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2001 RS/RG Technical Publications
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Page 2
SERVICE MANUAL
2001
VOYAGER
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.
Copyright © DaimlerChrysler Corporation
81-726-1042CD
Page 3
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 to the following page. The
first page of the group has a contents section that lists major topics within the group.
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.
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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 AIRBAG SYSTEM/OCCUPANT RESTRAINT CONTROLLER SYSTEM ........2
3.1.1 DRIVER AIRBAG...........................................3
3.1.2 CLOCKSPRING............................................4
3.1.3 PASSENGER AIRBAG ......................................4
3.1.4 SEAT BELT TENSIONER (SBT)...............................5
3.1.5 SEAT BELT SWITCHES (SBS)................................5
3.1.6 SIDE IMPACT AIRBAG CONTROL MODULE (SIACM) ............5
3.1.7 SEAT AIRBAGS (SAB) ......................................6
3.1.8 ORC/SIACM DIAGNOSTIC TROUBLE CODES ..................6
3.1.9 ACTIVE CODES ...........................................7
3.1.10 STORED CODES ..........................................7
3.2 AUDIO SYSTEM ....................................................7
3.2.1 REMOTE RADIO CONTROLS................................8
3.2.2 CD CHANGER.............................................8
3.3 BODY CONTROL MODULE...........................................8
3.4 CHIME WARNING SYSTEM...........................................9
3.4.1 CHIME PRIORITY..........................................9
3.4.2 CHIME ON CONDITIONS....................................9
3.4.3 WARNING LAMP ANNOUNCEMENT .........................10
3.4.4 OTHER CHIME ON CONDITIONS............................10
3.5 COMMUNICATION .................................................11
3.6 DOOR AJAR SYSTEM ..............................................12
3.7 EXTERIOR LIGHTING SYSTEM ......................................12
3.7.1 HEADLAMP POWER ......................................12
3.7.2 HEADLAMP SWITCH ......................................12
3.7.3 PARK LAMP RELAY .......................................12
3.7.4 FOG LAMP RELAY........................................12
3.7.5 FOG LAMPS .............................................12
3.7.6 EXTERIOR LIGHTING BATTERY SAVER......................13
3.7.7 AUTO HEADLAMPS .......................................13
3.8 FRONT CONTROL MODULE.........................................13
3.8.1 CONTROLLED POWER FEEDS .............................13
3.8.2 RELAY CONTROLS .......................................14
3.8.3 ELECTRICAL INPUTS .....................................15
3.9 HEATING & A/C ...................................................16
3.9.1 AUTOMATIC TEMPERATURE CONTROL (ATC) ................16
3.9.1.1 CABIN HEATER ..........................................16
3.9.1.2 SYSTEM OPERATION .....................................16
3.9.1.3 BLOWER MOTOR OPERATION .............................16
3.9.1.4 INFRARED SENSORS .....................................16
3.9.1.5 REAR ATC SWITCH .......................................16
3.9.1.6 COOLDOWN TESTING ....................................16
3.9.1.7 ACTIVE AND STORED TROUBLE CODES ....................17
3.9.2 MANUAL TEMPERATURE CONTROL.........................17
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TABLE OF CONTENTS - Continued
3.9.2.1 SYSTEM AVAILABILITY ....................................17
3.9.2.2 CABIN HEATER ..........................................17
3.9.2.3 ZONE CONTROL – SINGLE-ZONE...........................17
3.9.2.4 ZONE CONTROL – DUAL-ZONE.............................17
3.9.2.5 AIR DISTRIBUTION .......................................17
3.9.2.6 DOOR ACTUATORS.......................................17
3.9.2.7 DOOR ACTUATOR CONTROL ..............................17
3.9.2.8 HVAC SYSTEM RELAYS ...................................18
3.9.2.9 EVAPORATOR TEMPERATURE SENSOR .....................18
3.9.2.10 A/C – HEATER CONTROL MODULE, SWITCH OPERATION......18
3.9.2.11 HVAC DIAGNOSTICS .....................................19
3.10 CABIN HEATER ...................................................19
3.10.1 GENERAL SAFETY INFORMATION ..........................19
3.10.2 COMPONENT DESCRIPTION AND OPERATION ...............19
3.10.2.1 DCHA ASSEMBLY.........................................19
3.10.2.2 COMBUSTION AIR FAN ...................................20
3.10.2.3 BURNER HOUSING .......................................20
3.10.2.4 BURNER INSERT .........................................20
3.10.2.5 CONTROL UNIT/HEAT EXCHANGER.........................20
3.10.2.6 DOSING PUMP...........................................20
3.10.3 OPERATION .............................................20
3.10.3.1 ACTIVATION .............................................20
3.10.3.2 HEATING ................................................21
3.10.3.3 DEACTIVATION...........................................21
3.10.4 DIAGNOSTICS ...........................................21
3.11 INSTRUMENT CLUSTER............................................21
3.11.1 INSTRUMENT CLUSTER SELF TEST ........................22
3.11.2 MESSAGE CENTER.......................................22
3.12 INTERIOR LIGHTING ...............................................22
3.12.1 COURTESY LAMP CONTROL...............................22
3.12.2 ILLUMINATED ENTRY .....................................22
3.12.3 INTERIOR LIGHTING BATTERY SAVER ......................22
3.13 MEMORY SYSTEM.................................................22
3.13.1 POWER SEAT............................................22
3.13.2 MEMORY MIRRORS.......................................23
3.14 OVERHEAD CONSOLE .............................................23
3.14.1 COMPASS/MINI-TRIP COMPUTER (CMTC)....................23
3.14.2 ELECTRONIC VEHICLE INFORMATION CENTER (EVIC) ........23
3.14.3 SETTING THE COMPASS ..................................23
3.14.4 SETTING THE VARIANCE..................................23
3.15 POWER DOOR LOCK SYSTEM ......................................24
3.15.1 SLIDING DOOR MEMORY LOCK ............................24
3.15.2 DOOR LOCK INHIBIT......................................24
3.15.3 AUTOMATIC DOOR LOCKS ................................24
3.15.4 REMOTE KEYLESS ENTRY (RKE)...........................24
3.16 POWER FOLDING MIRRORS ........................................24
3.17 POWER LIFTGATE SYSTEM.........................................25
3.17.1 POWER LIFTGATE........................................25
3.17.2 DIAGNOSTIC FEATURES ..................................25
3.17.3 SYSTEM INHIBITORS .....................................25
3.18 POWER SLIDING DOOR SYSTEM....................................25
3.18.1 POWER SLIDING DOOR ...................................25
3.18.2 DIAGNOSTIC FEATURES ..................................26
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TABLE OF CONTENTS - Continued
3.18.3 SYSTEM INHIBITORS .....................................26
3.19 REAR WINDOW DEFOG/HEATED MIRROR/FRONT WIPER DE-ICE ........26
3.20 VEHICLE THEFT SECURITY SYSTEM.................................26
3.20.1 BASE ALARM SYSTEM ....................................26
3.20.2 THATCHAM ALARM SYSTEM ...............................27
3.21 WIPER SYSTEM ...................................................27
3.21.1 FRONT WIPER ...........................................27
3.21.2 SPEED SENSITIVE INTERMITTENT WIPE MODE ..............27
3.21.3 PULSE WIPE.............................................27
3.21.4 PARK AFTER IGNITION OFF................................27
3.21.5 WIPE AFTER WASH.......................................27
3.21.6 REAR WIPER ............................................27
3.21.7 SPEED SENSITIVE INTERMITTENT WIPE MODE ..............27
3.21.8 WIPE AFTER WASH.......................................28
3.22 USING THE DRBIIIT .......................................28
3.22.1 DRBIIIT ERROR MESSAGES ...............................28
3.22.2 DRBIIIT DOES NOT POWER UP (BLANK SCREEN).............28
3.22.3 DISPLAY IS NOT VISIBLE ..................................28
4.0 DISCLAIMERS, SAFETY, WARNINGS ......................................28
4.1 DISCLAIMERS.....................................................28
4.2 SAFETY..........................................................28
4.2.1 TECHNICIAN SAFETY INFORMATION........................28
4.2.2 VEHICLE PREPARATION FOR TESTING......................29
4.2.3 SERVICING SUB-ASSEMBLIES .............................29
4.2.4 DRBIIIT SAFETY INFORMATION ............................29
4.3 WARNINGS.......................................................29
4.3.1 VEHICLE DAMAGE WARNINGS .............................29
4.3.2 ROAD TESTING A COMPLAINT VEHICLE.....................29
5.0 REQUIRED TOOLS AND EQUIPMENT .....................................30
6.0 GLOSSARY OF TERMS..................................................30
7.0 DIAGNOSTIC INFORMATION AND PROCEDURES ...........................31
AIRBAG
FCM, ORC RUN ONLY DRIVER OPEN - ACTIVE .............................32
FCM, ORC RUN ONLY DRIVER OVER CURRENT - ACTIVE....................32
FCM, ORC RUN ONLY DRIVER OVER TEMP - ACTIVE .......................32
FCM, ORC RUN ONLY DRIVER OVER VOLT - ACTIVE........................32
FCM, ORC RUN ONLY DRIVER SHORT TO GROUND - ACTIVE ................32
ORC, LOSS OF IGNITION RUN ONLY - ACTIVE..............................32
FCM, ORC RUN ONLY DRIVER OPEN - STORED ............................37
FCM, ORC RUN ONLY DRIVER OVER CURRENT - STORED ..................37
FCM, ORC RUN ONLY DRIVER OVER TEMP - STORED ......................37
FCM, ORC RUN ONLY DRIVER OVER VOLT - STORED.......................37
FCM, ORC RUN ONLY DRIVER SHORT TO GROUND - STORED ...............37
FCM, ORC RUN-START DRIVER OPEN - STORED ...........................37
FCM, ORC RUN-START DRIVER OVER CURRENT - STORED .................37
FCM, ORC RUN-START DRIVER OVER TEMP - STORED .....................37
FCM, ORC RUN-START DRIVER OVER VOLT - STORED......................37
FCM, ORC RUN-START DRIVER SHORT TO GROUND - STORED ..............37
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TABLE OF CONTENTS - Continued
FCM, SIACM RUN-START DRIVER OPEN - STORED .........................37
FCM, SIACM RUN-START DRIVER OVER CURRENT - STORED................37
FCM, SIACM RUN-START DRIVER OVER TEMP - STORED....................37
FCM, SIACM RUN-START DRIVER OVER VOLT - STORED ....................37
FCM, SIACM RUN-START DRIVER SHORT TO GROUND - STORED ............37
FCM, ORC RUN-START DRIVER OPEN - ACTIVE ............................41
FCM, ORC RUN-START DRIVER OVER CURRENT - ACTIVE...................41
FCM, ORC RUN-START DRIVER OVER TEMP - ACTIVE ......................41
FCM, ORC RUN-START DRIVER OVER VOLT - ACTIVE .......................41
FCM, ORC RUN-START DRIVER SHORT TO GROUND - ACTIVE ...............41
ORC, LOSS OF IGNITION RUN-START - ACTIVE.............................41
FCM, SIACM RUN-START DRIVER OPEN - ACTIVE ..........................46
FCM, SIACM RUN-START DRIVER OVER CURRENT - ACTIVE.................46
FCM, SIACM RUN-START DRIVER OVER TEMP - ACTIVE.....................46
FCM, SIACM RUN-START DRIVER OVER VOLT - ACTIVE .....................46
FCM, SIACM RUN-START DRIVER SHORT TO GROUND - ACTIVE .............46
LEFT SIACM ACCELEROMETER 1 - ACTIVE ................................52
LEFT SIACM ACCELEROMETER1-STORED ...............................52
LEFT SIACM ACCELEROMETER 2 - ACTIVE ................................52
LEFT SIACM ACCELEROMETER2-STORED ...............................52
LEFT SIACM INTERNAL 1 - ACTIVE........................................52
LEFT SIACM INTERNAL 1 - STORED ......................................52
LEFT SIACM OUTPUT DRIVER 1 - ACTIVE .................................52
LEFT SIACM OUTPUT DRIVER1-STORED ................................52
LEFT SIACM, LOSS OF IGNITION RUN-START - ACTIVE......................52
LEFT SIACM, NO PCI TRANSMISSION - ACTIVE.............................52
LEFT SIACM, NO PCI TRANSMISSION - STORED............................55
LEFT SIACM, NO PCM MESSAGE - STORED ...............................55
LEFT SIACM, SEAT SQUIB CIRCUIT OPEN - STORED........................55
LEFT SIACM, SEAT SQUIB CIRCUIT SHORT - STORED.......................55
LEFT SIACM, SEAT SQUIB SHORT TO BATTERY - STORED...................55
LEFT SIACM, SEAT SQUIB SHORT TO GROUND - STORED...................55
ORC, INTERROGATE LEFT SIACM - STORED...............................55
ORC, NO LEFT SIACM MESSAGE - STORED ...............................55
LEFT SIACM, NO PCM MESSAGE - ACTIVE.................................58
LEFT SIACM, SEAT SQUIB CIRCUIT OPEN - ACTIVE .........................59
LEFT SIACM, SEAT SQUIB CIRCUIT SHORT - ACTIVE........................62
LEFT SIACM, SEAT SQUIB SHORT TO BATTERY - ACTIVE....................64
LEFT SIACM, SEAT SQUIB SHORT TO GROUND - ACTIVE ....................67
ORC ACCELEROMETER - ACTIVE.........................................70
ORC ACCELEROMETER - STORED .......................................70
ORC INTERNAL 1 - ACTIVE ..............................................70
ORC INTERNAL 1 - STORED .............................................70
ORC INTERNAL 2 - ACTIVE ..............................................70
ORC INTERNAL 2 - STORED .............................................70
ORC OUTPUT DRIVER 1 - ACTIVE ........................................70
ORC OUTPUT DRIVER1-STORED .......................................70
ORC OUTPUT DRIVER 2 - ACTIVE ........................................70
ORC OUTPUT DRIVER2-STORED .......................................70
ORC STORED ENERGY FIRING - ACTIVE ..................................70
ORC STORED ENERGY FIRING - STORED .................................70
ORC, NO PCI TRANSMISSION - ACTIVE ...................................70
ORC, CALIBRATION MISMATCH - ACTIVE ..................................73
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TABLE OF CONTENTS - Continued
ORC, CALIBRATION MISMATCH - STORED .................................75
ORC, CLUSTER MESSAGE MISMATCH - STORED...........................75
ORC, DRIVER SBS OPEN - STORED ......................................75
ORC, DRIVER SBS SHORT TO BATTERY - STORED .........................75
ORC, DRIVER SBS SHORT TO GROUND - STORED .........................75
ORC, DRIVER SBT CIRCUIT OPEN - STORED ..............................75
ORC, DRIVER SBT CIRCUIT SHORT - STORED .............................75
ORC, DRIVER SBT SHORT TO BATTERY - STORED .........................75
ORC, DRIVER SBT SHORT TO GROUND - STORED .........................75
ORC, DRIVER SQUIB 1 CIRCUIT OPEN - STORED...........................75
ORC, DRIVER SQUIB 1 CIRCUIT SHORT - STORED .........................75
ORC, DRIVER SQUIB 1 SHORT TO BATTERY - STORED......................75
ORC, DRIVER SQUIB 1 SHORT TO GROUND - STORED......................75
ORC, DRIVER SQUIB 2 CIRCUIT OPEN - STORED...........................75
ORC, DRIVER SQUIB 2 CIRCUIT SHORT - STORED .........................75
ORC, DRIVER SQUIB 2 SHORT TO BATTERY - STORED......................75
ORC, DRIVER SQUIB 2 SHORT TO GROUND - STORED......................75
ORC, LOSS OF IGNITION RUN ONLY - STORED.............................75
ORC, LOSS OF IGNITION RUN-START - STORED............................75
ORC, NO CLUSTER MESSAGE - STORED..................................75
ORC, NO ODOMETER MESSAGE - STORED................................75
ORC, PASSENGER SBS OPEN - STORED ..................................75
ORC, PASSENGER SBS SHORT TO BATTERY - STORED.....................75
ORC, PASSENGER SBS SHORT TO GROUND - STORED .....................75
ORC, PASSENGER SBT CIRCUIT OPEN - STORED ..........................75
ORC, PASSENGER SBT CIRCUIT SHORT - STORED.........................75
ORC, PASSENGER SBT SHORT TO BATTERY - STORED.....................75
ORC, PASSENGER SBT SHORT TO GROUND - STORED .....................75
ORC, PASSENGER SQUIB 1 CIRCUIT OPEN - STORED ......................75
ORC, PASSENGER SQUIB 1 CIRCUIT SHORT - STORED .....................75
ORC, PASSENGER SQUIB 1 SHORT TO BATTERY - STORED .................75
ORC, PASSENGER SQUIB 1 SHORT TO GROUND - STORED .................75
ORC, PASSENGER SQUIB 2 CIRCUIT OPEN - STORED ......................75
ORC, PASSENGER SQUIB 2 CIRCUIT SHORT - STORED .....................75
ORC, PASSENGER SQUIB 2 SHORT TO BATTERY - STORED .................75
ORC, PASSENGER SQUIB 2 SHORT TO GROUND - STORED .................75
ORC, VEHICLE BODY STYLE UNKNOWN - STORED .........................75
ORC, WARNING INDICATOR CIRCUIT OPEN - STORED ......................75
ORC, WARNING INDICATOR CIRCUIT SHORT - STORED .....................75
ORC, CLUSTER MESSAGE MISMATCH - ACTIVE ............................82
ORC, DRIVER SBS OPEN - ACTIVE .......................................84
ORC, DRIVER SBS SHORT TO BATTERY - ACTIVE ..........................86
ORC, DRIVER SBS SHORT TO GROUND - ACTIVE ..........................88
ORC, DRIVER SBT CIRCUIT OPEN - ACTIVE................................90
ORC, DRIVER SBT CIRCUIT SHORT - ACTIVE ..............................92
ORC, DRIVER SBT SHORT TO BATTERY - ACTIVE ..........................94
ORC, DRIVER SBT SHORT TO GROUND - ACTIVE...........................96
ORC, DRIVER SQUIB 1 CIRCUIT OPEN - ACTIVE............................98
ORC, DRIVER SQUIB 1 CIRCUIT SHORT - ACTIVE..........................101
ORC, DRIVER SQUIB 1 SHORT TO BATTERY - ACTIVE......................104
ORC, DRIVER SQUIB 1 SHORT TO GROUND - ACTIVE......................107
ORC, DRIVER SQUIB 2 CIRCUIT OPEN - ACTIVE ...........................110
ORC, DRIVER SQUIB 2 CIRCUIT SHORT - ACTIVE..........................113
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TABLE OF CONTENTS - Continued
ORC, DRIVER SQUIB 2 SHORT TO BATTERY - ACTIVE......................116
ORC, DRIVER SQUIB 2 SHORT TO GROUND - ACTIVE......................119
ORC, INTERROGATE LEFT SIACM - ACTIVE...............................122
ORC, INTERROGATE RIGHT SIACM - ACTIVE..............................123
ORC, INTERROGATE RIGHT SIACM - STORED.............................124
ORC, NO RIGHT SIACM MESSAGE - STORED .............................124
RIGHT SIACM, NO PCI TRANSMISSION - STORED .........................124
RIGHT SIACM, NO PCM MESSAGE - STORED .............................124
RIGHT SIACM, SEAT SQUIB CIRCUIT OPEN - STORED......................124
RIGHT SIACM, SEAT SQUIB CIRCUIT SHORT - STORED ....................124
RIGHT SIACM, SEAT SQUIB SHORT TO BATTERY - STORED ................124
RIGHT SIACM, SEAT SQUIB SHORT TO GROUND - STORED.................124
ORC, NO CLUSTER MESSAGE - ACTIVE..................................126
ORC, NO LEFT SIACM MESSAGE - ACTIVE ...............................128
ORC, NO ODOMETER MESSAGE - ACTIVE................................129
ORC, NO PCI TRANSMISSION - STORED .................................130
ORC, NO RIGHT SIACM MESSAGE - ACTIVE ..............................131
ORC, NOT CONFIGURED FOR SAB - ACTIVE ..............................132
ORC, NOT CONFIGURED FOR SAB - STORED.............................134
ORC, PASSENGER SBS OPEN - ACTIVE ..................................135
ORC, PASSENGER SBS SHORT TO BATTERY - ACTIVE .....................137
ORC, PASSENGER SBS SHORT TO GROUND - ACTIVE .....................139
ORC, PASSENGER SBT CIRCUIT OPEN - ACTIVE ..........................141
ORC, PASSENGER SBT CIRCUIT SHORT - ACTIVE .........................143
ORC, PASSENGER SBT SHORT TO BATTERY - ACTIVE .....................145
ORC, PASSENGER SBT SHORT TO GROUND - ACTIVE .....................147
ORC, PASSENGER SQUIB 1 CIRCUIT OPEN - ACTIVE ......................149
ORC, PASSENGER SQUIB 1 CIRCUIT SHORT - ACTIVE .....................152
ORC, PASSENGER SQUIB 1 SHORT TO BATTERY - ACTIVE .................154
ORC, PASSENGER SQUIB 1 SHORT TO GROUND - ACTIVE .................157
ORC, PASSENGER SQUIB 2 CIRCUIT OPEN - ACTIVE ......................159
ORC, PASSENGER SQUIB 2 CIRCUIT SHORT - ACTIVE .....................162
ORC, PASSENGER SQUIB 2 SHORT TO BATTERY - ACTIVE .................164
ORC, PASSENGER SQUIB 2 SHORT TO GROUND - ACTIVE .................167
ORC, VEHICLE BODY STYLE UNKNOWN - ACTIVE .........................169
ORC, WARNING INDICATOR CIRCUIT OPEN - ACTIVE ......................171
ORC, WARNING INDICATOR CIRCUIT SHORT - ACTIVE .....................171
RIGHT SIACM ACCELEROMETER 1 - ACTIVE..............................173
RIGHT SIACM ACCELEROMETER1-STORED.............................173
RIGHT SIACM ACCELEROMETER 2 - ACTIVE..............................173
RIGHT SIACM ACCELEROMETER2-STORED.............................173
RIGHT SIACM INTERNAL 1 - ACTIVE .....................................173
RIGHT SIACM INTERNAL 1 - STORED ....................................173
RIGHT SIACM OUTPUT DRIVER 1 - ACTIVE ...............................173
RIGHT SIACM OUTPUT DRIVER1-STORED ..............................173
RIGHT SIACM, LOSS OF IGNITION RUN-START - ACTIVE....................173
RIGHT SIACM, NO PCI TRANSMISSION - ACTIVE ..........................173
RIGHT SIACM, NO PCM MESSAGE - ACTIVE ..............................176
RIGHT SIACM, SEAT SQUIB CIRCUIT OPEN - ACTIVE.......................177
RIGHT SIACM, SEAT SQUIB CIRCUIT SHORT - ACTIVE .....................180
RIGHT SIACM, SEAT SQUIB SHORT TO BATTERY - ACTIVE..................182
RIGHT SIACM, SEAT SQUIB SHORT TO GROUND - ACTIVE..................185
*AIRBAG INDICATOR ON WITHOUT ACTIVE TROUBLE CODES ...............188
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TABLE OF CONTENTS - Continued
AUDIO
ALL OUTPUTS SHORTED...............................................189
AM SECTION .........................................................192
CASS ERROR.........................................................192
CASSETTE COMMUNICATION FAULT.....................................192
CASSETTE EJECT FAILURE.............................................192
