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SERVICE MANUAL
2004
300M, CONCORDE
AND INTREPID
To order the special service tools used and
illustrated, please refer to the instructions on
inside back cover.
NO PART OF THIS PUBLICATION MAY BE
REPRODUCED, STORED IN A RETRIEVAL
SYSTEM, OR TRANSMITTED, IN ANY FORM OR
BY ANY MEANS, ELECTRONIC, MECHANICAL,
PHOTOCOPYING, RECORDING, OR OTHERWISE,
WITHOUT THE PRIOR WRITTEN PERMISSION
OF DAIMLERCHRYSLER CORPORATION.
DaimlerChrysler Corporation reserves the right to make changes in design or
to make additions to or improvements in its products without imposing any
obligations upon itself to install them on its products previously manufactured.
Litho in U.S.A. Copyright © 2003 DaimlerChrysler Corporation
7.0M0203
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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
solid bar after the group title is aligned to a solid tab on the first page of each group. The first page of the
group has a contents section that lists major topics within the group. If you are not sure which Group contains
the information you need, look up the Component/System in the alphabetical index located in the rear of this
manual.
A Service Manual Comment form is included at the rear of this manual. Use the form to provide
DaimlerChrysler Corporation with your comments and suggestions.
Tightening torques are provided as a specific value throughout this manual. This value represents the
midpoint of the acceptable engineering torque range for a given fastener application. These torque values are
intended for use in service assembly and installation procedures using the correct OEM fasteners. When
replacing fasteners, always use the same type (part number) fastener as removed.
DaimlerChrysler Corporation reserves the right to change testing procedures, specifications, diagnosis,
repair methods, or vehicle wiring at any time without prior notice or incurring obligation.
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TABLE OF CONTENTS
1.0 INTRODUCTION .........................................................1
1.1 SYSTEM COVERAGE ...............................................1
1.2 SIX STEP TROUBLESHOOTING PROCEDURE ..........................1
1.3 FUSES AND LIGHT BULBS ...........................................1
2.0 IDENTIFICATION OF SYSTEM .............................................1
3.0 SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION......................1
3.1 AIRBAG SYSTEM ...................................................2
3.1.1 DRIVER AIRBAG (DAB) ......................................2
3.1.2 CLOCKSPRING.............................................3
3.1.3 PASSENGER AIRBAG (PAB)..................................3
3.1.4 SIDE IMPACTAIRBAG CONTROL MODULES (SIACM) ............3
3.1.5 SEAT AIRBAG ..............................................4
3.1.6 SPECIAL TOOLS............................................4
3.1.7 DIAGNOSTIC TROUBLE CODES ..............................4
3.1.7.1 ACTIVE CODES ............................................4
3.1.7.2 STORED CODES ...........................................5
3.2 AUDIO SYSTEM ....................................................5
3.3 BODY CONTROL MODULE ...........................................6
3.4 CHIME SYSTEM ....................................................8
3.5 DOOR AJAR SYSTEM ...............................................8
3.6 CLIMATE CONTROL SYSTEMS .......................................8
3.6.1 AUTOMATIC TEMPERATURE CONTROL (ATC) ..................8
3.6.2 MANUAL TEMPERATURE CONTROL...........................8
3.6.3 HVAC BLEND, MODE, AND RECIRCULATION DOOR OPERATION . .8
3.6.4 REAR WINDOW DEFOGGER .................................9
3.7 EXTERIOR LIGHTING SYSTEM .......................................9
3.7.1 EXTERIOR LIGHTING BATTERY SAVER........................9
3.7.2 HEADLAMP DELAY .........................................9
3.7.3 HEADLAMP SWITCH ........................................9
3.7.4 FOG LAMP CONTROL .......................................9
3.7.5 AUTO HEADLAMPS .........................................9
3.8 INTERIOR LIGHTING ................................................9
3.8.1 COURTESY LAMP CONTROL.................................9
3.8.2 ILLUMINATED ENTRY .......................................9
3.9 MECHANICAL INSTRUMENT CLUSTER ................................9
3.10 MEMORY SYSTEM.................................................10
3.10.1 POWER SEAT.............................................10
3.10.2 MEMORY SEAT GLIDE .....................................10
3.10.3 GUARD BANDS ...........................................10
3.10.4 MEMORY MIRROR.........................................10
3.10.5 HEATEDSEATS ...........................................11
3.11 COMPASS/MINI-TRIP COMPUTER OR ELECTRONIC VEHICLE
INFORMATION CENTER ............................................11
3.11.1 TRAVELER DISPLAY FUNCTIONS ............................12
3.11.2 SETTING MAGNETIC ZONE VARIANCE .......................13
3.11.3 COMPASS CALIBRATION ...................................13
3.11.4 DIAGNOSIS AND TESTING ..................................13
3.11.5 AMBIENT TEMPERATURE SENSOR ..........................14
3.11.6 HOMELINKT UNIVERSAL TRANSMITTER......................14
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TABLE OF CONTENTS - Continued
3.12 TIRE PRESSURE MONITORING SYSTEM .............................14
3.12.1 TRAINING THE EVIC .......................................14
3.12.2 PRESSURE THRESHOLDS ...................................15
3.12.3 CRITICAL AND NON-CRITICAL PRESSURE ALERTS ............15
3.12.4 SYSTEM FAULTS..........................................16
3.12.5 SPARE WHEEL AUTO-LOCATE (5-TIRE TPM SYSTEM ONLY) ....16
3.12.6 REMOVE MAGNET FROM SPARE (5-TIRE TPM SYSTEM ONLY) . .16
3.12.7 TIRE PRESSURE NOW AVAILABLE...........................16
3.12.8 DIAGNOSING AND CLEARING SYSTEM FAULTS ...............16
3.12.9 SYSTEM TEST ............................................17
3.13 POWER DOOR LOCK SYSTEM ......................................17
3.14 SENTRY KEY IMMOBILIZER SYSTEM (SKIS)...........................17
3.15 SPEED PROPORTIONAL STEERING (IF EQUIPPED) ....................17
3.16 VEHICLE COMMUNICATION.........................................18
3.16.1 BUS FAILURE MESSAGE ...................................20
3.17 VEHICLE THEFT SECURITY SYSTEM.................................20
3.18 WIPER SYSTEM...................................................20
3.18.1 SYSTEM FEATURES .......................................21
3.19 USING THE DRBIIIT ................................................21
3.20 DRBIIIT ERROR MESSAGES ........................................21
3.21 DRBIIIT DOES NOT POWER UP (BLANK SCREEN)......................21
3.22 DISPLAY IS NOT VISIBLE ...........................................21
4.0 DISCLAIMERS, SAFETY, WARNINGS ......................................21
4.1 DISCLAIMERS.....................................................21
4.2 SAFETY..........................................................22
4.2.1 TECHNICIAN SAFETY INFORMATION.........................22
4.2.2 VEHICLE PREPARATION FOR TESTING.......................22
4.2.3 SERVICING SUB-ASSEMBLIES ..............................22
4.2.4 DRBIIIT SAFETY INFORMATION..............................22
4.3 WARNINGS.......................................................23
4.3.1 VEHICLE DAMAGE WRANINGS ..............................23
4.3.2 ROAD TESTING A COMPLAINT VEHICLE......................23
5.0 REQUIRED TOOLS AND EQUIPMENT .....................................23
6.0 GLOSSARY OF TERMS..................................................23
7.0 DIAGNOSTIC INFORMATION AND PROCEDURES ...........................25
AIRBAG
ACCELEROMETER 1....................................................26
ACCELEROMETER 2....................................................26
INTERNAL 1 ...........................................................26
INTERNAL 2 ...........................................................26
OUTPUT DRIVER 1 .....................................................26
OUTPUT DRIVER 2 .....................................................26
STORED ENERGY FIRING 1..............................................26
AIRBAG WARNING INDICATOR OPEN .....................................28
AIRBAG WARNING INDICATOR SHORT ....................................28
CALIBRATION MISMATCH................................................30
CLUSTER MESSAGE MISMATCH .........................................32
CONFIGURATION ERROR ...............................................34
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TABLE OF CONTENTS - Continued
DRIVER SQUIB 1 CIRCUIT OPEN .........................................36
DRIVER SQUIB 1 CIRCUIT SHORT ........................................39
DRIVER SQUIB 1 SHORT TO BATTERY ....................................41
DRIVER SQUIB 1 SHORT TO GROUND ....................................44
INTERROGATE LEFT SIACM .............................................47
INTERROGATE RIGHT SIACM ............................................49
LOSS OF IGNITION RUN - START.........................................51
LOSS OF IGNITION RUN ONLY ...........................................54
MODULE NOT CONFIGURED FOR SAB ....................................57
NO CLUSTER MESSAGE ................................................59
NO LEFT SIACM MESSAGE ..............................................61
NO ODOMETER MESSAGE ..............................................63
NO PCI TRANSMISSION .................................................65
NO RIGHT SIACM MESSAGE .............................................68
PASSENGER SQUIB 1 CIRCUIT OPEN .....................................70
PASSENGER SQUIB 1 CIRCUIT SHORT....................................73
PASSENGER SQUIB 1 SHORT TO BATTERY................................75
PASSENGER SQUIB 1 SHORT TO GROUND ................................77
SEAT SQUIB CIRCUIT OPEN .............................................79
SEAT SQUIB CIRCUIT SHORT ............................................82
SEAT SQUIB SHORT TO BATTERY ........................................85
SEAT SQUIB SHORT TO GROUND ........................................88
VEHICLE BODY STYLE UNKNOWN........................................91
*AIRBAG INDICATOR ON WITHOUT ACM TROUBLE CODES ..................93
AUDIO
ALL OUTPUTS SHORT ..................................................94
CASSETTE PLAYER INOP ...............................................96
CD MECHANICAL FAILURE ..............................................96
*AM/FM SWITCH INOPERATIVE...........................................96
*ANY STATION PRESET SWITCH INOPERATIVE.............................96
*BALANCE INOPERATIVE................................................96
*CD EJECT SWITCH INOPERATIVE........................................96
*EQUALIZER INOPERATIVE ..............................................96
*FADER INOPERATIVE ..................................................96
*FF/RW SWITCH INOPERATIVE...........................................96
*HOUR/MINUTE SWITCHES INOPERATIVE .................................96
*PAUSE/PLAY SWITCH INOPERATIVE .....................................96
*PWR SWITCH INOPERATIVE ............................................96
*SCAN SWITCH INOPERATIVE............................................96
*SEEK SWITCH INOPERATIVE............................................96
*SET SWITCH INOPERATIVE .............................................96
*TAPE EJECT SWITCH INOPERATIVE......................................96
*TIME SWITCH INOPERATIVE ............................................96
*TUNE SWITCH INOPERATIVE............................................96
CD CHANGER MECHANICAL FAILURE.....................................98
CD CHANGER READ FAILURE............................................99
CD CHANGER TEMPERATURE HIGH .....................................100
CD PLAY FAILURE.....................................................101
CD READ FAILURE ....................................................102
CD TEMPERATURE HIGH...............................................103
LOW VOLTAGE LEVEL .................................................104
NO ANTENNA CONNECTION ............................................105
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TABLE OF CONTENTS - Continued
POWER AMP SHUTDOWN ..............................................107
REMOTE RADIO SWITCH OPEN .........................................109
REMOTE RADIO SWITCH SHORTED TO GROUND..........................111
*NO SOUND FROM ALL SPEAKERS ......................................114
*ONE REMOTE RADIO SWITCH INOPERATIVE .............................118
*REMOTE RADIO SWITCHES INOPERATIVE WITH IGNITION ON..............119
CHIME
*CHIME INOPERATIVE..................................................120
*CHIME SOUNDS WITH DRIVER DOOR OPEN KEY REMOVED ...............121
*KEY IN IGNITION AND DRIVER’S DOOR OPEN CHIME INOPERATIVE.........122
*VEHICLE SPEED WARNING CHIME PROBLEM ............................124
COMMUNICATION
ATC MESSAGES NOT RECEIVED ........................................125
BATTERY POWER TO MODULE DISCONNECTED ..........................126
EATX BUS COMMUNICATION FAILURE ...................................127
EEPROM CHECKSUM FAILURE..........................................128
HEAD STATUS RX FAILURE.............................................129
INTERNAL BASE/PREM SELECT CIRCUIT.................................131
MHSMM MESSAGES NOT RECEIVED ....................................132
MIC MESSAGES NOT RECEIVED ........................................133
NO PCI MESSAGES FROM CD CHANGER.................................134
OTIS MESSAGES NOT RECEIVED .......................................136
POST FAILURE........................................................137
SBEC BUS COMMUNICATION FAILURE ...................................138
SKIM MESSAGES NOT RECEIVED .......................................140
*NO RESPONSE FROM ACM ............................................141
*NO RESPONSE FROM AUTOMATIC TEMPERATURE CONTROL MODULE .....143
*NO RESPONSE FROM BODY CONTROL MODULE .........................145
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE ...................147
*NO RESPONSE FROM INSTRUMENT CLUSTER ...........................150
*NO RESPONSE FROM LEFT SIACM .....................................152
*NO RESPONSE FROM MEMORY HEATED SEAT/MIRROR MODULE ..........155
*NO RESPONSE FROM OTIS/EVIC .......................................157
*NO RESPONSE FROM PCM (PCI BUS)...................................159
*NO RESPONSE FROM PCM (PCM SCI ONLY) .............................161
*NO RESPONSE FROM RADIO ..........................................164
*NO RESPONSE FROM RIGHT SIACM ....................................167
*NO RESPONSE FROM SENTRY KEY IMMOBILIZER MODULE ...............170
*NO RESPONSE FROM TRANSMISSION CONTROL MODULE ................172
*ODOMETER DISPLAYS NO BUS ........................................175
*PCI BUS COMMUNICATION FAILURE ....................................176
DOOR AJAR
*DRIVER DOOR AJAR CKT OPEN ........................................179
*DRIVER DOOR AJAR CKT STG .........................................180
*LEFT REAR DOOR AJAR CKT OPEN.....................................181
*LEFT REAR DOOR AJAR CKT STG ......................................182
*PASS DOOR AJAR CKT OPEN ..........................................183
*PASS DOOR AJAR CKT STG............................................184
*RIGHT REAR DOOR AJAR CKT OPEN ...................................185
*RIGHT REAR DOOR AJAR CKT STG .....................................186
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TABLE OF CONTENTS - Continued
ELECTRICALLY HEATED SYSTEMS
DRIVER HEATED SEAT SWITCH OPEN/SHORTED TO GROUND ..............187
DRIVER HEATED SEAT SWITCH STUCK IN HIGH STATE ....................189
DRIVER HEATED SEAT SWITCH STUCK IN LOW STATE.....................189
DRIVER SEAT HEAT OUTPUT OPEN......................................191
DRIVER SEAT HEAT OUTPUT SHORT TO GND.............................193
DRIVER THERMISTOR OUT OF RANGE HIGH .............................195
DRIVER THERMISTOR OUT OF RANGE LOW ..............................197
PASSENGER HEATED SEAT SWITCH OPEN/SHORTED TO GROUND..........200
PASSENGER HEATED SEAT SWITCH STUCK IN HIGH STATE ................202
PASSENGER HEATED SEAT SWITCH STUCK IN LOW STATE ................202
PASSENGER SEAT HEAT OUTPUT OPEN .................................204
PASSENGER SEAT HEAT OUTPUT SHORT TO GND ........................207
PASSENGER THERMISTOR OUT OF RANGE HIGH .........................209
PASSENGER THERMISTOR OUT OF RANGE LOW..........................211
*HEATED SEATS INOPERATIVE DUE TO KEY-IN IGNITION SWITCH INPUT.....214
*REAR WINDOW DEFOGGER INOPERATIVE MANUAL AIR CONDITIONING.....216
*REAR WINDOW DEFOGGER INOPERATIVE WITH ATC .....................219
EXTERIOR LIGHTING
HEADLAMP SWITCH INPUT FAILURE.....................................222
*AUTO HEADLAMPS AND OR FOG LAMPS NOT OPERATING PROPERLY ......224
*FOG LAMPS WILL NOT TURN OFF ......................................227
*FOG LAMPS WILL NOT TURN ON .......................................228
*HEADLAMP TIME DELAY INOPERATIVE..................................230
*HIGH BEAM HEADLAMPS WILL NOT TURN OFF...........................231
*HIGH BEAM HEADLAMPS WILL NOT TURN ON............................232
*LOW BEAM HEADLAMPS WILL NOT TURN OFF ...........................235
*LOW BEAM HEADLAMPS WILL NOT TURN ON ............................236
*PARK LAMPS WILL NOT TURN OFF .....................................238
*PARK LAMPS WILL NOT TURN ON ......................................239
HEATING & A/C
A/C CONTROL A/C SWITCH FAILURE (MANUAL A/C)........................242
A/C CONTROL BLEND DOOR INPUT OPEN OR SHORTED TO GROUND
(MANUAL A/C).........................................................244
A/C CONTROL BLEND DOOR INPUT SHORTED TO BATTERY (MANUAL A/C) . . .246
A/C CONTROL EBL SWITCH FAILURE (MANUAL A/C) .......................247
A/C CONTROL MODE DOOR INPUT OPEN OR SHORTED TO BATTERY
(MANUAL A/C).........................................................249
A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND (MANUAL A/C). . . .251
ATC A/C SWITCH FAILURE..............................................252
ATC AUTO SWITCH FAILURE............................................253
ATC BILEVEL SWITCH FAILURE .........................................254
ATC DEFROST SWITCH FAILURE ........................................255
ATC EBL SWITCH FAILURE .............................................256
ATC FLOOR SWITCH FAILURE ..........................................257
ATC MIX SWITCH FAILURE .............................................258
ATC OFF SWITCH FAILURE .............................................259
ATC PANEL SWITCH FAILURE...........................................260
ATC RECIRCULATION SWITCH FAILURE..................................261
ATC TEMPERATURE DOWN SWITCH FAILURE.............................262
ATC TEMPERATURE UP SWITCH FAILURE ................................263
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TABLE OF CONTENTS - Continued
BLEND DOOR FEEDBACK FAILURE ......................................264
BLEND DOOR OUTPUT SHORTED TO BATTERY ...........................271
BLEND DOOR OUTPUT SHORTED TO GROUND ...........................274
BLEND DOOR STALL TEST FAILURE .....................................276
COMMON OUTPUT SHORTED TO BATTERY...............................283
COMMON OUTPUT SHORTED TO GROUND ...............................286
EVAPORATOR TEMPERATURE SENSOR FAILURE..........................288
HEAD STATUS RX FAILURE.............................................291
IN CAR TEMP SENSOR FAILURE (ATC ASPIRATOR FAILURE)................292
MODE DOOR FEEDBACK FAILURE.......................................297
MODE DOOR OUTPUT SHORTED TO BATTERY............................304
MODE DOOR OUTPUT SHORTED TO GROUND............................307
MODE DOOR STALL TEST FAILURE......................................309
RECIRC DOOR OUTPUT SHORTED TO BATTERY ..........................316
RECIRC DOOR OUTPUT SHORTED TO GROUND ..........................319
RECIRCULATION DOOR TEST FAILURE (INOPERATIVE OR STALL) ...........320
SUN LOAD SENSOR FAILURE...........................................323
*ATC BLOWER MOTOR INOPERATIVE ....................................325
*ATC BLOWER MOTOR SPEEDS INCORRECT .............................328
*ATC HEAD ILLUMINATION INOPERATIVE.................................330
*ATC SYSTEM TEST ...................................................331
*ATC TEMPERATURE CONTROL INCORRECT IN SUN OR SHADE ............332
*BLEND DOOR INOPERATIVE ...........................................334
*MANUAL A/C BLOWER MOTOR INOPERATIVE ............................336
*MANUAL A/C BLOWER MOTOR SPEEDS INCORRECT......................339
*MANUAL A/C CONTROL HEAD ILLUMINATION.............................340
*MANUAL A/C CONTROL HEAD SWITCH INOPERATIVE .....................341
*MANUAL A/C SYSTEM TEST............................................342
*MODE DOOR INOPERATIVE............................................343
INSTRUMENT CLUSTER
BCM - DIMMING LEVEL SWITCH FAILURE.................................345
BCM - FUEL LEVEL SENDING UNIT FAILURE ..............................349
NO MESSAGES FROM ABS .............................................351
NO MESSAGES FROM AECM ...........................................351
NO MESSAGES FROM BCM.............................................351
NO MESSAGES FROM EATX ............................................351
NO MESSAGES FROM PCM.............................................351
*AIRBAG WARNING INDICATOR NOT OPERATING PROPERLY ...............353
*ALL GAUGES INOPERATIVE............................................354
*BRAKE WARNING INDICATOR INOPERATIVE .............................356
*CHARGING INDICATOR NOT OPERATING PROPERLY......................359
*CHECK ENGINE INDICATOR NOT OPERATING PROPERLY .................360
*CLUSTER AND PANEL ILLUMINATION PROBLEMS.........................361
*CRUISE ON INDICATOR NOT OPERATING PROPERLY .....................364
*DECKLID AJAR INDICATOR NOT OPERATING PROPERLY ..................365
*DOOR AJAR INDICATOR NOT OPERATING PROPERLY.....................367
*ENGINE COOLANT TEMPERATURE INDICATOR NOT OPERATING PROPERLY.368
*FUEL GAUGE NOT OPERATING PROPERLY ..............................369
*LOW FUEL INDICATOR NOT OPERATING PROPERLY ......................372
*LOW WASHER FLUID INDICATOR NOT OPERATING PROPERLY.............373
*ODOMETER NOT OPERATING PROPERLY ...............................375
*OIL PRESSURE WARNING INDICATOR NOT OPERATING PROPERLY.........376
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TABLE OF CONTENTS - Continued
*PRND3L INDICATOR MALFUNCTION.....................................379
*SEAT BELT INDICATOR NOT OPERATING PROPERLY......................380
