbags, for one second following a battery disconnect or failure during an impact. The purpose of the capacitor is to provide airbag system protection in a severe secondary impact if the initial impact has damaged or disconnected the battery, but was not severe enough to deploy the airbags.

THE AIRBAG SYSTEM IS A SENSITIVE, COMPLEX ELECTROMECHANICAL UNIT. BEFORE ATTEMPTING TO DIAGNOSE OR SERVICEANYAIRBAG SYSTEM OR RELATEDSTEERING 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 THEAIRBAG SYSTEM. FAILURE TO DO THIS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY. 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 ACCIDENTALLYDROPPED DURING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT.

The airbag warning lamp is the only point at which the customer can observe 9symptoms9 of a system malfunction. Whenever the ignition key is turned to the 9run9 or 9start9 position, the MIC performs a lamp check by turning the AIRBAG warning lamp on for 6-8 seconds. If the lamp remains off, it means that the ACM 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 to ground. 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.

Perform the WARNING LAMP BULB OR DRIVER procedure in this book to find the cause of any customer complaint regarding the AIRBAG warning lamp, such as:

• warning lamp does not illuminate

• warning lamp stays illuminated with no active DTC’s

The ACM cannot be repaired or adjusted and, if damaged or faulty, it must be replaced.

Driver Airbag Module (DAB)

The airbag protective trim cover is the most visible part of the driver side airbag system. 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. The airbag module includes a housing to which the cushion and inflator are attached and sealed. The airbag module cannot be repaired, and must be replaced if deployed or in any way damaged. The inflator assembly is mounted to the back of the airbag module. The inflator seals the hole in the airbag cushion so it can discharge the gas it produces directly into the cushion when supplied with the proper electrical signal. 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. Upon airbag deployment, this cover will split at a predetermined breakout line.

THE AIRBAG MODULE INFLATOR ASSEMBLY CONTAINS SODIUM AZIDE AND POTASSIUM NITRATE. THESE MATERIALS ARE POISONOUS AND EXTREMELY FLAMMABLE. CONTACT WITH ACID, WATER, OR HEAVY METALS MAY PRODUCE HARMFUL AND IRRITATING GASES (SODIUM HYDROXIDE IS FORMED IN THE PRESENCE OF MOISTURE) OR COMBUSTIBLE COMPOUNDS. DO NOT PUNCTURE, INCINERATE, OR BRING INTO CONTACT WITH ELECTRICITY. DO NOT STORE AT TEMPERATURE EXCEEDING 93°C (200°F).

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Clockspring

The clockspring is mounted on the steering column behind 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 wire harness and the driver side airbag module, the horn switch, and the vehicle speed controlswitches on vehicles that are soequipped. The clockspring must be properly centered when it is installed on the steering column following any service removal, or it will be damaged. The clockspring cannot be repaired it must be replaced.

Passenger Airbag Module (PAB) The airbag door in the instrument panel top cover above the glove box is the most visible part of

the passenger side airbag system. Located under the airbag door is the airbag cushion and it’s supporting components. The airbag module includes a housing to which the cushion and inflator are attached and sealed. The airbag module cannot be repaired, and must be replaced if deployed or in any way damaged. The inflator assembly is mounted to the back of the airbag module. The inflator includes a small canister of highly compressed argon gas. The inflator seals the hole in the airbag cushion so it can discharge the compressed gas it contains directly into the cushion when supplied with the proper electrical signal. The airbag door has a living hinge at the top, which is secured to the instrument panel top cover. The door also has predetermined breakout lines concealed beneath its decorative cover. Upon airbag deployment, the airbag door will split at the breakout lines and the door will pivot out of the way.

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THE PASSENGER AIRBAG MODULE CONTAINS ARGON GAS PRESSURIZED TO OVER 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 CHRYSLER 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 CHRYSLER MOPAR PARTS CATALOG.

3.1.1 Airbag 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 using the DRB. The procedure begins with AIRBAG TEST 1A - IdentifyingAirbag System Problems. This will direct you to the specific test(s) that must be performed.

Active diagnostic trouble codes for the airbag system are not permanent and will change the moment the reason for the code is corrected. In certain test procedures within this manual, diagnostic trouble codes are used as a diagnostic tool.

3.1.2 Active Codes

The code becomes active as soon as the malfunction is detected or key-off, whichever occurs first. An active trouble code indicates an on-going malfunction. This means that the defect is currently there every time the airbag control module checks that circuit/function. It is impossible to erase an active code; active codes automatically erase by themselves when the reason for the code has been 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.

3.1.3 Stored Codes

Airbag codes are automatically stored in the ACM’s memory as soon as the malfunction is detected. The exception is the 9Loss of Ignition Run Only9 code which is an active code only.

A 9stored9 code indicates there was an active code present at some time. However, the code currently may not be present as an active code, although another active code could be.