CASSETTE LOADING FAILURE ..........................................192
CASSETTE TAPE TENSION HIGH ........................................192
CASSETTE TAPE TENSION LOW.........................................192
CD ERROR ...........................................................192
CD MECHANICAL FAILURE .............................................192
FM SECTION..........................................................192
MICRO OUTPUT FAILURE ..............................................192
RADIO ERROR ........................................................192
*AM/FM SWITCH INOPERATIVE..........................................192
*ANY STATION PRESET SWITCH INOPERATIVE............................192
*BALANCE INOPERATIVE...............................................192
*CD EJECT SWITCH INOPERATIVE.......................................192
*EQUALIZER INOPERATIVE .............................................192
*FADER INOPERATIVE .................................................192
*FF/RW SWITCH INOPERATIVE..........................................192
*HOUR/MINUTE SWITCHES INOPERATIVE ................................192
*PAUSE/PLAY SWITCH INOPERATIVE ....................................192
*PWR SWITCH INOPERATIVE ...........................................192
*SCAN SWITCH INOPERATIVE ..........................................192
*SEEK SWITCH INOPERATIVE...........................................192
*SET SWITCH INOPERATIVE ............................................192
*TAPE EJECT SWITCH INOPERATIVE.....................................192
*TIME SWITCH INOPERATIVE ...........................................192
*TUNE SWITCH INOPERATIVE...........................................192
CD CHANGER MECHANICAL FAILURE....................................195
CD CHANGER PLAY FAILURE ...........................................196
CD CHANGER READ FAILURE...........................................196
IMPROPER DISK IN CD CHANGER.......................................196
CD CHANGER POWER SUPPLY TOO HIGH................................197
CD CHANGER TEMPERATURE HIGH .....................................198
CD CHANGER TEMPERATURE LOW .....................................198
CD PLAY FAILURE .....................................................199
CD READ FAILURE ....................................................199
IMPROPER DISK IN CD.................................................199
CD TEMPERATURE HIGH...............................................200
CD TEMPERATURE LOW ...............................................200
FRONT OUTPUT SHORT................................................201
LEFT OUTPUT SHORT .................................................204
NBS OUTPUT 1 OPEN..................................................207
NBS OUTPUT 2 OPEN..................................................207
NBS OUTPUT 1 SHORT TO BATT ........................................209
NBS OUTPUT 2 SHORT TO BATT ........................................209
NO ANTENNA CONNECTION ............................................211
NO VIN RECEIVED.....................................................212
VIN MISMATCH........................................................212
POWER SUPPLY TOO HIGH.............................................213
REAR OUTPUT SHORT.................................................214
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TABLE OF CONTENTS - Continued
REMOTE RADIO SWITCH OPEN OR *REMOTE RADIO CONTROLS
INOPERATIVE.........................................................217
REMOTE RADIO SWITCH STUCK ........................................219
RIGHT OUTPUT SHORT ................................................222
AUTOMATIC TEMPERATURE CONTROL
AC PRESSURE TOO HIGH (ACTIVE)......................................225
AC PRESSURE TOO LOW (ACTIVE) ......................................225
AC PRESSURE TOO HIGH (STORED).....................................226
AC PRESSURE TOO LOW (STORED) .....................................226
DRIVER BLEND DOOR NOT RESPONDING (STORED) ......................226
DRIVER BLEND DOOR RANGE TOO LARGE (STORED) .....................226
DRIVER BLEND DOOR TRAVEL TOO SMALL (STORED) .....................226
FRONT IR SENSOR AND CONTROL HEAD MISMATCH (STORED).............226
FRONT IR SENSOR CHANGE TOO LARGE (STORED).......................226
FRONT IR SENSOR HIGH (STORED) .....................................226
FRONT IR SENSOR LOW (STORED)......................................226
FRONT IR SENSOR NOT CALIBRATED (STORED)..........................226
FRONT KEYBOARD COMMUNICATION FAULT (STORED)....................226
FRONT KEYBOARD FAULT (STORED) ....................................226
FRONT MODE DOOR NOT RESPONDING (STORED)........................226
FRONT MODE DOOR TRAVEL TOO LARGE (STORED) ......................226
FRONT MODE DOOR TRAVEL TOO SMALL (STORED) ......................226
PASS BLEND DOOR NOT RESPONDING (STORED).........................226
PASS BLEND DOOR TRAVEL TOO LARGE (STORED) .......................226
PASS BLEND DOOR TRAVEL TOO SMALL (STORED) .......................226
PCI BUS SHORTED HIGH (STORED) .....................................226
PCI BUS SHORTED LOW (STORED)......................................226
REAR BLEND DOOR NOT RESPONDING (STORED) ........................226
REAR BLEND DOOR RANGE TOO LARGE (STORED) .......................226
REAR BLEND DOOR TRAVEL TOO SMALL (STORED) .......................226
REAR FAN POT OPEN (STORED) ........................................226
REAR FAN POT SHORTED (STORED) ....................................226
REAR IR SENSOR HIGH (STORED) ......................................226
REAR IR SENSOR LOW (STORED).......................................226
REAR IR SENSOR NOT CALIBRATED (STORED) ...........................226
REAR KEYBOARD FAULT (STORED) .....................................226
REAR MODE DOOR NOT RESPONDING (STORED).........................226
REAR MODE DOOR TRAVEL TOO LARGE (STORED) .......................226
REAR MODE DOOR TRAVEL TOO SMALL (STORED)........................226
REAR MODE POT OPEN (STORED) ......................................226
REAR MODE POT SHORTED (STORED) ..................................226
RECIRC DOOR NOT RESPONDING (STORED) .............................226
RECIRC DOOR TRAVEL TOO LARGE (STORED)............................226
RECIRC DOOR TRAVEL TOO SMALL (STORED)............................226
COOLDOWN TEST FAILED..............................................232
DRIVER BLEND DOOR NOT RESPONDING (ACTIVE) .......................234
DRIVER BLEND DOOR TRAVEL TOO LARGE (ACTIVE)......................236
DRIVER BLEND DOOR TRAVEL TOO SMALL (ACTIVE) ......................238
EEPROM CHECKSUM ERROR (ACTIVE) ..................................240
EVAP TEMP SENSOR OPEN ............................................241
EVAP TEMP SENSOR SHORTED.........................................243
FRONT IR SENSOR AND CONTROL HEAD MISMATCH (ACTIVE)..............245
viii
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TABLE OF CONTENTS - Continued
FRONT IR SENSOR CHANGE TOO LARGE (ACTIVE)........................245
FRONT IR SENSOR HIGH (ACTIVE) ......................................245
FRONT IR SENSOR LOW (ACTIVE).......................................245
FRONT IR SENSOR NOT CALIBRATED (ACTIVE) ...........................246
FRONT KEYBOARD FAULT (ACTIVE) .....................................246
FRONT KEYBOARD COMMUNICATION FAULT (ACTIVE).....................251
FRONT MODE DOOR NOT RESPONDING (ACTIVE).........................252
FRONT MODE DOOR TRAVEL TOO LARGE (ACTIVE) .......................254
FRONT MODE DOOR TRAVEL TOO SMALL (ACTIVE) .......................256
INVALID CONDITIONS FOR COOLDOWN TEST, EVAP TEMPERATURE TOO
LOW.................................................................258
PASS BLEND DOOR NOT RESPONDING (ACTIVE)..........................261
PASS BLEND DOOR TRAVEL TOO LARGE (ACTIVE) ........................263
PASS BLEND DOOR TRAVEL TOO SMALL (ACTIVE) ........................265
PCI BUS SHORTED HIGH (ACTIVE) ......................................267
PCI BUS SHORTED LOW (ACTIVE).......................................267
REAR BLEND DOOR NOT RESPONDING (ACTIVE) .........................268
REAR BLEND DOOR TRAVEL TOO LARGE (ACTIVE)........................270
REAR BLEND DOOR TRAVEL TOO SMALL (ACTIVE) ........................272
REAR FAN POT OPEN (ACTIVE) .........................................274
REAR FAN POT SHORTED (ACTIVE) .....................................274
REAR IR SENSOR HIGH (ACTIVE) .......................................274
REAR IR SENSOR LOW (ACTIVE)........................................274
REAR MODE POT OPEN (ACTIVE) .......................................274
REAR MODE POT SHORTED (ACTIVE) ...................................274
REAR IR SENSOR NOT CALIBRATED (ACTIVE) ............................276
REAR KEYBOARD FAULT (ACTIVE) ......................................280
REAR MODE DOOR NOT RESPONDING (ACTIVE) ..........................284
REAR MODE DOOR TRAVEL TOO LARGE (ACTIVE) ........................286
REAR MODE DOOR TRAVEL TOO SMALL (ACTIVE).........................288
RECIRC DOOR NOT RESPONDING (ACTIVE) ..............................290
RECIRC DOOR TRAVEL TOO LARGE (ACTIVE).............................292
RECIRC DOOR TRAVEL TOO SMALL (ACTIVE).............................294
CABIN HEATER
CABIN HEATER PRE-TEST..............................................296
CABIN HEATER CONTROL CIRCUIT OPEN (STORED).......................296
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (STORED)..........296
B1000 CONTROL UNIT ERRONEOUS .....................................299
B1800 NO START......................................................300
B1801 FLAME OUT: DURING HEATING CYCLE .............................300
B1801 FLAME OUT: UNSTABLE OPERATION...............................300
B1802 POWER SUPPLY OUT OF RANGE: LOW VOLTAGE THRESHOLD........304
B1802 POWER SUPPLY OUT OF RANGE: VOLTAGE ABOVE 15.5 VOLTS.......307
B1803 FLAME DETECTED PRIOR TO COMBUSTION ........................308
B1811 HEATER OVERHEATED...........................................309
B1813 HEATER IN LOCKOUT MODE......................................313
B1820 DOSING PUMP CIRCUIT: OPEN OR SHORT TO BATTERY .............315
B1820 DOSING PUMP CIRCUIT: SHORT TO GROUND.......................318
B1821 COMBUSTION AIR FAN CIRCUIT: OPEN.............................321
B1821 COMBUSTION AIR FAN CIRCUIT: SHORT TO GROUND................321
B1822 GLOW PIN/FLAME SENSOR: OPEN ................................322
B1822 GLOW PIN/FLAME SENSOR: SHORT TO GROUND ...................322
ix
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TABLE OF CONTENTS - Continued
B1823 WATER PUMP CIRCUIT: OPEN.....................................323
B1823 WATER PUMP CIRCUIT: SHORT TO GROUND........................323
B1824 FAN SWITCH LINE SHORT TO GROUND ............................324
CABIN HEATER CONTROL CIRCUIT OPEN (ACTIVE)........................325
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (ACTIVE)...........329
*CABIN HEATER INOPERABLE FROM A/C - HEATER MODULE ...............332
CHIME
*CHIME INOPERATIVE..................................................334
*KEY IN IGNITION AND DRIVER’S DOOR OPEN CHIME NOT OPERATING
PROPERLY ...........................................................336
*PROBLEM WITH THE HIGH VEHICLE SPEED WARNING CHIME .............337
COMMUNICATION
ATC MESSAGES NOT RECEIVED ........................................338
AUDIO MESSAGES NOT RECEIVED ......................................339
BCM, PCI BUS SHORTED TO BATTERY...................................340
BCM, PCI BUS SHORTED TO GROUND ...................................340
FCM, PCI BUS SHORTED TO BATTERY ...................................340
FCM, PCI BUS SHORTED TO GROUND ...................................340
COUNTRY CODE NOT PROGRAMMED ...................................342
FCM MESSAGES NOT RECEIVED........................................343
FCM, BCM COMMUNICATION FAULT .....................................344
FCM, HVAC COMMUNICATION FAULT ....................................345
FCM, PCI INTERNAL FAULT .............................................346
FCM, PCM COMMUNICATION FAULT .....................................347
FCM, RADIO COMMUNICATION FAULT ...................................348
FCM, TCM COMMUNICATION FAULT .....................................349
IGNITION MUX SWITCH INPUT OPEN ....................................350
IGNITION MUX SWITCH INPUT SHORT ...................................352
IGNITION RUN OUTPUT SHORT .........................................353
INTERNAL BCM FAILURE ...............................................357
LEFT PSD MESSAGES NOT RECEIVED...................................358
LIFTGATE MODULE MESSAGES NOT RECEIVED...........................359
MIC MESSAGES NOT RECEIVED ........................................360
MSM MESSAGES NOT RECEIVED .......................................361
NO PCI MESSAGES FROM CD CHANGER.................................362
ORC MESSAGES NOT RECEIVED........................................364
OTIS MESSAGES NOT RECEIVED .......................................365
PCI INTERNAL HARDWARE FAILURE.....................................366
PCM MESSAGES NOT RECEIVED........................................367
RADIO MEM MSG NOT RECEIVED .......................................368
RIGHT PSD MESSAGES NOT RECEIVED..................................369
RUN/START HARDWIRE INPUT FAILURE..................................370
SKIM MESSAGES NOT RECEIVED .......................................371
TCM MESSAGES NOT RECEIVED........................................372
*BUS +/- SIGNALS OPEN FROM AUTOMATIC TEMPERATURE CONTROL
MODULE .............................................................373
*BUS +/- SIGNALS OPEN FROM MEMORY SEAT/MIRROR MODULE...........375
*BUS +/- SIGNALS OPEN FROM SENTRY KEY IMMOBILIZER MODULE ........377
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM BODY CONTROL
MODULE .............................................................379
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM HVAC ..................381
x
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TABLE OF CONTENTS - Continued
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM INSTRUMENT CLUSTER . .383
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM LEFT SLIDING DOOR
CONTROL MODULE....................................................386
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM POWER LIFTGATE
MODULE .............................................................389
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM RIGHT SLIDING DOOR
CONTROL MODULE....................................................392
*BUS +/- SIGNALS OPEN OR NO RESPONSE FROM THATCHAM ALARM
MODULE .............................................................395
*NO RESPONSE FROM CABIN HEATER ASSIST - DIESEL ONLY..............397
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE ...................399
*NO RESPONSE FROM ECM (PCI BUS) - DIESEL ONLY .....................401
*NO RESPONSE FROM ECM (SCI ONLY) - DIESEL ONLY....................402
*NO RESPONSE FROM FRONT CONTROL MODULE........................404
*NO RESPONSE FROM LEFT SIACM .....................................406
*NO RESPONSE FROM ORC ............................................408
*NO RESPONSE FROM OVERHEAD CONSOLE ............................410
*NO RESPONSE FROM PCM (PCI BUS)...................................412
*NO RESPONSE FROM PCM (SCI ONLY)..................................413
*NO RESPONSE FROM RADIO ..........................................416
*NO RESPONSE FROM RIGHT SIACM ....................................418
*NO RESPONSE FROM TRANSMISSION CONTROL MODULE ................420
*PCI BUS COMMUNICATION FAILURE ....................................423
DOOR AJAR
*HOOD AJAR CIRCUIT OPEN............................................426
*HOOD AJAR CIRCUIT SHORTED TO GROUND ............................427
*LEFT FRONT DOOR AJAR SWITCH SENSE CIRCUIT OPEN .................428
*LEFT FRONT DOOR AJAR SWITCH SENSE CIRCUIT SHORTED TO GROUND. .429
*LEFT SLIDING DOOR AJAR SWITCH SENSE CIRCUIT OPEN ................430
*LEFT SLIDING DOOR AJAR SWITCH SENSE CIRCUIT SHORTED TO
GROUND.............................................................432
*LIFTGATE AJAR CIRCUIT OPEN.........................................433
*LIFTGATE AJAR CIRCUIT SHORTED TO GROUND .........................434
*RIGHT FRONT DOOR AJAR SWITCH SENSE CIRCUIT OPEN ................435
*RIGHT FRONT DOOR AJAR SWITCH SENSE CIRCUIT SHORTED TO
GROUND.............................................................436
*RIGHT SLIDING DOOR AJAR CIRCUIT OPEN .............................437
*RIGHT SLIDING DOOR AJAR CIRCUIT SHORTED TO GROUND..............439
ELECTRICALLY HEATED SYSTEMS
EBL RUN ONLY RELAY OPEN ...........................................440
EBL RUN ONLY RELAY SHORTED TO BATTERY............................442
EXTERIOR LIGHTING
BACKUP LAMP OUTPUT OPEN ..........................................443
BACKUP LAMP OUTPUT SHORT.........................................445
FRONT FOG LAMP RELAY OPEN ........................................446
FRONT FOG LAMP SHORTED TO BATTERY ...............................448
HEADLAMP SWITCH MISMATCH.........................................449
HEADLAMP SWITCH OPEN .............................................450
HEADLAMP SWITCH SHORT TO GROUND ................................452
HIGH BEAM SWITCH INPUT OPEN.......................................454
xi
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TABLE OF CONTENTS - Continued
HIGH BEAM SWITCH INPUT SHORT......................................456
LEFT FRONT TURN SIGNAL OUTPUT OPEN...............................458
LEFT FRONT TURN SIGNAL OUTPUT SHORT..............................460
LEFT HIGH BEAM HEADLAMP CIRCUIT OPEN .............................462
LEFT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO GROUND .............464
LEFT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE .............466
LEFT LOW BEAM HEADLAMP CIRCUIT OPEN .............................468
LEFT LOW BEAM HEADLAMP CIRCUIT SHORTED TO GROUND ..............470
LEFT LOW BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE..............472
LEFT REAR TURN SIGNAL OUTPUT OPEN ................................474
LEFT REAR TURN SIGNAL OUTPUT SHORT...............................476
LEFT SIDE PARK LAMP OPEN...........................................478
PARK LAMP OUTPUT 1 OPEN ...........................................480
PARK LAMP OUTPUT 1 SHORT TO BATTERY..............................482
PARK LAMP OUTPUT 2 OPEN ...........................................483
PARK LAMP OUTPUT 2 SHORT TO BATTERY..............................485
RIGHT FRONT TURN SIGNAL OUTPUT OPEN..............................486
RIGHT FRONT TURN SIGNAL OUTPUT SHORT ............................488
RIGHT HIGH BEAM HEADLAMP CIRCUIT OPEN............................490
RIGHT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO GROUND ............492
RIGHT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE ............494
RIGHT LOW BEAM HEADLAMP CIRCUIT OPEN ............................496
RIGHT LOW BEAM HEADLAMP CIRCUIT SHORTED TO GROUND.............498
RIGHT LOW BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE ............500
RIGHT REAR TURN SIGNAL OUTPUT OPEN...............................502
RIGHT REAR TURN SIGNAL OUTPUT SHORT..............................504
RIGHT SIDE PARK LAMP OPEN..........................................506
TURN SIGNAL SWITCH INPUT OPEN .....................................508
TURN SIGNAL SWITCH INPUT SHORT....................................510
HEATING & A/C
A/C FAULT (ACTIVE) - MANUAL A/C ......................................512
CHECKSUM FAILURE (ACTIVE) - MANUAL A/C.............................512
POWER FAULT (ACTIVE) - MANUAL A/C ..................................512
REAR DEFOG FAILURE (ACTIVE) - MAN A/C...............................512
RECIRCULATION FAULT (ACTIVE) - MANUAL A/C...........................512
UNKNOWN FAULT DETECTED (ACTIVE) - MANUAL A/C .....................512
A/C FAULT (STORED) - MANUAL A/C .....................................514
BACKLIGHT DIMMING RX FAILURE (STORED) - MANUAL A/C ................514
BLEND OVERCURRENT (STORED) - MANUAL A/C..........................514
CHECKSUM FAILURE (STORED) - MANUALA/C............................514
EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN (STORED) - MANUAL
A/C..................................................................514
EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT (STORED) - MANUAL
A/C..................................................................514
LOOPBACK FAILURE (STORED) - MANUALA/C ............................514
LOOPBACK TEST FAILURE (STORED) - MANUALA/C .......................514
MODE OVERCURRENT (STORED) - MANUAL A/C ..........................514
NO BCM MESSAGE RECEIVED (STORED) - MANUAL A/C ...................514
NO PCM MESSAGE RECEIVED (STORED) - MANUAL A/C ...................514
PCM COMMUNICATION FAILURE (STORED) - MANUAL A/C..................514
POWER FAULT (STORED) - MANUAL A/C .................................514
REAR BLEND OVERCURRENT (STORED) - MANUAL A/C ....................514
xii
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TABLE OF CONTENTS - Continued
REAR BLEND POT CIRCUIT OPEN (STORED) - MANUAL A/C.................514
REAR BLEND POT CIRCUIT SHORT (STORED) - MANUAL A/C ...............514
REAR DEFOG FAILURE (STORED) - MANUAL A/C ..........................514
REAR MODE OVERCURRENT (STORED) - MANUAL A/C.....................514
RECIRC OVERCURRENT (STORED) - MANUAL A/C.........................514
RECIRCULATION FAULT (STORED) - MANUAL A/C..........................514
TX FAILURE (STORED) - MANUALA/C ....................................514
UNKNOWN FAULT DETECTED (STORED) - MANUAL A/C ....................514
VEHICLE ODOMETER FAILURE (STORED) - MANUAL A/C ...................514
ZONE OVERCURRENT (STORED) - MANUAL A/C...........................514
BACKLIGHT DIMMING RX FAILURE (ACTIVE) - MANUAL A/C .................519