*SPEEDOMETER GAUGE NOT OPERATING PROPERLY.....................383
*TACHOMETER NOT OPERATING PROPERLY .............................385
*TEMPERATURE GAUGE NOT OPERATING PROPERLY .....................387
INTERIOR LIGHTING
COURTESY LAMP OUTPUT SHORT TO BATTERY ..........................389
*COURT LMPS INOP ...................................................391
*COURTESY LAMPS INOPERATIVE FROM DRIVERS DOOR..................391
*COURTESY LAMPS INOPERATIVE - ALL LAMPS...........................392
*COURTESY LAMPS INOPERATIVE - DOOR LAMPS ........................393
*COURTESY LAMPS INOPERATIVE - OVERHEAD LAMPS....................394
*COURTESY LAMPS INOPERATIVE FROM DOME LAMP SWITCH ONLY .......395
*COURTESY LAMPS INOPERATIVE FROM LEFT REAR DOOR................396
*COURTESY LAMPS INOPERATIVE FROM PASSENGER DOOR ..............397
*COURTESY LAMPS INOPERATIVE FROM RIGHT REAR DOOR ..............398
*COURTESY LAMPS STAY ON AT ALL TIMES ..............................399
MEMORY SEAT
CHARGING VOLTAGE HIGH MESSAGE ...................................402
CHARGING VOLTAGE LOW MESSAGE....................................404
DRIVER MIRROR HORIZONTAL SENSOR OUT OF RANGE HIGH .............406
DRIVER MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW..............407
DRIVER MIRROR VERTICAL SENSOR OUT OF RANGE HIGH ................409
DRIVER MIRROR VERTICAL SENSOR OUT OF RANGE LOW.................410
EEPROM REFRESH FAILURE ...........................................412
FRONT RISER DOWN POSITION STUCK ..................................413
FRONT RISER SENSOR OUT OF RANGE HIGH ............................414
FRONT RISER SENSOR OUT OF RANGE LOW.............................416
FRONT RISER UP POSITION STUCK .....................................419
HORIZONTAL FORWARD POSITION STUCK ...............................420
HORIZONTAL REARWARD POSITION STUCK ..............................421
HORIZONTAL SENSOR OUT OF RANGE HIGH .............................422
HORIZONTAL SENSOR OUT OF RANGE LOW .............................424
IGNITION STATUS MESSAGE NOT RECEIVED .............................427
LOSS OF ENGINE RPM MESSAGE .......................................429
MEMORY POSITION #1 STUCK ..........................................430
MEMORY POSITION #2 STUCK ..........................................431
MEMORY SET 9S9 POSITION STUCK .....................................432
PASSENGER MIRROR HORIZONTAL SENSOR OUT OF RANGE HIGH
(IF EQUIPPED) ........................................................433
PASSENGER MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW
(IF EQUIPPED) ........................................................434
PASSENGER MIRROR VERTICAL SENSOR OUT OF RANGE HIGH
(IF EQUIPPED) ........................................................436
PASSENGER MIRROR VERTICAL SENSOR OUT OF RANGE LOW
(IF EQUIPPED) ........................................................437
PRNDL DISP MSG NOT RECEIVED.......................................439
REAR RISER DOWN POSITION STUCK ...................................441
REAR RISER SENSOR OUT OF RANGE HIGH .............................442
REAR RISER SENSOR OUT OF RANGE LOW..............................444
REAR RISER UP POSITION STUCK ......................................447
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TABLE OF CONTENTS - Continued
RECLINER DOWN POSITION STUCK .....................................448
RECLINER SENSOR OUT OF RANGE HIGH ...............................449
RECLINER SENSOR OUT OF RANGE LOW................................451
RECLINER UP POSITION STUCK ........................................454
*DRIVER MIRROR INOPERATIVE FROM MEMORY..........................455
*MEMORY SWITCH INOPERATIVE .......................................457
*PASSENGER MIRROR INOPERATIVE FROM MEMORY (IF EQUIPPED)........459
OVERHEAD CONSOLE
BUS MESSAGES MISSING ..............................................461
CMTC INTERNAL FAILURE..............................................462
EVIC INTERNAL FAILURE...............................................462
COMPASS TEST FAILURE ..............................................463
DEMAGNETIZE COMPASS ..............................................464
NO BCM MESSAGES RECEIVED.........................................465
NO PCM MESSAGES RECEIVED.........................................466
SET COMPASS VARIANCE AS PER SERVICE INFORMATION.................467
*DISPLAY SEGMENTS FAIL TO ILLUMINATE ...............................468
*DISTANCE TO EMPTY INOPERATIVE OR WRONG .........................468
*ELAPSED TIME INOPERATIVE OR WRONG ...............................468
*MILEAGE AND DISTANCE FUNCTIONS...................................468
*EVIC INOPERATIVE ...................................................469
*EVIC SELF TEST .....................................................470
*OTIS SCREEN DISPLAYS FAIL..........................................471
*TEMPERATURE DISPLAY INOPERATIVE OR WRONG ......................472
POWER DOOR LOCKS/RKE
DECKLID RELEASE SOLENOID OUTPUT FAILURE .........................473
DECKLID RELEASE SWITCH FAILURE....................................476
DRIVER DOOR CENTRAL LOCK (ARM)/UNLOCK (DISARM) SWITCH FAILURE . .478
RKE FOB BATTERY LOW ...............................................480
RKE PROGRAM MODE ENTERED WITHOUT PROGRAM REQUEST ...........481
RKE UNABLE TO ENTER PROGRAM MODE ...............................482
*ALL DOORS FAILING TO LOCK AND UNLOCK FROM ANY SWITCH...........483
*ALL DOORS FAILING TO LOCK AND UNLOCK FROM ONE SWITCH ..........489
*ALL DOORS FAILING TO LOCK FROM ANY SWITCH .......................492
*ALL DOORS FAILING TO LOCK FROM ONE SWITCH .......................494
*ALL DOORS FAILING TO UNLOCK FROM ANY SWITCH.....................495
*ALL DOORS FAILING TO UNLOCK FROM ONE SWITCH ....................497
*AUTOMATIC (ROLLING) DOOR LOCKS INOPERATIVE ......................498
*DECKLID RELEASE INOPERATIVE ......................................499
*DOOR LOCK INHIBIT INOPERATIVE .....................................501
*DRIVER DOOR FAILS TO LOCK FROM ANY SWITCH.......................503
*DRIVER DOOR FAILS TO UNLOCK FROM ANY SWITCH ....................504
*ONE DOOR FAILS TO LOCK AND UNLOCK FROM ANY SWITCH .............505
*REMOTE KEYLESS ENTRY PROBLEM ...................................507
*RKE HORN CHIRP INOPERATIVE .......................................509
SPEED PRO STEERING
SPEED PRO STEERING CKT SHORT TO VOLTAGE.........................510
SPEED PRO STEERING SOLENOID CKT OPEN/SHORTED TO GROUND.......512
SPEED PRO STEERING SOLENOID OVER-TEMPERATURE ..................515
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TABLE OF CONTENTS - Continued
TIRE PRESSURE MONITORING
LF SENSOR BATTERY LOW.............................................517
LF TIRE PRESSURE SENSOR FAILURE...................................517
LR SENSOR BATTERY LOW.............................................517
LR TIRE PRESSURE SENSOR FAILURE...................................517
RF SENSOR BATTERY LOW ............................................517
RF TIRE PRESSURE SENSOR FAILURE ..................................517
RR SENSOR BATTERY LOW ............................................517
RR TIRE PRESSURE SENSOR FAILURE ..................................517
SPARE TIRE PRESSURE SENSOR FAILURE...............................517
SPARE TIRE SENSOR BATTERY LOW ....................................517
VEHICLE THEFT/SECURITY
*ALARM TRIPS ON ITS OWN ............................................520
*DRIVER DOOR KEY FAILS TO ARM OR TO DISARM VTSS ..................521
*HAZARD LAMPS FAIL TO FLASH ........................................522
*HEADLAMP/PARK LAMPS FAIL TO FLASH WITH ALARM TRIPPED ...........523
*HORN FAILS TO SOUND WITH ALARM TRIPPED ..........................524
*VTSS DOES NOT TRIP FROM DRIVERS DOOR............................525
*VTSS DOES NOT TRIP FROM LEFT REAR DOOR..........................526
*VTSS DOES NOT TRIP FROM PASSENGER FRONT DOOR..................527
*VTSS DOES NOT TRIP FROM RIGHT REAR DOOR ........................528
*VTSS DOES NOT TRIP WITH TRUNK KNOCKOUT SWITCH .................529
*VTSS INDICATOR INOPERATIVE ........................................530
*VTSS WILL NOT ARM..................................................531
WINDSHIELD WIPER & WASHER
WIPER PARK SWITCH FAILURE/WIPERS RUN CONTINUOUSLY ..............532
*HEADLAMP WASHERS NOT OPERATING PROPERLY ......................534
*WASHER, INOPERATIVE...............................................538
*WASHER, RUNS ALL THE TIME WITH IGNITION ON........................541
*WIPER, NOT WORKING IN THE LOW SPEED .............................542
*WIPER, ERRATIC OPERATION IN INTERMITTENT SPEEDS .................544
*WIPER, NO WIPE AFTER WASH ........................................546
*WIPER, NOT WORKING AT ALL .........................................547
*WIPER, NOT WORKING IN THE HIGH SPEED .............................552
*WIPER, RUNS ALL THE TIME WITH IGNITION ON..........................555
VERIFICATION TESTS
VERIFICATION TESTS..................................................557
8.0 COMPONENT LOCATIONS..............................................563
8.1 AIRBAG SYSTEM .................................................563
8.2 AUDIO ..........................................................564
8.2.1 ANTENNA MODULE.......................................564
8.2.2 AMPLIFIER (INFINITY 2) ...................................564
8.2.3 AMPLIFIER (INFINITY 1) ...................................564
8.3 COMMUNICATION ................................................565
8.4 ELECTRICALLY HEATED SYSTEMS .................................566
8.4.1 SWITCHES ..............................................566
8.4.2 HEATED SEAT MODULE ...................................566
8.5 HEATING AND A/C ................................................566
ix
Page 12
TABLE OF CONTENTS - Continued
8.5.1 ACTUATORS.............................................566
8.5.2 AUTOMATIC TEMPERATURE CONTROL HEAD ................567
8.5.3 MANUAL TEMPERATURE CONTROL HEAD ...................567
8.6 INSTRUMENT CLUSTER...........................................567
8.6.1 CHRYSLER (TYPICAL).....................................567
8.6.2 DECKLID AJAR SWITCH ...................................568
8.6.3 FUEL PUMP MODULE (HARNESS CONNECTOR)-C308 .........568
8.6.4 BRAKE FLUID LEVEL SWITCH..............................568
8.6.5 PARKING BRAKE SWITCH .................................569
8.6.6 WASHER FLUID LEVEL....................................569
8.7 INTERIOR LIGHTING ..............................................569
8.7.1 HEADLINER CONNECTOR .................................569
8.7.2 DOOR AJAR SWITCH .....................................570
8.8 MEMORY SYSTEM................................................570
8.8.1 MEMORY SWITCH ........................................570
8.8.2 MEMORY MODULE .......................................570
8.8.3 MEMORY SEAT MOTORS ..................................571
8.9 OVERHEAD TRAVEL INFORMATION SYSTEM.........................571
8.9.1 OTIS MODEL.............................................571
8.9.2 HEADLINER CONNECTOR (J/B C-11) ........................571
8.10 POWER DOOR LOCKS ............................................572
8.10.1 DOOR LOCK MOTOR .....................................572
8.10.2 RKE MODULE............................................572
8.11 SPEED PROPORTIONAL STEERING.................................573
8.11.1 SOLENOID ..............................................573
8.11.2 CONNECTOR ............................................573
8.12 VEHICLE THEFT SECURITY SYSTEM (VTSS) .........................573
8.13 WIPER SYSTEM..................................................574
8.13.1 WIPER MOTOR...........................................574
8.13.2 WASHER RESERVOIR.....................................574
9.0 CONNECTOR PINOUTS ................................................575
A/C COMPRESSOR CLUTCH ............................................575
A/C PRESSURE TRANSDUCER ..........................................575
AIRBAG CONTROL MODULE (ORC) ......................................575
AMBIENT TEMPERATURE SENSOR ......................................576
ANALOG CLOCK (LTD/300M) ............................................576
AUTOMATIC TEMPERATURE CONTROL HEAD .............................576
BLEND DOOR ACTUATOR ..............................................576
BLOWER MOTOR POWER MODULE (ATC) ................................577
BLOWER MOTOR RESISTOR BLOCK.....................................577
BODY CONTROL MODULE C1...........................................577
BODY CONTROL MODULE C2...........................................578
BODY CONTROL MODULE C3...........................................578
BODY CONTROL MODULE C4...........................................579
BRAKE FLUID LEVEL SWITCH...........................................579
C202 (MTC)...........................................................579
C202 (MTC)...........................................................580
C203 (ATC) ...........................................................580
C203 (ATC) ...........................................................580
C309.................................................................581
C309.................................................................581
x
Page 13
TABLE OF CONTENTS - Continued
C310.................................................................581
C310.................................................................581
CENTER INSTRUMENT PANEL SPEAKER .................................581
CLOCKSPRING C1.....................................................581
CLOCKSPRING C2.....................................................582
CLOCKSPRING C3.....................................................582
COMPACT DISC CHANGER (MIDLINE/PREMIUM)...........................582
CONTROLLER ANTILOCK BRAKE ........................................583
DATA LINK CONNECTOR ...............................................583
DECKLID RELEASE SOLENOID/AJAR SWITCH .............................584
DECKLID RELEASE SWITCH ............................................584
DRIVER AIRBAG SQUIB ................................................584
DRIVER CYLINDER LOCK SWITCH.......................................584
DRIVER DOOR LOCK MOTOR/AJAR SWITCH ..............................585
DRIVER HEATED SEAT BACK ...........................................585
DRIVER HEATED SEAT BACK (SEAT BACK SIDE) ..........................585
DRIVER HEATED SEAT CUSHION........................................585
DRIVER HEATED SEAT CUSHION (CUSHION SIDE).........................586
DRIVER HEATED SEAT SWITCH .........................................586
DRIVER POWER DOOR LOCK SWITCH ...................................586
DRIVER POWER MIRROR (MEMORY) ....................................586
DRIVER POWER SEAT FRONT RISER MOTOR.............................587
DRIVER POWER SEAT FRONT RISER MOTOR SENSOR (MEMORY) ..........587
DRIVER POWER SEAT HORIZONTAL MOTOR..............................587
DRIVER POWER SEAT HORIZONTAL MOTOR SENSOR (MEMORY) ...........587
DRIVER POWER SEAT REAR RISER MOTOR ..............................588
DRIVER POWER SEAT REAR RISER MOTOR SENSOR (MEMORY)............588
DRIVER POWER SEAT RECLINER MOTOR ................................588
DRIVER POWER SEAT RECLINER MOTOR SENSOR (MEMORY)..............588
DRIVER POWER SEAT SWITCH .........................................589
ENGINE OIL PRESSURE SWITCH ........................................589
EVAPORATOR TEMPERATURE SENSOR ..................................590
HEATED MIRROR FUSE ................................................590
IGNITION SWITCH .....................................................590
INSTRUMENT CLUSTER C1.............................................590
INSTRUMENT CLUSTER C2.............................................591
CIRCUIT BREAKERS ...................................................593
DOOR LOCK RELAY ...................................................593
DOOR UNLOCK RELAY.................................................593
DRIVER DOOR UNLOCK RELAY .........................................593
HORN RELAY .........................................................593
JUNCTION BLOCK BODY CONTROL MODULE-JB ..........................594
JUNCTION BLOCK C2 ..................................................594
JUNCTION BLOCK C3 ..................................................595
JUNCTION BLOCK C4 ..................................................595
JUNCTION BLOCK C6 ..................................................595
JUNCTION BLOCK C7 ..................................................596
JUNCTION BLOCK C9 ..................................................596
JUNCTION BLOCK C11 .................................................596
LEFT FRONT DOOR SAIL SPEAKER......................................596
LEFT FRONT DOOR SPEAKER ..........................................596
LEFT HORN ..........................................................597
LEFT REAR DOOR LOCK MOTOR/AJAR SWITCH...........................597
xi
Page 14
TABLE OF CONTENTS - Continued
LEFT REAR DOOR SPEAKER (PREMIUM) .................................597
LEFT REAR SHELF SPEAKER ...........................................597
LEFT REMOTE RADIO SWITCH..........................................598
LEFT SEAT AIRBAG SQUIB..............................................598
LEFT SIDE IMPACTAIRBAG CONTROL MODULE ...........................598
MANUAL TEMPERATURE CONTROL HEAD C1 .............................598
MANUAL TEMPERATURE CONTROL HEAD C2 .............................599
MEMORY HEATED SEAT/MIRROR MODULE C1 ............................599
MEMORY HEATED SEAT/MIRROR MODULE C2 ............................600
MEMORY HEATED SEAT/MIRROR MODULE C3 ............................600
MEMORY HEATED SEAT/MIRROR MODULE C4 ............................600
MEMORY SET SWITCH.................................................600
MODE DOOR ACTUATOR...............................................601
OVERHEAD TRAVEL INFORMATION SYSTEM (PREMIUM) ...................601
PASSENGER AIRBAG SQUIB ............................................601
PASSENGER DOOR LOCK MOTOR/AJAR SWITCH..........................601
PASSENGER HEATED SEAT BACK .......................................602
PASSENGER HEATED SEAT BACK (SEAT BACK SIDE) ......................602
PASSENGER HEATED SEAT CUSHION ...................................602
PASSENGER HEATED SEAT CUSHION (CUSHION SIDE) ....................602
PASSENGER HEATED SEAT SWITCH.....................................603
PASSENGER POWER DOOR LOCK SWITCH...............................603
PASSENGER POWER MIRROR (MEMORY) ................................603
POWER AMPLIFIER C1 .................................................603
POWER AMPLIFIER C2 .................................................604
A/C COMPRESSOR CLUTCH RELAY......................................606
POWERTRAIN CONTROL MODULE C1....................................606
POWERTRAIN CONTROL MODULE C2....................................607
POWERTRAIN CONTROL MODULE C3....................................608
POWERTRAIN CONTROL MODULE C4....................................609
RADIO C1 (EXCEPT BASE)..............................................610
RADIO C2 (CD CHANGER) ..............................................610
RADIO C2 (SATELLITE RADIO) (PREMIUM) ................................610
REAR WINDOW DEFOGGER RELAY......................................611
REAR WINDOW DEFOGGER/ANTENNA MODULE...........................611
RECIRCULATION DOOR ACTUATOR......................................611
RIGHT FRONT DOOR SAIL SPEAKER.....................................611
RIGHT FRONT DOOR SPEAKER .........................................611
RIGHT HORN .........................................................612
RIGHT REAR DOOR LOCK MOTOR/AJAR SWITCH .........................612
RIGHT REAR DOOR SPEAKER ..........................................612
RIGHT REAR SHELF SPEAKER..........................................612
RIGHT REMOTE RADIO SWITCH.........................................612
RIGHT SEAT AIRBAG SQUIB ............................................613
RIGHT SIDE IMPACTAIRBAG CONTROL MODULE - YELLOW 6 WAY ..........613
SATELLITE RADIO MULTIPLEXER C1 (PREMIUM) ..........................613
SATELLITE RADIO MULTIPLEXER C2 (PREMIUM) ..........................614
SATELLITE RECEIVER MODULE C1 (PREMIUM)............................614
SEAT BELT SWITCH ...................................................614
SENTRY KEY IMMOBILIZER MODULE ....................................614
SUN SENSOR/VTSS LED ...............................................615
TRUNK KNOCK OUT SWITCH ...........................................615
WASHER FLUID LEVEL SENSOR ........................................615
xii
Page 15
TABLE OF CONTENTS - Continued
10.0 SCHEMATIC DIAGRAMS................................................617
10.1 AIRBAG SYSTEMS................................................617
10.2 AUDIO SYSTEM - MIDLINE.........................................618
10.3 AUDIO SYSTEM - PREMIUM INFINITY I ..............................619
10.3 AUDIO SYSTEM - PREMIUM 2 INFINITY II ............................620
10.3.1 CD CHANGER............................................621
10.3.2 REMOTE RADIO SWITCHES ...............................621
10.4 CHIME WARNING SYSTEM ........................................622
10.5 CLIMATE CONTROL - AUTOMATIC TEMPERATURE CONTROL ..........623
10.5 CLIMATE CONTROL - MANUAL TEMPERATURE CONTROL .............624
10.6 COMMUNICATIONS...............................................625
10.6.1 PCM COMMUNICATION....................................626
10.7 DOOR AJAR .....................................................626
10.8 EXTERIOR LIGHTING ...........................................627
10.9 INSTRUMENT CLUSTER .........................................628
10.10 INTERIOR LIGHTING ............................................629
10.11 MEMORY SYSTEM................................................630
10.12 OTIS............................................................631
10.13 POWER DOOR LOCKS/RKE........................................632
10.13.1 DOOR LOCKS............................................632
10.13.2 DECKLID RELEASE .......................................633
10.14 SENTRY KEY IMMOBILIZER........................................633
10.15 SPEED PROPORTIONAL STEERING.................................634
10.16 VEHICLE THEFT SECURITY SYSTEM................................634
10.17 WIPER SYSTEM..................................................635
xiii
Page 16
NOTES
xiv
Page 17
GENERAL INFORMATION
1.0 INTRODUCTION
The procedures contained in this manual include
all the specifications, instructions and graphics
needed to diagnose 2003 LH body system prob-
lems. 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 module; i.e., if the DRBIIIt
shows a “no response” or “Bus +/- Signal 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.