When a trouble code occurs, the airbag warning lamp illuminates for 12 seconds minimum (even if the problem existed for less than 12 seconds). The code is stored, along with the time in minutes it was active, and the number of times the ignition has been cycled since the problem was last detected.

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 as long as the malfunction exists. 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. If the malfunction reoccurs before the count reaches 100, then the ignition cycle counter will be reset and the diagnostic trouble code will continue to be a stored code.

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.

If no obvious problems are found, erase stored codes, and with the ignition 9on9 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.

3.2 Audio System

There are three radio systems available that communicate on the PCI bus. They are RBR, RBN, and RAZ models. They use the bus for two reasons. First is to communicate trouble codes to the body control module, the second is for use with the driver memory selection system. The radio stores two sets of station presets and can be recalled by pressing the optional memory select button (located on the drivers door). The RBR will have 6 speakers and a 120 watt external amplifier. The RBN will have 7 speakers and a 240 watt external amplifier. The RAZ will have 9 speakers and a 320 watt external amplifier. Depending on the manufacturer, some systems have a Front/Rear channel system and others have a Left/Right channel system.

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3.3 Auto Headlamps

The headlamps and park/tail lamps will be activated by the BCM when the headlamp switch is in the auto mode. To activate the auto headlamps the BCM requires that: (1) the headlamp switch is in the ‘‘A’’ position, (2) the engine is running, and (3) the light level sensed through the sun load sensor falls below the calibrated level.

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 (the Programmable Communication Interface or PCI bus). This network consists of the powertrain control module (PCM), the memory heat seat/mirror module (MHSMM), sentry key immobilizer module (SKIM), the transmission control module (TCM), the electro/mechanical instrument cluster (MIC), the radio, the optional overhead travel information system (OTIS), airbag control module (ACM), optional antilock brakes (ABS) and the optional automatic temperature control (ATC) display head. The BCM is operational when battery power is supplied tothe module, ignition switch power isneeded for ignition switched functions.

The body control module provides the following features: Automatic headlamp and foglamp

A/C switch status / evaporator temperature status BCM diagnostic support Central lock and unlock (VTSS only)

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Climate Control (Automatic and Manual) system support Door ajar switch status Door Lock Inhibit (key in ignition or headlamps/park lamps on) Electronic Odometer Support Fog Lamp Control Headlamp multiplexing control Headlamp, Park & tail lamps with battery save feature Headlamp Time Delay Illuminated Entry with 9fade to off9 Interior lighting with battery save feature Mechanical Instrument Cluster (fuel level, dim data, odometer & warning chime) support Memory system Overhead travel information system Power door lock multiplexing control Rear Window Defogger Control Remote Keyless Entry with Panic Mode Remote power decklid release Rolling door lock control (customer programmable) Sentry key immobilizer Vehicle Theft Security System Wiper Control (speed sensitive with return to park)

The BCM receives information over the PCI Bus from the PCM in order to support certain features. The required information is as follows:

• Engine RPM

• Engine Temperature

• Injector on Time and Distance Pulses

• Vehicle Speed

• Charging System Failure, Engine Temperature Limp-In, VTSS Arming Status

• Engine Model

• 9Check Engine9 lamp status

The BCM provides the PCM with information on the A/C switch status, battery temperature which is determined by the ambient temperature sensor and the 9OK to Start9 or VTSS status.

The 1999 300M has several customer programmable features which can be disabled or enabled by the customer.

FEATURE DEFAULT PROGRAMMING METHOD FEEDBACK

Rolling Door Locks

Enabled Close all doors BCM provides a sin-

gle chime to indicate completion of the programming

Place vehicle key in the ignition and cycle between off and run four times ending in the off position

RKE — Horn Chirp

Customer depresses the driver power door lock switch to lock the doors

Body Controller will toggle the enable/ disable state of rolling locks

Enabled Continually press the lock button for a

minimum of 4 seconds to a maximum of 10 seconds

None

FEATURE DEFAULT PROGRAMMING METHOD FEEDBACK

Within the 4-10 second range, press the unlock button while continuing to press the lock button

Release both buttons Body Controller will toggle on/off state

of horn chirp feature

RKE — Rear Release Toggle

Press Twice

Continually press the unlock button for a minimum of 4 seconds to a maximum of 10 seconds

Within the 4-10 second range, press the rear release button while continuing to press the unlock button

Release both buttons RKE will toggle state of one press/two

press rear release

None

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RKE — Program New FOB (Using an already programmed FOB)

Not Applicable

Turn vehicle ignition switch on. With programmed FOB continually press the unlock button for a minimum of 4 seconds to a maximum of 10 seconds

Within the 4-10 second range, press the panic button while continuing to press the unlock button

Release both buttons Press any button of FOB(S) to be

learned. (Note: RKE system erases all FOBs when program mode is entered so any existing FOBs must also be programmed.