NO BCM MESSAGE RECEIVED (ACTIVE) - MANUAL A/C ....................519
BLEND CALIBRATION FAULT - MANUAL A/C ...............................521
MODE CALIBRATION FAULT - MANUAL A/C................................521
RECIRCULATION CALIBRATION FAULT - MANUAL A/C ......................521
ZONE CALIBRATION FAULT - MANUAL A/C ................................521
BLEND OVERCURRENT (ACTIVE) - MANUAL A/C...........................526
MODE OVERCURRENT (ACTIVE) - MANUAL A/C ...........................526
REAR BLEND OVERCURRENT (ACTIVE) - MANUAL A/C .....................526
REAR MODE OVERCURRENT (ACTIVE) - MANUAL A/C......................526
RECIRC OVERCURRENT (ACTIVE) - MANUAL A/C..........................526
ZONE OVERCURRENT (ACTIVE) - MANUAL A/C............................526
COOLDOWN TEST EXCESSIVE FAULT - MANUAL A/C.......................532
COOLDOWN TEST SENSOR FAILURE - MANUAL A/C .......................532
COOLDOWN TEST SET UP FAULT - MANUAL A/C ..........................534
COOLDOWN TEST TOO COLD TO START - MANUAL A/C ....................535
EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN (ACTIVE) - MANUAL
A/C..................................................................538
EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT (ACTIVE) - MANUAL
A/C..................................................................540
FRONT AND REAR BLOWER OUTPUT 1 OPEN ............................542
FRONT AND REAR BLOWER OUTPUT 2 OPEN ............................542
FRONT AND REAR BLOWER OUTPUT 1 SHORT TO BATT ...................544
FRONT AND REAR BLOWER OUTPUT 2 SHORT TO BATT ...................544
LOOPBACK FAILURE (ACTIVE) - MANUAL A/C .............................546
LOOPBACK TEST FAILURE (ACTIVE) - MANUAL A/C ........................546
NO PCM MESSAGE RECEIVED (ACTIVE) - MANUAL A/C ....................547
PCM COMMUNICATION FAILURE (ACTIVE) - MANUAL A/C...................547
VEHICLE ODOMETER FAILURE (ACTIVE) - MANUAL A/C ....................547
REAR BLEND CALIBRATION FAULT - MANUAL A/C .........................549
REAR MODE CALIBRATION FAULT - MANUAL A/C ..........................549
REAR BLEND POT CIRCUIT OPEN (ACTIVE) - MANUAL A/C..................553
REAR BLEND POT CIRCUIT SHORT (ACTIVE) - MANUAL A/C ................556
TX FAILURE (ACTIVE) - MANUAL A/C .....................................559
INSTRUMENT CLUSTER
ABS LAMP CKT SHORT ................................................561
ABS LAMP OPEN ......................................................562
AIRBAG LAMP CKT SHORT .............................................563
AIRBAG LAMP OPEN...................................................564
EL PANEL SHORT .....................................................565
FRONT FOG LAMP INDICATOR OPEN ....................................567
FRONT FOG LAMP INDICATOR SHORT TO GROUND .......................569
xiii
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TABLE OF CONTENTS - Continued
FUEL GAUGE CHECKSUM FAILURE......................................571
FUEL LEVEL SENDING UNIT INPUT OPEN ................................572
FUEL LEVEL SENDING UNIT INPUT SHORT ...............................574
IOD WAKEUP CLUSTER OUTPUT OPEN ..................................576
IOD WAKEUP CLUSTER OUTPUT SHORT.................................578
LEFT TURN SIGNAL INDICATOR OPEN (HIGHLINE).........................580
LEFT TURN SIGNAL INDICATOR OPEN (LOWLINE) .........................582
LEFT TURN SIGNAL INDICATOR SHORT (HIGHLINE)........................584
LEFT TURN SIGNAL INDICATOR SHORT (LOWLINE) ........................586
LOOPBACK FAILURE...................................................588
NO ABS BUS MESSAGES RECEIVED.....................................589
NO BCM BUS MESSAGES RECEIVED ....................................590
NO FCM BUS MESSAGES RECEIVED ....................................591
NO ORC BUS MESSAGES RECEIVED ....................................592
NO PCM BUS MESSAGES RECEIVED ....................................593
NO TCM BUS MESSAGES RECEIVED ....................................594
PANEL DIMMING OUTPUT SHORT .......................................595
REAR FOG INDICATOR OUTPUT OPEN...................................600
REAR FOG INDICATOR OUTPUT SHORT..................................602
RIGHT TURN SIGNAL INDICATOR OPEN (HIGHLINE)........................604
RIGHT TURN SIGNAL INDICATOR OPEN (LOWLINE)........................606
RIGHT TURN SIGNAL INDICATOR SHORT (HIGHLINE) ......................608
RIGHT TURN SIGNAL INDICATOR SHORT (LOWLINE).......................610
SPEEDOMETER CHECKSUM FAILURE....................................612
TACHOMETER CHECKSUM FAILURE.....................................613
TCM MESSAGE MISMATCH .............................................614
TEMPERATURE GAUGE CHECKSUM FAILURE.............................615
*ANY PCI BUS INDICATOR INOPERATIVE .................................616
INTELLIGENT POWER MODULE
ACCESSORY POWER OUTPUT #1 OPEN .................................617
ACCESSORY POWER OUTPUT #1 SHORTED TO BATTERY..................619
ACCESSORY POWER OUTPUT #2 OPEN .................................621
ACCESSORY POWER OUTPUT #2 SHORTED TO BATTERY..................623
CPA NOT ENGAGED ...................................................625
IGN RUN/START INPUT WIRING .........................................627
IGNITION START INPUT WIRING .........................................629
INTERNAL DRIVER FAULT #1............................................631
INTERNAL DRIVER FAULT #2............................................632
INTERNAL DRIVER FAULT #3............................................633
INTERIOR LIGHTING
DOME LAMP OUTPUT SHORT...........................................634
DOME SWITCH INPUT OPEN............................................635
DOME SWITCH INPUT SHORT...........................................636
FRONT COURTESY LAMPS OUTPUT SHORT ..............................638
HALO/DOOR/LIFTGATE LAMP OUTPUT SHORT ............................640
READING LAMP OUTPUT SHORT........................................641
MEMORY SEAT
BCM MESSAGE NOT RECEIVED.........................................642
CHARGING VOLTAGE HIGH MESSAGE ...................................643
CHARGING VOLTAGE LOW MESSAGE....................................644
xiv
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TABLE OF CONTENTS - Continued
EEPROM REFRESH FAILURE ...........................................645
FRONT RISER DOWN POSITION STUCK..................................646
FRONT RISER SENSOR OUT OF RANGE HIGH ............................648
FRONT RISER SENSOR OUT OF RANGE LOW.............................651
FRONT RISER UP POSITION STUCK .....................................654
HORIZONTAL FORWARD POSITION STUCK ...............................656
HORIZONTAL REARWARD POSITION STUCK ..............................658
HORIZONTAL SENSOR OUT OF RANGE HIGH .............................660
HORIZONTAL SENSOR OUT OF RANGE LOW .............................663
LEFT MIRROR HORIZONTAL SENSOR OUT OF RANGE HIGH................666
LEFT MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW ................668
LEFT MIRROR VERTICAL SENSOR OUT OF RANGE HIGH...................670
LEFT MIRROR VERTICAL SENSOR OUT OF RANGE LOW ...................672
MEMORY POSITION SWITCH STUCK.....................................674
MEMORY SWITCH INPUT OPEN .........................................676
MEMORY SWITCH INPUT SHORT ........................................678
REAR RISER DOWN POSITION STUCK ...................................680
REAR RISER SENSOR OUT OF RANGE HIGH .............................682
REAR RISER SENSOR OUT OF RANGE LOW..............................685
REAR RISER UP POSITION STUCK ......................................688
RECLINER DOWN POSITION STUCK .....................................690
RECLINER SENSOR OUT OF RANGE HIGH ...............................692
RECLINER SENSOR OUT OF RANGE LOW................................695
RECLINER UP POSITION STUCK ........................................698
RIGHT MIRROR HORIZONTAL SENSOR OUT OF RANGE HIGH...............700
RIGHT MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW ...............702
RIGHT MIRROR VERTICAL SENSOR OUT OF RANGE HIGH .................704
RIGHT MIRROR VERTICAL SENSOR OUT OF RANGE LOW ..................706
OVERHEAD CONSOLE
BUS MESSAGES MISSING..............................................708
COMPASS TEST FAILURE ..............................................710
DEMAGNETIZE COMPASS AS PER SERVICE MANUAL ......................711
EC MIRROR DAY/NIGHT LINE FAULT .....................................712
EVIC INTERNAL FAILURE...............................................714
OTIS MODULE MESSAGE MISMATCH ....................................715
OTIS MODULE MESSAGE MISMATCH (DIESEL)............................717
*REPAIRING CMTC DISPLAYS DOUBLE DASH(--)INTEMP DISPLAY........719
POWER DOOR LOCKS/RKE
DRIVER DOOR LOCK SWITCH INPUT OPEN...............................722
DRIVER DOOR LOCK SWITCH INPUT SHORT .............................724
DRIVER DOOR LOCK SWITCH INPUT STUCK..............................726
LEFT CYLINDER LOCK SWITCH INPUT OPEN .............................728
LEFT CYLINDER LOCK SWITCH INPUT SHORT ............................730
LEFT CYLINDER LOCK SWITCH INPUT STUCK ............................732
LEFT UNLOCK OUTPUT FAILURE ........................................734
LIFTGATE CYLINDER SWITCH INPUT OPEN...............................736
LIFTGATE CYLINDER SWITCH INPUT SHORT..............................738
LIFTGATE CYLINDER SWITCH INPUT STUCK..............................740
LIFTGATE UNLOCK POWER OUTPUT SHORT .............................742
LOCK OUTPUT FAILURE................................................744
PASSENGER DOOR LOCK SWITCH INPUT OPEN ..........................747
xv
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TABLE OF CONTENTS - Continued
PASSENGER DOOR LOCK SWITCH INPUT SHORT .........................749
PASSENGER DOOR LOCK SWITCH INPUT STUCK .........................751
RIGHT CYLINDER LOCK SWITCH INPUT OPEN ............................753
RIGHT CYLINDER LOCK SWITCH INPUT SHORT ...........................755
RIGHT CYLINDER LOCK SWITCH INPUT STUCK ...........................757
RIGHT UNLOCK OUTPUT FAILURE.......................................759
RKE PROGRAM LINE OUTPUT OPEN ....................................761
RKE PROGRAM LINE OUTPUT SHORT ...................................763
POWER DOORS - LIFTGATE
AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN ........................764
AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT TO GROUND ...........766
CONTROL MODULE FAILURE - INTERNAL FAILURE ........................768
INCOMPLETE LATCH CINCH - NO CURRENT ..............................769
INCOMPLETE LATCH CINCH - NO PAWL TRANSITION ......................771
INCOMPLETE LATCH CINCH - OVERCURRENT ............................773
INCOMPLETE LATCH CINCH - PAWL SWITCH FAILURE .....................776
INCOMPLETE LATCH CINCH - RATCHET SWITCH FAILURE..................779
INCOMPLETE LATCH RELEASE - NO CURRENT ...........................782
INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE ...............785
INCOMPLETE LATCH RELEASE- OVERCURRENT ..........................787
INCOMPLETE LATCH RELEASE- PAWL SWITCH FAILURE ...................788
INCOMPLETE LATCH RELEASE- SECTOR GEAR RETURN FAILURE ..........790
INCOMPLETE POWER CLOSE - FULL OPEN SWITCH FAILURE...............791
INCOMPLETE POWER CLOSE - MISSING HALL SIGNAL.....................793
INCOMPLETE POWER CLOSE - OVER CURRENT ..........................796
INCOMPLETE POWER CLOSE - TIME OUT ................................799
INCOMPLETE POWER OPEN - FULL OPEN SWITCH FAILURE................800
INCOMPLETE POWER OPEN - LATCH FAILURE............................802
INCOMPLETE POWER OPEN - MISSING HALL SIGNAL......................808
INCOMPLETE POWER OPEN - OVERCURRENT ............................811
INCOMPLETE POWER OPEN - TIME OUT .................................814
IODWAKEUPOPEN-PLG.............................................815
LOOPBACK TEST FAILURE .............................................817
LOSS OF BCM MESSAGES .............................................818
LOSS OF EATX MESSAGES.............................................819
LOSS OF FCM MESSAGES .............................................820
LOSS OF SBEC MESSAGES ............................................821
OUTSIDE LIFTGATE HANDLE INPUT SHORT ..............................822
OUTSIDE LIFTGATE HANDLE INPUT STUCK...............................823
OVERHEAD LIFTGATE SWITCH INPUT STUCK.............................824
OVERHEAD LIFTGATE/LOCKOUT SWITCHES OPEN ........................825
OVERHEAD LIFTGATE/LOCKOUT SWITCHES SHORT.......................827
PINCH SENSOR CIRCUIT OPEN .........................................828
PINCH SENSOR SIGNAL CIRCUIT SHORT TO GROUND.....................831
*POWER LIFTGATE INOPERATIVE .......................................833
POWER DOORS - SLIDING
AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN ........................834
AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT TO GROUND ...........835
CONTROL MODULE FAILURE - INTERNAL FAILURE ........................836
INCOMPLETE LATCH CINCH - NO CURRENT ..............................837
INCOMPLETE LATCH CINCH - NO PAWL TRANSITION ......................839
xvi
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TABLE OF CONTENTS - Continued
INCOMPLETE LATCH CINCH - OVERCURRENT ............................841
INCOMPLETE LATCH CINCH - PAWL SWITCH FAILURE .....................843
INCOMPLETE LATCH CINCH - RATCHET SWITCH FAILURE..................845
INCOMPLETE LATCH RELEASE - FULL OPEN SWITCH FAILURE .............848
INCOMPLETE LATCH RELEASE - NO CURRENT ...........................851
INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE ...............853
INCOMPLETE LATCH RELEASE- NO REVERSE TO UNLOAD CLUTCH.........855
INCOMPLETE LATCH RELEASE- OVERCURRENT ..........................856
INCOMPLETE LATCH RELEASE- PAWL SWITCH FAILURE ...................857
INCOMPLETE LATCH RELEASE- SECTOR GEAR RETURN FAILURE ..........859
INCOMPLETE POWER CLOSE - FULL OPEN SWITCH FAILURE...............860
INCOMPLETE POWER CLOSE - LATCH FAILURE...........................862
INCOMPLETE POWER CLOSE - MISSING HALL SIGNAL.....................868
INCOMPLETE POWER CLOSE - OVERCURRENT...........................871
INCOMPLETE POWER CLOSE - TIME OUT ................................873
INCOMPLETE POWER OPEN - FULL OPEN SWITCH FAILURE................874
INCOMPLETE POWER OPEN - LATCH FAILURE............................876
INCOMPLETE POWER OPEN - MISSING HALL SIGNAL......................881
INCOMPLETE POWER OPEN - OVERCURRENT............................884
INCOMPLETE POWER OPEN - TIME OUT .................................886
IODWAKEUPOPEN-PSD.............................................887
IOD WAKE UP PSD & PLG SHORT .......................................889
LEFT B-PILLAR SWITCH INPUT OPEN ....................................891
LEFT B-PILLAR SWITCH INPUT SHORT...................................893
LEFT B-PILLAR SWITCH INPUT STUCK ...................................894
LOOPBACK TEST FAILURE .............................................895
LOSS OF BCM MESSAGES .............................................896
LOSS OF EATX MESSAGES.............................................897
LOSS OF FCM MESSAGES .............................................898
LOSS OF SBEC MESSAGES ............................................899
OVERHEAD LEFT SWITCH INPUT STUCK.................................900
OVERHEAD RIGHT SWITCH INPUT STUCK................................901
OVERHEAD RIGHT/LEFT SWITCHES SHORT ..............................902
RIGHT B-PILLAR SWITCH INPUT OPEN...................................903
RIGHT B-PILLAR SWITCH INPUT SHORT..................................905
RIGHT B-PILLAR SWITCH INPUT STUCK..................................906
*POWER SLIDING DOOR INOPERATIVE ..................................907
POWER MIRROR – FOLDING
FOLD MIRROR OUTPUT FAILURE........................................908
PASSENGER MIRROR RELAY OUTPUT OPEN .............................910
PASSENGER MIRROR RELAY OUTPUT SHORT ............................912
UNFOLD MIRROR OUTPUT FAILURE.....................................913
*BOTH MIRRORS DO NOT UNFOLD EXCEPT WITH EITHER FRONT DOOR . . . .916
*BOTH POWER FOLDING MIRRORS DO NOT FOLD ........................917
*DRIVER FOLDING MIRROR DOES NOT FOLD.............................918
*PASSENGER FOLDING MIRROR DOES NOT FOLD ........................920
VEHICLE THEFT/SECURITY
BCM MESSAGES NOT RECEIVED........................................922
HORN INPUT STUCK...................................................923
HORN RELAY OPEN ...................................................924
HORN RELAY SHORTED TO BATTERY....................................925
xvii
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TABLE OF CONTENTS - Continued
INTERNAL EEPROM WRITE ERROR......................................927
INTERNAL TRANSMIT FAILURE..........................................928
INTERNAL ULTRASONIC FAULT .........................................929
LOOPBACK ERROR....................................................935
NO VALID MESSAGES RECEIVED........................................936
PCI BUS SHORTED TO BATTERY ........................................937
PCI BUS SHORTED TO GROUND ........................................938
PCM MESSAGES NOT RECEIVED........................................939
VEHICLE THEFT ALARM INDICATOR OUTPUT OPEN .......................940
VEHICLE THEFT ALARM INDICATOR OUTPUT SHORT ......................941
*ALARM TRIPS ON ITS OWN ............................................942
*HOOD DOES NOT TRIP VTSS ..........................................943
*LEFT FRONT DOOR DOES NOT TRIP VTSS ..............................944
*LEFT SLIDING DOOR DOES NOT TRIP VTSS .............................945
*LIFTGATE DOES NOT TRIP VTSS .......................................946
*REPEATER LAMPS INOPERATIVE WITH ALARM...........................947
*RIGHT FRONT DOOR DOES NOT TRIP VTSS .............................948
*RIGHT SLIDING DOOR DOES NOT TRIP VTSS ............................949
*VTSS INDICATOR INOPERATIVE ........................................950
*VTSS INDICATOR LAMP INOPERATIVE...................................951
*VTSS SIREN INOP ....................................................952
*VTSS WILL NOT ARM..................................................955
WINDSHIELD WIPER & WASHER
FR WIPER HI-LO RELAY OPEN ..........................................956
FR WIPER HI-LO RELAY SHORT TO BATT.................................958
FRONT WASH SWITCH INPUT STUCK....................................959
FRONT WASHER OUTPUT OPEN ........................................961
FRONT WIPER NOT PARKED............................................963
FRONT WIPER ON RELAY OPEN ........................................965
FRONT WIPER ON RELAY SHORT TO BATT ...............................966
FRONT WIPER PARK SWITCH SHORT TO GND ............................967
FRONT WIPER SWITCH MUX INPUT OPEN................................969
FRONT WIPER SWITCH MUX INPUT SHORT TO GROUND...................971
HEADLAMP WASHER RELAY OPEN ......................................973
HEADLAMP WASHER RELAY SHORT TO BATT.............................975
REAR WASH SWITCH INPUT STUCK .....................................976
REAR WASHER OUTPUT OPEN .........................................978
REAR WIPER OUTPUT OPEN ...........................................980
REAR WIPER OUTPUT SHORT TO GROUND ..............................982
REAR WIPER SWITCH MUX INPUT OPEN .................................984
REAR WIPER SWITCH MUX INPUT SHORT TO GROUND ....................986
VERIFICATION TESTS
VERIFICATION TESTS..................................................988
8.0 COMPONENT LOCATIONS..............................................995
8.1 AIRBAG SYSTEM .................................................995
8.2 BODY CONTROL MODULE.........................................996
8.3 ENGINE CONTROL MODULE .......................................996
8.4 HEATING & A/C...................................................996
8.4.1 ACTUATORS – FRONT LHD ...............................996
xviii
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TABLE OF CONTENTS - Continued
8.4.2 ACTUATOR – FRONT RHD ................................997
8.4.3 ACTUATOR – FRONT LHD ................................997
8.4.4 ACTUATOR – FRONT RHD ................................998
8.4.5 EVAPORATOR TEMPERATURE SENSOR LHD................998
8.4.6 EVAPORATOR TEMPERATURE SENSOR RHD ...............999
8.4.7 C202 CONNECTOR ......................................999
8.4.8 ACTUATORS – REAR ...................................1000
8.4.9 REAR A/C HEATER UNIT CONNECTOR ....................1000
8.5 CABIN HEATER .................................................1001
8.5.1 DIESEL CABIN HEATER ASSIST (CABIN HEATER) ASSEMBLY.1001
8.5.2 C331 CONNECTOR .....................................1001
8.5.3 C330 CONNECTOR .....................................1002
8.7 MEMORY SYSTEM...............................................1002
8.7.1 MEMORY SEAT MIRROR MEDULE/SEAT MOTORS ..........1002
8.7.2 MEMORY SEAT MIRROR MODULE CIRCUIT BREAKER.......1003
8.8 OVERHEAD SWITCHES ..........................................1003
8.9 POWER FOLDING MIRRORS ......................................1003
8.10 POWER LIFTGATE SYSTEM.......................................1004
8.10.1 MODULE ..............................................1004
8.10.2 PINCH SENSORS (TAPE SWITCH) ........................1004
8.10.3 LATCH ASSEMBLY......................................1005
8.11 POWER DOOR LOCK/RKE SYSTEM ................................1005
8.11.1 DOOR LOCK MOTOR/AJAR SWITCH ......................1005
8.11.1 CYLINDER LOCK SWITCH ...............................1005
8.11.3 REMOTE KEYLESS ENTRY MODULE ......................1006
8.12 POWER SLIDING DOOR ..........................................1006