An * placed before the symptom description indi-
cates a customer complaint.
When repairs are required, refer to the appropri-
ate service manual for the proper removal and
installation procedure.
Diagnostic procedures change every year. New
diagnostic systems may be added: carry over 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 the book and mail it back to
us.
1.1 SYSTEM COVERAGE
This diagnostic procedures manual covers all
2003 Chrysler Concorde, Dodge Intrepid, Chrysler
LHS and 300M models.
• symptom analysis
• problem isolation
• repair of isolated problem
• verification of proper operation
1.3 FUSES AND LIGHT BULBS
When replacing a blown fuse, it is important to
use only a fuse having the correct amperage rating.
The use of a fuse with a rating other than indicated
may result in a dangerous electrical system overload. If a properly rated fuse continues to blow, it
indicates a problem in the circuit that must be
corrected.
When replacing HALOGEN bulbs, do not touch
the new bulb with your fingers. Oil contamination
will severely shorten bulb life. If the bulb comes in
contact with an oily surface, clean the bulb with
rubbing alcohol.
2.0 IDENTIFICATION OF
SYSTEM
The vehicle systems that are part of the “body”
system are:
• Airbag System
• Audio
• Chimes
• Climate Control Systems (Automatic and Man-
ual)
• Door Ajar
• Electrically Heated Systems
• Exterior Lighting
• Instrument Cluster
• Interior Lighting
• Memory System
• Overhead Console
• Power Door Locks
• Remote Keyless Entry
• Speed Proportional Steering
• Vehicle Communications
• Vehicle Theft Security System
• Wiper/Washer
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
3.0 SYSTEM DESCRIPTION AND
FUNCTIONAL OPERATION
The body system on the 2003 LH consists of a
combination of modules that communicate over the
PCI bus (Programmable Communication Interface
multiplex system). Through the PCI bus, informa-
1
Page 18
GENERAL INFORMATION
tion about the operation of vehicle components and
circuits is relayed quickly to the appropriate module(s).Allmodulesreceive all the information transmitted on the bus even though a module may not
require all information to perform it’s function. It
will only respond to messages “addressed” to it
through a binary coding process. This method of
data transmission significantly reduces the complexity of the wiring in the vehicle and the size of
wiring harnesses. All of the information about the
functioning of all the systems is organized, controlled, and communicated by the PCI bus, which is
described in the Vehicle Communication section of
this general information.
Always begin by reading the diagnostic trouble
codes using the DRB. Next, look for the symptom in
the Diagnostic Information and Procedures section
of the Table Of Content located in the front of the
book. This will direct you to the specific test(s) that
must be performed.
Important Note:
If the Powertrain Control Module has been
changed and the correct VIN and mileage have not
been programmed, a DTC will be set in the Airbag
module. In addition, if the vehicle is equipped with
a Sentry Key Immobilizer Module (SKIM), Secret
Key data must be updated to enable starting. Refer
to the 2003 LH Powertrain Diagnostic Manual for
more information. Erase codes in all modules.
3.1 AIRBAG SYSTEM
TheAirbag System is equipped with a new type of
Airbag Control Module (ACM) called an Occupant
Restraint Controller (ORC). The ACM is secured to
a bracket on the floor panel transmission tunnel
below the instrument panel inside the vehicle. The
ACM mounting bracket also serves as the instrument panel center support. The ACM contains a
microprocessor, the impact sensor, and energy storage capacitors. The microprocessor contains the
airbag system logic. The airbag system logic includes On-Board Diagnostics ACM capability, and
communicates with the instrument cluster circuitry
on the Programmable Communication Interface
(PCI) data bus to control the airbag indicator lamp.
The microprocessor in the ACM monitors the impact sensor signal and the airbag system electrical
circuits to determine the system readiness. If the
ACM detects a monitored system fault, it sends
messages to the Mechanical Instrument Cluster
(MIC) over the PCI data bus to turn on the airbag
warning lamp. A pre-programmed decision algorithm in the ACM microprocessor determines when
the deceleration rate is severe enough to require
airbag system protection. When the programmed
conditions are met, the ACM sends an electrical
signal to deploy the airbag system components. The
impact sensor is an accelerometer that senses the
rate of vehicle deceleration, which provides verification of the direction and severity of an impact.
The impact sensor is calibrated for the specific
vehicle, and is only serviced as a unit with theACM.
TheACM also contains an energy-storage capacitor.
This capacitor stores enough electrical energy to
deploy the airbags, for two minutes following a
battery disconnect or failure during an impact. The
purpose of the capacitor is to provide airbag system
protection in severe secondary impact if the initial
impact has damaged or disconnected the battery,
but not severe enough to deploy the airbags. The
ACM cannot be repaired or adjusted and, if damaged or faulty, it must be replaced
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 RESULTIN 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
OCCUPANT RESTRAINT CONTROLLER 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 lamp on for 6-8 seconds. If the lamp
remains off, it means that theACM 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 ACM system or the MIC lamp
circuit may be internally shorted to ground.
3.1.1 DRIVER AIRBAG (DAB)
The airbag protective trim cover is the most
visible part of the driver side airbag system. The
airbag is mounted directly to the steering wheel.
2
Page 19
GENERAL INFORMATION
Located under the trim cover are the horn switch,
the airbag cushion, and the airbag cushion supporting components. The airbag includes a housing to
which the cushion and inflator are attached and
sealed. The airbag cannot be repaired, and must be
replaced if deployed or in any way damaged. The
inflator assembly is mounted to the back of the
airbag module. The inflator seals the hole in the
airbag cushion so it can discharge the gas it produces directly into the cushion when supplied with
the proper electrical signal. The protective trim
cover is fitted to the front of the airbag module and
forms a decorative cover in the center of the steering wheel. Upon airbag deployment, this cover will
split at a predetermined breakout line.
THE AIRBAG MODULE INFLATORASSEMBLY CONTAINS SODIUM AZIDE AND POTASSIUM NITRATE. THESE MATERIALS ARE
POISONOUS AND EXTREMELY FLAMMABLE. CONTACT WITH ACID, WATER, OR
HEAVY METALS MAY PRODUCE HARMFUL
AND IRRITATING GASES (SODIUM HYDROXIDE IS FORMED IN THE PRESENCE
OF MOISTURE) OR COMBUSTIBLE COMPOUNDS. DO NOT PUNCTURE, INCINERATE,ORBRING INTO CONTACT WITH ELECTRICITY. DO NOT STORE AT
TEMPERATURE EXCEEDING 93°C (200° F).
3.1.2 CLOCKSPRING
The clockspring is mounted on the steering column behind the steering wheel. This assembly
consists of a plastic housing which contains a flat,
ribbon-like, electrically conductive tape that winds
and unwinds with the steering wheel rotation. The
clockspring is used to maintain a continuous electrical circuit between the instrument panel wire
harness and the driver side airbag module, the horn
switch, and the vehicle speed control switches on
vehicles that are so equipped. The clockspring must
be properly centered when it is installed on the
steering column following any service removal, or it
will be damaged. The clockspring cannot be repaired it must be replaced.
3.1.3 PASSENGER AIRBAG (PAB)
The airbag door in the instrument panel top cover
above the glove box is the most visible part of the
passenger side airbag system. Located under the
airbag door is the airbag cushion and it’s supporting
components. The airbag includes a housing to
which the cushion and inflator are attached and
sealed. The airbag cannot be repaired, and must be
replaced if deployed or in any way damaged. The
inflator assembly is mounted to the back of the
airbag module. The inflator includes a small canister of highly compressed argon gas. The inflator
seals the hole in the airbag cushion so it can
discharge the compressed gas it contains directly
into the cushion when supplied with the proper
electrical signal. The airbag door has a living hinge
at the top, which is secured to the instrument panel
top cover. The door also has predetermined breakout lines concealed beneath its decorative cover.
Upon airbag deployment, the airbag door will split
at the breakout lines and the door will pivot out of
the way.
WARNING: THE PASSENGER AIRBAG
MODULE CONTAINS ARGON GAS
PRESSURIZED TO OVER 2500 PSI. DO NOT
ATTEMPT TO DISMANTLE AN AIRBAG
MODULE OR TAMPER WITH ITS INFLATOR.
DO NOT PUNCTURE, INCINERATE, OR
BRING INTO CONTACT WITH ELECTRICITY.
DO NOT STORE AT TEMPERATURE
EXCEEDING 93°C (200°F). REPLACE AIRBAG
SYSTEM COMPONENTS ONLY WITH PARTS
SPECIFIED IN THE CHRYSLER MOPAR
PARTS CATALOG. SUBSTITUTE PARTS MAY
APPEAR INTERCHANGEABLE, BUT
INTERNAL DIFFERENCES MAY RESULT IN
INFERIOR OCCUPANT PROTECTION. THE
FASTENERS, SCREWS, AND BOLTS
ORIGINALLY USED FOR THE AIRBAG
SYSTEM COMPONENTS HAVE SPECIAL
COATINGS AND ARE SPECIFICALLY
DESIGNED FOR THE AIRBAG SYSTEM. THEY
MUST NEVER BE REPLACED WITH ANY
SUBSTITUTES. ANY TIME A NEW FASTENER
IS NEEDED, REPLACE IT WITH THE
CORRECT FASTENERS PROVIDED IN THE
SERVICE PACKAGE OR SPECIFIED IN THE
CHRYSLER MOPAR PARTS CATALOG.
3.1.4 SIDE IMPACT AIRBAG CONTROL
MODULES (SIACM)
The 2003 LH uses two identical side impact
airbag control modules (SIACM) that share the
same part number. They are located on the left and
right B-post with the connector pointed forward.
For proper PCI bus operation each SIACM must
have a unique module identification. To provide the
unique module identification the SIACM software
looks for a ground on cavity # 5. If cavity#5is
grounded the SIACM communicates as a left
SIACM otherwise it communicates as a right
SIACM. The SIACM perform self diagnostics and
circuit tests to determine if the system is functioning properly. If the test find a problem the SIACM
will set both active and stored diagnostic trouble
codes. If a DTC is active the SIACM will request
3
Page 20
GENERAL INFORMATION
that the airbag warning lamp be turned on. The
results of the system test are transmitted on the
PCI Bus to the ACM once each second or on change
in lamp state. If the warning lamp status message
from either SIACM contains a lamp on request the
ACM will set an active DTC. At the same time as the
DTC is set the ACM sends a PCI Bus message to the
mechanical instrument cluster (MIC) requesting
the airbag warning lamp be turned on. Observe all
ACM warning and caution statements when servicing or handling the SIACM. SIACM are not repairable and must be replaced if they are dropped.
3.1.5 SEAT AIRBAG
The Left and Right seat airbags are located in the
outboard end of the front seat backs. The airbag
contains a bag, an inflator (a small canister of
highly compressed argon gas) and a mounting
bracket. The seat airbag 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.
Note: It will be necessary to remove the seat
back trim to gain access to the seat airbag
module connector when diagnosing the seat
airbag system.
THE SEAT AIRBAG MODULE CONTAINS
ARGON GAS PRESSURIZED TO OVER 2500
PSI. DO NOT ATTEMPT TO DISMANTLE AN
AIRBAG MODULE OR TAMPER WITH ITS
INFLATOR. DO NOT PUNCTURE, INCINERATE,ORBRING INTO CONTACT WITH ELECTRICITY. DO NOT STORE AT TEMPERATURE EXCEEDING 93°C (200°F). REPLACE
AIRBAG SYSTEM COMPONENTS ONLY
WITH PARTSSPECIFIED IN THE CHRYSLER
MOPAR PARTS CATALOG. SUBSTITUTE
PARTS MAY APPEAR INTERCHANGEABLE,
BUT INTERNAL DIFFERENCES MAY RESULT IN INFERIOR OCCUPANT PROTECTION. THE FASTENERS, SCREWS, AND
BOLTS ORIGINALLY USED FOR THE AIRBAG SYSTEM COMPONENTS HAVE SPECIAL COATINGS AND ARE SPECIFICALLY
DESIGNED FOR THE AIRBAG SYSTEM.
THEY MUST NEVER BE REPLACED WITH
ANY SUBSTITUTES. ANY TIME A NEW FASTENER IS NEEDED, REPLACE IT WITH THE
CORRECT FASTENERS PROVIDED IN THE
SERVICE PACKAGE OR SPECIFIED IN THE
CHRYSLER MOPAR PARTS CATALOG.
3.1.6 SPECIAL TOOLS
Some airbag diagnostic test use special tools,
8310 and 8443 airbag load tool, for testing squib
circuits. The load tools contain fixed resistive loads,
jumpers and adapters. The fixed loads are connected to cables and mounted in a storage case. The
cables can be directly connected to some airbag
system connectors. Jumpers are used to convert the
load tool cable connectors to the other airbag system connectors. The adapters are connected to the
module harness connector to open shorting clips
and protect the connector terminal during testing.
When using the load tool follow all of the safety
procedures in the service information for disconnecting airbag system components. Inspect the wiring, connector and terminals for damage or misalignment. Substitute the airbag load tool in place
of a Driver or Passenger Airbag, seat airbag, clockspring, or seat belt tensioner (use a jumper if
needed). Then follow all of the safety procedures in
the service information for connecting airbag system components. Read the module active DTC’s. If
the module reports NOACTIVE DTC’s the defective
component has been removed from the system and
should be replaced. If the DTC is still active, continue this process until all component in the circuit
have been tested. Then disconnect the module connector and connect the matching adapter to the
module connector. With all airbags disconnected
and the adapter installed the squib wiring can be
tested for open or shorted conditions.
3.1.7 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.
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.
3.1.7.1 ACTIVE CODES
The code becomes active as soon as the malfunction is detected or key-off, whichever occurs first.
An active trouble code indicates an on-going malfunction. This means that the malfunction is currently there every time the airbag control module
checks that circuit/function. It is impossible to erase
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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.
An ‘‘Interrogate Right SIACM or Interrogate Left
SIACM’’ diagnostic trouble code indicates an active
trouble code in the respective module.
3.1.7.2 STORED CODES
Airbag codes are automatically stored in the
ACM’s memory as soon as the malfunction is detected.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 active code could be.
When a trouble code occurs, the airbag warning
lamp illuminates for 12 seconds minimum (even if
the problem existed for less than 12 seconds). The
code is stored, along with the time in minutes it was
active, and the number of times the ignition has
been cycled since the problem was last detected.
The minimum time shown for any code will be one
minute, even if the code was actually present for
less than one minute. Thus, the time shown for a
code that was present for two minutes 13 seconds,
for example, would be three minutes.
If a malfunction is detected a diagnostic trouble
code is stored and will remain stored as long as the
malfunction exists. When and if the malfunction
ceases to exist, an ignition cycle count will be
initiated for that code. If the ignition cycle count
reaches 100 without a reoccurrence of the same
malfunction, the diagnostic trouble code is erased
and that ignition cycle counter is reset to zero. If the
malfunction reoccurs before the count reaches 100,
then the ignition cycle counter will be reset and the
diagnostic trouble code will continue to be a stored
code.
Maintain a safe distance from all airbags while
performing the following inspection. 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
There are radio systems available that communicate on the PCI bus. They use the bus for three
reasons. First is to communicate trouble codes,
second is to control the remote radio switches located on the back of the steering wheel, and third is
for use with the driver memory selection system.
The radio stores two sets of station presets and can
be recalled by pressing the optional memory select
button (located on the drivers door). The midline
will have 6 speakers and a 120 watt external
amplifier. The Infinity I will have 7 speakers and a
240 watt external amplifier or with a indash 4-disk
CD Player. The Infinity II will have 9 speakers and
a 360 watt external amplifier with a indash 4-disk
CD Player.
When troubleshooting output shorts or ‘‘output’’
error messages, the following applies:
On radios with out an external amplifier, the
term output refers to the path between the radio
and the speaker. This type of circuit can be monitored all the way through the speaker connections
by the radio assembly. When the radio displays a
shorted output DTC with this type of system, the
speaker, radio, or wiring could be at fault.
On radios with an external amplifier, the term
‘‘output’’ refers to the circuit between the radio
connector and the amplifier. The radio is capable of
monitoring only this portion and can tell nothing
about the circuit between the amplifier and the
speakers. Consequently, a shorted output DTC on
this type of system would only refer to this circuit.
A faulty speaker could not cause this DTC.
These radios can be controlled via remote radio
switches (optional). These switches are located on
the back side of the steering wheel. They control
volume, preset bank selection, seek and scan functions.
These functions are inputs to the body controller
and can be read with the DRBIIIt under ‘‘body’’
systems, sensor displays. The switches are a multiplexed signal to the BCM. The remote radio control
circuit is a five 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 body controller and it sends a specific message
to the radio on the PCI bus line. The radio then
responds 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 throught this device
must be verified.