BCM will sound the chime when programming mode is started

BCM will sound a second chime after each FOB has been learned, a 32 second time out period has elapsed, or the vehicle ignition has been turned off

Turn off ignition or wait for 32 seconds to exit programming mode

3.5 Chime System

The chime system is comprised of an audible chime located internal to the BCM; and is dependent on various inputs to the BCM to operate. These inputs include key-in ignition switch, exterior lamps, seat belt switch, and requests from the MIC to chime when some indicators are turned on.

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3.6 Climate Control Systems

3.6.1 Automatic Temperature Control (ATC)

The body control module (BCM) provides automatic temperature control support both through PCI bus communications and through processing inputs to determine control for actuators and the blower motor. The BCM interfaces with the ATC control head over the PCI bus. Information on button activation, blower setting, and temperature setting are supplied to the BCM. In turn, the BCM supplies the ATC control head with mode information and indication lamp status. The BCM controls blower motor speed by providing a varying duty cycle of a fixed frequency output (pulse width modulation). There are 14 distinct blower speeds, plus a blower off signal.The body control module also controls the HVAC mode, temperature (blend air), and recirculation doors. This system is either fully automatic or fully manual control (no semi-automatic functions); however,the temperature blend door control is always automatically controlled based on sensor reading and comfort setting. The in-car sensor and the aspirator motor are now housed in the ATC control head.

3.6.2 Manual Temperature Control

The body control module interfaces with the a/c-heater control head via hardwired circuits. Information for the temperature setting issupplied to the bodycontrol module viaa potentiometer. The rear defogger switch, A/C switch and the mode setting is supplied via a resistive multiplexed circuit. The system on/off status is supplied by a dedicated circuit. The BCM drives the A/C and rear defogger indicator lamps via hardwire to the A/C-heater control head.

3.6.3 HVAC Blend, Mode, and Recirculation Door Operation

The trouble codes that indicate a stall failure or a feedback signal failure work together to show what is wrong with the HVAC system. The stall trouble codes mean that the body control module cannot force an actuator to the end of the HVAC unit door. Internal problems in the body control module will set other short- related codes. Having only stall trouble codes indicates that there is a problem with an open or short circuit in the wiring, a bad actuator, a bad HVAC unit door or connecting linkage. It is important that the operation of the HVAC door be checked if an actuator is removed. This can be checked by rotating each unit door shaft to confirm that the door will stop at both ends of travel. The actuator itself has no stops. It must have the HVAC unit door to stop travel to pass a stall test.

Afeedback signal failurecan occur on the blend or modedoor. The bodycontrol modulemonitors the feedback signal to check the position of the actuator.The body control module not onlychecks the level of the signal but also how much the voltage changes.

A feedback failure can occur if there is a short or open circuit in the wiring, a bad actuator, a bad body control module, a bad HVAC unit door or connecting linkage. The easiest way to diagnose this is to use the DRB to actuate the blend or mode door. Note that the feedback voltage of the actuator should smoothly change as the actuator is moved. A sudden change in the feedback voltage to a 5.0-volt or a 0.0-volt level indicates the actuator is bad. A fixed feedback voltage that is less than 5.0 volts or greater than 0.0 volts without a stallfailure, ora short failure indicates that the actuator, the HVAC unit door, or a connecting mechanical linkage is jammed thereby preventing movement. A feedback signal voltage that stays on 5.0 volts or 0.0 volts indicates a wiring or body control module problem. The feedback voltage should always beless than 5.0 volts and greater than 0.0 volts.

The feedback trouble code can also occur from lack of actuator travel. This can be checked by confirming that the feedback signal smoothly changes when the actuator is moved with the DRB. If the signal is OK, the door travel is not correct. The actuator must be removed and the HVACunit door mechanically checked for proper operation. Typical problems that prevent door movement include screws dropped in the HVAC unit or warped doors. Replace any part that is found defective.

3.6.4 Rear Window Defogger

When the BCM receives a rear defogger request from the climate control head (either ATC or manual) the BCM will activate the rearwindow defogger relay for 15minutes. If the BCM receives another rear defogger request while the relay is still activated, the relay will be de-activated. If the relay is allowed to time out (full 15 minutes), further requests during the same ignition on period will cause the BCM to activate the relay for 7.5 minutes.

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3.7 Exterior Lighting System

3.7.1 Exterior Lighting Battery Saver

The BCM monitors the status of and controls the park lamp, head lamp and fog lamp relay’s. If any exterior lamps are left on after the ignition is turned off, the BCM will turn the headlamps and fog lamps off after 10 minutes, the park lamps will remain on.

3.7.2 Headlamp Delay

The headlamp time delay operates when the ignition switch is turned off while the headlamps are still on, and the headlamps are then turned off within 45 seconds after the ignition is off. This will provide a 90-second time delay before turning off the headlamps.

3.7.3 Headlamp Switch

The headlight switch on300M vehicles use a multiplexed (MUX) circuit to the BCM.The BCM will then control the park lamp, head lamp and fog lamp relay’s based on this input.