8.12.1 MODULE ..............................................1006
8.12.2 LOWER DRIVE UNIT ....................................1006
8.12.3 LATCH ASSEMBLY......................................1007
8.13 VEHICLE THEFT SECURITY SYSTEM...............................1007
8.13.1 RKE/THATCHAM ALARM MODULE ........................1007
8.13.2 RKE/THATCHAM ALARM MODULE CONNECTORS...........1007
8.13.3 VTSS LED .............................................1008
8.13.4 VTSS SIREN ...........................................1008
8.13.5 FRONT INTRUSION SENSOR.............................1009
8.13.6 REAR INTRUSION SENSOR .............................1009
9.0 CONNECTOR PINOUTS ...............................................1011
A/C-HEATER CONTROL C1 (MTC) - BLACK/RED 20 WAY ...................1011
A/C-HEATER CONTROL C2 (MTC) - BLACK/BLUE 10 WAY ..................1011
AMBIENT TEMP SENSOR (EXCEPT BASE) - BLACK 2 WAY .................1011
ATC REMOTE SENSOR (ATC)-4WAY...................................1012
AUTO TEMP CONTROL C1 - WHITE 13 WAY..............................1012
AUTO TEMP CONTROL C2 - BLACK 13 WAY..............................1012
AUTO TEMP CONTROL C3-4WAY.....................................1012
BLOWER MOTOR RESISTOR C1 (MTC) - BLACK 6 WAY....................1013
BLOWER MOTOR RESISTOR C2 (MTC) - BLACK 2 WAY....................1013
BODY CONTROL MODULE C1 - BLACK/BLACK 6 WAY .....................1013
BODY CONTROL MODULE C2 - BLACK/GREEN 34 WAY....................1014
BODY CONTROL MODULE C3 - BLACK/WHITE 34 WAY ....................1015
BODY CONTROL MODULE C4 - BLACK/GRAY 34 WAY .....................1016
BODY CONTROL MODULE C5 - BLACK/BLACK 34 WAY ....................1017
xix
Page 23
TABLE OF CONTENTS - Continued
C200 - GRAY (BODY SIDE).............................................1018
C200 - GRAY (INSTRUMENT PANEL SIDE)................................1020
C201 - YELLOW (BODY SIDE) ..........................................1021
C201 - YELLOW (INSTRUMENT PANEL SIDE) .............................1022
C202 - GRAY (COMPONENT SIDE) ......................................1022
C202 - GRAY (INSTRUMENT PANEL SIDE)................................1023
C304 - YELLOW (BODY SIDE) ..........................................1023
C304 - YELLOW (SEAT SIDE)...........................................1023
C305 - GRAY (BODY SIDE).............................................1024
C306 - YELLOW (BODY SIDE) ..........................................1024
C306 - YELLOW (SEAT SIDE)...........................................1024
C307 - GRAY (BODY SIDE).............................................1024
C307 - GRAY (SEAT SIDE) .............................................1025
C311 - GRAY (BODY SIDE) .............................................1025
C311 - GRAY (REAR A/C JUMPER SIDE) .................................1026
C314 (HIGH LINE) - BLACK (BODY SIDE).................................1026
C314 (HIGH LINE) - BLACK (LIFTGATE SIDE) .............................1027
C315 (HIGH LINE) - BLACK (BODY SIDE).................................1027
C315 (HIGH LINE) - BLACK (LIFTGATE SIDE) .............................1027
C316 (POWER SLIDING DOOR) - BLACK (LEFT DOOR WIRE TRACK ASSEMBLY
SIDE) ...............................................................1028
C316 (POWER SLIDING DOOR) - BLACK (LEFT SLIDING DOOR SIDE)........1028
C317 (POWER SLIDING DOOR) - BLACK (RIGHT DOOR WIRE TRACK ASSEMBLY
SIDE) ...............................................................1028
C317 (POWER SLIDING DOOR) - BLACK (RIGHT SLIDING DOOR SIDE) ......1028
C322 (MEMORY) - BLACK (BODY SIDE)..................................1029
C322 (MEMORY) - BLACK (POWER SEAT SIDE)...........................1029
C324 (MANUAL SLIDING DOOR) - BLACK (LEFT DOOR WIRE TRACK ASSEMBLY
SIDE................................................................1029
C324 (MANUAL SLIDING DOOR) - BLACK (LEFT MANUAL SLIDING DOOR
SIDE) ...............................................................1030
C325 (MANUAL SLIDING DOOR) - BLACK (RIGHT DOOR WIRE TRACK ASSEMBLY
SID.................................................................1030
C325 (MANUAL SLIDING DOOR) - BLACK (RIGHT MANUAL SLIDING DOOR
SIDE) ...............................................................1030
C326 - YELLOW (SAFETY SEAT SIDE) ...................................1030
C326 - YELLOW (SEAT SIDE)...........................................1030
C327 - YELLOW (SAFETY SEAT SIDE) ...................................1031
C327 - YELLOW (SEAT SIDE)...........................................1031
C330 (DIESEL) - GRAY (CABIN HEATER JUMPER SIDE) ....................1031
C330 (DIESEL) - LT. GRAY (BODY SIDE)..................................1031
C331 (DIESEL) - BLACK (CABIN HEATER JUMPER SIDE) ...................1031
C331 (DIESEL) - GRAY (CABIN HEATED COMPONENT SIDE)................1032
CABIN HEATER ASSIST C1 (DIESEL) - BLACK 6 WAY ......................1032
CABIN HEATER ASSIST C2 (DIESEL) - BLACK 2 WAY ......................1032
CD CHANGER-8WAY................................................1033
CENTER DOME LAMP (BASE/HIGH LINE) - GRAY 3 WAY ...................1033
CLOCKSPRING C1 - WHITE 6 WAY......................................1033
CLOCKSPRING C2 - YELLOW 4 WAY ....................................1034
CLOCKSPRING C4 - BLACK 2 WAY......................................1034
CLOCKSPRING C5 - YELLOW 4 WAY ....................................1034
CONTROLLER ANTILOCK BRAKE - BLACK 24 WAY........................1035
DATA LINK CONNECTOR - BLACK 16 WAY ...............................1035
xx
Page 24
TABLE OF CONTENTS - Continued
DIAGNOSTIC JUNCTION PORT - BLACK 16 WAY ..........................1036
DOSING PUMP - BLACK 2 WAY.........................................1036
DRIVER AIRBAG C1 - BROWN 2 WAY....................................1036
DRIVER AIRBAG C2 - BLACK 2 WAY.....................................1036
DRIVER BLEND DOOR ACTUATOR (ATC) - GRAY 2 WAY ...................1037
DRIVER BLEND DOOR ACTUATOR (MTC) - GRAY 2 WAY...................1037
DRIVER DOOR LOCK SWITCH - BLACK 3 WAY ...........................1037
DRIVER SEAT BELT SWITCH - WHITE 2 WAY .............................1037
DRIVER SEAT BELT TENSIONER-2WAY................................1038
ELECTRIC WIPER DE-ICER C1 - WHITE 2 WAY ...........................1038
ELECTRIC WIPER DE-ICER C2 - WHITE 2 WAY ...........................1038
ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAY.................1039
ENGINE CONTROL MODULE C2 (DIESEL) - BLACK 40 WAY.................1041
EVAPORATOR TEMPERATURE SENSOR - BLACK 2 WAY...................1041
FRONT BLOWER MODULE C1 (ATC) - BLACK 4 WAY ......................1042
FRONT BLOWER MODULE C2 (ATC) - BLACK 2 WAY ......................1042
FRONT READING LAMPS/SWITCH - BLACK 6 WAY ........................1042
GLOVE BOX LAMP - BLUE 2 WAY.......................................1042
HALO LAMP - BLUE 2 WAY.............................................1042
HEADLAMP SWITCH - BLACK 13 WAY...................................1043
HEADLAMP WASHER PUMP MOTOR (BUILT-UP-EXPORT) - BLACK 2 WAY . . . .1043
IGNITION SWITCH - BLACK 5 WAY......................................1043
INSTRUMENT CLUSTER - BLACK 13 WAY................................1044
INTELLIGENT POWER MODULE C1 - LT. GREEN/RED 20 WAY ..............1044
INTELLIGENT POWER MODULE C2 - GREEN/BLUE 10 WAY ................1045
INTELLIGENT POWER MODULE C3 (DIESEL) - YELLOW/RED 20 WAY........1045
INTELLIGENT POWER MODULE C3 (GAS) - NATURAL/RED 20 WAY..........1046
INTELLIGENT POWER MODULE C4 - BLUE 10 WAY .......................1046
INTELLIGENT POWER MODULE C5 - BLACK 4 WAY .......................1046
INTELLIGENT POWER MODULE C6 - NATURAL 10 WAY....................1047
INTELLIGENT POWER MODULE C7 - BLACK/RED 20 WAY..................1047
INTELLIGENT POWER MODULE C8 - ORANGE 10 WAY ....................1048
INTELLIGENT POWER MODULE C9 - BLACK 10 WAY ......................1048
LEFT B-PILLAR SWITCH - GRAY 3 WAY..................................1048
LEFT CINCH/RELEASE MOTOR (POWER SLIDING DOOR) - GRAY 4 WAY.....1048
LEFT CYLINDER LOCK SWITCH - BLACK 2 WAY ..........................1049
LEFT DOOR SPEAKER - BLACK/RED 6 WAY..............................1049
LEFT FOG LAMP - WHITE 2 WAY .......................................1049
LEFT FRONT DOOR AJAR SWITCH (BASE) - BLACK 2 WAY.................1049
LEFT FRONT DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) -
BLACK 4 WAY........................................................1050
LEFT FRONT PARK/TURN SIGNAL LAMP (EXCEPT BUILT-UP-EXPORT) -
BLACK 3 WAY........................................................1050
LEFT FULL OPEN SWITCH (POWER SLIDING DOOR) - BLACK 2 WAY ........1050
LEFT HEADLAMP (EXCEPT BUILT-UP-EXPORT) - BLACK 3 WAY.............1050
LEFT HIGH BEAM LAMP (BUILT-UP-EXPORT) - BLACK 2 WAY...............1051
LEFT INSTRUMENT PANEL SPEAKER - BLACK 2 WAY .....................1051
LEFT LOW BEAM LAMP (BUILT-UP-EXPORT) - BLACK 2 WAY ...............1051
LEFT PARK LAMP (BUILT-UP-EXPORT) - BLACK 2 WAY ....................1051
LEFT POWER MIRROR - BLACK 12 WAY .................................1052
LEFT REAR PILLAR SPEAKER - BLACK 2 WAY............................1052
LEFT REAR READING LAMP (LUXURY) - GRAY 3 WAY .....................1052
LEFT REAR SPEAKER - BLACK/RED 6 WAY ..............................1052
xxi
Page 25
TABLE OF CONTENTS - Continued
LEFT REMOTE RADIO SWITCH - BLACK 2 WAY...........................1053
LEFT SEATAIRBAG - YELLOW 2 WAY ...................................1053
LEFT SIDE IMPACT AIRBAG CONTROL MODULE - YELLOW/RED 7 WAY......1053
LEFT SLIDING DOOR CONTROL MODULE C1 (POWER SLIDING DOOR) -
BLACK 8 WAY........................................................1053
LEFT SLIDING DOOR CONTROL MODULE C2 (POWER SLIDING DOOR) -
BLACK/RED 20 WAY ..................................................1054
LEFT SLIDING DOOR LATCH SENSING SWITCH (POWER SLIDING DOOR) -
BLACK 6 WAY........................................................1054
LEFT SLIDING DOOR LOCK MOTOR (POWER SLIDING DOOR) - BLACK 4
WAY................................................................1054
LEFT SLIDING DOOR LOCK MOTOR/AJAR SWITCH (MANUAL
SLIDING DOOR) - BLACK 4 WAY........................................1055
LEFT SLIDING DOOR MOTOR (POWER SLIDING DOOR) - BLACK 8 WAY .....1055
LEFT STOP/TURN SIGNAL RELAY (TRAILER TOW) - BLACK 5 WAY ..........1055
LEFT VISOR/VANITY LAMP (PREMIUM/LUXURY) - BLACK 2 WAY ............1055
LICENSE LAMP (POWER LIFTGATE) - DK. GRAY 8 WAY....................1056
LICENSE LAMP (POWER RELEASE) - DK. GRAY 4 WAY....................1056
LIFTGATE AJAR SWITCH (MANUAL RELEASE) - BLACK 2 WAY..............1056
LIFTGATE AJAR SWITCH (POWER RELEASE) - BLACK 4 WAY ..............1056
LIFTGATE CINCH/RELEASE MOTOR (POWER LIFTGATE) - BLUE 7 WAY......1057
LIFTGATE CYLINDER LOCK SWITCH - BLACK 2 WAY......................1057
LIFTGATE LEFT PINCH SENSOR (POWER LIFTGATE) - BLACK 2 WAY........1057
LIFTGATE RIGHT PINCH SENSOR (POWER LIFTGATE) - BLACK 2 WAY ......1057
MEMORY POWER SEAT SWITCH - GREEN 10 WAY........................1058
MEMORY SEAT FRONT VERTICAL MOTOR - RED 2 WAY...................1058
MEMORY SEAT FRONT VERTICAL POSITION SENSOR - BLACK 3 WAY ......1058
MEMORY SEAT HORIZONTAL MOTOR - BLACK 2 WAY.....................1058
MEMORY SEAT HORIZONTAL POSITION SENSOR - BLACK 3 WAY...........1058
MEMORY SEAT REAR VERTICAL MOTOR - RED 2 WAY ....................1059
MEMORY SEAT REAR VERTICAL POSITION SENSOR - BLACK 3 WAY........1059
MEMORY SEAT RECLINER MOTOR - GREEN 2 WAY.......................1059
MEMORY SEAT RECLINER POSITION SENSOR - BLACK 3 WAY.............1059
MEMORY SEAT SWITCH - BLACK 2 WAY.................................1059
MEMORY SEAT/MIRROR MODULE C1 - GRAY 2 WAY ......................1060
MEMORY SEAT/MIRROR MODULE C2 - GRAY 26 WAY .....................1060
MEMORY SEAT/MIRROR MODULE C3 - GRAY 16 WAY .....................1060
MEMORY SEAT/MIRROR MODULE C4 - WHITE 12 WAY ....................1061
MODE DOOR ACTUATOR (ATC) - GRAY 2 WAY ...........................1061
MODE DOOR ACTUATOR (MTC) - GRAY 2 WAY ...........................1061
MULTI-FUNCTION SWITCH - BLACK 4 WAY...............................1061
OCCUPANT RESTRAINT CONTROLLER - YELLOW/RED 23 WAY.............1062
OVERHEAD CONSOLE (EXCEPT BASE) - BLACK 12 WAY ..................1062
PASSENGER AIRBAG - YELLOW 4 WAY..................................1063
PASSENGER BLEND DOOR ACTUATOR (ATC) - GRAY 2 WAY ...............1063
PASSENGER BLEND DOOR ACTUATOR (MTC) - GRAY 2 WAY...............1063
PASSENGER DOOR LOCK SWITCH - BLACK 3 WAY .......................1063
PASSENGER FOLDING MIRROR RELAY (BUILT-UP-EXPORT) - BLUE 9 WAY . .1064
PASSENGER SEAT BELT SWITCH-2WAY...............................1064
PASSENGER SEAT BELT TENSIONER-2WAY............................1064
FUSES (IPM).........................................................1066
ACCESSORY RELAY ..................................................1066
DEFOGGER RELAY...................................................1066
xxii
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TABLE OF CONTENTS - Continued
FRONT BLOWER MOTOR RELAY .......................................1066
FRONT CONTROL MODULE - BLACK 49 WAY.............................1067
FRONT FOG LAMP RELAY .............................................1068
HEADLAMP WASHER RELAY (BUILT-UP-EXPORT).........................1068
NAME BRAND SPEAKER RELAY ........................................1068
PARK LAMP RELAY ...................................................1068
POSITIVE TEMPERATURE COEFFICIENTS ...............................1068
REAR BLOWER MOTOR RELAY ........................................1068
POWER FOLDING MIRROR SWITCH (BUILT-UP-EXPORT) - BLACK 2 WAY . . . .1069
POWER LIFTGATE MODULE C1 - BLACK 8 WAY ..........................1069
POWER LIFTGATE MODULE C2 - BLACK/RED 20 WAY.....................1069
POWER LIFTGATE MOTOR - BLACK 10 WAY .............................1070
POWER SEAT CIRCUIT BREAKER (30A) - GRAY 2 WAY ....................1070
POWERTRAIN CONTROL MODULE C1 (2.4L/3.3L/3.8L) - GRAY/BLACK
40-WAY .............................................................1071
POWERTRAIN CONTROL MODULE C2 (2.4L/3.3L/3.8L) - GRAY/GRAY 40 WAY .1072
RADIO C1 - GRAY 7 WAY ..............................................1073
RADIO C2 - BLACK 7 WAY .............................................1073
RADIO C3 - WHITE/RED 2 WAY.........................................1073
RADIO C4-8WAY....................................................1074
RADIO CHOKE - LT. GRAY 2 WAY.......................................1074
REAR A/C-HEATER UNIT (3 ZONE HVAC) - LT. GREEN 10 WAY..............1074
REAR AUTO TEMP CONTROL SWITCH (ATC) - BLACK 13 WAY ..............1075
REAR BLOWER MOTOR POWER MODULE C1 (ATC) - RED/BLACK 4 WAY . . . .1075
REAR BLOWER MOTOR POWER MODULE C2 (ATC) - BLACK 2 WAY.........1075
REAR DOME LAMP (EXCEPT LUXURY) - GRAY 3 WAY.....................1075
REAR MODE MOTOR (ATC) - GRAY 2 WAY ...............................1076
REAR TEMPERATURE MOTOR (ATC) - GRAY 2 WAY.......................1076
RECIRCULATION DOOR ACTUATOR (ATC) - GRAY 2 WAY ..................1076
RECIRCULATION DOOR ACTUATOR (MTC) - GRAY 2 WAY..................1076
REMOTE KEYLESS ENTRYANTENNA (JAPAN) - BLACK 2 WAY..............1077
REMOTE KEYLESS ENTRY MODULE - BLACK/RED 6 WAY .................1077
RIGHT B-PILLAR SWITCH - GRAY 3 WAY.................................1077
RIGHT CINCH/RELEASE MOTOR (POWER SLIDING DOOR) - GRAY 4 WAY. . . .1077
RIGHT CYLINDER LOCK SWITCH - BLACK 2 WAY .........................1078
RIGHT DOOR SPEAKER - BLACK/RED 6 WAY ............................1078
RIGHT FOG LAMP - WHITE 2 WAY ......................................1078
RIGHT FRONT DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) -
BLACK 4 WAY........................................................1078
RIGHT FRONT PARK/TURN SIGNAL LAMP (EXCEPT BUILT-UP-EXPORT) -
BLACK 3 WAY........................................................1079
RIGHT FULL OPEN SWITCH (POWER SLIDING DOOR) - BLACK 2 WAY.......1079
RIGHT HEADLAMP (EXCEPT BUILT-UP-EXPORT) - BLACK 3 WAY............1079
RIGHT HIGH BEAM LAMP (BUILT-UP-EXPORT) - BLACK 2 WAY..............1079
RIGHT INSTRUMENT PANEL SPEAKER - BLACK 2 WAY....................1080
RIGHT LOW BEAM LAMP (BUILT-UP-EXPORT) - BLACK 2 WAY..............1080
RIGHT PARK LAMP (BUILT-UP-EXPORT) - BLACK 2 WAY ...................1080
RIGHT POWER MIRROR - BLACK 12 WAY................................1080
RIGHT REAR PILLAR SPEAKER - BLACK 2 WAY ..........................1081
RIGHT REAR SPEAKER - BLACK/RED 6 WAY .............................1081
RIGHT REMOTE RADIO SWITCH - BLACK 2 WAY .........................1081
RIGHT SEATAIRBAG - YELLOW 2 WAY ..................................1081
RIGHT SIDE IMPACT AIRBAG CONTROL MODULE - YELLOW/RED 7 WAY.....1081
xxiii
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TABLE OF CONTENTS - Continued
RIGHT SLIDING DOOR CONTROL MODULE C1 (POWER SLIDING DOOR) - BLACK
8WAY..............................................................1082
RIGHT SLIDING DOOR CONTROL MODULE C2 (POWER SLIDING DOOR) -
BLACK/RED 20 WAY ..................................................1082
RIGHT SLIDING DOOR LATCH SENSING SWITCH (POWER SLIDING DOOR) -
BLACK 6 WAY........................................................1082
RIGHT SLIDING DOOR LOCK MOTOR (POWER SLIDING DOOR) - BLACK 4
WAY................................................................1083
RIGHT SLIDING DOOR LOCK MOTOR/AJAR SWITCH (MANUAL SLIDING DOOR) -
BLACK 4 WAY........................................................1083
RIGHT SLIDING DOOR MOTOR (POWER SLIDING DOOR) - BLACK 8 WAY . . . .1083
SENTRY KEY IMMOBILIZER MODULE - BLACK 6 WAY .....................1083
SIREN (UNITED KINGDOM) - BLACK 4 WAY ..............................1083
THATCHAM ALARM MODULE C1 (UNITED KINGDOM) - BLACK 16 WAY.......1084
THATCHAM ALARM MODULE C2 (UNITED KINGDOM) - WHITE 4 WAY........1084
TRANSMISSION CONTROL MODULE (EATX) - BLACK 60 WAY ..............1085
TXV SOLENOID (ATC)-2WAY .........................................1086
10.0 SCHEMATIC DIAGRAMS...............................................1087
10.1 AIRBAG SYSTEM ................................................1087
10.2 AUDIO SYSTEM .................................................1088
10.2.1 PREMIUM .............................................1088
10.2.2 BASE .................................................1089
10.2.3 CD CHANGER .........................................1090
10.2.4 REMOTE RADIO CONTROLS.............................1091
10.3 CABIN HEATER .................................................1092
10.4 AUTOMATIC TEMPERATURE CONTROL SYSTEM ....................1093
10.4.1 FRONT ATC............................................1093
10.4.2 REAR ATC.............................................1094
10.5 COMMUNICATION ...............................................1095
10.5.1 PCM COMMUNICATION .................................1096
10.5.2 ECM & CABIN HEATER ASSIST COMMUNICATION - DIESEL
ONLY.................................................1096
10.6 DOOR AJAR WITH POWER SLIDING DOORS ........................1097
10.7 DOOR AJAR WITHOUT POWER SLIDING DOORS ....................1098
10.8 EXTERIOR LIGHTING ............................................1099
10.9 IGNITION SWITCH ...............................................1100
10.10 INSTRUMENT CLUSTER — BASE ..................................1101
10.11 INSTRUMENT CLUSTER & MESSAGE CENTER ......................1102
10.12 INTELLIGENT POWER MODULE/BODY CONTROL MODULE POWER AND
GROUNDS......................................................1103
10.13 INTERIOR LIGHTING .............................................1104
10.14 MANUAL TEMPERATURE CONTROLS ..............................1105
10.14.1 BASE MANUAL TEMPERATURE CONTROL SYSTEM LHD.....1105
10.14.2 BASE MANUAL TEMPERATURE CONTROL SYSTEM RHD ....1106
10.14.3 DUAL-ZONE MANUAL TEMPERATURE CONTROL SYSTEM
LHD ..................................................1107
10.14.4 DUAL-ZONE MANUAL TEMPERATURE CONTROL SYSTEM
RHD..................................................1108
10.14.5 BLOWER MOTOR.......................................1109
10.15 MEMORY SYSTEM ...............................................1110
10.16 OVERHEAD CONSOLE ...........................................1111
xxiv
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TABLE OF CONTENTS - Continued
10.17 POWER FOLDING MIRROR LHD ...................................1112
10.18 POWER FOLDING MIRROR RHD...................................1113
10.19 POWER DOOR LOCKS/RKE .......................................1114
10.20 POWER LIFTGATE SYSTEM .......................................1115
10.21 POWER SLIDING DOOR SYSTEM ..................................1116
10.22 REAR DEFOG/HEATED MIRROR/FRONT WIPER DE-ICE ...............1117
10.23 SLIDING DOOR AND LIFTGATE SWITCHES ..........................1118
10.24 VEHICLE THEFT SECURITY SYSTEM...............................1119
10.24.1 BASE ALARM SYSTEM ..................................1119
10.24.2 THATCHAM ALARM SYSTEM .............................1120
10.25 WIPERS - FRONT AND REAR......................................1121
11.0 CHARTS AND GRAPHS ...............................................1122
11.1 KDB LAB SCOPE PATTERN .......................................1123
11.2 PCI BUS LAB SCOPE PATTERN....................................1124
xxv
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NOTES
xxvi
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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 2001 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
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:
• Airbag
• Audio
• Cabin Heater
• Chime
• Communication
• Door Ajar System
• Electrically heated system
• Exterior lighting
• Heating and A/C
• Instrument Cluster
• Interior Lighting
• Manual Temperature Control
• Memory Seat
• Overhead Console
• Power Door Lock/RKE
• Power Folding Mirrors
• Power Sliding Doors
• Power Liftgate
• Power windows
• Vehicle Theft Security System (VTSS)
• Windshield Wiper and Washer
This diagnostic procedures manual covers all
2001 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.