The new in-dash CD-changer is designed to fit
into the existing cubby bin in the center stack. This
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GENERAL INFORMATION
new cartridge-less CD-changer is controlled by your
radio, and allows you to individually load up to four
discs at one 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 (the
Programmable Communication Interface or PCI
bus). This network consists of the powertrain control module (PCM), the memory heat seat/mirror
module (MHSMM), sentry key immobilizer module
(SKIM), the electro/mechanical instrument cluster
(MIC), the optional overhead travel information
system (OTIS), airbag control module (ORC), optional antilock brakes (ABS), the radio and remote
CD-player, optional left and rightside impact airbag
control modules (SIACM), and the optional automatic temperature control (ATC) head. The (BCM)
is operational when battery power is supplied to the
module, ignition switch power is needed for ignition
switched functions.
The body control module provides the following
features:
Automatic headlamp and fog lamp
A/C switch status/evaporator temperature status
BCM diagnostic support
Central lock and unlock (VTSS only)
Chime
Climate Control (Automatic and Manual) system
support
Door ajar switch status
Door Lock Inhibit (key in ignition or headlamps/
park lamps on)
Electronic Odometer Support
Fog Lamp Control
Headlamp multiplexing control
Headlamp, Park & tail lamps with battery save
feature
Headlamp Time Delay
Illuminated Entry with “fade to off”
Interior lighting with battery save feature
Mechanical Instrument Cluster (fuel level, dim
data, odometer & warning chime) support
Memory system (LHS and 300M)
Overhead travel information system
Power door lock multiplexing control
Rear Window Defogger Control
Remote Keyless Entry with Panic Mode
Remote power deck lid release
Remote radio control
Rolling door lock control (customer programmable)
Sentry key immobilizer
Speed proportional steering
Vehicle Theft Security System
Wiper Control (speed sensitive with return to
park)
The BCM receives information over the PCI Bus
from the PCM in order to support certain features.
The required information is as follows:
• Engine RPM
• Engine Temperature
• Injector on Time and Distance Pulses
• Vehicle Speed
• Charging System Failure, Engine Temperature
Limp-In, VTSS Arming Status
• Engine Model
• “Check Engine” lamp status
The BCM provides the PCM with information on
the A/C switch status and the VTSS status.
The LH has several customer programmable features which can be disabled or enabled by the
customer.
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FEATURE DEFAULT PROGRAMMING METHOD FEEDBACK
Rolling Door
Locks
RKE-Horn
Chirp
RKE-Rear
Release Toggle
Enabled Close all doors
Place vehicle key in the ignition and cycle
between off and run four times ending in
the off position
Customer depresses the driver power door
lock switch to lock the doors
Body Controller will toggle the enable/
disable state of rolling locks
Enabled Continually press the lock button for a
minimum of 4 seconds to a maximum of
10 seconds
Within the 4-10 second range, press the
unlock button while continuing to press
the lock button
Release both buttons
Body Controller will toggle on/off state of
horn chirp feature
Press Twice Continually press the unlock button for a
minimum of 4 seconds to a maximum of
10 seconds
BCM provides a single
chime to indicate completion of the programming
None
RKE Program New
FOB (Using
an already
programmed
FOB)
Not Applicable
Within the 4-10 second range, press the
rear release button while continuing to
press the unlock buttons
Release both buttons
RKE will toggle state of one press/two
press rear release
Turn vehicle ignition switch on. With pro-
grammed FOB continually press the unlock button for a minimum of 4 seconds to
a maximum of 10 seconds
Within the 4-10 second range, press the
panic button while continuing to press the
unlock button
Release both buttons
Press any button of FOB(s) to be Learned.
(Note: RKE system erases all FOBs when
program mode is entered So any existing
FOBs must also be Programmed.
BCM will sound a second
chime when programming
mode is started
BCM will sound a second
chime after each FOB has
been learned, a 32 second
time out period has
elapsed, or the vehicle ignition has been turned off
Turn off ignition or wait for
32 seconds to exit seconds
to exit programming mode
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GENERAL INFORMATION
3.4 CHIME SYSTEM
The chime system is comprised of an audible
chime located internal to the BCM; and is dependent on various inputs to the BCM to operate. These
inputs include key-in ignition switch, exterior
lamps, seat belt switch, and requests from the MIC
to chime when some indicators are turned on.
3.5 DOOR AJAR SYSTEM
The door ajar state is used as an input for various
control modules on the vehicle. The DRBIIIt will
display the state of the door ajar switches in Inputs/
Outputs. It’s important to note, that when a door is
closed, the switch state on the DRBIIIt will show
OPEN, and when the door is open, the switch state
will show CLOSED. During diagnosis, if a door is
closed and the DRBIIIt displays the switch state as
CLOSED, it indicates a shorted door ajar circuit. If
the door is open and the DRBIIIt displays the
switch state as OPEN, it indicates an open door ajar
circuit.
3.6 CLIMATE CONTROL SYSTEMS
3.6.1 AUTOMATIC TEMPERATURE
CONTROL (ATC)
The body control module (BCM) provides automatic temperature control support both through
PCI bus communications and through processing
inputs to determine control for actuators and the
blower motor. The BCM interfaces with the ATC
control head over the PCI bus. Information on
button activation, blower setting, and temperature
setting are supplied to the BCM. In turn, the BCM
supplies the ATC control head with mode information and indication lamp status. The BCM controls
blower motor speed by providing a varying duty
cycle of a fixed frequency output (pulse width modulation). There are 14 distinct blower speeds, plus a
blower off signal. The body control module also
controls the HVAC mode, temperature (blend air),
and recirculation doors. This system is either fully
automatic or fully manual control (no semiautomatic functions); however, the temperature
blend door control is always automatically controlled based on sensor reading and comfort setting.
The in-car sensor and the aspirator motor are now
housed in the ATC control head.
3.6.2 MANUAL TEMPERATURE CONTROL
The body control module interfaces with the a/cheater control head via hardwired circuits. Information for the temperature setting is supplied to
the body control module via a potentiometer. The
rear defogger switch, A/C switch and the mode
setting is supplied via a resistive multiplexed circuit. The system on/off status is supplied by a
dedicated circuit. The BCM drives the A/C and rear
defogger indicator lamps via hardwire to the A/Cheater control head.
3.6.3 HVAC BLEND, MODE, AND
RECIRCULATION DOOR OPERATION
The trouble codes that indicate a stall failure or a
feedback signal failure work together to show what
is wrong with the HVAC system. The stall trouble
codes mean that the body control module cannot
force an actuator to the end of the HVAC unit door.
Internal problems in the body control module will
set other short-related codes. Having only stall
trouble codes indicates that there is a problem with
an open or short circuit in the wiring, a bad actuator, a bad HVAC unit door or connecting linkage. It
is important that the operation of the HVACdoor be
checked if an actuator is removed. This can be
checked by rotating each unit door shaft to confirm
that the door will stop at both ends of travel. The
actuator itself has no stops. It must have the HVAC
unit door to stop travel to pass a stall test.
A feedback signal failure can occur on the blend
or mode door.The body control module monitors the
feedback signal to check the position of the actuator.
The body control module not only checks the level of
the signal but also how much the voltage changes.
A feedback failure can occur if there is a short or
open circuit in the wiring, a bad actuator, a bad
body control module, a bad HVAC unit door or
connecting linkage. The easiest way to diagnose
this is to use the DRB to actuate the blend or mode
door. Note that the feedback voltage of the actuator
should smoothly change as the actuator is moved. A
sudden change in the feedback voltage to a 5.0-volt
or a 0.0-volt level indicates the actuator is bad. A
fixed feedback voltage that is less than 5.0 volts or
greater than 0.0 volts without a stall failure, or a
short failure indicates that the actuator, the HVAC
unit door, or a connecting mechanical linkage is
jammed thereby preventing movement. A feedback
signal voltage that stays on 5.0 volts or 0.0 volts
indicates a wiring or body control module problem.
The feedback voltage should always be less than 5.0
volts and greater than 0.0 volts.
The feedback trouble code can also occur from
lack of actuator travel. This can be checked by
confirming that the feedback signal smoothly
changes when the actuator is moved with the DRB.
If the signal is OK, the door travel is not correct.
The actuator must be removed and the HVAC unit
door mechanically checked for proper operation.
Typical problems that prevent door movement in-
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GENERAL INFORMATION
clude screws dropped in the HVAC unit or warped
doors. Replace any part that is found defective.
3.6.4 REAR WINDOW DEFOGGER
When the BCM receives a rear defogger request
from the climate control head (either ATC or manual) the BCM will activate the rear window defogger relay for 15 minutes. If the BCM receives
another rear defogger request while the relay is still
activated, the relay will be de-activated. If the relay
is allowed to time out (full 15 minutes), further
requests during the same ignition on period will
cause the BCM to activate the relay for 7.5 minutes
3.7 EXTERIOR LIGHTING SYSTEM
3.7.1 EXTERIOR LIGHTING BATTERY
SAVER
The BCM monitors the status of and controls the
park lamp, head lamp and fog lamp relay’s. If any
exterior lamps are left on after the ignition is
turned off, the BCM will turn them off after 10
minutes.
3.7.2 HEADLAMP DELAY
The headlamp time delay operates when the
ignition switch is turned off while the headlamps
are still on, and the headlamps are then turned off
within 45 seconds after the ignition is off. This will
provide a 90-second time delay before turning off
the headlamps.
3.7.3 HEADLAMP SWITCH
The headlight switch on LH vehicles use a multiplexed (MUX) circuit to the BCM. The BCM will
then control the park lamp, head lamp and fog lamp
relay’s based on this input.
3.7.4 FOG LAMP CONTROL
The body control module controls the operation of
the fog lamp relay which controls the fog lamps. The
fog lamps can only be on if the park or low beam
headlamps are on. If the high beams are turned on,
the fog lamps will automatically be turned off.
3.7.5 AUTO HEADLAMPS
The headlamps and park/tail lamps will be activated by the BCM when the headlamp switch is in
the auto mode. To activate the auto headlamps the
BCM requires that: (1) the headlamp switch is in
the ‘A’position, (2) the engine is running, and (3) the
light level sensed through the sun load sensor falls
below the calibrated level.
3.8 INTERIOR LIGHTING
3.8.1 COURTESY LAMP CONTROL
The body controller has direct control over the
majority of the vehicle’s courtesy lamps. The body
computer will illuminate the courtesy lamps under
any of the following conditions:
1) Any door is ajar.
2) The courtesy lamp switch on the instrument
panel is closed.
3) A Remote Keyless entry unlock message is
received. If the interior lamps are left on after
the ignition is turned off, the BCM will turn
them off after 1 hour or until either the dome
lamp switch or door ajar switch changes state.
3.8.2 ILLUMINATED ENTRY
Illuminated entry will be initiated when the customer enters the vehicle by unlocking the doors
with the key fob, or with the key if the vehicle is
equipped with vehicle theft alarm. Upon exiting the
vehicle, if the lock button is pressed with a door
open, illuminated entry will cancel when the door
closes. If the doors are closed and the ignition
switch is turned on, the illuminated entry also
cancels.
3.9 MECHANICAL INSTRUMENT CLUSTER
The instrument cluster displays four gauges, a
vacuum fluorescent (VF) odometer, a VF PRNDL
and up to (18) indicators. One reset button is used
to switch the display from trip to total. Holding the
button when the display is in the trip mode will
reset the trip mileage. The cluster also supplies the
power for the panel illumination. Most of the information that is displayed is received over the PCI
bus from several modules.
With ignition in “lock”, the cluster will wake up
and display the door ajar and odometer display
when a door is opened. The cluster will also wake up
to control the panel illumination. In “off” (unlock)
the PRNDL and several indicators will be functional but all gauges will not function. On transition
from “off” (unlock) to run, the cluster will perform a
check of all micro-controlled indicators, the odometer and the PRNDL for approx. 2 seconds. Other
bulb checks with longer bulb check duration will be
performed based on bus messages from other modules. If the cluster receives no PCI bus messages for
(20) seconds after the transition to “run”, the cluster
will display “no bus” in the odometer.
A self test can be initiated by holding down the
odometer reset button and switching the ignition
from “lock” to “off” (unlock). This test will activate
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GENERAL INFORMATION
the gauges, turn on the indicator lights along with
the odometer and PRNDL segments.
3.10 MEMORY SYSTEM
The memory system consists of power left front
seat, power mirror(s) and radio presets. The memory heated seat/mirror module (MHSMM) also includes the heated seat function. The module is
located under the left front seat and receives input
from: left manual 8-way seat switch, left seat position sensors, memory switch, both heated seat
switches, both heated seat negative temperature
coefficients (NTC’s) thermistors), PCI bus circuits,
and the power mirror sensors. The module uses
these inputs to perform the following functions:
position the drivers memory seat, exterior mirror(s), actuate the drivers and passenger heated
seat heater and send the memory location over the
PCI bus.
When a memory button is pressed (either#1or#
2) on the memory switch the MHSMM sends a
message to the BCM which in turn sends a recall
message to the MHSMM and the PCI radio. They
will in turn position the drivers seat and sideview
mirror(s) along with setting the radio presets. If the
drivers seat or exterior mirror(s) are inoperative
from their own respected 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.
3.10.1 POWER SEAT
The memory power seat provides the driver with
2 position settings for the left seat. Each power seat
motor is connected to the MHSMM with two circuits. Each circuit is switched between battery and
ground. By alternating the circuits the MHSMM
controls the movement of the motors based on input
from the power seat switch or through memory
recall.
Each motor contains a potentiometer to monitor
the seat position. To monitor the position of the
motor, the MHSMM sends out a 5-volt reference on
the sensor supply circuit. The sensor is grounded
back to the module on a common ground circuit.
Based on the position of the sensor, the MHSMM
monitors the voltage change through the sensor on
a separate signal circuit.
The MHSMM stores the input value of each of the
four seat potentiometers in memory when the system is requested. The driver can initiate memory
recall, using either the seat mounted memory
switch or the RKE transmitter. When initiated, the
MHSMM adjusts the four seat motors to match the
memorized seat position data.
For safety, the memory seat recall is disabled by
the MHSMM when the vehicle is out of park position. Any obstruction to seat movement over a 2
second delay will cause the seat to stop moving in
which case a stalled motor would be detected by the
MHSMM which would then flag a trouble code and
the corresponding seat output would be deactivated. However, if the object obstructing the seat is
removed, the seat will function normally again.
3.10.2 MEMORY SEAT GLIDE
The intent of this feature is to allow for easier
entry and exit to the vehicle by moving the seat
rearward a short distance when the operator turns
the ignition off. The seat returns to its original
position when the operator returns and turns on the
ignition or extends the seat belt. If any seat movement is initiated, whether manual or by memory
recall, after the ignition has been turned off, that
will cancel any ensuing glide to enter movement
until the next ignition cycle.
This feature can be enabled/disabled by the
owner by holding the memory set button and simultaneously pressing the horizontal rearward switch.
To reinstate the feature, repeat the process. This
can also be done using the DRB which will also
inform as to which state it is in.
3.10.3 GUARD BANDS
The module provides guard bands which prevent
the seat track from hitting the hard limits of the
given seat axis during manual power seat operation. The guard band values for each hard limit are
stored in EEPROM. The guard band can be bypassed by running the seat to the end of its travel
and then releasing the switch and pressing it again.
The seat will move a short distance further. Once
the seat is past the guard band it can be stored in
memory, but if recall is initiated the seat will move
to the guard bands and no further.
3.10.4 MEMORY MIRROR
NOTE: Some vehicles may only be equipped
with a driver side memory mirror.
If equipped each outside mirror will have a vertical and a horizontal position sensor.The MHSMM
provides a 5-volt reference to each position sensor.
The sensors share a common ground circuit. The
MHSMM monitors the position of the mirror(s) by
measuring the voltage of each signal. When a memory position is set, the MHSMM monitors and
stores the position of the outside mirror. The
MHSMM adjusts the mirror(s) to the appropriate
positions when a memory recall message is received
from the RKE or is requested from the memory
switch.
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The power mirror switch during non-memory
operation operates the mirror(s) independently of
the MHSMM.
3.10.5 HEATED SEATS
The controls for the heated seats are located on
the side of each seat. The system offers two seat
temperature settings of approximately 98.6 F (LO)
and approximately 107.6 F (HI).
As the temperature in the seat rises, the Negative
Temperature Coefficient (NTC) resistance decreases and the voltage reading detected by the
MHSMM increases. The seat heater output is deactivated once the voltage reading reaches it’s upper
threshold for either setting, high or low.
As the temperature decreases, the voltage reading decreases until the lower threshold is reached
for either setting high or low. At this point the seat
heat output is activated once again and this cycle
repeats itself as long as the seat heat request is on.
The thresholds for low and high settings are preprogrammed into the MHSMM memory.
The heated seat switch contain resistors pulled
up to ignition which are processed by the MHSMM
as voltage readings indicating desired heat setting
high or low.
3.11 COMPASS/MINI-TRIP COMPUTER OR
ELECTRONIC VEHICLE INFORMATION
CENTER
The Compass/Mini-Trip Computer (CMTC) or
Electronic Vehicle Information Center (EVIC) is
located in the overhead console. The CMTC or EVIC
supplements the standard vehicle instrumentation.
The CMTC and EVIC use a vacuum fluorescent
(VF) display to supply the vehicle operator with a
compass heading, outdoor temperature, average
fuel economy, distance to empty, instantaneous fuel
economy, trip odometer, elapsed ignition on time,
distance to service, warning messages, and service
messages.
The difference between a CMTC and an EVIC is
that only the EVIC provides additional memory and
feature programming. The EVIC is capable of displaying memory system messages when the vehicle
is equipped with memory systems. The EVIC also
provides the interface to enable and disable vehicle
programmable features when the vehicle is
equipped with certain features. If equipped, the
EVIC is also available with an integrated Universal
Garage Door Opener (UGDO) known as
HomeLinkt.Also if equipped, the EVIC is available
with a Tire Pressure Monitoring (TPM) System.
Both the CMTC and EVIC function buttons are
labeled C/T, RESET, STEP, and MENU. The three
UGDO buttons are labeled with dots to indicate the
channel number.
The BCM supplies most of the information displayed by the CMTC/EVIC. Display information,
except for the internal compass function, is received
over the PCI bus. The CMTC/EVIC sends and
receives data over the PCI bus, communicating with
the BCM and PCM. Tire Pressure Monitoring System information is received by the EVIC in the form
of radio transmissions. The tire pressure sensors
are mounted to the vehicle wheels. For complete
information, refer to the Tire Pressure Monitoring
System section in this publication.
VEHICLE INFORMATION DISPLAY
The CMTC/EVIC provides the following functions:
• Compass direction
• Outside temperature
• Elapsed ignition on time
• Distance to empty
• Average fuel economy
• Trip odometer
• Distance to service
• Driver alert messages:
– TURN SIGNAL ON (with vehicle graphic)
– PERFORM SERVICE
– DOOR OPEN (individual or multiple doors,
with graphic)
– WASHER FLUID LOW (with graphic)
– RKE FOB BATTERY LOW
– LAMP OUT
An audible chime or chimes will accompany any
displayed warning messages. Chime requests with
an OPEN message are dependent upon vehicle
speed.
The CMTC/EVIC will not display information for
any of the screens for which it did not receive the
proper PCI bus data. Refer to the symptom list in
the Overhead Console section for problems related
to the CMTC/EVIC.
The CMTC/EVIC receives the following messages
from the Body Control Module (BCM):
• Verification of US/Metric status
• VF display dimming brightness and exterior
lamp status
• Elapsed Ignition On Time data
• Fuel Economy
• Distance to Empty
• Outside Temperature
• Distance to service
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• Driver warning messages
The CMTC/EVIC receives the following messages
from the Powertrain Control Module (PCM):
• Trip Odometer data
• Vehicle Speed
The CMTC/EVIC transmits the following mes-
sages to the BCM:
• Status Request: Beep, Reset, US/M Toggle
• Current Display
STEP BUTTON
The STEP Button can be used in one of the
following three ways:
1. To sequentially select one of seven displays or
blank display in the following order:
• Average Fuel Economy
• Distance to Empty
• Trip Odometer
• Time Elapsed
• Distance to Service Message
• Individual Tire Pressure (When equipped with
TPM.)