3.7.4 Fog Lamp Control

The body control module controls the operation of the fog lamp relay which controls the fog lamps. The fog lamps can only be on if the park or low beam headlamps are on. If the high beams are turned on, the fog lamps will remain on.

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3.8 Interior Lighting

3.8.1 Courtesy Lamp Control

The body controller has direct control over the majority of the vehicle’s courtesy lamps. The body computer will illuminate the courtesy lamps under any of the following conditions:

1) Any door is ajar.

2) The courtesy lamp switch on the instrument panel is closed.

3) A Remote Keyless entry unlock message is received. If the interior lamps are left on after the ignition is turned off, the BCM will turn them off after 1 hour or until either the dome lamp switch or door ajar switch changes state.

3.8.2 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.

3.9 Mechanical Instrument Cluster

The instrument cluster displays four gauges, a vacuum fluorescent (VF) odometer, a VF PRNDL and up to (18) indicators. One reset button is used to switch the display from trip to total. Holding

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the button when the displayis in thetrip mode willreset the trip mileage. The clusteralso supplies the power for the panel illumination. Most of the information that is displayed is received over the PCI bus from several modules.

With ignition in 9lock9, the cluster will wake up and display the door ajar and odometer display when a door is opened. The cluster will also wake up to control the panel illumination. In 9off9 (unlock) the PRNDL and several indicators will be functional but all gauges will not function. On transition from 9off9 (unlock) to run, the cluster will perform a check of all micro-controlled indicators, the odometer and the PRNDL for approx. 2 seconds. Other bulb checks with longer bulb check durations will beperformed based onbus messages fromother modules. If the cluster receives no PCI bus messages for (20) seconds after the transition to 9run9, the cluster will display 9no bus9 in the odometer.

A self test can be initiated by holding down the odometer reset button and switching the ignition from 9lock9 to 9off9 (unlock). This test will activate the gauges, turn on the indicator lights along with the odometer and PRNDL segments.

3.10 Memory System

The memory system consists of power left front seat, power mirrors and radio presets. The memory heated seat/mirror module (MHSMM) also includes the heated seat function. The module is located under the leftfront seat andreceives input from:left manual 8-way seat switch,left seat position sensors, memory switch, both heated seat switches, both heated seat negative temperature coefficients ((NTC’s) thermistors), PCI bus ckt, and the power mirror sensors. The module uses these inputs to perform the following functions: position the left front seat, position drivers memory seat and mirrors, actuatethe drivers and passengerheated seat heaterand send the memory location over the PCI bus.

When a memory button is pressed (either #1 or #2) on the memory switch the MHSMM sends a message to the BCM which in turn sends a recall message to the MHSMM and the PCI radio. They will in turn position the left seat and both mirrors along with setting the radio presets.

3.10.1 Power Seat

The memory power seat provides the driver with 2 position settings for the left seat. Each power seat motor is connected to the MHSMMwith two circuits.Each circuit is switchedbetween battery and ground. By alternating the circuits the MHSMM controls the movement of the motors based on input from the seat mounted switch.

Each motor contains a potentiometer to monitor the seat position. To monitor the position of the motor, the MHSMM 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 MHSMM monitors the voltage change through the sensor on a separate signal circuit.

The MHSMM stores the input value of each of the four seat potentiometers in memory when the system is requested. The driver can initiate memory recall, using either the seat mounted memory switch or the RKE transmitter. When initiated, the MHSMM adjusts the four seat motors to match the memorized seat position data.

For safety, the memory seat recall is disabled by the MHSMM when the vehicle is out of park position. Any obstruction to seat movement over a 2 second delay will cause the seat to stop moving in which case a stalled motor would be detected by the MHSMM which would then flag a trouble code and the corresponding seat output would be deactivated. However, if the object obstructing the seat is removed, the seat will function normally again.

3.10.2 Memory Seat Glide

The intent of this feature is to allow for easier entry and exit to the vehicle by moving the seat rearward a short distance when the operator turns the ignition off. The seat returns to its original position when the operator returns and turns on the ignition or extends the seat belt. If any seat movement is initiated, whether manual or by memory recall, after the ignition has been turned off, that will cancel any ensuing glide to enter movement until the next ignition cycle.

This feature can be enabled/disabled by the owner by holding the memory set button and simultaneously pressing the horizontal rearward switch. To reinstate the feature, repeat the process. This can also be done using the DRB which will also inform as to which state it is in.

3.10.3 Guard Bands

The module provides guard bands which prevent the seat track from hitting the hard limits of the given seat axis during manual power seat operation. The guard band values for each hard limit are stored in EEPROM. The guard band can be bypassed by running the seat to the end of its travel and then releasing the switch and pressing it again. The seat will move a short distance further. Once the seat is past the guard band it can be stored in memory, but if recall is initiated the seat will move to the guard bands and no further.