3.0 SYSTEM DESCRIPTION AND
FUNCTIONAL OPERATION
The body system on the 2001 RG consists of a
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 the information trans-
1
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GENERAL INFORMATION
mitted 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 AIRBAG SYSTEM/OCCUPANT
RESTRAINT CONTROLLER SYSTEM
The 2001 Minivan Airbag System contain the
following components: Occupant Restraint Controller (ORC), Airbag Warning Indicator, Clockspring,
Driver and Passenger Airbags, Seat belt Tensioners
(SBT), Hall-effect Seat Belt Switches (SBS), Left
and Right Side Airbag Control Module (SIACM),
and Seat (mounted side) Airbags.
The Occupant Restraint Controller (ORC) is a
new type of Airbag Control Module (ACM) that
supports staged airbag deployment. Staged deployment is the ability to trigger airbag system squib
inflators all at once or 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 and
must be replaced.
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
impact sensor signal and the airbag system electrical circuits to determine the system readiness. The
ORC also monitors bus messages from both SIACM.
If the ORC detects a monitored system fault or
SIACM fault, it sends a message to the instrument
cluster via PCI bus to turn on the airbag warning
indicator. The ORC can set both active and stored
diagnostic trouble codes to aid in the diagnosing
system problems. See ORC/SIACM DIAGNOSTIC
TROUBLE CODES in this section.
The ORC has an internal accelerometer that
senses the rate of vehicle deceleration, which pro-
vides 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 Occupant Restraint Controller (ORC) also uses the driver and front passenger
seat belt switch status (buckled or unbuckled) as
inputs to determine the level of airbag deployment,
low, medium, or high as well as whether or not the
seat belt tensioners should deploy. The ORC also
uses the crash severity to determine the level of
driver and front passenger 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 COULD RESULT IS 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 ACCIDENTALLY
DROPPED 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 symptoms of a
system malfunction. Whenever the ignition key is
turned to the run or start position, the MIC performs a lamp check by turning the airbag warning
indicator on for 6-8 seconds. After the lamp check, if
the indicator turns on, 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 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.
2
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GENERAL INFORMATION
3.1.1 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. The airbag module includes a housing to
which the cushion and hybrid inflator are attached
and sealed. The 2001 Minivan is equipped with
driver airbag with dual stage inflators that include
a small canister of highly compressed argon gas.
The Occupant Restraint Controller (ORC) uses vehicle crash severity, driver seat belt switch status
(buckled or unbuckled) as inputs to determine the
level of airbag deployment. When supplied with the
proper electrical signal, the hybrid inflator or inflators discharge the compressed gas it contains 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.
CAUTION: Deployed Front Air Bags may or may not have live pyrotechnic material within the
air bag inflator. Do not dispose of 2001 Model Year 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
Driver Squib 1 open
Driver Squib 2 open
Driver Squib 1 open
Driver Squib 2 open
If Driver Squib 1 open AND IF Driver Squib 2 opens is NOT an active
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.
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.
If Driver Squib 2 open AND IF Driver Squib 1 open is NOT an active
code.
3
Driver Squib 1 is live;
Driver Squib 2 was
used.
Page 33
GENERAL INFORMATION
If neither of the following codes is an active code:
ACTIVE DTC SQUIB STATUS
Driver squib 1 open Status of Airbag is
Driver Squib 2 open Unknown.
3.1.2 CLOCKSPRING
The clockspring is mounted on the steering column behind the steering wheel. This assembly
consist 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.
3.1.3 PASSENGER AIRBAG
The airbag door in the instrument panel top cover
the glove box is the most visible part of the passenger side airbag system. The airbag door has a living
hinge at the top, which is secured to the instrument
panel top cover. Located under the airbag door is
the airbag cushion and its supporting components.
The airbag module includes a housing to which the
cushion and hybrid inflators are attached and
sealed. The 2001 Minivan is equipped with front
passenger airbag with dual stage inflators that
include a small canister of highly compressed argon
gas. The ORC uses vehicle crash severity, front
passenger seat belt switch status (buckled or unbuckled) inputs to determine the level of airbag
deployment. When supplied with the proper electrical signal, the hybrid inflator or inflators discharge
the compressed gas it contains directly into the
cushion. The airbag module cannot be repaired, and
must be replaced if deployed or in any way damaged.
WARNING: THE PASSENGER AIRBAG
MODULE CONTAINS ARGON 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.
4
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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 2001 Mopar Year 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
Passenger Squib 1 open
Passenger Squib 2 open
Passenger Squib 1 open
Passenger Squib 2 open
Passenger Squib 1 open
Passenger Squib 2 open
If Passenger Squib 1
open
If Passenger Squib 2
open
If neither of the following codes is an active code:
ACTIVE DTC SQUIB STATUS
Passenger squib 1 open Status of Airbag is
Passenger squib 2 open Unknown.
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.
3.1.4 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 removed, the
occupant’s forward motion in an impact will be
reduced as will the likelihood of contacting repaired, if damaged or defective it must be replaced.
The ORC continuously monitors the resistance of
the seat belt tensioner circuits an open or shorted
conditions.
3.1.5 SEAT BELT SWITCHES (SBS)
The hall-effect driver and front passenger seat
belt switches provide the seat belt status, buckled
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.
or unbuckled, via hardwired inputs to the ORC. The
ORC uses seat belt switch inputs to determine the
appropriate level of airbag deployment. If the seat
belt switches are damaged or defective the seat belt
tensioner must be replaced. The ORC continuously
monitors the seat belt switch circuits for an open or
shorted conditions.
3.1.6 SIDE IMPACT AIRBAG CONTROL
MODULE (SIACM)
Supplemental driver and front passenger seat
airbags provide side impact protection for the front
seat occupants. Each side airbag has it own side
impact airbag control module (SIACM) to provide
independent impact sensing and deployment. SIACM are located on the left and right B post just
above the seat belt retractor. One, same part number, side impact airbag control module (SIACM) is
used on both side of the vehicle. However,for proper
PCI bus operation each SIACM must have a unique
module identification. To provide the unique module identification for both, left and right, the
SIACM software looks for a ground on cavity 5 of
the SIACM connector. If cavity 5 is grounded the
SIACM communicates as a left SIACM otherwise it
communicates as a right SIACM. The SIACM performs self diagnostics and circuit tests to determine
5
Page 35
GENERAL INFORMATION
if the system is functioning properly. If the test
finds a problem the SIACM will set both active and
stored diagnostic trouble codes. If a DTC is active
the SIACM will request that the airbag warning
lamp be turned on. The results of the system test
are transmitted on the PCI Bus to the ORC once
each second or on change in lamp state. If the
warning lamp status message from the either SIACM contains a lamp on request, the ORC will set
an active DTC. At the same time as the DTC is set
the ORC sends a PCI Bus message to the mechanical instrument cluster (MIC) requesting the airbag
warning lamp be turned on. Observe all ORC warning and caution statements when servicing or handling the SIACM. SIACM are not repairable and
must be replaced if they are dropped.
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 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 ACCIDENTALLY
DROPPED 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 symptoms of a
system malfunction. Whenever the ignition key is
turned to the run or start position, the MIC performs a lamp check by turning the airbag warning
indicator on for 6-8 seconds. After the lamp check, if
the indicator turns on, it means that the ORC has
checked the system and found it to be free of
discernible malfuctions. 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.
3.1.7 SEAT AIRBAGS (SAB)
The left and right seat airbag modules are located
in the outboard end of the front seat backs. The
airbag module contains a bag, an inflator (a small
canister of highly compressed argon gas) and a
mounting bracket. The seat airbag module cannot
be repaired and must be replaced if deployed or in
any way damaged. When supplied with the proper
electrical signal the inflator seals the hole in the
airbag cushion so it can discharge the compressed
gas it contains directly into the cushion. Upon
deployment, the seat back trim cover will tear open
and allow the seat airbag to fully deploy between
the seat and the door.
WARNING: SEATAIRBAG 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 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
MOPAR PARTS CATALOG.
3.1.8 ORC/SIACM 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.
Always begin diagnostic with the Table of Contents
6
Page 36
GENERAL INFORMATION
section 7.0. 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.
3.1.9 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 airbag control module checks that
circuit or component. 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.
3.1.10 STORED CODES
Airbag codes are automatically stored in the
ORC’s memory as soon as the malfunction is detected. The exception is the Loss of Ignition Run
Only code which is an active code only.A stored 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 code
could be active. When a trouble code occurs, the
airbag warning indicator 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 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. If the malfunction reoccurs
before the count reaches 100, then the ignition cycle
counter will be reset and 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 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.
3.2 AUDIO SYSTEM
The following radios are all on the PCI Bus
system - RBB, RBK, RAZ, RAD, RBT,and RBY.The
remaining radio also available, the RAS, is NOT on
the PCI Bus. 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 RBB and RBK 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, except the RAS, 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:
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. The output DTC
could refer to the front or rear output or a left or
right output. The reason for the difference is the
pairing of the output sections of the radio. Some are
paired left and right, others are paired front and
rear.
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
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GENERAL INFORMATION
this type of system would only refer to this circuit.
A faulty speaker could not cause this DTC.
3.2.1 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.
3.2.2 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 thru 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 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 only, the transmission control module (TCM),
the mechanical instrument cluster (MIC), the front
control module (FCM), the occupant restraint controller (ORC), the compass/mini-trip (CMTC), the
electronic vehicle information center (EVIC), the
controller antilock brake (CAB), the HVAC control
module (ATC & MTC), the power sliding door (Left
& Right) modules (PSD), the power liftgate module
(PLG), the Audio system, the side impact airbag
control (left & right) modules (SIACM), the memory
seat/mirror module (MSMM), the RKE/thatcham
alarm module and the sentry key immobilizer module (SKIM). 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
• Compass/Minitrip Support
• Interior Lighting (Courtesy/Reading Lamps)
• BCM Diagnostic Reporting
• Electronic Liftgate Release (with Power Door
Locks)
• Exterior Lighting
• Power Folding Mirrors
• Remote Radio Controls
• Headlamp Time Delay (with/without Autohead-
lamps)
• Automatic Headlamps (with electrochromatic
mirror)
• Illuminated Entry
• Fade to Off
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GENERAL INFORMATION
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 are B-Pillar
switches located on the Left and Right B-pillar
posts.
• 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.
3.4 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.
3.4.1 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.
3.4.2 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,
Sounds for approximately 662
secondswhenthe igntionisturned
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 timeof15 minutes has expired.
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GENERAL INFORMATION
Turn Signal On: When the BCM detects a turn
signal input continuously for
1.0mile/0.6km and the vehicle
speed is greater than 15 mph/
24kph,the chimewillsounduntil
the specific turn signal is cancelled.
Dome Lights On: Ignition is in the lock position,
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
protectiontime of 15 minutes has
expired.
Low Oil Pres-
Engine
Temperature
Critical:
Low Washer
Fluid
Warning Lamp
Announcement:
High-speed
warning Gulf
Coast Countries
(GCC) only
The chime will sound when the
sure:
engine is operating and the oil
pressuredropsbelow4psi/27.5kPa.
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.
The chime will sound when the
washer fluid drops below a specific level.
A chime will sound to alert the
driver to scan the instrument
panel to see which warning lamp
is illuminated. The door/liftgate
ajar warning lamp will appear
without a chime if the vehicle is
runninganda door or the liftgate
is opened. A chime will sound if
the door or liftgate is still open
and the vehicle speed is greater
than 4mph/6kph.
The chime will sound, acting as a
warning to the driver that the
vehicle speed has exceed
75mph62/120kph63.
3.4.3 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:
Headlight Out
Lamp:
Liftgate Ajar
Lamp:
Fasten Seat Belt
Lamp:
Check Engine
Lamp:
Low Washer
Fluid Lamp:
Engine Tempera-
ture Lamp:
The cluster will request a single
chime after illuminating the indicator above 450rpm vehicle operation.
The cluster will request a single
chime after the indicator is illuminated.
The BCM determines when to
chime for liftgate ajar.
TheBCMwillrequestfive chimes
from the MIC when the ignition
is turned to the unlock/run/start
positions if the driver seat belt is
not buckled.
The cluster will request a single
chime after the indicator is illuminated.
The cluster will request a single
chime after the indicator is illuminated.
The cluster will request a single
chime when the indicator is first
illuminated at 252°F/122C.
3.4.4 OTHER CHIME ON CONDITIONS
Bulb Check: The chime will sound threetimes
during bulb check.
Programming of
an Additional
Key Fob:
Programming for
Rolling Door
Locks:
Adoubleclusterchimewillsound,
which signals that the program
mode has been initiated.
Whenthe programming has been
completed, a single tone from the
chime system, will occur.
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GENERAL INFORMATION
3.5 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.
One splice called the Diagnostic Junction Port,
serves as the “Hub” of the bus. The Diagnostic
Junction Port provides an access point to isolate
most of the modules on the bus in order to assist in
diagnosing the circuit. The following modules are
used on the RG:
• Body Control Module
• Front Control Module
• Occupant Restraint Controller
• Left Side Impact Airbag Control Module
• Right Side Impact Airbag Control Module
• Controller Antilock Brake
• Powertrain Control Module
• Engine Control Module - Diesel Only
• Radio
• CD Changer
• Transmission Control Module
• Automatic Temperature Control Module
• A/C Heater Control Module (MTC)
• Sentry Key Immobilizer Module
• RKE/Thatcham Alarm Module
• Memory Seat/Mirror Module
• Overhead Console
• Mechanical Instrument Cluster
• Left Sliding Door Control Module
• Right Sliding Door Control Module
• Power Liftgate Module
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 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 circuit at either the Diagnostic
Junction Port or 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
• No response received from any module on the PCI
bus (except the PCM)
• 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 suspected, 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.
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GENERAL INFORMATION
3.7 EXTERIOR LIGHTING SYSTEM
3.7.1 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.
3.7.2 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.
3.6 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.
3.7.3 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.
3.7.4 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.
3.7.5 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
3.7.6 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.
3.7.7 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.
3.8 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
Intelligent 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
• Side airbag system
• Headlamp power
• EATX module power (4 speed only)
• Front washer motor
• Rear washer motor
• 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
• Electronic back light (EBL) run only relay
• Cabin heater 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
3.8.1 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.
Side airbag system
The FCM provides power to the Side Impact
Airbag Control Module (SIACM) system through
one “fuseless” circuit. This circuit is electronically
controlled and continuously monitored for malfunctions. Power is supplied in the ignition RUN and
START positions on pin 28 of the FCM connector.
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 (RH low on pin
6, RH high on pin 4, LH low on pin 3 and LH high
on pin 5). For vehicles equipped with Daytime
Running Lamps (DRL), the FCM electronically
steps down the headlamp voltage to provide the
desired illumination.
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GENERAL INFORMATION
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
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. The low side circuit is connected to pin 45 in
the FCM connector.
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. The low side circuit is connected to pin 46 in
the FCM connector.
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.
3.8.2 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
on pin 33 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 on pin 13 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 on pin 14 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 on pin 34 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
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.
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GENERAL INFORMATION
Front and rear blower relay
The blower control switch is part of the Automatic
Temperature Control (ATC) or A/C-Heater Control
Module, (Manual Temp). When the blower switch is
turned on, the ATC or A/C-Heater Control Module
sends a PCI Bus message to the FCM. The front and
rear blower relay is then powered through low side
control on pin 30 of the FCM. The relay provides the
high side to the blower motor, and the blower speed
is governed through low side control in the ATC or
A/C-Heater Control Module. 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 or A/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.
Cabin Heater Relay
When the ignition is in Run, the FCM monitors
the PCI bus for the Cabin Heater Activation request. The A/C – Heater Control Module initiates
this request only when all conditions for 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.
3.8.3 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
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
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GENERAL INFORMATION
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.
3.9 HEATING & A/C
3.9.1 AUTOMATIC TEMPERATURE
CONTROL (ATC)
3.9.1.1 CABIN HEATER
For vehicles equipped with a 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.
3.9.1.2 SYSTEM OPERATION
The Automatic Temperature Control (ATC) system provides fully adjustable three zone climate
control; Driver front zone, Passenger Front zone
and Rear zone. The following is a list of ATC
controls and features:
– a POWER button which allows the operator to
turn the system completely off.
– AUTO HIGH/LOW switch allows the operator
to select what rate (fan speed) the system will
provide the selected comfort level.
– DRIVER, REAR and PASSENGER rocker
switches to select desired temperature for each
zone.
– Recirculation button allows cooling air to be
recirculated which maximizes cooling ability.
– A/C select button allows the operator to turn
the A/C compressor off.
– Defroster button allows the operator to turn on
the defroster independently during automatic
control.
– Fan control rotary switch for selecting fan
speed.
– Mode rotary switch for selecting heating/
cooling direction.
– REAR SYSTEM rotary switch for activating
the Rear ATC Switch allowing intermediate
passenger control over rear climate control.
3.9.1.3 BLOWER MOTOR OPERATION
The Automatic Temperature Control (ATC) front
and rear blower control provides continuously variable control of air flow rate to meet occupant
comfort requirements. Pulse width modulation of
the blower motor power allows the front and rear
blower to operate at any speed from off to full speed.
When front or rear blower operation is required, the
ATC sends a PCI Bus message to the Front Control
Module (FCM) requesting blower relay ON. The
FCM provides a ground for the front and rear
blower motor relay coils, activating both relays. The
front and rear blower relays provide 12 volts to
their respective blower motor power modules. Each
module provides a 12 volt blower motor control
signal to the ATC. The ATC provides a pulse width
modulated (duty-cycle) ground signal to this circuit
based on climate requirements. The higher voltage
on the signal circuit (less duty-cycle ground) the
lower the blower speed request. The lower voltage
on the signal circuit (more duty-cycle ground) the
higher the blower speed request.
3.9.1.4 INFRARED SENSORS
The ATC system uses infrared (I/R) sensors to
monitor and control oocupant comfort levels. This
sensing system replaces interior air temperature
and solar sensors which required complex control
programs to maintain occupant comfort levels. The
front I/R sensor is located in the instrument panel
center bezel outlet. The rear I/R sensor is located in
the rear overhead mounted ATC switch.
3.9.1.5 REAR ATC SWITCH
The rearATC switch is mounted in the headliner.
The switch contains a rotary adjustment for fan
speed, a rotary adjustment for mode selection, a
push button switch for temperature selection and a
digital display of the selected temperature.
3.9.1.6 COOLDOWN TESTING
The ATC provides a feature referred to as a
Cooldown Test. This test is initiated using the
DRBIIIt and is designed to check the performance
of the air conditioning system. The ATC will not
perform this test if the ambient air temperature is
below 12°C (53°F). During the test, the ATC compares the ambient air temperature to the evaporator temperature sensor. To pass the cooldown test,
the evap temperature sensor must drop -6°C (20°F)
below ambient temperature within 2 minutes of
start of test. At the completion of the cooldown test
the DRBIIIt will display one of the following messages indicating test outcome:
– Cooldown Test Passed
– Cooldown Test Failed
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– Evap Temp Sensor Shorted
– Evap Temp Sensor Open
– A/C Pressure Too Low
– A/C Pressure Too High
– Invalid Conditions for Cooldown Test, Evap
Temperature Too Low
If a message other than Cooldown Test Passed
occurs, refer to the appropriate symptom for diagnosis.
3.9.1.7 ACTIVE AND STORED TROUBLE
CODES
The Automatic Temperature Control (ATC) is
capable of storing Active and Stored trouble codes.
Active codes indicate a current fault in the system.
Stored codes indicate that a problem has occurred
in the system, however is not currently present.
Active codes cannot be erased until the problem
causing the code has been repaired. At this time the
Active code is converted to a Stored code, which can
be erased using the DRBIIIt.
3.9.2 MANUAL TEMPERATURE CONTROL
3.9.2.1 SYSTEM AVAILABILITY
Depending on the model, either a Single-Zone Air
Conditioning System or a Dual-Zone Air Conditioning System is currently available in these vehicles.
Module. In addition, this system provides completely independent side-to-side control of incoming
air temperature. The full range of temperature that
the system can produce in any mode is available on
either side of the vehicle by positioning the independent driver and passenger blend controls to the
desired range.
3.9.2.5 AIR DISTRIBUTION
The HVAC unit has five fully adjustable instrument panel outlets. Side-window demister outlets
in the instrument panel eliminate door ducts and
door-to-instrument panel seals. A single, central
mounted outlet delivers air for defrosting the windshield. Air exhausters allow air entering at the
front of the vehicle to flow out the back to the rear
occupants. Mid-cabin comfort control directs only
cooling air flow to the intermediate seat occupants
through outlets at the rear of each front door trim
panel. Air is supplied to these outlets from the
instrument panel through ducts in the doors that
use molded seals at the instrument panel to prevent
air leakage. Wide outlets under the front seats with
directional dividers distribute heated air across the
floor to the intermediate seat occupants. Ducts in
the center of the vehicle under the carpet deliver air
from the HVAC unit to these outlets. Models
equipped with Dual-Zone A/C systems also include
a dust and odor air filter installed in the HAVC
housing.