• Off (Blank)
2. To set the magnetic variance zone when VARIANCE=X(X=1-15)isindicated in the VF
Display.
3. To select the displayed programmable feature
setting. (When equipped.)
A reset will only occur if one of the trip functions
that may be reset is currently being displayed.
Pressing the RESET button for more than three (3)
seconds resets the Distance to Service function
while the Distance to Service message is being
displayed. The CMTC/EVIC module will send a
beep request to the BCM.
Simultaneously pressing the RESET button and
the C/T button while turning the ignition from Off
to On will enter the CMTC/EVIC into the selfdiagnostic mode.
COMPASS/TEMPERATURE (C/T) BUTTON
Actuating the Compass/Temperature Button
(C/T) will cause the CMTC/EVIC to display the
compass and temperature information. This function will operate from another traveler display or
from the programmable feature mode.
3.11.1 TRAVELER DISPLAY FUNCTIONS
Using the STEP button will change the CMTC/
EVIC between modes of operation and display the
appropriate information according to data received
from the PCI Bus.
COMPASS/TEMPERATURE
The CMTC/EVIC simultaneously displays the
compass reading and the outside temperature. Outside temperature information is received via the
PCI bus from the PCM.
The CMTC/EVIC module internally senses and
calculates the compass direction.
MENU BUTTON
Use the MENU button to sequentially step the
EVIC through the programmable features.
Use the MENU button to enter the Tire Pressure
Monitoring (TPM) Training Procedure.
RESET BUTTON
The RESET Button has two different functions:
1. To clear the trip functions that may be reset
2. To enter and exit the diagnostic mode
Pressing the RESET button once will clear the
trip function that is currently being displayed (except Distance to Service) and the CMTC/EVIC will
send a PCI bus beep request to the BCM. If the
RESET button is pressed again within 3 seconds,
the CMTC/EVIC will resetALL of the trip functions
and an additional beep request is sent to the BCM.
The trip functions that may be reset are:
• Average Fuel Economy
• Trip Odometer
• Elapsed Time
COMPASS OPERATION
Upon ignition on, if the calibration information
stored in the CMTC/EVIC memory is within the
normal range, the CMTC/EVIC will perform in slow
Auto-Cal mode. In slow Auto-Cal mode, the CMTC/
EVIC continuously compensates for the slowly
changing magnetic field of the vehicle. The compass
module detects changes in the vehicle magnetism
and makes appropriate internal corrections to ensure proper displayed direction.
However, if the calibration information stored in
the CMTC/EVIC memory is not within the normal
range at ignition on, the CMTC/EVIC will enter fast
Auto-Cal. CAL is displayed along with the temperature.
Auto activation of the fast Auto-Cal mode will
also occur when the CMTC/EVIC is subjected to
high magnetic field strength levels, which cause all
compass readings to be erroneous for a continuous
period of five (5) minutes. During fast Auto-Cal,
CAL will be displayed along with the temperature.
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FastAuto-Cal can also be performed manually, by
pressing and holding the RESET button for 10
seconds during the Compass/Temperature display
mode.
3.11.2 SETTING MAGNETIC ZONE
VARIANCE
Variance is the difference between magnetic
North and geographic North. For proper compass
function, the correct variance zone must be set.
Refer to the Zone Variancemap for the correct zone.
Follow these steps to check or change the variance
zone:
• The ignition switch must be in the On position
and the CMTC/EVIC display must not be blank.
• If the compass/temperature data is not currently
being displayed, momentarily press and release
the C/T button to display compass/temp informa-
tion.
• Press and hold the RESET button until VARI-
ANCE = XX is displayed. The CMTC/EVIC will
display the variance zone stored in memory and
the word VARIANCE.
• Use the STEP button to select the proper vari-
ance zone number, 1 through 15.
• After selecting the proper zone number, momen-
tarily press and release the RESET button. The
variance zone is then stored in the memory and
the CMTC/EVIC returns to normal operation.
3.11.3 COMPASS CALIBRATION
The compass module has 2 types of autocalibration; slow-cal and fast-cal. Slow-cal ensures
that during normal vehicle operation the compass
performs auto-calibration functions to keep the
compass sensors in their proper operating range.
Whenever the ignition is On and the CMTC/EVIC
receives PCI bus data indicating that engine RPM
is greater than zero, auto-calibration is performed
continuously.
If the calibration information stored in the compass module memory is not within the normal
range after a power-up cycle, the compass will
display CAL. The CMTC/EVIC will enter into the
fast-cal mode until calibration is complete.
To enter the compass into Manual Calibration
mode, perform the following steps:
• Drive the vehicle to an area away from any large
metal objects or overhead power lines.
• Ensure that the proper variance zone is selected.
See ‘‘Setting Magnetic Zone Variance.’’
• The ignition switch must be in the On position
and the CMTC/EVIC display must not be blank.
• Press the C/T button to view the Compass/
Temperature display.
• Press and hold the RESET button until CAL is
displayed, then release the button.
• Drive slowly, less than 5 MPH (8KPH) in at least
1 complete 360 degree circle.
• CAL will remain illuminated to alert the driver
that the compass is in the calibration mode.
• After calibration is complete, CAL will turn off.
If the compass appears blank, unable to be calibrated, or the compass displays false indications,
the vehicle must be demagnetized. Refer to Compass Demagnetizing Procedure in the Service Manual.
3.11.4 DIAGNOSIS AND TESTING
SELF-CHECK DIAGNOSTICS
The CMTC/EVIC is capable of performing a diagnostic self check on its internal functions. CMTC/
EVIC diagnostics may be performed using a
DRBIIIt or by using the following procedure:
1. With the ignition switch in the OFF position,
depress and hold the RESET and the C/T buttons.
2. Turn the ignition switch to the ON position.
3. Continue to hold both buttons until the software
versions are displayed, then release the buttons.
4. All of the VFD segments will illuminate for 2-4
seconds. Check for segments that do not illuminate or illuminate all the time.
5. When the self-check is complete the EVIC will
display one of the following messages:
• PASS SELF TEST
• FAILED SELF TEST
• NOT RECEIVING J1850 MESSAGE
6. To exit the self-check mode, depress the RESET
button or cycle the ignition switch and the
CMTC/EVIC will return to normal operation.
If a Communication fault is displayed, refer to the
symptom list. If a FAILED is displayed, the CMTC/
EVIC must be replaced.
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3.11.5 AMBIENT TEMPERATURE SENSOR
The ambient air temperature is monitored by the
PCM and displayed by the CMTC/EVIC. The PCM
receives a hardwire input from the ambient temperature sensor (ATS).
The ATS is a variable resistor that operates on a
5-volt reference signal circuit hardwired from the
PCM. The resistance in the ATS changes as the
outside temperature rises or falls. The BCM senses
the change in reference voltage through the ATS
resistor. Based on the resistance of the ATS, the
PCM is programmed to correspond to a specific
temperature. The PCM stores and filters the ambient temperature data and transmits this data to the
CMTC/EVIC via the PCI Bus. The ATS cannot be
adjusted or repaired and, if faulty or damaged, it
must be replaced.
AMBIENT TEMPERATURE SENSOR FAULT
CODES
The outside temperature function is supported by
the ambient temperature sensor (ATS), a signal and
ground circuit hardwired to the PCM, and the
CMTC/EVIC display.
If the CMTC/EVIC display indicates 54°C (130°F)
or the ATS sense circuit is shorted to ground, the
temp display will be 54°C (130°F) to indicate a
SHORT circuit condition.
If the CMTC/EVIC display indicates -40°C
(-40°F) or the ATS sense circuit is open, the temp
display will be -40°C (-40°F) to indicate an OPEN
circuit condition.
If there is an OPEN or SHORT circuit condition,
it must be repaired before the CMTC/EVIC VFD
can be tested.
The ATS is supported by the PCM. Ambient
Temperature Sensor DTCs will be recorded in the
PCM. The ATScan be diagnosed using the following
Sensor Test. Test the ATS circuits using the diagnostics in the Powertrain Diagnostic Procedures
Manual. If the CMTC/EVIC passes the self test, and
the ATS, the circuits, and PCI bus communications
are confirmed to be OK, but the CMTC/EVIC temperature display is inoperative or incorrect, replace
the PCM.
AMBIENT TEMPERATURE SENSOR TEST
1. Turn the ignition OFF.
2. Disconnect the ATS harness connector.
3. Measure the resistance of the ATS using the
following min/max values:
• 0° C (32° F) Sensor Resistance = 29.33 - 35.99
Kilohms
• 10° C (50° F) Sensor Resistance = 17.99 - 21.81
Kilohms
• 20° C (68° F) Sensor Resistance = 11.37 - 13.61
Kilohms
• 25° C (77° F) Sensor Resistance = 9.12 - 10.86
Kilohms
• 30° C (86° F) Sensor Resistance = 7.37 - 8.75
Kilohms
• 40° C (104° F) Sensor Resistance = 4.90 - 5.75
Kilohms
The sensor resistance should read between these
min/max values. If the resistance values are not
OK, replace the Sensor.
3.11.6 HOMELINKT UNIVERSAL
TRANSMITTER
If equipped, the HomeLinkt Universal Transmitter is integrated into the overhead console. For
added security it will operate home security systems that use coded signals known generically as
Rolling Codes. The overhead console display provides visual feedback to the driver,indicating which
HomeLinkt transmitter channel button is being
pressed. The HomeLinkt can learn and store up to
three separate transmitter radio frequency codes to
operate garage door openers, security gates, and
security lighting. The HomeLinkt buttons are
marked with one, two, or three dots. For complete
information, refer to Universal Transmitter in the
Service Manual or the Owner’s Manual.
3.12 TIRE PRESSURE MONITORING
SYSTEM
If equipped with the Tire Pressure Monitoring
System, each of the vehicle’s five wheels will have a
valve stem with a pressure sensor and radio transmitter built in. Signals from the tire pressure
sensors are received and interpreted by the Electronic Vehicle Information Center (EVIC).
A sensor in a mounted wheel will broadcast its
detected pressure once per minute when the vehicle
is moving faster than 40 km/h (25 mph). The spare
tire sensor will broadcast once every hour. Each
sensor’s broadcast is uniquely coded so that the
EVIC can determine location. The individual tire
pressures can be displayed graphically on the
EVIC.
NOTE: The spare tire is only monitored when
equipped with the 5-Tire TPM System.
3.12.1 TRAINING THE EVIC
The EVIC can be trained to recognize the source
locations of pressure sensor signals. The training
procedure is given below:
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1. Locate ‘‘RETRAIN TIRE SENSORS’’ on the
EVIC menu.
When this mode is enabled by selecting ‘‘YES’’,
the EVIC will initiate the following procedure.
2. A display will prompt the user to: ‘‘TRAIN LEFT
FRONT TIRE’’. At this point the user must set
the left front tire sensor to learn mode by positioning a magnet (Relearn Magnet special tool
8821) over the valve stem for at least 5 seconds.
The Remote Tire Pressure Monitor (RTPM) in
the front left tire will transmit a message indicating to the EVIC that it is in learn mode. When
the EVIC has received this message and is
assured that it has learned an ID, the EVIC will
request a horn chirp via a bus message and then
display the next train request. Note: There is a
60 second timer for learning the first tire location and a 30 second timer between the remaining tires. If any of these timers expire the EVIC
will abort the training procedure.
3. The EVIC will request the initiation of a training
sequence for each tire, one-by-one in a clockwise
direction around the vehicle (Left Front, Right
Front, Right Rear, Left Rear and Spare). The
EVIC will allow 30 seconds (60 seconds for the
first tire) from the beginning of the train request
display to the receipt of a unique learn ID
message from the RTPM. If, during a training
session, a 60 or 30 second timer expires before a
unique learn sensor ID is received or the vehicle
is not in park, the EVIC will keep the previous
set of trained IDs and will display ‘‘TRAINING
ABORTED’’ until a button is pressed. Any IDs
learned during the current session will be discarded. The EVIC will not store one ID for
multiple locations.
NOTE: The spare tire is only monitored when
equipped with the 5-Tire TPM System.
4. 4.) Once all four (or five) tires are successfully
trained, the previous set of stored IDs will be
replaced by the new IDs, and the EVIC will
display, ‘‘TRAINING COMPLETE’’ until a button is pressed.
If the vehicle is equipped with the Homelink
feature and a Homelink button is pressed at any
time during the training procedure, the EVIC module will immediately exit the training procedure,
discard any IDs learned in the current session and
perform the Homelink function. After the button is
released, the module will display ‘‘RETRAIN TIRE
SENSORS? NO’’.
The training procedure can be stopped at any
time by pressing the C/T, STEP, RESET or MENU
button. When any of these buttons are pressed the
EVIC will display ‘‘TRAINING ABORTED.’’
Once training is complete, the EVIC can determine when the spare wheel has been mounted on
the vehicle. The spare wheel sensor/transmitter is
expected to transmit once per hour. If the sensor/
transmitter ID for the spare wheel is received at a
shorter interval, the EVIC will request a chime and
display ‘‘SPARE SWAP DETECTED’’ for five seconds.
NOTE: The spare tire message is only
available when equipped with the 5-Tire TPM
System.
3.12.2 PRESSURE THRESHOLDS
The EVIC will monitor the tire pressure signals
from the four (or five) tire sensors and determine if
any tire has gone below the low pressure threshold
or raised above the high pressure threshold. Refer
to the table below.
LOW TIRE PRESSURE THRESHOLDS
SYSTEM STATUS IN-
DICATOR
On 172 kPa (25 PSI)
Off 193 kPa (28 PSI)
HIGH TIRE PRESSURE THRESHOLDS
SYSTEM STATUS IN-
DICATOR
On 310 kPa (45 PSI)
Off 276 kPa (40 PSI)
TIRE PRESSURE
TIRE PRESSURE
3.12.3 CRITICAL AND NON-CRITICAL
PRESSURE ALERTS
A critical alert will be triggered when a tire
pressure has gone below or above a set threshold
pressure. Depending on what the condition is, the
EVIC will request a chime and then display a LOW
PRESSURE or HIGH PRESSURE message indicating the appropriate location.
The alert message will display for three seconds
and then switch to the tire pressure trip screen. The
tire pressure for the tire that has exceeded its
threshold will blink at one second intervals on the
graphic display. The blinking pressure will continue
for the rest of the ignition cycle or until an EVIC
button is pressed. If the display is removed without
correcting the condition, it will reappear without a
chime after 60 seconds to warn the drive of the
low/high pressure condition.
A non-critical alert will be triggered when low or
high pressure threshold has been exceeded in the
spare tire. The ‘‘SPARE LOW PRESSURE’’ or
‘‘SPARE HIGH PRESSURE’’ alert will be displayed
for 60 seconds during each ignition ON cycle. If the
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pressure threshold is exceeded while the ignition is
OFF, the alert will be delayed 8-10 seconds after
ignition ON.
NOTE: The spare tire is only monitored when
equipped with the 5-Tire TPM System.
3.12.4 SYSTEM FAULTS
NOTE: The Remote Tire Pressure Monitors
(RTPM) are not internally serviceable. For a
Sensor Failure or Low Battery fault, the
RTPM must be replaced.
There are four conditions which will cause a Tire
Pressure Monitoring System fault to be set. All fault
codes are associated with a specific wheel location.
1. If the EVIC detects a non-transmitting Sensor/
Transmitter in a road wheel for ten consecutive
minutes with vehicle speed above 25 MPH (40
kph), it will:
a. Store an active fault code.
b. Request a chime.
c. Display ‘‘TIRE SENSOR BAD / MISSING’’.
d. Display a dashed line at the wheel location on
the graphic display if the display is activated.
When the EVIC detects:
2. A low pressure sensor battery status,
3. All five sensors transmitting at a shorter than
expected interval or,
4. No valid pressure sensor ID from the spare tire
for 20 consecutive ignition cycles spaced at least
one hour apart, it will:
a. Store an active fault code.
b. Request a chime.
c. Display ‘‘TIRE SENSOR BAD / MISSING’’.
Use the DRBIIIt Input/Output function to further isolate the specific concern.
The DRBIIIt can be queried to determine the
Sensor/Transmitter status:
• ‘‘Invalid Pressure’’ - The Sensor/Transmitter is
reporting a negative pressure or a pressure above
434 kPa (63 psi).
• ‘‘Low Batt’’ - The Sensor/Transmitter has re-
ported a low battery status for seven consecutive
ignition cycles.
• ‘‘Trained’’ - The Sensor/Transmitter ID code is
recognized by the EVIC.
• ‘‘Active’’ - The vehicle is moving at 40 km/h (25
mph) and/or the Sensor/Transmitter is ‘‘awake’’
and transmitting as expected by the EVIC.
3.12.5 SPARE WHEEL AUTO-LOCATE
sensor transmit intervals, which wheels are
mounted and which one is now the spare. The spare
tire sensor/transmitter transmits once per hour.
The sensor/transmitters in the mounted wheels
transmit once per minute when the vehicle is moving at 40 km/h (25 mph).
3.12.6 REMOVE MAGNET FROM SPARE
(5-TIRE TPM SYSTEM ONLY)
Amagnet is used to initiate a sensor ID transmission. In the EVIC training procedure, the spare
wheel is the last in the sequence. If the magnet is
left on the wheel, the sensor/transmitter will continue its ID transmission. If the EVIC detects 20
transmissions from the spare wheel in 60 seconds
and the vehicle speed is above 40 km/h (25 mph), it
will:
• request a chime.
• display ‘‘REMOVE MAGNET FROM SPARE’’ for
60 seconds per ignition-ON cycle. 1.6 Tire Pressure Unavailable
The EVIC can detect high radio noise interference. When the noise level is too high to distinguish
a transmission from a sensor/transmitter, it will:
• display ‘‘TIRE PRESSURE UNAVAILABLE’’for 5
seconds.
• request a chime
• switch back to previous screen.
3.12.7 TIRE PRESSURE NOW AVAILABLE
If the ‘‘TIRE PRESSURE UNAVAILABLE’’ message was displayed because of radio noise interference, the EVIC will:
• display ‘‘TIRE PRESSURE NOW AVAILABLE’’
for 5 seconds.
• request a chime when the noise level no longer
interferes with sensor/transmitter transmissions.
3.12.8 DIAGNOSING AND CLEARING
SYSTEM FAULTS
All Tire Pressure Monitoring System Faults are
specific to one location. If a ‘‘LOW BATTERY’’fault
is detected, the ‘‘TIRE SENSOR BAD / MISSING’’
message will be displayed. The appropriate sensor/
transmitter can then be replaced.
If a single sensor/transmitter cannot be detected
by the EVIC, replace that sensor transmitter. If
none of the sensors/transmitters can be detected,
refer to symptoms in the EVIC section.
(5-TIRE TPM SYSTEM ONLY)
If the spare tire is mounted on the vehicle, the
EVIC will detect the move and determine from the
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GENERAL INFORMATION
3.12.9 SYSTEM TEST
Atestof the Tire Pressure Monitoring System can
be initiated in the EVIC. The test sequence is as
follows:
1. Scroll to the blank display by pressing the STEP
button.
2. Press and hold the RESET button for five sec-
onds.
3. The EVIC will emit a beep to indicate the start of
the test.
4. The EVIC will clear the sensor signal counters
5. The vehicle icon will be displayed with transmis-
sion counters at each corner. (Same display as
for pressures but with counters in place of pressures.)
6. Drive the vehicle at speeds above 40 km/h (25
mph) for 10 minutes.
7. The counters will increase by one each time a
sensor signal is received by the EVIC (approximately 1/min from each wheel except the spare).
8. The test will continue until any EVIC button is
pressed or until the ignition is cycled to OFF.