3.10.4 Memory Mirrors

Each outside mirror has a vertical and a horizontal position sensor. The MHSMM providesa 5-volt reference to each position sensor. The sensors share a common ground circuit. The MHSMM monitors the position of the mirrors by measuring the voltage of each signal. When a memory position is set, the MHSMM monitors and stores the position of the outside mirrors. The MHSMM adjusts the mirrors to the appropriate positions when a memory recall message is received from the RKE or is requested from the memory switch.

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The power mirror switch during non-memory operation operates both mirrors independently of the MHSMM.

3.10.5 Heated Seats

The controls for the heated seatsare located onthe side ofeach seat. The system offerstwo seat temperature settings of approximately 37°C (98.6°F) (LO) and approximately 42°C (107.6°F) (HI).

As the temperature in the seat rises, the Negative Temperature Coefficient (NTC) resistance decreases and the voltage reading detected by the MHSMM increases. The seat heater output is deactivated once the voltage reading reaches it’s upper threshold for either setting, high or low.

As the temperature decreases, the voltage reading decreasesuntil the lower thresholdis reached for either setting high or low. At this point the seat heat output is activated once again and this cycle repeats itself as long as the seat heat request is on.The thresholds for low and high settings are pre-programmed into the MHSMM memory.

The heated seat switch contain resistors pulled up to ignition which are processed by the MHSMM as voltage readings indicating desired heat setting high or low.

3.11 Overhead Travel Information System (OTIS)/Homelink

The overhead travel information system (OTIS) gives the driver information that supplements the primary gauge instrumentation. OTIS displays this information on a vacuum fluorescent display (VFD). The OTISmodule has fourswitch inputs. The buttons forthese switches areintegral to the OTIS housing. There are two buttons on each side of the OTIS. The buttons are labeled US/M, C/T, STEP, and RESET. The driver selects and resets display functions through the use of these four buttons. The OTIS will display these functions:

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Compass/Temperature AVE ECO Average Fuel Economy ECO Instantaneous Fuel Economy DTE Distance to Empty ET Elapsed Time ODO Trip Odometer

If the vehicle is equipped with the optional Homelink feature, the OTIS will have three buttons located in the center of theOTIS module. The OTISmodule receives allof its information overthe PCI bus except compass, which is internal to the OTIS module. The OTIS powers up when it recognizes vehicle voltage on the ignition input circuit. OTIS blanks the display, then illuminates all segments of the VFD. It then blanks the display again. During this time, the OTIS sends and receives information over the PCI bus to determine what to display after the two-second initialization. The OTIS displays dashes (- - -) for any of the screens for which it did not receive bus messages during the two-second initialization. These dashes will be replaced by valid information if and when it is received from the bus.

3.12 Power Door Lock System

The door lock switches provide a variable amount of voltage through the multiplexed (MUX) circuit to the BCM. Depending upon that input and various conditions that must be met (i.e. door lock inhibit, etc.), the BCM will determine the action to be taken and activate the proper relay for approximately 250 to 350 msec. If the vehicle is equipped with the vehicle theft security system it will have the central lockingfeature which locks andunlocks all doorsfrom the doorkey cylinder switches. These switches are on separate multiplexed circuits to the BCMand have trouble codes relating to each of them.

RKE Remote Keyless Entry - This feature allows locking and unlocking of the vehicle door(s) by remote control using a hand-held transmitter (sometimes referred to as a fob) to activate a radio receiver (RKE module). This module now plugs into the body control module which is directly connected to the junction block. With this feature RKE can now be added to a non-equipped vehicle by installing a module. If the vehicle is equipped with the vehicle theft security system, RKE will also arm and disarm that system. A new 4-button transmitter is used this year which will provide lock, unlock, decklid release and panic features. Decklid release is only operable while the vehicle is in the park position. The module is capable of retaining up to 4 transmitter codes. Rolling code, which increases security, has been added this year. If the transmitter goes out of synchronization it is easily put back in by pressing the lock button when the transmitter is within range.An external antenna has been added which plugs into the module to provide greater range. RKE will also turn on the interior lamps when a valid unlock command is received and will extinguish the interior lamps when a lock command is received and all doors are closed.

On a vehicle equipped with the memory system, when the unlock button on a specified transmitter (either #1 or #2) is pressed the BCM will send a recall message to both the MHSMM and the PCI radio. They will in turn position the left seat and both mirrors along with setting the radio presets.

Door Lock Inhibit - When the key is in the ignition and the left front door is open, all door lock switches are disabled. The unlock switches are still functional. This protects against locking the vehicle with the keys still in the ignition.

Automatic (rolling) Door Locks - This feature can be enabled or disabled by using either the DRB or the customer programmable method. When enabled, all doors will lock when the vehicle reaches a speed of 24 KMH (15 MPH) and all doors are closed. If a door is opened and the vehicle slows to below 24 KMH (15 MPH), the locks will operate again once all doors are closed and the speed is above 24 KMH (15 MPH).

Decklid Release - Decklid release is now a function of the body control module. Trouble codes are provided to assist in the diagnosis of this system.