3.9.2.2 CABIN HEATER
For Vehicles equipped with a 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.
3.9.2.3 ZONE CONTROL – SINGLE-ZONE
The Single-Zone Air Conditioning System maintains incoming air temperature, airflow, fan speed,
and fresh air intake for the entire vehicle from the
instrument panel mounted A/C – Heater Control
Module. The full range of temperature that the
system can produce in any mode for the entire
vehicle is available by positioning the blend control
to the desired range.
3.9.2.4 ZONE CONTROL – DUAL-ZONE
The Dual-Zone Air Conditioning System maintains incoming air temperature, airflow, fan speed,
and fresh air intake for the entire vehicle from the
instrument panel mounted A/C – Heater Control
3.9.2.6 DOOR ACTUATORS
The electric door actuators are a two-wire design.
Each door actuator uses a similar connector wired
directly to the A/C – Heater Control Module. SingleZone systems have one blend door actuator, one
mode door actuator, and one recirculation door
actuator. Dual-Zone systems have two blend door
actuators, one mode door actuator, and one recirculation door actuator. All of the door actuators are
accessible from the vehicle’s interior.
3.9.2.7 DOOR ACTUATOR CONTROL
The A/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.
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3.9.2.8 HVAC SYSTEM RELAYS
The Integrated Power Module (IPM) houses and
provides power to the A/C Clutch Relay and Front
Blower Motor Relay.
3.9.2.9 EVAPORATOR TEMPERATURE
SENSOR
An evaporator temperature sensor, located on the
A/C expansion valve under the hood, replaces the
previously used fin sensor.
3.9.2.10 A/C – HEATER CONTROL
MODULE, SWITCH OPERATION
Power Switch
The Power Switch is a momentary contact switch.
The switch LED illuminates when the switch is on.
The Power Switch setting is remembered during
power down.
Rear Window Defogger Switch
The Rear Window Defogger Switch is a momentary contact switch. Toggling the switch results in
the A/C – Heater Control Module sending a change
of state message to the FCM to provide rear window
defogger activation or deactivation respectively.
The switch LED illuminates when the switch is on.
or Engine Control Module (ECM – diesel) to provide
A/C compressor clutch activation or deactivation
respectively. The A/C – Heater Control Module will
only provide this request if EVAP function is found
acceptable. The Power Switch must be on to make
the A/C switch active. The switch LED illuminates
when the switch is on. The A/C Switch setting is
remembered during power down.
Blower Switch
The rotary Blower Switch has five positions, Low,
M1, M2, M3, and High. The Power Switch must be
on to make the Blower Switch active. Toggling the
Power Switch results in the A/C – Heater Control
Module sending a request to the FCM to provide
blower motor activation or deactivation respectively.
Blend Switch – Single Zone
The single rotary Blend Switch has multiple
detents to control the full range of temperature that
the system can produce in any mode. Rotating the
switch results in the A/C – Heater Control Module
signaling the actuator to move the blend door. All
door positions are determined relative to the number of commutator pulses required to provide full
travel of the door. On command, the A/C – Heater
Control Module runs the actuator for the number of
pulses corresponding to the desired door position.
Recirculation Switch
The Recirculation Switch is a momentary contact
switch. Toggling the switch on results in the A/C –
Heater Control Module signaling the actuator to
close the fresh-air door. Toggling the switch off
results in the A/C – Heater Control Module signaling the actuator to open the fresh-air door. The
switch LED illuminates when the switch is on.
When the Power Switch is off, the A/C – Heater
Control Module closes the fresh-air door to prevent
outside air from entering the passenger compartment. The recirculation mode will cancel whenever
defrost is requested. Pressing the Recirculation
Switch while in defrost mode will illuminate the
Recirculation Switch LED, but only while the button is pressed. Under this circumstance, the recirculation request will be denied and the fresh-air
door will remain in the fresh position. All door
positions are determined relative to the number of
commutator pulses required to provide full travel of
the door. On command, the A/C – Heater Control
Module runs the actuator for the number of pulses
corresponding to the desired door position.
A/C Switch
The A/C Switch is a momentary contact switch.
Toggling the switch results in the A/C – Heater
Control Module sending a change of state message
to the Powertrain Control Module (PCM – gasoline)
Blend Switch – Dual Zone
The dual sliding Blend Switches have multiple
detents to control the full range of temperature that
the system can produce an any mode. The upper
slide pot controls the driver-side blend door, while
the lower slide pot controls the passenger-side
blend door. Sliding the switch results in the A/C –
Heater Control Module signaling the actuator to
move the blend door. All door positions are determined relative to the number of commutator pulses
required to provide full travel of the door. On
command, the A/C – Heater Control Module runs
the actuator for the number of pulses corresponding
to the desired door position.
Mode Switch
The single rotary Mode Switch has 13 detents to
either direct airflow to the panel outlets, a mix of
floor and panel outlets, floor outlets, a mix of floor
and defrost outlets, or defrost outlets. Rotating the
switch results in the A/C – Heater Control Module
signaling the actuator to move the mode door. All
door positions are determined relative to the number of commutator pulses required to provide full
travel of the door. On command, the A/C – Heater
Control Module runs the actuator for the number of
pulses corresponding to the desired door position.
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GENERAL INFORMATION
3.9.2.11 HVAC DIAGNOSTICS
The A/C – Heater Control Module is fully addressable with the DRBIIIt. Two of the Control Module’s diagnostic capabilities that the DRBIIIt will
actuate include the A/C Cooldown Test to test A/C
system performance and the HVAC Door Recalibration Test to determine actuator travel span. After
performing either test, the Control Module will
display one or more messages on the DRBIIIt
screen. The message will indicate either that the
HVAC system passed the test or that there is a fault
currently active in the HVAC system. The DRBIIIt
can also extract active and stored Diagnostic Trouble Codes (DTCs) from the control module. Active
DTCs are faults that currently exit in the HVAC
system. Active DTCs cannot be erased until the
condition causing the code is repaired. Stored DTCs
are faults that occurred in the HVAC system since
the control module received the last “clear diagnostic info” message.
3.10 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.
3.10.1 GENERAL SAFETY INFORMATION
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 MAY 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 MAY RESULT IN PERSONAL
INJURY.
WARNING: ALWAYS DISCONNECT THE
VEHICLE’S BATTERY PRIOR TO PERFORMING ANY TYPE OF WORK ON THE
DCHA. FAILURE TO FOLLOW THESE
INSTRUCTIONS MAY 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 MAY RESULT IN
PERSONAL INJURY OR DEATH.
CAUTION: Do not actuate the DCHA Field
Mode Test with the engine off. Failure to
follow these instructions may 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 may 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.
NOTE: Waxed fuel can obstruct the fuel line
and reduce flow. Check for the appropriate
winter grade fuel and replace as necessary.
3.10.2 COMPONENT DESCRIPTION AND
OPERATION
3.10.2.1 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 DCHAassembly 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.
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GENERAL INFORMATION
The DCHA assembly consists of a:
• combustion air fan assembly
• burner housing
• burner insert
• control unit/heat exchanger
• combustion chamber
• dosing pump
3.10.2.2 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.
3.10.2.3 BURNER HOUSING
The burner housing includes the:
• coolant inlet
• coolant outlet
• exhaust outlet
The burner housing accommodates the burner
insert and is combined with the control unit/heat
exchanger as an assembly.
3.10.2.4 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 combustion 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
designed as an electrical resistor is located in the
burner insert opposite the flame side.
3.10.2.5 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).
3.10.2.6 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.
3.10.3 OPERATION
3.10.3.1 ACTIVATION
When the ignition is in Run, the FCM monitors
the PCI bus for the Cabin Heater Activation request. The A/C – Heater Control Module 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.
The DCHA will activate only when the:
• engine is running.
• coolant temperature is below 66°C (151°F).
• fuel tank has greater than 1/8 of a tank of fuel.
• Power switch on theA/C – Heater Control Module
is on.
• Blend Control on the A/C – Heater Control Mod-
ule is set above 95% reheat.
• Front Control Module (FCM) sees the Cabin
HeaterActivation request that is bussed from the
A/C – Heater Control Module.
When the DCHA starting sequence begins, the
glow plug and the combustion air fan are activated.
After 30 seconds, the fuel dosing pump begins oper-
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GENERAL INFORMATION
ating 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.
3.10.3.2 HEATING
During the automatically controlled heating operation, when the coolant temperature reaches
72°C (162°F), the heater will switch to a part load
operation. When the coolant temperature reaches
75°C (167°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 71°C
(160°F) during a control idle period, the heater will
perform a regular starting sequence into full load
operation. A drop in coolant temperature to 65°C
(149°F) during part load operation will cause the
heater to switch to a full load operation.
3.10.3.3 DEACTIVATION
The DCHA will deactivate if the:
• engine is turned off.
• coolant temperature reaches 75°C (167°F).
• heater runs longer than 76 minutes.
• fuel tank has less than 1/8 of a tank of fuel.
• Power switch on theA/C – Heater Control Module
is off.
• Blend Control on the A/C – Heater Control Mod-
ule is set below 75% reheat.
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.
3.10.4 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.
3.11 INSTRUMENT CLUSTER
The Instrument Cluster receives and sends messages to other modules via the PCI bus circuit. The
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 in self-diagnostic mode. The odometer display uses blue-green vacuum fluorescent digital
characters.
On base vehicles, the Instrument Cluster has
three gauges: Speedometer, Fuel and Engine Coolant Temperature. A red dot moves transversely
through openings in the Instrument Cluster face
(P-R-N-D-2-1) to indicate the gear selected.
With all other models, the Instrument Cluster
also includes a Tachometer and uses a vacuumfluorescent shift indicator.
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.
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GENERAL INFORMATION
On vehicles equipped 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.
3.11.1 INSTRUMENT CLUSTER SELF TEST
1. Depress and hold the Odometer Reset button.
2. Turn the ignition switch to the RUN/START
position.
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.
3.11.2 MESSAGE CENTER
The Message Center is located above the brow of
the Instrument Cluster. It houses the following
warning indicators: Check Engine/Service Engine
Soon, high beam, left and right turn signals, Security Alarm Set, and low oil pressure. On base
models equipped with the three-speed transaxle,
these indicators appear in the face of the cluster.
The Security Alarm set indicator is a red circle.
Activation of Instrument Cluster indicators is
coordinated with indicators in the message center
and EVIC to avoid redundancy. A revised safety
standard now requires that the seat belt warning
lamp in the Instrument Cluster remain lit if the
driver seat belt is not buckled. A headlamp out ISO
indicator has been added to the Instrument Cluster
to alert the driver when a headlamp is not functioning.
3.12 INTERIOR LIGHTING
3.12.1 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).
3.12.2 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.
3.12.3 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.
3.13 MEMORY SYSTEM
The memory system consists of power driver’s
seat, power mirrors and radio presets. The Memory
Seat/Mirror Module (MSMM) 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), and send/receive the memory system information over the PCI bus.
The Memory Set Switch is wired to the Body
Control Module (BCM). When a button (either #1 or
#2) is pressed on the set switch causes the to BCM
send a message to the MSMM which in turn sends
a motion status messages to the BCM. If the BCM
receives no motion from the MSMM it will send a
recall message to the MSMM and radio (once ignition is in run or accessory). The MSMM will in turn
position the drivers seat, both mirrors along with
recalling the radio presets. If the drivers seat or
either exterior mirror is inoperative from its own
respective switches, use the service information
and schematic to diagnose the problem. This manual addresses the memory problems only and it is
assumed there is not a basic component failure.
3.13.1 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 MSMM with two
motor drive circuits. Each circuit is switched between battery and ground. By being able to bidirectionally drive the circuits, the MSMM 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
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GENERAL INFORMATION
contains a potentiometer to monitor the seat position. To monitor the position of the motor, the
MSMM 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 MSMM monitors the
voltage change through the sensor on a separate
signal circuit.
The MSMM 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 MSMM 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 MSMM 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 motor would
be detected by the MSMM and the corresponding
seat output would be deactivated. However, if the
object obstructing the seat is removed, the seat will
function normally again.
3.13.2 MEMORY MIRRORS
Each outside mirror contains vertical and horizontal bi-directional drive positioning motors and
position sensors. The MSMM provides a 5-volt
reference on the signal circuit to each position
sensor. The sensors share a common ground circuit.
The MSMM monitors the position of the mirror
motors by measuring the voltage on each signal
circuit. When a memory position is set, the MSMM
monitors and stores the position of the outside
mirrors. The MSMM adjusts the mirrors 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 both mirrors independently of
the MSMM.
and trip odometer (ODO). The information needed
for the CMTC functions is received over the PCI bus
from other modules.
3.14.2 ELECTRONIC VEHICLE
INFORMATION CENTER (EVIC)
The Electronic Vehicle Information Center
(EVIC) includes all the same functions and is located in the same area as the Compass/Mini-Trip
Computer, but it adds a number of warning messages. Also, the EVIC messages are spelled out on
the screen, for example, DISTANCE TO EMPTY,
where the Mini-Trip Computer displays only shows
DTE.
If the compass/mini-trip computer or EVIC has
been replaced, it may be necessary to reset the
calibration.
3.14.3 SETTING THE COMPASS
The compass/mini-trip computer and EVIC are
self-calibrated and requires no adjustment. The
word CAL will be displayed to indicate that the
compass is in the fast calibrating mode. CAL will
turn off after the vehicle has gone in three complete
circles without stopping, in an area free of magnetic
disturbance.
If the module displays the temperature while the
compass is blank or shows a false reading, the
vehicle must be demagnetized. See the service manual for the proper procedure.
If the compass still goes blank after the vehicle is
demagnetized, the compass/mini-trip/EVIC module
must be replaced.
3.14.4 SETTING THE VARIANCE
Variance is the difference between magnetic
north and geographic north. To determine the variance for the area you are in, refer to the following
zone map provided. The number shown for your
area is the variance number for your area.
3.14 OVERHEAD CONSOLE
3.14.1 COMPASS/MINI-TRIP COMPUTER
(CMTC)
The compass/mini-trip computer is located in the
overhead console. It displays to the driver the
direction the vehicle is traveling and the current
outside temperature, as well as the following traveler navigational information: average fuel economy (AVG ECO), distance to empty (DTE), instantaneous fuel economy (ECO), elapsed time (ET),
1. Set the compass/mini-trip computer (CMTC) to
compass/temperature mode.
2. Press and hold down the RESET button for 5
seconds. NOTE: If the button is held for 10
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GENERAL INFORMATION
seconds instead of 5, the CMTC will set the
variance to 8 and enter the fast calibration
mode.
3. The VAR light will come on and the last variance
setting will be displayed.
4. Press the STEP button to set the zone number.
5. Press the US/M button and resume normal operation.
NOTE: Do not attach any magnetic device
such as a magnetic CB antenna to the
vehicle. This can cause the compass to give
false readings.
3.15 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 driver 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.
3.15.1 SLIDING DOOR MEMORY LOCK
When the BCM receives an input for a lock
request and a sliding door is open, the BCM will
turn on the lock driver as described above, and will
turn it on again when all sliding doors are closed.
NOTE: If the BCM receives an unlock input before
a sliding door is closed, this will cancel the memory
lock.
3.15.2 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
usual. This allows the driver to lock the vehicle with
the engine running for warm up.
3.15.3 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 of 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 15 MPH (24 KMH).
3.15.4 REMOTE KEYLESS ENTRY (RKE)
The body control module interfaces with the RKE
module via a one-way serial bus interface. The RKE
module is not on the PCI bus. The RKE module
sends a 0-5 volt pulse width signal to the BCM
depending on which button on the transmitter was
pressed. The BCM controls the door lock/unlock
functions and the arming/disarming of the Vehicle
Theft Security System (if equipped) and the activation of illuminated entry. The BCM will also send
the appropriate messages to the Power Sliding
Doors and Power Liftgate modules. The Intelligent
Power Module (IPM) activates the park lamps,
headlamps, and horn for horn chirp when sent the
appropriate message from the BCM as received
from the RKE transmitter. When a one-button
press is made for unlock, both driver side doors will
unlock and the front and rear turn signal will flash.
When a second press is initiated (within 5 seconds
of the first) both passenger doors will unlock and all
four turn signals will flash.
The RKE module is capable of retaining up to 4
individual access codes (4 transmitters). If the
PRNDLis in any position except park, the BCM will
ground the interface thereby disabling the RKE.
The 2 button transmitter will have 2-CR2016
batteries in series. The 5 button transmitter will
have 1-CR2016 battery. The minimum battery life
should be approximately 4.7 years based on 20
transmissions a day at 84°F (25°C). Using the
DRBIIIt and selecting RKE FOB Test can test the
transmitter.
The RKE module can be programmed via the
DRBIIIt or the customer programming method.
The BCM will only allow programming mode to be
entered when the ignition is in the on position, the
PRNDL is in park position, and the VTSS (if
equipped) is in the disarmed mode.
3.16 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
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GENERAL INFORMATION
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.
3.17 POWER LIFTGATE SYSTEM
3.17.1 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.
3.17.2 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.
3.17.3 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.
3.18 POWER SLIDING DOOR SYSTEM
3.18.1 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
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
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GENERAL INFORMATION
manual sliding door. When the child lock out switch
is on, the B pillar switches are disabled.
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.
3.18.2 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.
3.18.3 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. Child locks enabled inhibit the B pillar switch
operation
5. O/H console lockout will inhibit the B pillar
switches
6. Doors locked will inhibit all interior switches
from opening (Overhead Console, B Pillar). A
locked sliding door can be power closed.
3.19 REAR WINDOW DEFOG/HEATED
MIRROR/FRONT WIPER DE-ICE
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.
3.20 VEHICLE THEFT SECURITY SYSTEM
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 Immobilizer Module (SKIM). Passive
arming occurs in one of two ways. Upon normal
vehicle exit by removing the ignition key, opening
the driver door, locking the doors with the power
lock, and closing the driver door, or by removing the
ignition key, opening the driver door, closing the
driver door, and locking the doors with the Remote
Keyless Entry (RKE) transmitter. 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 18 minutes.
Arming (Active and Passive)
Active arming occurs when the RKE transmitter
is 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). 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 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.
3.20.1 BASE ALARM SYSTEM
The Vehicle Theft Security System (VTSS) is part
of the Body Control Module (BCM). The BCM
monitors the vehicle doors, liftgate, hood, and the
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GENERAL INFORMATION
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.
3.20.2 THATCHAM ALARM SYSTEM
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 RKE/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 then be
armed by following a normal exit sequence, of
opening the door and then locking the doors with
the door lock switch and then closing the door. The
system can also be armed by opening the door,
closing the door and then locking the doors with the
RKE transmitter.
Disarming
To disarm the alarm system, the RKE transmitter is used. The RKE transmitter will unlock the
vehicle doors and disarm the alarm system. The
RKE transmitter can also be used to halt the alarm
once it has been activated.
3.21 WIPER SYSTEM
3.21.1 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
uses the vehicle speed input to double the usual
delay time below 10 MPH (6 KPH).
3.21.2 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
(6 KPM), the delay time is doubled, providing a
delay range of 3.4 seconds to 36.8 seconds.
3.21.3 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.
3.21.4 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.
3.21.5 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.
3.21.6 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.
3.21.7 SPEED SENSITIVE INTERMITTENT
WIPE MODE
The delay setting of the rear wiper system is
based solely on the vehicle speed. The delay time is
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GENERAL INFORMATION
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.
3.21.8 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.
3.22 USING THE DRBIIIT
Refer to the DRBIIIt user guide for instructions
and assistance with reading trouble codes, erasing
trouble codes, and other DRBIIIt functions.
3.22.1 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
3.22.3 DISPLAY IS NOT VISIBLE
Low temperatures will affect the visibility of the
display. Adjust the contrast to compensate for this
condition.
4.0 DISCLAIMERS, SAFETY,
WARNINGS
4.1 DISCLAIMERS
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.
Press MORE to switch between this display
and the application screen.
Press F4 when done noting information.
3.22.2 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.
4.2 SAFETY
4.2.1 TECHNICIAN SAFETY INFORMATION
WARNING: ENGINES PRODUCE CARBON
MONOXIDE THAT IS ODORLESS, CAUSES
SLOWER REACTION TIME, AND CAN LEAD
TO SERIOUS INJURY. 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.
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GENERAL INFORMATION
When diagnosing a chassis 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 chassis 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.
4.2.4 DRBIIIT SAFETY 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
WARNING: EXCEEDING THE LIMITS OF THE
DRBIIIT MULTIMETER IS DANGEROUS. IT
CAN EXPOSE YOU TO SERIOUS OR
POSSIBLY FATAL INJURY. CAREFULLY
READ AND UNDERSTAND THE CAUTIONS
AND THE SPECIFICATION LIMITS.
• 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 mea-
surement that may exceed the rated capacity.
• Do not 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
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.
Frequency Measured
Frequency Generated
Temperature -58 - 1100°F
0-10kHz
-50 - 600°C
29
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GENERAL INFORMATION
WARNING: BEFORE ROAD TESTING A
VEHICLE, BE SURE THAT ALL
COMPONENTS ARE REASSEMBLED.
DURING THE TEST DRIVE, DO NOT TRY TO
READ THE DRBIIIT SCREEN WHILE IN
MOTION. DO NOT HANG THE DRBIIIT FROM
THE REAR VIEW MIRROR OR OPERATE IT
YOURSELF. HAVE AN ASSISTANT
AVAILABLE TO OPERATE THE DRBIIIT.