3.13 POWER DOOR LOCK SYSTEM
The door lock switches provide a variable amount
of voltage through the multiplexed (MUX) circuit to
the BCM. Depending upon that input and various
conditions that must be met (i.e. door lock inhibit,
etc.), the BCM will determine the action to be taken
and activate the proper relay for approximately 250
to 350 msec. If the vehicle is equipped with the
vehicle theft security system it will have the central
locking feature which locks and unlocks all doors
from the cylinder lock switches. These switches are
on separate multiplexed circuits to the BCM and
have trouble codes relating to each of them.
RKE Remote Keyless Entry - This feature allows
locking and unlocking of the vehicle door(s) by
remote control using a hand-held transmitter
(sometimes referred to as a fob) to activate a radio
receiver (RKE module). This module plugs into the
body control module which is directly connected to
the junction block. With this feature RKE can be
added to a non-equipped vehicle by installing a
module. If the vehicle is equipped with the vehicle
theft security system, RKE will also arm and disarm that system. A 4-button transmitter is used
which provides lock, unlock, decklid release and
panic features. Decklid release is only operable
while the vehicle is in the park position. The module
is capable of retaining up to 4 transmitter codes.
Rolling code, which increases security, is also included in this system. If the transmitter goes out of
synchronization it is easily put back in by pressing
the lock button when the transmitter is within
range. An external antenna has been added which
plugs into the module to provide greater range.
RKE will also turn on the interior lamps when a
valid unlock command is received and will extinguish the interior lamps when a lock command is
received and all doors are closed.
On a vehicle equipped with the memory system,
when the unlock button on a specified transmitter
(either #1 or #2) is pressed the BCM will send a
recall message to both the MHSMM and the PCI
radio. They will in turn position the driver seat and
both mirrors along with setting the radio presets.
Door Lock Inhibit - When the key is in the
ignition and the driver front door is open, all door
lock switches are disabled. The unlock switches are
still functional. This protects against locking the
vehicle with the keys still in the ignition.
Automatic (rolling) Door Locks - This feature can
be enabled or disabled by using either the DRBIIIt
or the customer programmable method. When enabled, all doors will lock when the vehicle reaches a
speed of 15 mph (24 kmh) and all doors are closed.
If a door is opened and the vehicle slows to below 15
mph (24 kmh), the locks will operate again once all
doors are closed and the speed is above 15 mph (24
kmh).
Decklid Release - Decklid release is a function of
the body control module. Troublecodesare provided
to assist in the diagnosis of this system.
Customer programmable features are: Horn
chirp, one or two press decklid release, programming a new transmitter (using a previously programmed transmitter) and rolling door locks.
3.14 SENTRY KEY IMMOBILIZER SYSTEM
(SKIS)
The SKIS is an immobilizer system designed to
prevent unauthorized vehicle operation. The system consists of a Sentry Key Immobilizer Module
(SKIM) and ignition key(s) called Sentry Key(s)
which are equipped with a transponder chip. The
SKIM communicates over the Programmable Communication Interface multiplex system (PCI) bus
network to the Body Control Module (BCM), Powertrain Control Module (PCM), and/or the DRB
scan tool. For programming the Sentry Key Transponder and other technical information refer to
Powertrain information.
3.15 SPEED PROPORTIONAL STEERING
(IF EQUIPPED)
The Speed Proportional Steering automatically
adjusts steering effort based on the vehicle speed.
The amount of effort required to turn the steering
wheel is determined by a 500-Hz Pulse Width
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GENERAL INFORMATION
Modulated (PWM) output signal. The desired duty
cycle of the PWM is selected from a calibration table
internal to the Body Control Module (BCM).
To obtain the desired solenoid current the duty
cycle of the solenoid can be compensated according
to a current measuring feedback circuit. The speed
proportional steering system is always active with
the ignition on.
The 500Hz PWM output signal is capable of
generating a duty cycle from 0% (full off - minimum
steering assist) to approximately 50% duty cycle
(full on - maximum steering assist) in small increments. The duty cycle is determined by vehicle
speed and is continuously modified by solenoid
current feedback information. With the engine running and vehicle speed between 0 km/h (0 mph) and
approximately 32 km/h (20 mph) the duty cycle will
be about 50%. Between approximately 32 km/h (20
mph) and 100 km/h (60 mph) the duty cycle will
gradually decrease to 0% based upon vehicle speed.
Above approximately 100 km/h (60 mph) there is no
assist provided by the speed proportional steering
system. Maximum solenoid current will be limited
to one amp but the system operates at about 0.5
amp. Speed Proportional Steering Solenoid resistance is 5.7-6.3 ohms at 20° C (68° F).
The Speed Proportional Steering System can detect three failure modes relating to the Speed Proportional Steering PWM driver located in the BCM.
If any DTC is set, the solenoid is shut off, unless the
condition goes away before approximately 10 seconds. Once the DTC is set, the solenoid will remain
off for the remainder of the ignition cycle.
1. An open or shorted to ground circuit fault is
detected by monitoring the feedback circuit. If
the BCM detects that the feedback circuit has
zero current when the software indicates the
solenoid circuit should have current, the DTC
will be set. This test is performed every 250
milliseconds.
2. Ashort to voltage fault is detected by monitoring
the feedback circuit. The DTC will be set when
the BCM has sensed that there was current on
the solenoid feedback circuit when the solenoid
was turned off.
3. An over temperature or thermal shutdown DTC
will be set by default if the internal diagnostic
pin of the solenoid driver is at a low level, but the
feedback measurement does not show a high
PWM output current.
3.16 VEHICLE 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. The modules are wired in parallel. Connections are made through the BCM. The
BCM acts as a splice to connect each module and
the Data Link Connector (DLC) together. The following modules are used on 2003 LH:
• Airbag Control Module
• Left Side Impact Airbag Control Module
• Right Side Impact Airbag Control Module
• Controller Antilock Brake
• Powertrain Control Module - Next Generation
Controller (NGC)
• Radio (If equipped)
• CD Changer (If equipped)
• Overhead Travel Information System (If
equipped)
• Memory Heated Seat and Memory Mirror (If
equipped)
• Automatic Temperature Control (If equipped)
• Body Control Module
• Sentry Key Immobilizer Module (If equipped)
• Mechanical Instrument Cluster
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 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 to response. Causes
of a complete PCI Bus Communication Failure
include a short to ground or battery on the PCI
circuit. Individual module no response can be
caused by an open circuit at the BCM or at the
module, or an open battery or ground circuit to the
affected module.
Symptoms of a complete PCI Bus Communication
Failure would include but are not limited to:
• All gauges on the EMIC stay at zero
• All telltales on EMIC illuminate
• EMIC backlighting at full intensity
• No response received from any module on the PCI
bus (except PCM)
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• 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 +/- SIGNALS 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 used by the DRBIIIt and in no way indicates whether or not the PCI bus is operational. The
message is only an indication that a module is
either not responding or the vehicle is not equipped.
NOTE: Communication over the bus is essential
to the proper operation of the vehicles on-board
diagnostic systems and the DRBIIIt. Problems with
the operation of the bus or DRBIIIt must be corrected before proceeding with diagnostic testing. If
there is a problem, refer to the Communications
category of this manual.
GENERAL INFORMATION
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GENERAL INFORMATION
NOTE: For 2003 model year, some vehicles
will integrate the Transmission Control
Module and Powertrain Control Module into a
single control module. This new module is
the Next Generation Controller for
DaimlerChrysler and will be referred to as the
Powertrain Control Module (PCM). The
Transmission Control System is part of the
Powertrain Control Module.
New Diagnostic procedures and New DTC
numbers are some of the changes you will
see which reflect the new combined module
technology. The PCM will have four color
coded connectors C1 through C4, (C1-BLK,
C2-GRAY, C3-WHITE, C4-GREEN), each PCM
connector will have 38 pins each. Two new
tools are used for probing and repairing the
New PCM connectors. A New tool to release
the pins from the PCM connectors Miller
#3638 is introduced, you must use the Miller
tool #3638 to release the connector pins or
harness and connector damage will occur.
Also a New tool for probing connectors Miller
#8815 is introduced, you must use the Miller
tool #8815 to probe the PCM pins or harness
and connector damage will occur. There is
also a new Verification test and module
replacement procedure for the PCM.
3.16.1 BUS FAILURE MESSAGE
Odometer Displays “No Bus” - The Mechanical
Instrument Cluster (MIC) cannot communicate
over the bus and does not know why.
3.17 VEHICLE THEFT SECURITY SYSTEM
This passive system is designed to protect against
vehicle theft. The vehicle theft security system
(VTSS) is part of the body control module (BCM),
which monitors vehicle doors and the ignition for
unauthorized operation. The alarm activates by
sounding the horn, flashing the headlamps, park
and tail lamps, and the VTSS indicator lamp. Passive arming occurs upon normal vehicle exit by
turning the ignition off, opening the driver’s door,
locking the doors with the power lock, and closing
the driver’s door or locking the doors with RKE.
Manual arming occurs by using the key to lock the
doors after closing them. The indicator lamp on the
dash will flash for 15 seconds, showing that arming
is in progress. If no monitored systems are activated
during this period, the system will arm and the
indicator will flash at a slow rate. If the indicator
lamp remains steadily lit during the arming process, this can indicate a possible loss of communi-
cation with the PCM or loss of trunk knock out
switch. When something triggers the alarm, the
system will signal the headlamps, park lamps, and
horn for about 3 minutes.
For complaints about the TheftAlarm going off on
it’s own use the DRBIIIt and select “BCM” then
“Input/Output” and read the “Last VTSS cause”
status.
Tamper Alert - The VTSS indicator lamp will
flash twice quickly to indicate a tamper condition
has occurred.
Manual Override - The system will not arm if the
doors are locked using the manual lock control (by
hand) or if the locks are actuated by an inside
occupant after the door is closed.
To verify the system, proceed as follows:
1. Open the driver’s door.
2. Remove the ignition key (but keep it in hand).
3. Lock the doors with the power lock switch or the
RKE.
4. Close the driver’s door.
NOTE: After the doors are closed, locking the
doors with RKE will also arm the system.
NOTE: If the VTSS indicator lamp flashed, the
system is operational and verified. If not, there may
be a problem with the system.
Arming/Disarming - Active arming occurs when
the remote keyless entry transmitter is used to lock
the vehicle doors, whether the doors are open or
closed. If one or more doors are open, the arming
sequence is completed only after all doors are
closed.
Passive disarming occurs upon normal vehicle
entry (unlocking front door with the key). This
disarming also will halt the alarm once it has been
activated.
Active disarming occurs when the remote keyless
entry transmitter is used to unlock the vehicle
doors. This disarming also will halt the alarm once
it has been activated.
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 possibly has been lost.
3.18 WIPER SYSTEM
The wiper system provides the driver with the
normal wiper (low and high speeds), intermittent
wipe, wipe after wash, headlamp washers and pulse
wipe functions. The driver selects the wiper function via the resistive multiplexed stalk switch
mounted on the steering column. The BCM uses
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GENERAL INFORMATION
input signal from the wiper stalk switch, wiper
motor park switch, and the washer switch to control
the wipe system. The Body Control Module (BCM)
then controls the relays and timing functions to
provide the driver selected features.
3.18.1 SYSTEM FEATURES
Speed Sensitive Intermittent Wipe Mode
There are 6 individual delay times with a minimum delay of 1/2 second to a maximum of 18
seconds. When the vehicle speed is under 10 MPH
(6 KMH), the delay time is doubled providing a
range of 1 second to 36 seconds.
Pulse Wipe
When the wiper is in the off position and the
driver presses the wash button for more than 62
milliseconds, but less than 1/2 second, 2 wipe cycle
in low speed mode will be provided.
Park after Ignition Off
Because the wiper relays are powered from the
battery the BCM can run the wipers to park after
the ignition is turned off.
Wipe after Wash
When the driver presses the wash button for over
1/2 second and then releases it, the wiper will
continue to run for 2 additional wipe cycles.
The wiper system utilizes the BCM to control the
on/off and hi/low relays for low and hi speed wiper
functions, intermittent wiper delay as the switch
position changes, pulse wipe, wipe after wash mode,
and wiper motor park functions. The BCM uses the
vehicle speed input to double the usual delay time
below 10 MPH (6 KMH).
ver:2.14
date: 26 Jul 93
file: key_iff.cc
date: Jul26 1993
line: 548
err: Oxi
User-Requested COLD boot
Press MORE to switch between this display
and the application screen.
Press F4 when done noting information.
3.21 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 of a faulty cable or
vehicle wiring.
3.22 DISPLAY IS NOT VISIBLE
Low temperatures will affect the visibility of the
display. Adjust the contrast to compensate for this
condition.
3.19 USING THE DRBIIIT
Refer to the DRBIIIt user guide for instructions
and assistance with reading trouble codes, erasing
trouble codes, and other DRBIIIt functions.
3.20 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
for information and assistance. This is a sample of
such an error message display:
4.0 DISCLAIMERS, SAFETY,
WARNINGS
4.1 DISCLAIMERS
All information, illustrations, and specifications
contained in this manual are based on the latest
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GENERAL INFORMATION
information available at the time of publication.
The right is reserved to make changes at any time
without notice.
4.2 SAFETY
4.2.1 TECHNICIAN SAFETY INFORMATION
WARNING: 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
EXHAUSE 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 the 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.
When diagnosing a body system problem, it is
important to follow approved procedures where
applicable. These procedures can be found in this
General Information Section or in the service manual procedures. Following these procedures is very
important to safety of individuals performing diagnostic tests.
4.2.2 VEHICLE PREPARATION FOR
TESTING
Make sure the vehicle being tested has a fully
charged battery. If it does not, false diagnostic codes
or error messages may occur.
4.2.3 SERVICING SUB-ASSEMBLIES
Some components of the body system are intended to be serviced as an assembly only.Attempting to remove or repair certain system subcomponents may result in personal injury and/or
improper system operation. Only those components
with approved repair and installation procedures in
the service manual should be serviced.
4.2.4 DRBIIIT SAFETY INFORMATION
WARNING: EXCEEDING THE LIMITS OF THE
DRBIIIT MULTIMETER IS DANGEROUS. IT
CAN EXPOSE YOU TO SERIUOS 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 measurement 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
Frequency Measured
Frequency Generated
Temperature -58 - 1100°F
* 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.
0-10kHz
-50 - 600°C
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GENERAL INFORMATION
4.3 WARNINGS
4.3.1 VEHICLE DAMAGE WRANINGS
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 complains will require a test drive as part
of the repair verification procedure. The purpose of
the test drive is to try to duplicate the diagnostic
code or symptom condition.
WARNING: 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.
ASDM
ATC automatic temperature control
BCM body control module
CAB controller antilock brake
DAB driver airbag
DLC data link connector
DTC diagnostic trouble code
DR driver
EBL electric back lite (rear window de-
EVIC electronic vehicle information center
HVAC heater ventilation, air conditioning
MHSMM memory heated seat mirror module
MIC mechanical instrument cluster
MTC manual temperature control
NGC next generation controller
OBD on board diagnostics
ODO odometer
ORC occupant restraint controller
OTIS overhead travel information system
PAB passenger airbag
PASS passenger
PCI Programmable Communication In-
airbag system diagnostic module (ACM)
fogger)
terface (vehicle communication bus)
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 Load Tool
6.0 GLOSSARY OF TERMS
ABS antilock brake system
ACM airbag control module
AECM airbag electronic control module
(ACM)
PCM powertrain control module
PDC power distribution center
PRO proportional
PWM pulse width modulated
RKE remote keyless entry
SAB seat airbag
SIACM side impact airbag control module
SKIM sentry key immobilizer module
SKIS sentry key immobilizer system
SQUIB also called initiator (located in side
airbag)
SRS supplemental restraint system
STG short to ground
TCM transmission control module
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GENERAL INFORMATION
TPM tire pressure monitor
VFD vacuum fluorescent display
VTSS vehicle theft security system
24
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7.0
DIAGNOSTIC INFORMATION AND
PROCEDURES
25
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AIRBAG
Symptom List:
ACCELEROMETER 1
ACCELEROMETER 2
INTERNAL 1
INTERNAL 2
OUTPUT DRIVER 1
OUTPUT DRIVER 2
STORED ENERGY FIRING 1
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be INTERNAL MODULE TEST.
When Monitored and Set Condition:
ACCELEROMETER 1
When Monitored: With the ignition on, the module on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the module identifies an out of range internal circuit.
ACCELEROMETER 2
When Monitored: With the ignition on, the module on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the module identifies an out of range internal circuit.
INTERNAL 1
When Monitored: With the ignition on, the module on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the module identifies an out of range internal circuit.
INTERNAL 2
When Monitored: With the ignition on, the module on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the module identifies an out of range internal circuit.
OUTPUT DRIVER 1
When Monitored: With the ignition on the module on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the module identifies an out of range internal circuit.
OUTPUT DRIVER 2
When Monitored: With the ignition on the module on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the module identifies an out of range internal circuit.
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AIRBAG
INTERNAL MODULE TEST — Continued
STORED ENERGY FIRING 1
When Monitored: With the ignition on the ACM on board diagnostics continuously
performs internal circuit tests.
Set Condition: This DTC will set if the ACM identifies an out of range internal circuit.
POSSIBLE CAUSES
AIRBAG CONTROL MODULE - ACM
LEFT SIDE IMPACT AIRBAG CONTROL MODULE - LSIACM
RIGHT SIDE IMPACT AIRBAG CONTROL MODULE - RSIACM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Ensure the battery is fully charged.
WARNING: IF THE MODULE IS DROPPED AT ANY TIME, IT MUST BE
REPLACED.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
From the list below, select the appropriate module reporting this diagnostic trouble
code.
SELECT ONE:
All
ACM - ACTIVE or STORED DTC
WARNING: MAKE SURE THE BATTERY IS DISCONNECTED,
THEN WAIT TWO MINUTES BEFORE PROCEEDING. Replace
the Airbag Control Module in accordance with Service Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
LEFT SIACM - ACTIVE or STORED DTC
WARNING: MAKE SURE THE BATTERY IS DISCONNECTED,
THEN WAIT TWO MINUTES BEFORE PROCEEDING. Replace
the Left Side Impact Airbag Control Module in accordance with
Service Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
RIGHT SIACM - ACTIVE or STORED DTC
WARNING: MAKE SURE THE BATTERY IS DISCONNECTED,
THEN WAIT TWO MINUTES BEFORE PROCEEDING. Replace
the Right Side Impact Airbag Control Module in accordance with
Service information.
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
Symptom List:
AIRBAG WARNING INDICATOR OPEN
AIRBAG WARNING INDICATOR SHORT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be AIRBAG WARNING INDICATOR
TEST.
When Monitored and Set Condition:
AIRBAG WARNING INDICATOR OPEN
When Monitored: With ignition on theACM monitors the PCI Bus for a message from the
MIC containing the airbag warning indicator status. The MIC transmits the message one
time at ignition on, upon lamp state change, or in response to the ACM lamp message.
Set Condition: This DTC will set immediately if the indicator status is OPEN .
AIRBAG WARNING INDICATOR SHORT
When Monitored: With ignition on theACM monitors the PCI Bus for a message from the
MIC containing the airbag warning indicator status. The MIC transmits the message one
time at ignition on, upon lamp state change, or in response to the ACM lamp message.
Set Condition: This DTC will set immediately if the indicator status is SHORT.
POSSIBLE CAUSES
MIC, COMMUNICATION FAILURE
WARNING INDICATOR
ACM, WARNING INDICATOR
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
All
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
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AIRBAG
AIRBAG WARNING INDICATOR TEST — Continued
TEST ACTION APPLICABILITY
2 With the DRBIIIt, ensure PCI Bus communications with the Instrument Cluster.
Is the Instrument Cluster communicating on the PCI Bus?
Yes → Go To 3
No → Refer to category COMMUNICATION CATEGORYand select the
related symptom INSTRUMENT CLUSTER BUS +/- SIGNAL
OPEN.
Perform BODY VERIFICATION TEST - VER 1.
All
3 With the DRBIIIt select PASSIVE RESTRAINTS, AIRBAG and MONITOR DIS-
PLAY.
Using the DRBIIIt, read the WARNING LAMP MONITOR screen.