Customer programmable features are: Horn chirp, one or two press decklid release, programming a new transmitter (using a previously programmed transmitter) and rolling door locks.

3.13 Sentry Key Immobilizer System (SKIS)

The SKIS is an immobilizer system designed to prevent unauthorized vehicle operation. The system consists of a Sentry Key Immobilizer Module (SKIM) and ignition key(s) called Sentry Key(s) which are equipped with a transponder chip. The SKIM communicates over the Programmable Communication Interface multiplex system (PCI) bus network to the Body Control Module (BCM), Powertrain Control Module (PCM), and/or the DRB scan tool.

The SKIM sends messages to the Body Control Module (BCM) over the PCI bus to control the VTSS indicator lamp.The SKIM sends a message to the BCM to turn the lamp on for about three seconds when the ignition is turned to the Run/Start position as a bulb test. If the indicator lamp comes on and stays on after the bulb test, it indicates that the SKIM has detected a system malfunction and/or that the SKIS has become inoperative. If an invalid key is detected in the ignition key cylinder with the ignition switchin the Run/Start position,the SKIM will flashthe VTSS indicator lamp on and off.

For additional information on the SKIS, refer to the Powertrain Diagnostic Procedures manual.

3.14 Vehicle Communication

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The Chrysler Programmable Communication Interface multiplex system (PCI bus) consists of a single wire. The Body Control Module (BCM) acts as a splice to connect each module and the Data Link Connector (DLC) together. Each module is wired in parallel to the data bus through its PCI chip set and uses its local ground as the bus reference. The wiring is a minimum 20 gage. The PCI bus wire insulation color will be yellow with a violet tracer. An extra tracer color may be added along with the violet to help distinguish between different node connections.

The bus is designed tohandle a maximum number ofnodes to meet all ofthe bus loadand timing requirements. The bus resistance and capacitance is designed to provide a maximum level of filtering without distorting the bus symbols. This is why extra capacitance and resistance should not be added to the PCI Data Bus circuitry.

In order for an electronic control module to communicate on the PCI data bus, the module must have bus interface electronics consisting of a transmitter/receiver (or transceiver) and Logic control, bus termination for loading and filtering the bus, and wiring which interconnects the system.

Because of the unique coding scheme used in thePCI bus, each module is required tohave logic control. The data moving on the bus is called symbols. The interface logic performs the following functions: encode and decodes binary data into symbols, synchronizes all bus symbol timing and edges, controls the sending and receiving of messages, monitors for bus arbitration, monitors for corrupted symbols due to noise and controls the transceiver.

The bus logic control also provides the transceiver with the information it needs to transmit symbols on the bus. Thetransceiver controls the waveshaping of each symbol that ittransmits by using internal voltage controlled current drivers. When the bus transceiver is turned on, the bus driver ramps up the voltage to the set range and maintains this voltage until the driver is turned off, at which time the voltage is ramped back down to the low voltage, ground. The transceiver is design to allow for arbitration between modules. If more than one module is trying to access the PCI bus at one time, the code determines the message that has the higher priority, and is then allowed to access the bus first.

The PCI bus requires a resistance and capacitance termination load to ground to operate. Because each bus transceiver can only source current to the bus, the resistance load is required

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to sink this current and pull the bus to ground on the falling edge of the symbols. The bus resistance is minimum of 315 ohms to a maximum of 2 K ohms. The termination capacitance is required for noise filtering and to help in the symbol wave shaping. The bus capacitance shall not be greater then 12,000 pf.

Each module on the PCI bus has a small termination load of a parallel resistance and capacitor to make up part of the over all bus termination load. One or two modules on the PCI bus may have a higher load termination to provide stabilizing influence over the variations of vehicle builds. These modules, called dominant modules, may very from car line to car line. The Powertrain Control Module (PCM) is the only dominant node for this vehicle.

NOTE: Communication over the bus is essential to the proper operation of the vehicles on-board diagnostic systems and the DRB. Problems with the operation of the bus or DRB must be corrected before proceeding with diagnostic testing. If there is a problem, refer to the Vehicle Communications section of this manual.

3.14.1 Bus Failure Message

Odometer Displays 9No Bus9 - The Mechanical Instrument Cluster (MIC) cannot communicate over the bus and does not know why.

3.15 Vehicle Theft Security System

This passive system isdesigned toprotect against vehicle theft.The vehicle theft security system (VTSS) is part of the body control module, which monitors vehicle doors and the ignition for unauthorized operation. The alarm activates by sounding the horn, flashing the headlamps, park and tail lamps, and the VTSS indicator lamp. Passive arming occurs upon normal vehicle exit by turning the ignition off, opening the driver’s door, locking the doors with the power lock, and closing the driver’s door or locking the doors with RKE. Manual arming occurs by using the key to lock the doors after closing them. The indicator lamp on the dash will flash for 15 seconds, showing that arming is in progress. If no monitored systems are activated during this period, the system will arm and the indicator will flash at a slow rate. If the indicator lamp remains steadily lit during the arming process, this can indicate a possible loss of communication with the PCM or loss of trunk knock out switch. When something triggers the alarm, the system will signal the headlamps, park lamps, and horn for about 3 minutes.