5.0 REQUIRED TOOLS AND
EQUIPMENT
DRBIIIt (diagnostic read-out box)
Jumper wires
Ohmmeter
Voltmeter
Sentry Key Tester
Test Light
8310 Airbag System Load Tool
8443 SRS Airbag System Load Tool
Diagnostic Junction Port Tester 8339
6.0 GLOSSARY OF TERMS
ABS antilock brake system
ACM airbag control module
AECM airbag electronic control module
(ACM)
ASDM airbag system diagnostic module
(ACM)
ATC automatic temperature control
BCM body control module
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
DR driver
EBL electric back lite (rear window de-
fogger)
ECM Engine control module
EVIC electronic vehicle information center
FCM front control module
GCC Gulf Coast Countries
HVAC heater ventilation, air conditioning
IPM intelligent power module
LDU lower drive unit
LHD Left Hand Drive
MIC mechanical instrument cluster
MTC manual temperature control
MSMM memory seat/mirror module
OBD on board diagnostics
ODO odometer
ORC occupant restraint controller
PAB passenger airbag
PASS passenger
PCI Programmable Communication In-
terface (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
SAB seat airbag
SBT seat belt tensioner
SIACM side impact airbag control module
SKIM sentry key immobilizer module
SKIS sentry key immobilizer system
SQUIB also called initiator (located inside
airbag)
SRS supplemental restraint system
TCM transmission control module
VFD vacuum fluorescent display
VTSS vehicle theft security system
30
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7.0
DIAGNOSTIC INFORMATION AND
PROCEDURES
31
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AIRBAG
Symptom List:
FCM, ORC RUN ONLY DRIVER OPEN - ACTIVE
FCM, ORC RUN ONLY DRIVER OVER CURRENT - ACTIVE
FCM, ORC RUN ONLY DRIVER OVER TEMP - ACTIVE
FCM, ORC RUN ONLY DRIVER OVER VOLT - ACTIVE
FCM, ORC RUN ONLY DRIVER SHORT TO GROUND - ACTIVE
ORC, LOSS OF IGNITION RUN ONLY - ACTIVE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be FCM, ORC RUN ONLY DRIVER
OPEN - ACTIVE.
When Monitored and Set Condition:
FCM, ORC RUN ONLY DRIVER OPEN - ACTIVE
When Monitored: When the ignition is turned OFF, the microprocessor controlled
transistor (high side driver) places a diagnostic voltage on the ORC Run-Start circuit for
60 seconds. An open high side driver (HSD) circuit voltage is between 2.4 and 5.0 volts.
Set Condition: This code will set within 10 second, if the microprocessor senses 2.4 to 5.0
volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.
FCM, ORC RUN ONLY DRIVER OVER CURRENT - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run Only position.
Set Condition: The code will set within 1 second, if the microprocessor senses HSD
internal temperature. The high temperature is caused by over current.
FCM, ORC RUN ONLY DRIVER OVER TEMP - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run position.
Set Condition: The code will set within 2.5 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, ORC RUN ONLY DRIVER OVER VOLT - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
battery voltage when the ignition is in the run position.
Set Condition: The code will set if the microprocessor senses HSD battery voltage is over
30 volts.
32
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FCM, ORC RUN ONLY DRIVER OPEN - ACTIVE — Continued
FCM, ORC RUN ONLY DRIVER SHORT TO GROUND - ACTIVE
When Monitored: When the ignition is turned OFF, the microprocessor controlled
transistor (high side driver) places a diagnostic voltage on the ORC Run-Start circuit for
60 seconds. An open high side driver (HSD) circuit voltage is between 2.4 and 5.0 volts.
Set Condition: This code will set within 10 second, if the microprocessor senses 2.4 to 5.0
volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.
ORC, LOSS OF IGNITION RUN ONLY - ACTIVE
When Monitored: With the ignition in the run only position the ORC monitors the ORC
Run Only Driver circuit for proper system voltage.
Set Condition: If the voltage on the ORC Run Only Driver circuit drops below 4.5 volts,
the code will set.
AIRBAG
POSSIBLE CAUSES
VERIFYING ORC RUN ONLY DRIVER CODES
CHECK BATTERY VOLTAGE
FCM, RUN ONLY DRIVER OVER VOLTAGE
ORC, RUN ONLY OPEN TEST
FCM, RUN ONLY OPEN TEST
IPM, RUN ONLY OPEN TEST
ORC RUN ONLY DRIVER CIRCUIT OPEN
FCM, RUN ONLY SHORT TEST
IPM, RUN ONLY SHORT TEST
ORC RUN ONLY DRIVER CIRCUIT SHORT
33
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AIRBAG
FCM, ORC RUN ONLY DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
1 Ensure that the battery is fully charged.
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE OCCUPANT RESTRAINT CONTROLLER IS DROPPED
AT ANY TIME, IT MUST BE REPLACED.
Disconnect the Occupant Restraint Controller Connector.
NOTE: Check connectors - Clean and repair as necessary.
WARNING: TURN IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active FCM DTCs.
Turn the ignition off.
With the DRBIIIt, read the active FCM DTCs.
NOTE: The ORC RUN ONLY DRIVER OPEN code may not set until the
ignition key is turned off.
Select the active FCM DTC that was displayed on the DRB.
1. ORC RUN ONLY DRIVER OPEN
Go To 2
2. ORC RUN ONLY DRIVER OVER VOLTAGE
Go To 5
All
3. ORC RUN ONLY SHORT TO GROUND
Go To 6
4. ORC RUN ONLY DRIVER OVER CURRENT
Go To 6
5. ORC RUN ONLY DRIVER OVER TEMP
Go To 6
6. None of the above.
Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE OCCUPANT RESTRAINT CONTROLLER IS DROPPED
AT ANY TIME, IT MUST BE REPLACED.
Disconnect the Occupant Restraint Controller.
TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Connect a test light to ground and the ORC Run Only Driver circuit at the Occupant
Restraint Controller connector.
Cycle the ignition switch from ON to OFF.
With the DRBIIIt, read the active FCM DTCs.
Does the DRB show an active ORC RUN ONLY DRIVER OPEN code?
Yes → Go To 3
All
No → Replace the Occupant Restraint Controller in accordance with
Service Instructions. WARNING: make sure the battery is disconnected and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
34
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AIRBAG
FCM, ORC RUN ONLY DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
3 Disconnect the Front Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run Only Driver circuit between the Front
Control Module connector and the Occupant Restraint Controller connector.
Is the resistance below 1.0 ohms ?
Yes → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Go To 4
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
4 Gain access to the connectors on the bottom of the IPM.
Disconnect the IPM C7 connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance of the ORC Run Only Driver circuit between the IPM C7
connector and the Occupant Restraint Controller connector.
Is the resistance below 1.0 ohms ?
Yes → Replace the IPM.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Repair the open ORC Run Only Driver circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
5 Measure the battery voltage.
Is the voltage above 30.0 volts?
Yes → Refer to Charging Category for the P1594 Charging System Too
High symptom.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
6 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
Disconnect Occupant Restraints Controller.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run Only Driver circuit between the Front
Control Module connector and ground.
Is the resistance below 500.0 Kohms?
All
All
All
Yes → Go To 7
No → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
35
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AIRBAG
FCM, ORC RUN ONLY DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
7 Gain access to the connectors on the bottom of the IPM.
Disconnect the IPM C7 connector.
Disconnect the Occupant Restraint Controller.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run Only Driver circuit between the IPM C7
connector and ground.
Is the resistance below 500.0 Kohms?
Yes → Repair the ORC Run Only Driver circuit shorted to ground.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the IPM.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
36
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Symptom List:
FCM, ORC RUN ONLY DRIVER OPEN - STORED
FCM, ORC RUN ONLY DRIVER OVER CURRENT - STORED
FCM, ORC RUN ONLY DRIVER OVER TEMP - STORED
FCM, ORC RUN ONLY DRIVER OVER VOLT - STORED
FCM, ORC RUN ONLY DRIVER SHORT TO GROUND - STORED
FCM, ORC RUN-START DRIVER OPEN - STORED
FCM, ORC RUN-START DRIVER OVER CURRENT - STORED
FCM, ORC RUN-START DRIVER OVER TEMP - STORED
FCM, ORC RUN-START DRIVER OVER VOLT - STORED
FCM, ORC RUN-START DRIVER SHORT TO GROUND - STORED
FCM, SIACM RUN-START DRIVER OPEN - STORED
FCM, SIACM RUN-START DRIVER OVER CURRENT - STORED
FCM, SIACM RUN-START DRIVER OVER TEMP - STORED
FCM, SIACM RUN-START DRIVER OVER VOLT - STORED
FCM, SIACM RUN-START DRIVER SHORT TO GROUND - STORED
AIRBAG
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be FCM, ORC RUN ONLY DRIVER
OPEN - STORED.
When Monitored and Set Condition:
FCM, ORC RUN ONLY DRIVER OPEN - STORED
When Monitored: When the ignition is turned OFF, the microprocessor controlled
transistor (high side driver) places a diagnostic voltage on the ORC Run-Start circuit for
60 seconds. An open high side driver (HSD) circuit voltage is between 2.4 and 5.0 volts.
Set Condition: This code will set within 10 second, if the microprocessor senses 2.4 to 5.0
volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.
FCM, ORC RUN ONLY DRIVER OVER CURRENT - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run Only position.
Set Condition: The code will set within 1 second, if the microprocessor senses HSD
internal temperature. The high temperature is caused by over current.
FCM, ORC RUN ONLY DRIVER OVER TEMP - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run position.
Set Condition: The code will set within 2.5 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
37
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AIRBAG
FCM, ORC RUN ONLY DRIVER OPEN - STORED — Continued
FCM, ORC RUN ONLY DRIVER OVER VOLT - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
battery voltage when the ignition is in the run position.
Set Condition: The code will set if the microprocessor senses HSD battery voltage is over
30 volts.
FCM, ORC RUN ONLY DRIVER SHORT TO GROUND - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run Only position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by a short to ground.
FCM, ORC RUN-START DRIVER OPEN - STORED
When Monitored: When the ignition is turned OFF, the microprocessor controlled
transistor (high side driver) places a diagnostic voltage on the ORC Run Only circuit for 60
seconds. An open high side driver (HSD) circuit voltage is between 2.4 and 5.0 volts.
Set Condition: This code will set within 10 second, if the microprocessor senses 2.4 to 5.0
volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.
FCM, ORC RUN-START DRIVER OVER CURRENT - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, ORC RUN-START DRIVER OVER TEMP - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 2.5 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, ORC RUN-START DRIVER OVER VOLT - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
battery voltage when the ignition is in the Run or Start position.
Set Condition: The code will set if the microprocessor senses HSD battery voltage is over
30 volts.
38
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FCM, ORC RUN ONLY DRIVER OPEN - STORED — Continued
FCM, ORC RUN-START DRIVER SHORT TO GROUND - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
circuit for short to ground when the ignition is in the Run or Start position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by short to ground.
FCM, SIACM RUN-START DRIVER OPEN - STORED
When Monitored: When the ignition is turned OFF, the microprocessor controlled
transistor (high side driver) places a diagnostic voltage on the SIACM Run-Start circuit for
60 seconds. An open high side driver (HSD) circuit voltage is between 2.4 and 5.0 volts.
Set Condition: This code will set within 10 second, if the microprocessor senses 2.4 to 5.0
volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.
AIRBAG
FCM, SIACM RUN-START DRIVER OVER CURRENT - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the SIACM. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, SIACM RUN-START DRIVER OVER TEMP - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the SIACM. The microprocessor monitors high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 2.5 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, SIACM RUN-START DRIVER OVER VOLT - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the SIACM. The microprocessor monitors the high side driver (HSD)
battery voltage when the ignition is in the Run or Start position.
Set Condition: The code will set if the microprocessor senses the HSD battery voltage is
over 30 volts.
FCM, SIACM RUN-START DRIVER SHORT TO GROUND - STORED
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the SIACM. The microprocessor monitors high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
39
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AIRBAG
FCM, ORC RUN ONLY DRIVER OPEN - STORED — Continued
POSSIBLE CAUSES
CHECKING FOR ACTIVE FRONT CONTROL MODULE DTCS
STORED CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn ignition on.
NOTE: Ensure the battery is fully charged.
Active codes must be resolved before diagnosing stored codes.
With the DRBIIIt, record and erase all DTCs from all modules.
With the DRB III monitor active codes as you work through the system.
Wiggle the wiring harness and connectors of the Airbag and FCM modules.
NOTE: Check connectors - Clean and repair as necessary.
The following additional checks may assist you in identifying a possible intermittent
problem:
- Visually inspect related wire harness connectors. Look for broken, bent, pushed out,
spread, corroded, or contaminated terminals.
- Visually inspect related harnesses. Look for chafed, pierced, pinched or partially
broken wire.
- Refer to Wiring Diagrams and Technical Service Bulletins that may apply.
Did the DTC become active ?
All
Yes → Select appropriate symptom from Symptom List and continue
with diagnosis.
No → No problem found at this time.
40
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AIRBAG
Symptom List:
FCM, ORC RUN-START DRIVER OPEN - ACTIVE
FCM, ORC RUN-START DRIVER OVER CURRENT - ACTIVE
FCM, ORC RUN-START DRIVER OVER TEMP - ACTIVE
FCM, ORC RUN-START DRIVER OVER VOLT - ACTIVE
FCM, ORC RUN-START DRIVER SHORT TO GROUND - ACTIVE
ORC, LOSS OF IGNITION RUN-START - ACTIVE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be FCM, ORC RUN-START DRIVER
OPEN - ACTIVE.
When Monitored and Set Condition:
FCM, ORC RUN-START DRIVER OPEN - ACTIVE
When Monitored: When the ignition is turned OFF, the microprocessor controlled
transistor (high side driver) places a diagnostic voltage on the ORC Run Only circuit for 60
seconds. An open high side driver (HSD) circuit voltage is between 2.4 and 5.0 volts.
Set Condition: This code will set within 10 second, if the microprocessor senses 2.4 to 5.0
volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.
FCM, ORC RUN-START DRIVER OVER CURRENT - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, ORC RUN-START DRIVER OVER TEMP - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 2.5 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, ORC RUN-START DRIVER OVER VOLT - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
battery voltage when the ignition is in the Run or Start position.
Set Condition: The code will set if the microprocessor senses HSD battery voltage is over
30 volts.
41
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AIRBAG
FCM, ORC RUN-START DRIVER OPEN - ACTIVE — Continued
FCM, ORC RUN-START DRIVER SHORT TO GROUND - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the ORC. The microprocessor monitors the high side driver (HSD)
circuit for short to ground when the ignition is in the Run or Start position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by short to ground.
ORC, LOSS OF IGNITION RUN-START - ACTIVE
When Monitored: With the ignition in the Run-Start position the ORC monitors the ORC
Run-Start Driver circuit for proper system voltage.
Set Condition: If the voltage on the ORC Run-Start Driver circuit drops below 4.5 volts,
the code will set.
POSSIBLE CAUSES
VERIFYING ORC RUN-START DRIVER CODES
CHECK BATTERY VOLTAGE
FCM, RUN-START DRIVER OVER VOLTAGE
ORC, RUN-START TEST
FCM, RUN ONLY OPEN TEST
IPM, RUN ONLY OPEN TEST
ORC RUN ONLY DRIVER CIRCUIT OPEN
FCM, RUN-START SHORT TEST
IPM, RUN-START SHORT TEST
ORC RUN-START DRIVER CIRCUIT SHORT
42
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AIRBAG
FCM, ORC RUN-START DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
1 Ensure that the battery is fully charged.
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE OCCUPANT RESTRAINT CONTROLLER IS DROPPED
AT ANY TIME, IT MUST BE REPLACED.
Disconnect the Occupant Restraint Controller Connector.
NOTE: Check connectors - Clean and repair as necessary.
WARNING: TURN IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active FCM DTCs.
Turn the ignition off.
With the DRBIIIt, read the active FCM DTCs.
NOTE: The ORC RUN-START DRIVER OPEN code may not set until the
ignition key is turned off.
Select the active FCM DTC displayed on the DRB.
1. ORC RUN-START DRIVER OPEN
Go To 2
2. ORC RUN-START DRIVER OVER VOLTAGE
Go To 5
All
3. ORC RUN-START SHORT TO GROUND
Go To 6
4. ORC RUN-START DRIVER OVER CURRENT
Go To 6
5. ORC RUN-START DRIVER OVER TEMP
Go To 6
6. None of the above.
Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE OCCUPANT RESTRAINT CONTROLLER IS DROPPED
AT ANY TIME, IT MUST BE REPLACED.
Disconnect the Occupant Restraint Controller.
TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Connect a test light to ground and the ORC Run-Start Driver circuit at the ORC
connector.
Cycle the ignition switch from ON to OFF.
With the DRBIIIt, read the active FCM DTCs.
Does the DRB show an active ORC RUN-START DRIVER OPEN code?
Yes → Go To 3
All
No → Replace the Occupant Restraint Controller in accordance with
Service Instructions. WARNING: make sure the battery is disconnected and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
43
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AIRBAG
FCM, ORC RUN-START DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
3 Disconnect the Front Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run Only Driver circuit between the Front
Control Module connector and the Occupant Restraint Controller connector.
Is the resistance below 1.0 ohms ?
Yes → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Go To 4
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
4 Gain access to the connectors on the bottom of the IPM.
Disconnect the IPM C7 connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance of the ORC Run Only Driver circuit between the IPM C7
connector and the Occupant Restraint Controller connector.
Is the resistance below 1.0 ohms ?
Yes → Replace the IPM.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Repair the open ORC Run Only Driver circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
5 Measure the battery voltage.
Is the voltage above 30.0 volts?
Yes → Refer to Charging Category for the P1594 Charging System Too
High symptom.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
6 NOTE: Check connectors - Clean and repair as necessary.
Disconnect the Front Control Module.
Disconnect the Occupant Restraint Controller
Check connectors - Clean/repair as necessary.
Measure the resistance of the ORC Run-Start Driver circuit between the Front
Control Module connector and ground.
Is the resistance below 500.0 Kohms?
All
All
All
Yes → Go To 7
No → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
44
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AIRBAG
FCM, ORC RUN-START DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
7 Gain access to the connectors on the bottom of the IPM.
Disconnect the IPM C7 connector.
Disconnect the Occupant Restraint Controller.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the ORC Run-Start Driver circuit between the IPM C7
connector and ground.
Is the resistance below 500.0 Kohms?
Yes → Repair the ORC Run-Start Driver circuit shorted to ground.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the IPM.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
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AIRBAG
Symptom List:
FCM, SIACM RUN-START DRIVER OPEN - ACTIVE
FCM, SIACM RUN-START DRIVER OVER CURRENT - ACTIVE
FCM, SIACM RUN-START DRIVER OVER TEMP - ACTIVE
FCM, SIACM RUN-START DRIVER OVER VOLT - ACTIVE
FCM, SIACM RUN-START DRIVER SHORT TO GROUND - ACTIVE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be FCM, SIACM RUN-START
DRIVER OPEN - ACTIVE.
When Monitored and Set Condition:
FCM, SIACM RUN-START DRIVER OPEN - ACTIVE
When Monitored: When the ignition is turned OFF, the microprocessor controlled
transistor (high side driver) places a diagnostic voltage on the SIACM Run-Start circuit for
60 seconds. An open high side driver (HSD) circuit voltage is between 2.4 and 5.0 volts.
Set Condition: This code will set within 10 second, if the microprocessor senses 2.4 to 5.0
volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the
ignition is turned off.
FCM, SIACM RUN-START DRIVER OVER CURRENT - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the SIACM. The microprocessor monitors the high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, SIACM RUN-START DRIVER OVER TEMP - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the SIACM. The microprocessor monitors high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 2.5 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
FCM, SIACM RUN-START DRIVER OVER VOLT - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the SIACM circuit. The microprocessor monitors the battery voltage
when the ignition is in the run or start position.
Set Condition: The code will set if the microprocessor senses the battery voltage is over
30 volts.
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FCM, SIACM RUN-START DRIVER OPEN - ACTIVE — Continued
FCM, SIACM RUN-START DRIVER SHORT TO GROUND - ACTIVE
When Monitored: The FCM uses a microprocessor controlled transistor (high side driver)
to supply power to the SIACM. The microprocessor monitors high side driver (HSD)
internal temperature when the ignition is in the Run or Start position.
Set Condition: The code will set within 1 second, if the microprocessor senses high HSD
internal temperature. The high temperature is caused by over current.
POSSIBLE CAUSES
CHECK BATTERY VOLTAGE
FCM, SIACM RUN-START DR OVER VOLTAGE
FCM, SIACM RUN-START OPEN TEST
FCM, SIACM RUN-START OPEN TEST
AIRBAG
FCM, SIACM RUN-START SHORT TEST
IPM, SIACM RUN-START OPEN TEST
RSIACM, RUN-START OPEN TEST
RUN-START OPEN TEST
SIACM RUN-START DRIVER CIRCUIT OPEN
IPM, SIACM RUN-START SHORT TEST
LSIACM, SIACM RUN-START SHORT TEST
RIGHT SIACM RUN-START DRIVER CIRCUIT OPEN
SIACM RUN-START DRIVER CIRCUIT SHORT
RIGHT SIACM, SIACM RUN-START SHORT TEST
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AIRBAG
FCM, SIACM RUN-START DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
1 Ensure that the battery is fully charged.
Turn the ignition on.
With the DRBIIIt, read the active FCM DTCs.
NOTE: The SIACM RUN-START DRIVER OPEN code may not set until the
ignition key is turned off.
Turn the ignition off.
With the DRBIIIt, read the active SIACM FCM Diagnostic Trouble Codes.
Select the active SIACM FCM code displayed on the DRB.
1. SIACM RUN-START DRIVER OPEN
Go To 2
2. SIACM RUN-START DRIVER OVER VOLTAGE
Go To 7
3. SIACM RUN-START SHORT TO GROUND
Go To 8
4. SIACM RUN-START DRIVER OVER CURRENT
Go To 8
All
5. SIACM RUN-START DRIVER OVER TEMP
Go To 8
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE SIDE IMPACT AIRBAG CONTROL MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
Disconnect the Left Side Impact Airbag Control Module.
NOTE: When the ignition key is turned off, the FCM will supply a diagnostic
voltage to the SIACM Run-Start Driver circuit for approximately 60 seconds.
Measure the voltage of the SIACM Run-Start Driver circuit between the Left Side
Impact Airbag Control Module connector and ground.
Turn the ignition switch ON and observe the diagnostic voltage on the SIACM
Run-Start circuit.
Select the results from the list below?
Is the voltage between 1.0 and 2.2 volts
Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
Is the voltage between 2.4 and 5.0 volts
Go To 3
No Voltage present?
Go To 4
All
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
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AIRBAG
FCM, SIACM RUN-START DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
3 Disconnect the Right Side Impact Airbag Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the voltage of the SIACM Run-Start Driver circuit at the Right Side Impact
Airbag Control Module connector.
Is there any voltage present?
Yes → Replace the Left and Right Side Impact airbag Control Modules.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Left Side Impact Airbag Control Module and repair
the open SIACM Run-Start Driver circuit between the splice and
the Right Side Impact Airbag control Module connector.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
4 Disconnect the Right Side Airbag Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the voltage of the SIACM Run-Start Driver circuit between the Right Side
Impact Airbag Control Module connector and ground.
Is there any voltage present?
Yes → Replace the Right Side Impact Airbag Control Module and repair
the open SIACM Run-Start Driver circuit between the splice and
the Left Side Impact Airbag Control Module connector.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Go To 5
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
5 Disconnect the Front Control Module.
Disconnect the Right Side Impact Airbag Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the SIACM Run-Start Driver circuit between the Front
Control Module connector and the Right SIACM connector.