Select the LAMP STATUS displayed on the DRB monitors screen.
Does the DRBIIIt show the LAMP STATUS: OK?
YES
Go To 4
NO
Replace Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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
All
All
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
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AIRBAG
Symptom:
CALIBRATION MISMATCH
When Monitored and Set Condition:
CALIBRATION MISMATCH
When Monitored: With ignition on, the ACM monitors the PCI Bus for the VIN message
containing the body style. Note: The VIN message should match the vehicle VIN plate.
Set Condition: If the Body style stored in ACM does not exactly match the vehicle body
style indicated by the PCM for 2 consecutive VIN messages, then the fault shall be set.
POSSIBLE CAUSES
PCM, PCI COMMUNICATION FAILURE
COMPARE VEHICLE IDENTIFICATION NUMBERS
ORC CALIBRATION MISMATCH
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 Turn the ignition on.
Connect the DRB to the data link connector and select PASSIVE RESTRAINTS,
AIRBAG, SYSTEM TEST.
With the DRBIIIt, read the system test.
Does the DRB show PCM Active on the Bus:?
All
All
Yes → Go To 3
No → Refer to category COMMUNICATION CATEGORYand select the
related symptom.
Perform AIRBAG VERIFICATION TEST - VER 1.
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AIRBAG
CALIBRATION MISMATCH — Continued
TEST ACTION APPLICABILITY
3 With the DRB select ENGINE MISCELLANEOUS, select MISC FUNCTION, and
then CHECK VIN to read the Vehicle Identification Number in the Powertrain
Control Module.
Compare the VIN displayed on the DRB screen and the Vehicle VIN plate.
Does the VIN plate and the PCM VIN match?
Yes → Go To 4
No → Replace the Powertrain Control Module and program with the
correct vehicle identification number.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
Replace the 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.
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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
All
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
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AIRBAG
Symptom:
CLUSTER MESSAGE MISMATCH
When Monitored and Set Condition:
CLUSTER MESSAGE MISMATCH
When Monitored: After the MIC bulb test is completed, the ACM compares the Lamp
Request by ACM, On or Off, and the Lamp on by MIC, On or Off, PCI Bus messages. Each
message is transmitted one time per second or when a change in the lamp state occur.
Set Condition: If the Lamp Request by ACM, On or Off, and the Lamp on by MIC, On or
Off, messages do not match for 10 seconds, the code will set.
POSSIBLE CAUSES
MIC DIAGNOSTIC CODES
CLUSTER MESSAGE MISMATCH
STORED CODE OR INTERMITTENT CONDITION
ACM, CLUSTER MESSAGE MISMATCH
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 With the DRBIIIt, read the MIC DTCs.
Does the DRBIIIt display any active Diagnostic Codes?
Yes → Refer to symptom list for problems related to Instrument Cluster.
All
All
No → Go To 3
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AIRBAG
CLUSTER MESSAGE MISMATCH — Continued
TEST ACTION APPLICABILITY
3 With the DRBIIIt select PASSIVE RESTRAINTS, AIRBAG, MONITOR DISPLAY
and WARNING LAMP STATUS.
Cycle the ignition key and observe the LAMP ON BY MIC and LAMP REQ BY ACM
monitors after the 6 to 8 second indicator test.
Does the LAMP ON BY MIC and LAMP REQ BY ACM monitors match?
YES
Go To 4
NO
Replace Mechanical Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
All
4 WARNING: MAKE SURE THE BATTERY IS DISCONNECTED, THEN WAIT
TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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
All
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
33
Page 50
AIRBAG
Symptom:
CONFIGURATION ERROR
When Monitored and Set Condition:
CONFIGURATION ERROR
When Monitored: With ignition on the Side Impact Airbag Control Module monitors the
unused squib terminals for the a valid squib circuit resistance.
Set Condition: When the SIACM detects a valid squib circuit resistance across the
unused terminals.
POSSIBLE CAUSES
SELECT MODULE REPORTING DTC
MISS WIRED LEFT SIACM CONNECTOR
MISS WIRED RIGHT SIACM CONNECTOR
LEFT SIDE IMPACT AIRBAG CONTROL MODULE - LSIACM
RIGHT SIDE IMPACT AIRBAG CONTROL MODULE - LSIACM
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ONE:
LEFT SIACM - ACTIVE DTC
Go To 2
LEFT SIACM - STORED DTC
Go To 4
RIGHT SIACM - ACTIVE DTC
Go To 3
RIGHT SIACM - STORED DTC
Go To 4
All
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
34
Page 51
AIRBAG
CONFIGURATION ERROR — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN IGNITION OFF,DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
Disconnect the Left SIACM connector.
NOTE: Check connectors - Clean and repair as necessary.
Using the wiring diagram/schematic as a guide, inspect the Left SIACM connector
wiring.
Is the connector correctly wired?
Yes → Replace the Left Side Impact Airbag Control Module in accor-
dance with Service Instructions. WARNING: IF THE SIDE IMPACT AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Rewire the Left Side Impact Airbag Control Module connector.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
3 WARNING: TURN IGNITION OFF,DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
Disconnect the Right SIACM connector.
NOTE: Check connectors - Clean and repair as necessary.
Using the wiring diagram/schematic as a guide, inspect the Right SIACM connector
wiring.
Is the connector correctly wired?
Yes → Replace the Right Side Impact Airbag Control Module in accor-
dance with Service Instructions. WARNING: IF THE SIDE IMPACT AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Rewire the Right Side Impact Airbag Control Module connector.
Perform AIRBAG VERIFICATION TEST - VER 1.
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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
All
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
35
Page 52
AIRBAG
Symptom:
DRIVER SQUIB 1 CIRCUIT OPEN
When Monitored and Set Condition:
DRIVER SQUIB 1 CIRCUIT OPEN
When Monitored: With the ignition on the ACM monitors the resistance of the Driver
Squib 1 circuits.
Set Condition: The ACM detects an open circuit or high resistance in the Driver Squib 1
circuits.
POSSIBLE CAUSES
DRIVER AIRBAG OPEN
CLOCKSPRING SQUIB CIRCUITS OPEN
DRIVER SQUIB 1 LINE 1 OR LINE 2 CIRCUIT OPEN
ACM, DRIVER SQUIB 1 CIRCUIT OPEN
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
36
Page 53
AIRBAG
DRIVER SQUIB 1 CIRCUIT OPEN — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED 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 Driver Airbag.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Driver Airbag connectors.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show DRIVER SQUIB 1 CIRCUIT OPEN?
Yes → Go To 3
No → Replace the Driver Airbag in accordance with the Service Infor-
mation.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Clockspring connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Clockspring connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show DRIVER SQUIB 1 CIRCUIT OPEN?
Yes → Go To 4
No → Replace the Clockspring in accordance with the Service Informa-
tion.
Perform AIRBAG VERIFICATION TEST - VER 1.
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool adaptor to the Airbag Control Module connector.
Disconnect the Load Tool from the Clockspring connector.
Measure the resistance of the Driver Squib 1 Line 1 and Line 2 circuit between the
ACM adaptor and the Clockspring connector.
Is the resistance below 1.0 ohms on both circuits?
Yes → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
All
No → Repair open or high resistance in the Driver Squib 1 Line 1 or
Line 2 circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
37
Page 54
AIRBAG
DRIVER SQUIB 1 CIRCUIT OPEN — Continued
TEST ACTION APPLICABILITY
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
38
Page 55
Symptom:
DRIVER SQUIB 1 CIRCUIT SHORT
When Monitored and Set Condition:
DRIVER SQUIB 1 CIRCUIT SHORT
When Monitored: With the ignition on the ACM monitors the resistance of the Driver
Squib 1 circuits.
Set Condition: The ACM has detected low resistance on the Driver Squib 1 circuits.
POSSIBLE CAUSES
DRIVER AIRBAG CIRCUIT SHORT
CLOCKSPRING, DRIVER SQUIB 1 CIRCUIT SHORT
DRIVER SQUIB 1 LINE 1 SHORT TO LINE 2
AIRBAG
ACM, DRIVER SQUIB 1 CIRCUIT SHORT
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Driver Airbag.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED 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.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Driver Airbag connectors.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show DRIVER SQUIB 1 CIRCUIT SHORT?
All
All
Yes → Go To 3
No → Replace Driver Airbag.
Perform AIRBAG VERIFICATION TEST - VER 1.
39
Page 56
AIRBAG
DRIVER SQUIB 1 CIRCUIT SHORT — Continued
TEST ACTION APPLICABILITY
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Clockspring connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Clockspring connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show DRIVER SQUIB 1 CIRCUIT SHORT?
Yes → Go To 4
No → Replace Clockspring.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool adaptor to the Airbag Control Module connector.
Disconnect the Load Tool from the Clockspring connector.
Measure the resistance between the Driver Squib 1 Line 1 and Line 2 at the
Clockspring connector.
Is the resistance below 10K ohms?
Yes → Repair the Driver Squib 1 Line 1 circuit shorted to Driver Squib
1 Line 2 circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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
All
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
40
Page 57
Symptom:
DRIVER SQUIB 1 SHORT TO BATTERY
When Monitored and Set Condition:
DRIVER SQUIB 1 SHORT TO BATTERY
When Monitored: With the ignition on the ACM monitors the voltage of the Driver Squib
1 circuits.
Set Condition: The ACM has detected high voltage on the Driver Squib 1 circuits.
POSSIBLE CAUSES
DRIVER AIRBAG CIRCUIT SHORT TO BATTERY
CLOCKSPRING, DRIVER SQUIB 1 CIRCUIT SHORT TO BATTERY
DRIVER SQUIB 1 LINE 1 OR LINE 2 SHORT TO BATTERY
AIRBAG
ACM, DRIVER SQUIB 1 CIRCUITS SHORT TO BATTERY
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED ACM DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
41
Page 58
AIRBAG
DRIVER SQUIB 1 SHORT TO BATTERY — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED 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 Driver Airbag.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Driver Airbag connectors.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCS.
Does the DRBIIIt show DRIVER SQUIB 1 SHORT TO BATTERY?
Yes → Go To 3
No → Replace the Driver Airbag in accordance with the Service Infor-
mation.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Clockspring connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Clockspring connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show DRIVER SQUIB 1 SHORT TO BATTERY ?
Yes → Go To 4
No → Replace the Clockspring in accordance with the Service Informa-
tion.
Perform AIRBAG VERIFICATION TEST - VER 1.
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool adaptor to the Airbag Control Module connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Disconnect the Load Tool from the Clockspring connector.
Measure the voltage on the Driver Squib 1 Line 1 and Line 2 circuits between the
Clockspring connector and ground.
Is there any voltage present?
All
All
Yes → Repair the Driver Squib 1 Line 1 or Line 2 circuits shorted to
battery.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
42
Page 59
AIRBAG
DRIVER SQUIB 1 SHORT TO BATTERY — Continued
TEST ACTION APPLICABILITY
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
43
Page 60
AIRBAG
Symptom:
DRIVER SQUIB 1 SHORT TO GROUND
When Monitored and Set Condition:
DRIVER SQUIB 1 SHORT TO GROUND
When Monitored: With the ignition on the ACM monitors the resistance of the Driver
Squib 1 circuits.
Set Condition: The ACM has detected a short to ground in the Driver Squib 1 circuits.
POSSIBLE CAUSES
DRIVER AIRBAG CIRCUIT SHORT TO GROUND
CLOCKSPRING, DRIVER SQUIB 1 CIRCUIT SHORT TO GROUND
DRIVER SQUIB 1 LINE 1 OR LINE 2 SHORTED TO GROUND
ACM, DRIVER SQUIB 1 CIRCUITS SHORT TO GROUND
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
44
Page 61
AIRBAG
DRIVER SQUIB 1 SHORT TO GROUND — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED 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 Driver Airbag Module.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Driver Airbag connectors.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show DRIVER SQUIB 1 SHORT TO GROUND?
Yes → Go To 3
No → Replace the Driver Airbag in accordance with the Service Infor-
mation.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Clockspring connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Clockspring connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show DRIVER SQUIB 1 SHORT TO GROUND?
Yes → Go To 4
No → Replace the Clockspring.
Perform AIRBAG VERIFICATION TEST - VER 1.
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool adaptor to the Airbag Control Module connector.
Disconnect the Load Tool from the Clockspring connector.
Measure the resistance of the Driver Squib 1 Line 1 and Line 2 circuits between
Clockspring connector and ground.
Is the resistance below 10K ohms on either circuit?
Yes → Repair Driver Squib 1 Line 1 or Line 2 circuits shorted to ground.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
All
45
Page 62
AIRBAG
DRIVER SQUIB 1 SHORT TO GROUND — Continued
TEST ACTION APPLICABILITY
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
46
Page 63
Symptom:
INTERROGATE LEFT SIACM
When Monitored and Set Condition:
INTERROGATE LEFT SIACM
When Monitored: With ignition on, the ACM 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 ACM once each second or upon any change in the active DTCs.
Set Condition: The Code will set, if the ACM receives an Lamp On status message from
the Left SIACM. NOTE: This indicates that there was an active diagnostic trouble code in
the Left SIACM.
POSSIBLE CAUSES
INTERROGATE LEFT SIACM
AIRBAG
ACM, NO ACTIVE LEFT SIACM DTCS
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 Turn the ignition on.
With the DRBIIIt read the Left SIACM active DTCs.
Did the DRBIIIt show any active DTCs?
Yes → Refer to symptom list for problems related to Left SIACM.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
All
No → Go To 3
47
Page 64
AIRBAG
INTERROGATE LEFT SIACM — Continued
TEST ACTION APPLICABILITY
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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 ?
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
All
48
Page 65
Symptom:
INTERROGATE RIGHT SIACM
When Monitored and Set Condition:
INTERROGATE RIGHT SIACM
When Monitored: With ignition on, the ACM monitors the PCI Bus for a Right SIACM
status message containing the airbag warning indicator On - OFF request. The status
message is sent to the ACM once each second or upon any change in the active DTCs.
Set Condition: The Code will set, if the ACM receives an Lamp On status message from
the Right SIACM. NOTE: This indicates that there is an active diagnostic trouble code in
the Right SIACM.
POSSIBLE CAUSES
INTERROGATE RIGHT SIACM
AIRBAG
NO ACTIVE RIGHT SIACM DTCS
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 Turn the ignition on.
With the DRBIIIt read the Right SIACM active DTCs.
Did the DRBIIIt show any active DTCs?
Yes → Refer to symptom list for problems related to Right SIACM.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
All
No → Go To 3
49
Page 66
AIRBAG
INTERROGATE RIGHT SIACM — Continued
TEST ACTION APPLICABILITY
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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 ?
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
All
50
Page 67
Symptom:
LOSS OF IGNITION RUN - START
When Monitored and Set Condition:
LOSS OF IGNITION RUN - START
When Monitored: With the ignition in the Run or Start position the module monitors the
Run - Start circuit for proper system voltage.
Set Condition: The code will set, if the voltage on the Run - Start circuit drops below
approximately 6.0 volts for the ACM or 6.7 volts for the SIACM.
POSSIBLE CAUSES
AIRBAG SYSTEM COMPONENT SHORTED TO GROUND
IGNITION SWITCH RUN-START CIRCUIT OPEN
AIRBAG
FUSED IGNITION SWITCH OUTPUT RUN-START CIRCUIT OPEN
ACM, FUSED IGNITION OUTPUT RUN-START CIRCUIT OPEN
MODULE RUN - START SHORTED TO GROUND
RSIACM, LOW IGNITION RUN - START VOLTAGE
LSIACM - LOW IGNITION RUN - START VOLTAGE
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
From the list below, select the appropriate module and DTC type for the this
diagnostic trouble code.
SELECT ONE:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 6
All
LEFT SIACM - ACTIVE DTC
Go To 7
RIGHT SIACM - ACTIVE DTC
Go To 8
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
51
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AIRBAG
LOSS OF IGNITION RUN - START — Continued
TEST ACTION APPLICABILITY
2 Turn ignition off.
Remove and inspect the Airbag Run-Start Fuse.
NOTE: Check connectors - Clean and repair as necessary.
Is the Fuse open?
Yes → Go To 3
No → Go To 4
All
3 WARNING: TURN IGNITION OFF,DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
Measure the resistance of the Fused Ignition Switch Output Run-Start circuit
between the Airbag Run-Start Fuse and ground.
While monitoring the ohmmeter, disconnect each airbag system component on the
Run - Start circuit one at a time.
NOTE: Refer to the service information and system schematics to identify
component(s) on the run - start circuit.
Is the resistance above 10K ohms:
Yes - after removing a component?
Replace the shorted airbag system component in accordance with
Service Instructions and replace the airbag Run - Start fuse.
WARNING: IF THE MODULE IS DROPPED AT ANY TIME, IT
MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
No - after all components are removed?
Repair the Fused Ignition Run - Start circuit shorted to ground
and replace Airbag Run-Start Fuse.
Perform AIRBAG VERIFICATION TEST - VER 1.
4 Turn the ignition on.
Measure the voltage of the Ignition Switch Output circuit between the Airbag
Run-Start Fuse and ground.
Is the voltage above approximately 6.0 volts?
Yes → Go To 5
All
All
No → Repair the open Ignition Switch Output Run-Start circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Reinstall the previously removed Airbag Run-Start Fuse.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Measure the voltage of the Fused Ignition Switch Output Run-Start Circuit between
the Airbag Control Module connector ground.
Is the voltage above approximately 6.0 volts?
Yes → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Repair open Fused Ignition Switch Output Run-Start circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
52
All
Page 69
AIRBAG
LOSS OF IGNITION RUN - START — Continued
TEST ACTION APPLICABILITY
6 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
7 WARNING: TURN IGNITION OFF,DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Left Side ImpactAirbagControlModuleinaccordance
with Service Instructions. WARNING: IF THE MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
8 WARNING: TURN IGNITION OFF,DISCONNECT THE BATTERYAND WAIT
TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Right Side Impact Airbag Control Module in accordance with Service information. WARNING: IF THE MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
All
53
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AIRBAG
Symptom:
LOSS OF IGNITION RUN ONLY
When Monitored and Set Condition:
LOSS OF IGNITION RUN ONLY
When Monitored: Withthe ignition in the run position the module monitors the Run Only
circuit for proper system voltage.
Set Condition: If the voltage on the Run Only circuit drops below 6.0 volts, the code will
set.
POSSIBLE CAUSES
IGNITION SWITCH OUTPUT RUN CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT RUN CIRCUIT OPEN
ACM, FUSED IGNITION OUTPUT RUN CIRCUIT OPEN
CHECKING FOR A SHORTED RUN CIRCUIT
FUSED IGNITION SWITCH OUTPUT RUN CIRCUIT SHORT TO GROUND
ACM, FUSED IGNITION RUN CIRCUIT SHORT TO GROUND
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 8
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 Turn the ignition off.
Remove and inspect the Airbag Run circuit fuse.
Is the Fuse open?
All
All
Yes → Go To 3
No → Go To 5
54
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AIRBAG
LOSS OF IGNITION RUN ONLY — Continued
TEST ACTION APPLICABILITY
3 Remove the Airbag Run fuse.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the Fused Ignition Switch Output Run circuit between the
Run Fuse and ground.
Is the resistance below 10.0 ohms ?
Yes → Go To 4
No → Replace the defective fuse.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the Fused Ignition Switch Output Run circuit between the
ACM connector and ground.
Is the resistance below 10K ohms ?
Yes → Repair the Fused Ignition Switch Output Run circuit for a short
to ground and replace Airbag Run Fuse.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Airbag Control Module in accordance with Service
Instructions and replace the Run Only Fuse. WARNING: IF THE
AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT
MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 Turn the ignition on.
Measure the voltage of the Ignition Switch Output Run circuit between the Airbag
Run circuit fuse and ground.
Is the voltage above approximately 6.0 volts?
Yes → Go To 6
No → Repair the open Ignition Switch Output Run circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
6 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Reinstall the airbag Run fuse.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Measure the voltage of the Fused Ignition Switch Output Run circuit at the Airbag
Control Module connector.