For complaints about the Theft Alarm going off on it’s own use the DRB and select 9Theft Alarm9 then 9Monitor Display9 and read the 9Alarm Tripped By9 status.

Tamper Alert - The VTSS indicator lamp will flash twice quickly to indicate a tamper condition has occurred.

Manual Override - The system will not arm if the doors are locked using the manual lock control (by hand) or if the locks are actuated by an inside occupant after the door is closed.

To verify the system, proceed as follows:

1. Open the driver’s door.

2. Remove the ignition key (but keep it in hand).

3. Lock the doors with the power lock switch or the RKE.

4. Close the driver’s door.

NOTE: After the doors are closed, locking the doors with RKE will also arm the system. NOTE: If the VTSS indicator lamp flashed, the system is operational and verified. If not, there may

be a problem with the system.

Arming/Disarming - Active arming occurs when the remote keyless entry transmitter is used to lock the vehicle doors, whether the doors are open or closed. If one or more doors are open, the arming sequence is completed only after all doors are closed.

Passive disarming occurs upon normal vehicle entry (unlocking either front door with the key). This disarming also will halt the alarm once it has been activated.

Active disarming occurs when the remote keyless entry transmitter is used to unlock the vehicle doors. This disarming also will halt the alarm once it has been activated.

System Self-Tests - NOTE: System self-tests can be entered only with the DRB. See vehicle theft section system test 1A.

NOTE: Apowertrain 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 possibly has been lost.

3.16 Wiper System

The wiper system provides the driver with the normal wiper (low and high speeds), intermittent wipe, wipe after wash, headlamp washers and pulse wipe functions. The driver selects the wiper function via the resistive multiplexed stalk switch mountedon the steering column.The BCM uses input signal from the stalk switch, wiper motor park switch and the washer switch to control the wipe system. The Body Control Module (BCM) then controls the relays and timing functions to provide the driver selected features.

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3.16.1 System Features

Speed Sensitive Intermittent Wipe Mode There are 6 individual delay times with a minimum delay of 1/2 second to a maximum of 18 seconds. When the vehicle speed is under 6 KMH (10 MPH), the delay time is doubled providing a range of 1 second to 36 seconds.

Pulse Wipe The wiper is in the off position and the driver presses the wash button for more than 62 milliseconds, but less than 1/2 second, 2 wipe cycle in low speed mode will be provided.

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.

Wipe after Wash When the driver presses the wash button for over 1/2 second and then releases it, the wiper will continue to run for 2 additional wipe cycles.

Headlamp Washers The BCM will actuate the headlamp washer relay output for 750ms whenever the windshield washer are activated and the headlamps are on.The headlamp washers will be activated only for 750ms and then turned off even if the wash switch remains pressed. The headlamp washers will then be disabled until the wash switch is released and inactive for 5 continuous seconds. The headlamp washers will not be activated when the wiper pulse wipe mode is used.

The wiper system utilizes the BCM to control the on/off and hi/low relays for low and hi speed wiper functions, intermittent wiper delay as the switch position changes, pulse wipe, wipe after wash mode, and wiper motor park functions.The BCM usesthe vehicle speed input to double the usual delay time below 6 KMH (10 MPH) There are three diagnostic trouble codes associated with

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the wiper system. Two codes are set based on the condition of the on/off relay control wire open, shorted to ground or shorted to battery. The third code will set if the wiper motor park switch fails to open and close.

3.17 Diagnostic Trouble Codes Information

3.17.1 Airbag Trouble Codes

The airbag control module may report any of the following diagnostic trouble codes. For the following codes, replace the airbag control module (ACM) even if set intermittently:

ACM ACCELEROMETER ACM INTERNAL DIAGNOSTIC CODE #2 ACM FIRING STORED ENERGY CODE ACM INTERNAL DIAGNOSTIC CODE #1

For these codes, refer to the appropriate diagnostic procedure:

Cluster Message Mismatch Driver Squib Circuit Open Driver Squib Circuit Shorted Driver Squib Circuit Shorted to Battery Driver Squib Circuit Shorted to Ground Loss of Ignition Run Only Loss of Ignition Run/Start No Cluster Message No Cluster IFR Communication No PCI Communication Passenger Squib Circuit Open Passenger Squib Circuit Shorted Passenger Squib Circuit Shorted to Battery Passenger Squib Circuit Shorted to Ground Power Stage Not Tested Warning Lamp open/shorted

ACM OUTPUT DRIVER

3.17.2 Audio Trouble Codes

Radio Error CD Error Cass Error Shorted Front Channel Shorted Rear Channel Shorted Left Channel Shorted Right Channel