Is the resistance below 1.0 ohms ?
Yes → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Go To 6
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
All
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AIRBAG
FCM, SIACM RUN-START DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
6 Gain access to the connectors on the bottom of the IPM.
Disconnect the IPM C7 connector.
Disconnect the Left Side Impact Airbag Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of both SIACM Run-Start Driver circuits between the IPM
C7 connector and the Right connector.
Is the resistance below 1.0 ohms ?
Yes → Replace the IPM.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Repair the open SIACM Run-Start Driver circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
7 Measure the battery voltage.
Is the voltage above 30.0 volts?
Yes → Refer to Charging Category for the P1594 Charging System Too
High symptom.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
8 Disconnect the Right Side Impact Airbag Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the SIACM Run-Start Driver circuit between the Front
Control Module connector and ground.
Is the resistance below 500.0 Kohms?
Yes → Go To 9
No → Replace the Front Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
9 Gain access to the connectors on the bottom of the IPM.
Disconnect the IPM C7 connector.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the SIACM Run-Start Driver circuit between the IPM C7
connector and ground.
Is the resistance below 500.0 Kohms?
All
All
All
Yes → Go To 10
No → Replace the IPM.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
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AIRBAG
FCM, SIACM RUN-START DRIVER OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
10 The SIACM Run-Start Driver circuit must be SHORTED for the result of this test to
be valid
Disconnect the IPM C7 connector.
Disconnect the Left Side Impact Airbag Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the SIACM Run-Start Driver circuit between the IPM C7
connector and ground.
Is the resistance below 500.0 Kohms?
Yes → Go To 11
No → Replace the Left Side Impact Airbag Control Module..
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
11 Gain access to the connectors on the bottom of the IPM.
Disconnect the IPM C7 connector.
Disconnect the Right Side Impact Airbag Control Module.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the SIACM Run-Start Driver circuit between the IPM C7
connector and ground.
Is the resistance below 500.0 Kohms?
Yes → Repair the SIACM Run-Start Driver circuit shorted to ground.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Right Side Impact Airbag Control Module.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
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AIRBAG
Symptom List:
LEFT SIACM ACCELEROMETER 1 - ACTIVE
LEFT SIACM ACCELEROMETER 1 - STORED
LEFT SIACM ACCELEROMETER 2 - ACTIVE
LEFT SIACM ACCELEROMETER 2 - STORED
LEFT SIACM INTERNAL 1 - ACTIVE
LEFT SIACM INTERNAL 1 - STORED
LEFT SIACM OUTPUT DRIVER 1 - ACTIVE
LEFT SIACM OUTPUT DRIVER 1 - STORED
LEFT SIACM, LOSS OF IGNITION RUN-START - ACTIVE
LEFT SIACM, NO PCI TRANSMISSION - ACTIVE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be LEFT SIACMACCELEROMETER
1 - ACTIVE.
When Monitored and Set Condition:
LEFT SIACM ACCELEROMETER 1 - ACTIVE
When Monitored: When the ignition on, the Left SIACM on board diagnostics continuously performs internal circuit tests.
Set Condition: This DTC will set if the Left SIACM identifies an out of range internal
circuit
LEFT SIACM ACCELEROMETER 1 - STORED
When Monitored: When the ignition on, the Left SIACM on board diagnostics continuously performs internal circuit tests.
Set Condition: This DTC will set if the Left SIACM identifies an out of range internal
circuit.
LEFT SIACM ACCELEROMETER 2 - ACTIVE
When Monitored: When the ignition on, the Left SIACM on board diagnostics continuously performs internal circuit tests.
Set Condition: This DTC will set if the Left SIACM identifies an out of range internal
circuit.
LEFT SIACM ACCELEROMETER 2 - STORED
When Monitored: When the ignition on, the Left SIACM on board diagnostics continuously performs internal circuit tests.
Set Condition: This DTC will set if the Left SIACM identifies an out of range internal
circuit.
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LEFT SIACM ACCELEROMETER 1 - ACTIVE — Continued
LEFT SIACM INTERNAL 1 - ACTIVE
When Monitored: When the ignition on, the Left SIACM on board diagnostics continuously performs internal circuit tests.
Set Condition: This DTC will set if the Left SIACM identifies an out of range internal
circuit.
LEFT SIACM INTERNAL 1 - STORED
When Monitored: When the ignition on, the Left SIACM on board diagnostics continuously performs internal circuit tests.
Set Condition: This DTC will set if the Left SIACM identifies an out of range internal
circuit.
LEFT SIACM OUTPUT DRIVER 1 - ACTIVE
When Monitored: When the ignition on, the Left SIACM on board diagnostics continuously performs internal circuit tests.
AIRBAG
Set Condition: This DTC will set if the Left SIACM identifies an out of range internal
circuit.
LEFT SIACM OUTPUT DRIVER 1 - STORED
When Monitored: When the ignition on, the Left SIACM on board diagnostics continuously performs internal circuit tests.
Set Condition: This DTC will set if the Left SIACM identifies an out of range internal
circuit.
LEFT SIACM, LOSS OF IGNITION RUN-START - ACTIVE
When Monitored: With the ignition in the run or start position the Left SIACM monitors
the SIACM Run-Start Driver circuit for proper system voltage. This is an active trouble
code only.
Set Condition: If the voltage on the SIACM Run-Start Driver circuit is below 4.0 volts,
the code will set.
LEFT SIACM, NO PCI TRANSMISSION - ACTIVE
When Monitored: With the ignition in the On position and the Left SIACM transmitting
information on the PCI BUS.
Set Condition: The code will set, if the Left SIACM cannot detect the Left SIACM
transmitting information on the PCI BUS for 4 consecutive seconds. NOTE: Any PCI Bus
Failure will cause this code to set.
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AIRBAG
LEFT SIACM ACCELEROMETER 1 - ACTIVE — Continued
POSSIBLE CAUSES
LEFT SIDE IMPACT AIRBAG CONTROL MODULE, ACTIVE OR STORED CODE
TEST ACTION APPLICABILITY
1 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE SIDE IMPACT AIRBAG CONTROL MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
Replace the Left Side Impact Airbag Control Module in accordance
with Service Instructions. WARNING: Make sure the battery is
disconnected and wait 2 minutes before proceeding. Erase DTCs
in all Modules.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
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AIRBAG
Symptom List:
LEFT SIACM, NO PCI TRANSMISSION - STORED
LEFT SIACM, NO PCM MESSAGE - STORED
LEFT SIACM, SEAT SQUIB CIRCUIT OPEN - STORED
LEFT SIACM, SEAT SQUIB CIRCUIT SHORT - STORED
LEFT SIACM, SEAT SQUIB SHORT TO BATTERY - STORED
LEFT SIACM, SEAT SQUIB SHORT TO GROUND - STORED
ORC, INTERROGATE LEFT SIACM - STORED
ORC, NO LEFT SIACM MESSAGE - STORED
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be LEFT SIACM, NO PCI TRANSMISSION - STORED.
When Monitored and Set Condition:
LEFT SIACM, NO PCI TRANSMISSION - STORED
When Monitored: With the ignition in the On position and the Left SIACM transmitting
information on the PCI BUS.
Set Condition: The code will set if, the Left SIACM cannot detect the Left SIACM
transmitting information on the PCI BUS for 4 consecutive seconds. NOTE: Any PCI Bus
Failure will cause this code to set.
LEFT SIACM, SEAT SQUIB CIRCUIT OPEN - STORED
When Monitored: When the ignition is ON, the Left SIACM monitors the Left Seat Squib
circuits for high resistance.
Set Condition: The Left SIACM has detected an open circuit or high resistance on the
Left Seat Squib circuits.
LEFT SIACM, SEAT SQUIB CIRCUIT SHORT - STORED
When Monitored: When the ignition is on, the Left SIACM monitors the resistance of the
Left Seat Squib circuits.
Set Condition: The Left SIACM has detected low resistance in the Left Seat Squib
circuits.
LEFT SIACM, SEAT SQUIB SHORT TO BATTERY - STORED
When Monitored: When the ignition is on, the Left SIACM monitors the voltage of the
Left Seat Squib circuits.
Set Condition: The Left SIACM has detected high voltage on the Left Seat Squib circuits.
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AIRBAG
LEFT SIACM, NO PCI TRANSMISSION - STORED — Continued
LEFT SIACM, SEAT SQUIB SHORT TO GROUND - STORED
When Monitored: When the ignition is on, the Left SIACM monitors the resistance of the
left Seat Squib circuits for low resistance.
Set Condition: The Left SIACM has detected a short to ground in the left Seat Squib
circuits.
ORC, INTERROGATE LEFT SIACM - STORED
When Monitored: With ignition on, the ORC monitors the PCI Bus for a Left SIACM
status message containing the airbag warning lamp 9On or OFF9 request. The status
message is sent to the ORC once each second or upon any change in the active DTCs.
Set Condition: The Code will set, if the ORC receives an 9Lamp On9 status message from
the Left SIACM. NOTE: This indicates that there was an active diagnostic trouble code in
the Left SIACM.
ORC, NO LEFT SIACM MESSAGE - STORED
When Monitored: With ignition on, the ORC monitors the PCI Bus for the Left SIACM
status message. The Left SIACM transmits the status message to the ORC at 1 - second
intervals.
Set Condition: If the ORC fails to see the Left SIACM status message on the PCI Bus for
10 seconds the code will set.
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AIRBAG
LEFT SIACM, NO PCI TRANSMISSION - STORED — Continued
POSSIBLE CAUSES
CHECKING FOR ACTIVE LEFT SIACM DTCS
STORED CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn ignition on.
NOTE: Ensure the battery is fully charged.
Active codes must be resolved before diagnosing stored codes.
With the DRBIIIt, record and erase all DTCs from all modules.
With the DRB III monitor active codes as you work through the system.
Wiggle the wiring harness and connectors of the Airbag System.
NOTE: Check connectors - Clean and repair as necessary.
The following additional checks may assist you in identifying a possible intermittent
problem:
- Visually inspect related wire harness connectors. Look for broken, bent, pushed out,
spread, corroded, or contaminated terminals.
- Visually inspect related harnesses. Look for chafed, pierced, pinched or partially
broken wire.
- Refer to Wiring Diagrams and Technical Service Bulletins that may apply.
Did the DTC become active ?
All
Yes → Select appropriate symptom from Symptom List and continue
with diagnosis.
No → No problem found at this time. NOTE: interrogate the ORC and
Right SIACM for DTCs. Erase all codes in all airbag modules
before returning vehicle to customer.
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AIRBAG
Symptom:
LEFT SIACM, NO PCM MESSAGE - ACTIVE
POSSIBLE CAUSES
PCM, PCI COMMUNICATION FAILURE
LSIACM, NO PCI MESSAGE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, select BODY, BODY COMPUTER, and PCM MONITOR.
With the DRBIIIt, read the PCM MONITOR.
Does the DRB show PCM ACTIVE ON THE BUS?
Yes → Go To 2
No → Refer to category 9 COMMUNICATION CATEGORY9 and select
the related symptom.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE LEFT SIDE IMPACT AIRBAG CONTROL MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
Replace the Left Side Impact Airbag Control Module in accordance
with Service Instructions. WARNING: make sure the battery is
disconnected and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
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Symptom:
LEFT SIACM, SEAT SQUIB CIRCUIT OPEN - ACTIVE
When Monitored and Set Condition:
LEFT SIACM, SEAT SQUIB CIRCUIT OPEN - ACTIVE
When Monitored: When the ignition is On, the Left SIACM monitors the Left Seat Squib
circuits for high resistance.
Set Condition: The Left SIACM has detected an open circuit or high resistance on the left
Seat Squib circuits.
POSSIBLE CAUSES
LEFT SEAT AIRBAG MODULE CIRCUIT OPEN
LEFT SEAT SQUIB LINE 1 CIRCUIT OPEN
AIRBAG
LEFT SEAT SQUIB LINE 2 CIRCUIT OPEN
LSIACM, LEFT SEAT SQUIB CIRCUIT OPEN
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
WARNING:TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT
TWO MINUTES BEFORE PROCEEDING.
CAUTION: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 Passenger cable to the Left Seat Airbag inline
connector.
WARNING: TURN IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the Left SIACM active DTC’s.
Does the DRB show LEFT SEAT SQUIB CIRCUIT OPEN?
Yes → Go To 2
No → Replace Left Seat Airbag.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
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AIRBAG
LEFT SIACM, SEAT SQUIB CIRCUIT OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
CAUTION: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
Disconnect the Left Side Impact Airbag Control Module Connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 SIACM Adaptor to the Left SIACM connector.
Measure the resistance of the Left Seat Squib Line 1 circuit between the Left SIACM
connector and the Left Seat Airbag connector.
Is the resistance below 1.0 ohms ?
Yes → Go To 3
No → Repair open or high resistance in the Left Seat Squib Line 1
circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
3 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
CAUTION: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
Disconnect the Left Side Impact Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 SIACM Adaptor to the Left SIACM connector.
Measure the resistance of the Left Seat Squib Line 2 circuit between the Left SIACM
connector and the Left Seat Airbag connector.
Is the resistance below 1.0 ohms?
Yes → Go To 4
No → Repair open or high resistance in the Left Seat Squib Line 2
circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
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AIRBAG
LEFT SIACM, SEAT SQUIB CIRCUIT OPEN - ACTIVE — Continued
TEST ACTION APPLICABILITY
4 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE LEFT SIDE IMPACT AIRBAG CONTROL MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
Replace the Left Side Impact Airbag Control Module in accordance
with the Service information. WARNING: Make sure the battery
is disconnected and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
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AIRBAG
Symptom:
LEFT SIACM, SEAT SQUIB CIRCUIT SHORT - ACTIVE
When Monitored and Set Condition:
LEFT SIACM, SEAT SQUIB CIRCUIT SHORT - ACTIVE
When Monitored: When the ignition is on, the Left SIACM monitors the resistance of the
Left Seat Squib circuits.
Set Condition: The Left SIACM has detected low resistance in the Left Seat Squib
circuits.
POSSIBLE CAUSES
LEFT SEAT AIRBAG CIRCUIT SHORT
LEFT SEAT SQUIB LINE 1 SHORT TO LINE 2
LSIACM, LEFT SEAT SQUIB CIRCUIT SHORT
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
CAUTION: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
NOTE: Check connectors - Clean repair as necessary.
Connect the SRS Load Tool 8443 SIACM Adaptor to the LSIACM connector.
Turn Ignition On and then reconnect the Battery.
With the DRB, read the active codes.
Does the DRB show LEFT SEAT SQUIB CIRCUIT SHORT?
Yes → Go To 2
No → Replace Left Seat Airbag.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
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AIRBAG
LEFT SIACM, SEAT SQUIB CIRCUIT SHORT - ACTIVE — Continued
TEST ACTION APPLICABILITY
2 WARNING: Turn Ignition OFF. Disconnect the Battery and wait 2 minutes
before proceeding.
CAUTION: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
Disconnect the Left Side Impact Airbag Control Module connector
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 SIACM Adaptor to the Left Seat Airbag connector.
Measure the resistance between the Left Seat Squib Line 1 and line 2 at the Left Side
Impact Airbag Control Module connector.
Is the resistance below 5.0 Ohms?
Yes → Repair Left Seat Squib Line 1 short to the Left Seat Squib Line 2
circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
No → Go To 3
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
3 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE LEFT SIDE IMPACT AIRBAG CONTROL MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
Replace the Left Side Impact Airbag Control Module in accordance
with Service Instructions. WARNING: make sure the battery is
disconnected and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
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AIRBAG
Symptom:
LEFT SIACM, SEAT SQUIB SHORT TO BATTERY - ACTIVE
When Monitored and Set Condition:
LEFT SIACM, SEAT SQUIB SHORT TO BATTERY - ACTIVE
When Monitored: When the ignition is on, the Left SIACM monitors the voltage of the left
Seat Squib circuits.
Set Condition: The Left SIACM has detected high voltage on the Left Seat Squib circuits.
POSSIBLE CAUSES
LEFT SEAT AIRBAG CIRCUIT SHORT TO BATTERY
LEFT SEAT SQUIB LINE 1 SHORT TO BATTERY
LEFT SEAT SQUIB LINE 2 SHORT TO BATTERY
LSIACM, LEFT SEAT SQUIB CIRCUIT SHORT TO BATTERY
TEST ACTION APPLICABILITY
1 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 Passenger cable to he Left Seat Airbag inline
connector.
Turn Ignition On, then reconnect the Battery.
With the DRBIIIt, read active Side Airbag DTC’s.
Does the DRBIIIt display LEFT SEAT SQUIB SHORT TO BATTERY?
Yes → Go To 2
No → Replace Left Seat Airbag.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
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AIRBAG
LEFT SIACM, SEAT SQUIB SHORT TO BATTERY - ACTIVE — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED SIDE AIRBAG
FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO
THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
Disconnect the Left Side Impact Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 SIACM adaptor to the Left Side Impact Airbag
Control Module connector.
Turn Ignition On, then reconnect the Battery.
Measure the voltage of the Left Seat Squib Line 2 circuit in the Left Side Impact
Control Module connector.
Is there any voltage present?
Yes → Repair Left Seat Squib Line 2 short to battery.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
No → Go To 3
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
3 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
Disconnect the Left Side Impact Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 SIACM adaptor to the Left Side Impact Airbag
Control Module connector.
Turn Ignition On, then reconnect the Battery.
Measure the voltage of the Left Seat Squib Line 1 circuit in the Left Side Impact
Airbag Control Module connector.
Is there any voltage present?
Yes → Repair Left Seat Squib Line 1 short to battery.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
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AIRBAG
LEFT SIACM, SEAT SQUIB SHORT TO BATTERY - ACTIVE — Continued
TEST ACTION APPLICABILITY
4 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE LEFT SIDE IMPACT AIRBAG CONTROL MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
Replace the Left Side Impact Airbag Control Module in accordance
with Service Instructions. WARNING: make sure the battery is
disconnected and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
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Symptom:
LEFT SIACM, SEAT SQUIB SHORT TO GROUND - ACTIVE
When Monitored and Set Condition:
LEFT SIACM, SEAT SQUIB SHORT TO GROUND - ACTIVE
When Monitored: When the ignition is on, the Left SIACM monitors the resistance of the
left Seat Squib circuits for low resistance.
Set Condition: The Left SIACM has detected a short to ground in the left Seat Squib
circuits.
POSSIBLE CAUSES
LEFT SEAT AIRBAG CIRCUIT SHORT TO GROUND
LEFT SEAT SQUIB LINE 1 SHORT TO GROUND
AIRBAG
LEFT SEAT SQUIB LINE 2 SHORT TO GROUND
LSIACM, LEFT SEAT SQUIB CIRCUIT SHORT TO GROUND
TEST ACTION APPLICABILITY
1 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
NOTE: Check connectors - Clean and repair as necessary.
Connect the Airbag System Load Tool 8443 Passenger cable and jumper harness to
the Left Seat Airbag inline connector.
Turn ignition on, then reconnect the battery.
With the DRBIIIt, read active Side Airbag DTC’s.
Does the DRBIIIt display 9LEFT SEAT SQUIB SHORTED TO GROUND9?
Yes → Go To 2
No → Replace the Left Seat Airbag.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
All
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AIRBAG
LEFT SIACM, SEAT SQUIB SHORT TO GROUND - ACTIVE — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
Disconnect the Left Side Impact Airbag Control Module connector
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 SIACM adaptor to the Left Side Impact Airbag
Control Module connector.
Measure the resistance of the Left Seat Squib Line 2 circuit between the Left Side
Impact Airbag Control Module connector and ground.
Is the resistance below 5.0 Ohms on the Left Seat Squib Line 2 circuit?
Yes → Repair Left Seat Squib Line 2 short to ground.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
No → Go To 3
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
3 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED SEAT BACK PADDED SIDE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL
INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN
SERIOUS OR FATAL INJURY.
Disconnect the Left Seat Airbag inline connector located between the seat back and
seat cushion.
Do not disconnect the airbag connectors at the base of the seat.
Disconnect the Left Side Impact Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the SRS Load Tool 8443 SIACM adaptor to the Left Side Impact Airbag
Control Module connector.
Measure the resistance of the Left Seat Squib Line 1 circuit between the Left SIACM
connector and ground.
Is the resistance below 5.0 Ohms on the Left Seat Squib Line 1 circuit?
Yes → Repair Left Seat Squib Line 1 short to ground.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
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AIRBAG
LEFT SIACM, SEAT SQUIB SHORT TO GROUND - ACTIVE — Continued
TEST ACTION APPLICABILITY
4 WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE LEFT SIDE IMPACT AIRBAG CONTROL MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
Replace the Left Side Impact Airbag Control Module in accordance
with Service Instructions. WARNING: make sure the battery is
disconnected and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
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AIRBAG
Symptom List:
ORC ACCELEROMETER - ACTIVE
ORC ACCELEROMETER - STORED
ORC INTERNAL 1 - ACTIVE
ORC INTERNAL 1 - STORED
ORC INTERNAL 2 - ACTIVE
ORC INTERNAL 2 - STORED
ORC OUTPUT DRIVER 1 - ACTIVE
ORC OUTPUT DRIVER 1 - STORED
ORC OUTPUT DRIVER 2 - ACTIVE
ORC OUTPUT DRIVER 2 - STORED
ORC STORED ENERGY FIRING - ACTIVE
ORC STORED ENERGY FIRING - STORED
ORC, NO PCI TRANSMISSION - ACTIVE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be ORC ACCELEROMETER ACTIVE.
When Monitored and Set Condition:
ORC ACCELEROMETER - ACTIVE
When Monitored: When the ignition is on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC ACCELEROMETER - STORED
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC INTERNAL 1 - ACTIVE
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC INTERNAL 1 - STORED
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
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ORC ACCELEROMETER - ACTIVE — Continued
ORC INTERNAL 2 - ACTIVE
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC INTERNAL 2 - STORED
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC OUTPUT DRIVER 1 - ACTIVE
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
AIRBAG
ORC OUTPUT DRIVER 1 - STORED
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC OUTPUT DRIVER 2 - ACTIVE
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC OUTPUT DRIVER 2 - STORED
When Monitored: When the ignition on, the ORC on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC STORED ENERGY FIRING - ACTIVE
When Monitored: Continuously with ignition on.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
ORC STORED ENERGY FIRING - STORED
When Monitored: Continuously with ignition on.
Set Condition: This DTC will set if the ORC identifies an out of range internal circuit.
71
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