3.17.3 Body Control Module Diagnostic Trouble Codes

ABS Bus Communication Failure A/C Control A/C Switch Failure A/C Control Blend Door Input Open Or Shorted to ground A/C Control Blend Door Input Shorted to Battery A/C Control EBL Switch Failure A/C Control Mode Door Input Open Or Shorted to Battery A/C Control Mode Door Input Shorted to Ground ATC Messages Not Received ATC Switch Failure Airbag Bus Communication Failure Ambient Temperature Sensor Failure

BCM Bus Communication Failure Battery Power to Module Disconnected Blend Door Feedback Failure Blend Door Output Shorted to Battery Blend Door Output Shorted to Ground Blend Door Stall Test Failure Bus Shorted to Battery Bus Shorted to Ground Common Output Shorted to Battery Common Output Shorted to Ground Courtesy Lamp Output Short to Battery Decklid Release Solenoid Output Failure Decklid Release Switch Failure Dimming Level Switch Input Failure Dr Door Central Lock (arm)/Unlock (disarm) Switch Failure EATX Bus Communication Failure EEPROM Constant Checksum Failure Evaporator Temperature Sensor Failure Fuel Level Sending Unit Failure Headlamp Switch Input Failure I/P Illumination Failure In-Car Temperature Sensor Failure Internal Base/Premium Select Failure MIC Messages Not Received Mode Door Feedback Failure Mode Door Output Shorted to Battery Mode Door Output Shorted to Ground Mode Door Stall Test Failure OTIS Messages Not Received Pass Door Central lock(arm)/unlock (disarm) Switch Failure Post Failure RKE Program Mode Entered Without Program Request RKE Unable to Enter Program Mode Recirc Door Output Shorted to Battery Recirc Door Output Shorted to Ground Recirculation Door Test Failure SBEC Bus Communication Failure Sun Load Sensor Failure Wiper On/Off Relay Output Short High Wiper On/Off Relay Output Open or Short Low Wiper Park Switch Failure

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3.17.4 Instrument Cluster DTC’s

ABS Bus Communication Failure Airbag Bus Communication Failure BCM Bus Communication Failure EATX Bus Communication Failure SBEC Bus Communication Failure

3.17.5 Memory Heated Seat Mirror Module

EEPROM Refresh Failure Front Riser Sensor Out of Range High Front Riser Sensor Out of Range Low Front Riser Down Position Stuck

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Front Riser Up Position Stuck Horizontal Sensor Out of Range High Horizontal Forward Position Stuck Horizontal Sensor Out of Range Low Horizontal Rearward Position Stuck Ignition Status Message Not Received Left Thermistor Out of Range High Left Thermistor Out of Range Low Left Heated Seat Switch Open/Shorted to Ground Left Heated Seat Switch Stuck in High State Left Heated Seat Switch Stuck in Low State Left Mirror Veritcal Sensor Out of Range High Left Mirror Vertical Sensor Out of Range Low Left Mirror Horizontal Sensor Out of Range High Left Mirror Horizontal Sensor Out of Range Low Left Seat Heat Output Shorted to Ground Left Seat Heat Output Open Memory Set ‘‘S’’ Position Stuck Memory Position #2 Stuck Memory Position #1 Stuck PRNDL Display Message Not Received Rear Riser Down Position Stuck Rear Riser Up Position Stuck Rear Riser Sensor Out of Range Low Rear Riser Sensor Out of Range High Recliner Down Position Stuck Recliner Up Position Stuck Recliner Sensor Out of Range Low Recliner Sensor Out of Range High Right Heated Seat Switch Open/Shorted to Ground Right Thermistor Out of Range Low Right Thermistor Out of Range High Right Heated Seat Switch Stuck in High State Right Heated Seat Switch Stuck in Low State Right Seat Heat Output Shorted to Ground Right Seat Heat Output Open Right Mirror Horizontal Sensor Out of Range Low Right Mirror Horizontal Sensor Out of Range High Right Mirror Vertical Sensor Out of Range Low Right Mirror Vertical Sensor Out of Range High

3.18 Using the DRBIIIT

Refer to the DRB user guide for instructions and assistance with reading trouble codes, erasing trouble codes, and other DRB functions.

3.19 DRBIIIT Error Messages

Under normal operation, the DRB will display one of only two error messages:

- User-requested WARM Boot or User -Requested COLD Boot

This is a sample of such an error message display:

ver: 2.14 date: 26 Jul93 file: key_itf.cc date: Jul 26 1993 line: 548 err: 0x1 User-Requested COLD boot

Press MORE to switch between this display

and the application screen.

Press F4 when done noting information.

3.20 DRBIIIT Does Not Power Up

If the LED’s do not light or no sound is emitted at start up, check for loose cable connections or a bad cable. If all connections are proper between the DRB and the vehicle or other devices, and the vehicle battery is fully charged, see vehicle communication test 1A.

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3.21 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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NOTES

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