Is the voltage above approximately 6.0 volts?
All
All
All
Yes → Go To 7
No → Repair the an open or high resistance in the Fused Ignition
Switch Output Run circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
55
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AIRBAG
LOSS OF IGNITION RUN ONLY — Continued
TEST ACTION APPLICABILITY
7 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
8 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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 ?
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
All
56
Page 73
Symptom:
MODULE NOT CONFIGURED FOR SAB
When Monitored and Set Condition:
MODULE NOT CONFIGURED FOR SAB
When Monitored: With ignition on, the ORC monitors the PCI Bus for a message
containing an 9A9 in the 4 th position of the VIN. This character identifies the type of safety
equipment and should match the VIN. The PCM transmits the VIN every 3.5 seconds.
Set Condition: The code will set, if the ORC detects a Side Impact Airbag Module active
on the PCI Bus and the 4 th character of the VIN message is not an 9A9.
POSSIBLE CAUSES
PCM, PCI COMMUNICATION FAILURE
AIRBAG
CHECK PCM VIN
ACM, NOT CONFIGURED FOR SIDE AIRBAGS
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 Connect the DRB to the data link connector and select PASSIVE RESTRAINTS,
AIRBAG, SYSTEM TEST
With the DRBIIIt, read the PCM Active on the Bus
Does the DRB show PCM Active on the Bus:?
All
All
Yes → Go To 3
No → Refer to category COMMUNICATION and select the related
symptom.
Perform AIRBAG VERIFICATION TEST - VER 1.
57
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AIRBAG
MODULE NOT CONFIGURED FOR SAB — Continued
TEST ACTION APPLICABILITY
3 With the DRB read the Vehicle Identification Number in the Powertrain Control
Module.
Compare the VIN displayed on the DRB screen and the Vehicle VIN plate.
Does the VIN plate and the PCM VIN match?
Yes → Go To 4
No → Replace the Powertrain Control Module and program with the
correct vehicle identification number.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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
All
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
58
Page 75
Symptom:
NO CLUSTER MESSAGE
When Monitored and Set Condition:
NO CLUSTER MESSAGE
When Monitored: With ignition on, the ACM monitors the PCI Bus for a message from
the MIC containing the airbag warning indicator status. The MIC transmits the message
one time at ignition on, lamp state change, or in response to the ACM message.
Set Condition: If the MIC message is not received for 10 consecutive seconds, the code
will set.
POSSIBLE CAUSES
MIC, COMMUNICATION FAILURE
AIRBAG
ACM, NO CLUSTER MESSAGES
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
Turn the ignition on.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 With the DRBIIIt, ensure PCI Bus communications with the Instrument Cluster.
Is the Instrument Cluster communicating on the PCI Bus?
Yes → Go To 3
No → Refer to category COMMUNICATION CATEGORYand select the
related symptom INSTRUMENT CLUSTER BUS +/- SIGNAL
OPEN.
All
All
59
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AIRBAG
NO CLUSTER MESSAGE — Continued
TEST ACTION APPLICABILITY
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
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 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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 ?
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
All
60
Page 77
Symptom:
NO LEFT SIACM MESSAGE
When Monitored and Set Condition:
NO LEFT SIACM MESSAGE
When Monitored: With ignition on, the ACM monitors the PCI Bus for the Left Side
Impact Airbag Control Module status message. The Left SIACM transmits the status
message to the ACM at 1 - second intervals.
Set Condition: If theACM fails to see the Left SIACM status message on the PCI Bus for
10 seconds the code will set.
POSSIBLE CAUSES
NO LEFT SIACM MESSAGE
AIRBAG
ACM, NO LEFT SIACM MESSAGE
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
2 With the DRBIIIt select PASSIVE RESTRAINTS, SIDE AIRBAG then LEFT SIDE
from the DRB menu.
Does the DRBIIIt show NO RESPONSE or BUS +/- SIGNAL OPEN?
Yes → Refer to the Communication category for the related symptom.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Go To 3
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
All
All
All
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
61
Page 78
AIRBAG
NO LEFT SIACM MESSAGE — Continued
TEST ACTION APPLICABILITY
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
62
Page 79
Symptom:
NO ODOMETER MESSAGE
When Monitored and Set Condition:
NO ODOMETER MESSAGE
When Monitored: With ignition on, the ACM monitors the PCI Bus for the Odometer
message from the Body Control Module. The PCM transmits the odometer message at 1
second intervals.
Set Condition: The code will set, if the ACM does not see the odometer message for 10
seconds.
POSSIBLE CAUSES
PCM, PCI COMMUNICATION FAILURE
AIRBAG
NO ODOMETER MESSAGE
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
ORC, NO ODOMETER MESSAGE
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
Turn the ignition on.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 Connect the DRBIIIt to the data link connector and select PASSIVE RESTRAINTS,
AIRBAG, SYSTEM TEST.
With the DRBIIIt, read the PCM Active on the Bus:.
Does the DRB show PCM ACTIVE ON THE BUS?
All
All
Yes → Go To 3
No → Refer to category 9 COMMUNICATION CATEGORY9 and select
the related symptom.
Perform AIRBAG VERIFICATION TEST - VER 1.
63
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AIRBAG
NO ODOMETER MESSAGE — Continued
TEST ACTION APPLICABILITY
3 With the DRB select ENGINE, MISCELLANEOUS, SELECT MISC FUNCTION,
and then CHECK VIN to read the Vehicle Identification Number in the Powertrain
Control Module.
Compare the VIN displayed on the DRB screen and the Vehicle VIN plate.
Does the VIN plate and the PCM VIN match?
Yes → Go To 4
No → Replace the Powertrain Control Module and program with the
correct vehicle identification number.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
Replace the 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.
5 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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
All
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
64
Page 81
Symptom:
NO PCI TRANSMISSION
When Monitored and Set Condition:
NO PCI TRANSMISSION
When Monitored: With the ignition on and the module transmitting information on the
PCI BUS.
Set Condition: The code will set if the onboard diagnostic cannot detect the module
transmitting information on the PCI BUS for 4 consecutive seconds. NOTE: Any PCI Bus
Failure will may cause a stored code to set.
POSSIBLE CAUSES
AIRBAG CONTROL MODULE - ACM
AIRBAG
LEFT SIDE IMPACT AIRBAG CONTROL MODULE - LSIACM
RIGHT SIDE IMPACT AIRBAG CONTROL MODULE - RSIACM
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
65
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AIRBAG
NO PCI TRANSMISSION — Continued
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
IF THE MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Turn the ignition on.
From the list below, select the appropriate module and DTC type for the this
diagnostic trouble code.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
Select the appropriate module and type of DTC
ACM - ACTIVE
WARNING: TURN THE IGNITION OFF, DISCONNECT THE
BATTERYANDWAIT TWO MINUTES BEFORE PROCEEDING.
Replace the Airbag Control Module in accordance with Service
Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
ACM - STORED
Go To 2
LEFT SIACM - ACTIVE
WARNING: TURN THE IGNITION OFF, DISCONNECT THE
BATTERYANDWAIT TWO MINUTES BEFORE PROCEEDING.
Replace the Left Side ImpactAirbagControlModuleinaccordance
with Service Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
LEFT SIACM - STORED
Go To 2
RIGHT SIACM - ACTIVE
WARNING: TURN THE IGNITION OFF, DISCONNECT THE
BATTERYANDWAIT TWO MINUTES BEFORE PROCEEDING.
Replace the Right Side Impact Airbag Control Module in accordance with Service information.
Perform AIRBAG VERIFICATION TEST - VER 1.
RIGHT SIACM - STORED
Go To 2
66
Page 83
AIRBAG
NO PCI TRANSMISSION — Continued
TEST ACTION APPLICABILITY
2 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
67
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AIRBAG
Symptom:
NO RIGHT SIACM MESSAGE
When Monitored and Set Condition:
NO RIGHT SIACM MESSAGE
When Monitored: With ignition on, the ACM monitors the PCI Bus for the Right Side
Impact Airbag Control Module status message. The Right SIACM transmits the status
message to the ACM at 1 - second intervals.
Set Condition: If the ACM fails to see the Right SIACM status message on the PCI Bus
for 10 seconds the code will set.
POSSIBLE CAUSES
NO RIGHT SIACM MESSAGE
ACM, NO RIGHT SIACM MESSAGE
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 With the DRBIIIt select SIDE AIRBAG and the RIGHT SIDE AIRBAG from the
DRBIIIt menu.
Does the DRBIIIt show NO RESPONSE or BUS +/- SIGNAL OPEN?
Yes → Refer to the COMMUNICATION category for the related symp-
tom.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
All
No → Go To 3
68
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AIRBAG
NO RIGHT SIACM MESSAGE — Continued
TEST ACTION APPLICABILITY
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
If there are no possible causes remaining, view repair.
Repair
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
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 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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 ?
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
All
69
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AIRBAG
Symptom:
PASSENGER SQUIB 1 CIRCUIT OPEN
When Monitored and Set Condition:
PASSENGER SQUIB 1 CIRCUIT OPEN
When Monitored: When the ignition is On, the ACM monitors the resistance of the
Passenger Squib 1 circuits.
Set Condition: The ACM has detected an open circuit or high resistance on the Passenger
Squib 1 circuits.
POSSIBLE CAUSES
PASSENGER AIRBAG OPEN
PASSENGER SQUIB 1 LINE 1 OR LINE 2 CIRCUIT OPEN
STORED CODE OR INTERMITTENT CONDITION
ACM, PASSENGER SQUIB 1 CIRCUIT OPEN
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
70
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AIRBAG
PASSENGER SQUIB 1 CIRCUIT OPEN — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED 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 Passenger Airbag.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Passenger Airbag connector.
WARNING: TURN IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show PASSENGER SQUIB 1 CIRCUIT OPEN?
Yes → Go To 3
No → Replace the Passenger Airbag in accordance with the Service
Information.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool adaptor to the Airbag Control Module connector.
Disconnect the Load Tool from the Passenger Airbag connector.
Measure the resistance of the Passenger Squib 1 Line 1 and Line 2 circuit between
the ACM Adaptor and the Passenger Airbag connector.
Is the resistance below 1.0 ohms on both circuits?
Yes → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Repair open or high resistance in Passenger Squib 1 Line 1 or
Line 2 circuits.
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
71
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AIRBAG
PASSENGER SQUIB 1 CIRCUIT OPEN — Continued
TEST ACTION APPLICABILITY
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
72
Page 89
Symptom:
PASSENGER SQUIB 1 CIRCUIT SHORT
When Monitored and Set Condition:
PASSENGER SQUIB 1 CIRCUIT SHORT
When Monitored: When the ignition is on, the ACM monitors the resistance of the
Passenger Squib 1 circuits.
Set Condition: The ACM has detected low resistance in the Passenger Squib 1 circuits.
POSSIBLE CAUSES
PASSENGER AIRBAG CIRCUIT SHORT
PASSENGER SQUIB 1 LINE 1 SHORT TO LINE 2
ACM, PASSENGER SQUIB 1 CIRCUIT SHORT
AIRBAG
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
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: DO NOT PLACE AN INTACT UNDEPLOYED 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 Passenger Airbag.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Passenger Airbag connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active airbag DTCs.
Does the DRBIIIt show PASSENGER SQUIB 1 CIRCUIT SHORT?
All
All
Yes → Go To 3
No → Replace Passenger Airbag in accordance with the Service Infor-
mation.
Perform AIRBAG VERIFICATION TEST - VER 1.
73
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AIRBAG
PASSENGER SQUIB 1 CIRCUIT SHORT — Continued
TEST ACTION APPLICABILITY
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool adapter to the Airbag Control Module connector.
Disconnect the Load Tool from the Passenger airbag connector.
Measure the resistance between Passenger Squib 1 Line 1 and Squib 1 Line 2 circuit
at the Passenger Airbag connector.
Is the resistance below 10K ohms?
Yes → Repair Passenger Squib 1 Line 1 circuit short to Passenger Squib
1 Line 2 circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
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 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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 ?
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
All
74
Page 91
Symptom:
PASSENGER SQUIB 1 SHORT TO BATTERY
When Monitored and Set Condition:
PASSENGER SQUIB 1 SHORT TO BATTERY
When Monitored: When the ignition is on, theACM monitors the voltage of the Passenger
Squib 1 circuits.
Set Condition: The ACM has detected high voltage on the Passenger Squib 1 circuits.
POSSIBLE CAUSES
PASSENGER AIRBAG CIRCUIT SHORT TO BATTERY
PASSENGER SQUIB 1 LINE 1 OR LINE 2 SHORT TO BATTERY
ACM, PASSENGER SQUIB 1 CIRCUIT SHORT TO BATTERY
AIRBAG
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
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: DO NOT PLACE AN INTACT UNDEPLOYED 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 Passenger Airbag connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Passenger Airbag connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show PASSENGER SQUIB 1 CIRCUIT SHORT TO BATTERY?
All
All
Yes → Go To 3
No → Replace Passenger Airbag in accordance with the Service Infor-
mation.
Perform AIRBAG VERIFICATION TEST - VER 1.
75
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AIRBAG
PASSENGER SQUIB 1 SHORT TO BATTERY — Continued
TEST ACTION APPLICABILITY
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool adaptor to the Airbag Control Module connector.
WARNING: TURN IGNITION ON, THEN RECONNECT THE BATTERY.
Disconnect the Load Tool from the Passenger Airbag connector.
Measure the voltage on the Passenger Squib 1 Line 1 and Line 2 circuits between the
Passenger Airbag connector and ground.
Is there any voltage present?
Yes → Repair Passenger Squib 1 Line 1 or Line 2 circuit short to battery.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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 ?
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
All
76
Page 93
Symptom:
PASSENGER SQUIB 1 SHORT TO GROUND
When Monitored and Set Condition:
PASSENGER SQUIB 1 SHORT TO GROUND
When Monitored: When the ignition is on, the ACM monitors the resistance of the
Passenger Squib 1 circuits for low resistance.
Set Condition: The ACM has detected a short to ground in the Passenger Squib 1 circuits.
POSSIBLE CAUSES
PASSENGER AIRBAG CIRCUIT SHORT TO GROUND
PASSENGER SQUIB 1 LINE 1 AND LINE 2 SHORT TO GROUND
STORED CODE OR INTERMITTENT CONDITION
AIRBAG
ACM, PASSENGER SQUIB 1 CIRCUIT SHORT TO GROUND
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the battery is fully charged.
Turn the ignition on.
NOTE: Connect the appropriate Load Tool to the Passenger Airbag connector.
SELECT ACTIVE or STORED DTC:
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 4
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: DO NOT PLACE AN INTACT UNDEPLOYED 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 Passenger Airbag connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Passenger Airbag connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the active Airbag DTCs.
Does the DRBIIIt show PASSENGER SQUIB 1 CIRCUIT SHORT TO GROUND?
All
All
Yes → Go To 3
No → Replace the Passenger Airbag in accordance with the Service
Information.
Perform AIRBAG VERIFICATION TEST - VER 1.
77
Page 94
AIRBAG
PASSENGER SQUIB 1 SHORT TO GROUND — Continued
TEST ACTION APPLICABILITY
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERYAND
WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module connector
NOTE: Check connectors - Clean repair as necessary.
Connect the appropriate Load Tool adaptor to the Airbag Control Module connector.
Disconnect the Load Tool from the Passenger Airbag connector.
Measure the resistance of the Passenger Squib 1 Line 1 or Line 2 circuit between the
Passenger Airbag Module Connector and ground.
Is the resistance below 10K ohms on either circuit?
Yes → Repair Passenger Squib 1 Line 1 and Line 2 circuits for a short to
ground.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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 ?
Yes → Select appropriate symptom from Symptom List.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
All
78
Page 95
Symptom:
SEAT SQUIB CIRCUIT OPEN
When Monitored and Set Condition:
SEAT SQUIB CIRCUIT OPEN
When Monitored: Withthe ignition is On, the SIACM monitors the resistance of the Seat
Squib circuits.
Set Condition: When the SIACM detects an open circuit or high resistance on the Seat
Squib circuits.
POSSIBLE CAUSES
SEAT AIRBAG OPEN
SEAT SQUIB 1 LINE 1 OR LINE 2 CIRCUIT OPEN
AIRBAG
SIACM, SEAT SQUIB CIRCUIT OPEN
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Ensure the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ONE:
LEFT SIACM - ACTIVE DTC
Go To 2
LEFT SIACM - STORED DTC
Go To 4
RIGHT SIACM - ACTIVE DTC
Go To 2
RIGHT SIACM - STORED DTC
Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
79
Page 96
AIRBAG
SEAT SQUIB CIRCUIT OPEN — 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 Seat Airbag connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Seat Airbag connector.
WARNING: TURN IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read the SIACM active DTC’s.
Does the DRB show SEAT SQUIB CIRCUIT OPEN?
Yes → Go To 3
No → Replace Seat Airbag in accordance with the Service Information.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
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 Airbag Load Tool Jumper.
Disconnect the Side Impact Airbag Control Module Connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load TooladaptortotheSide ImpactAirbagControlModule
connector.
Measure the resistance of the Seat Squib 1 Line 1 and Line 2 circuits between the
Load Tool SIACM adaptor and the Seat Airbag connector.
Is the resistance below 1.0 ohms on both circuits?
Yes → Replace the Side Impact Airbag Control Module in accordance
with the Service information. WARNING: IF THE SIDE IMPACT
AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT
MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Repair open or high resistance in the Seat Squib 1 Line 1 or Line
2 circuits.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
80
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AIRBAG
SEAT SQUIB CIRCUIT OPEN — Continued
TEST ACTION APPLICABILITY
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
81
Page 98
AIRBAG
Symptom:
SEAT SQUIB CIRCUIT SHORT
When Monitored and Set Condition:
SEAT SQUIB CIRCUIT SHORT
When Monitored: When the ignition is on, the SIACM monitors the resistance between
the Seat Squib circuits.
Set Condition: When the SIACM detects a low resistance between the Seat Squib
circuits.
POSSIBLE CAUSES
SEAT AIRBAG SHORT
SEAT SQUIB 1 LINE 1 SHORT TO LINE 2
SIACM, SEAT SQUIB CIRCUIT SHORT
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Ensure the battery is fully charged.
Turn the ignition on.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ONE:
LEFT SIACM - ACTIVE DTC
Go To 2
LEFT SIACM - STORED DTC
Go To 4
RIGHT SIACM - ACTIVE DTC
Go To 2
RIGHT SIACM - STORED DTC
Go To 4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
All
82
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AIRBAG
SEAT SQUIB CIRCUIT SHORT — Continued
TEST ACTION APPLICABILITY
2 WARNING: TURN THE 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 Seat Airbag connector.
NOTE: Check connectors - Clean repair as necessary.
Connect the appropriate Load Tool to the Seat Airbag connector.
WARNING: TURN IGNITION ON, THEN RECONNECT THE BATTERY.
With the DRB, read the SIACM active DTC’s.
Does the DRB show SEAT SQUIB CIRCUIT SHORT?
Yes → Go To 3
No → Replace Seat Airbag in accordance with the Service Information.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
3 WARNING: TURN THE 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.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool adaptor to the SIACM connector.
Disconnect the Side Impact Airbag Control Module connector
Measure the resistance between the Seat Squib 1 Line 1 and Line 2 circuits at the
Seat Airbag connector.
Is the resistance below 10K ohms?
Yes → Repair Seat Squib 1 Line 1 shorted to Line 2 circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
No → Replace the Side Impact Airbag Control Module in accordance
with Service Instructions. WARNING: IF THE SIDE IMPACT
AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT
MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
All
83
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AIRBAG
SEAT SQUIB CIRCUIT SHORT — Continued
TEST ACTION APPLICABILITY
4 NOTE: Ensure the battery is fully charged.
With the DRBIIIt, record and erase all DTCs from all modules.
All active codes must be resolved before diagnosing any stored codes.
Maintain a safe distance from all airbags while performing the following steps.
With the DRBIIIt monitor active codes as you work through the system.
NOTE: If equipped with Passenger Airbag On-Off switch, read the DTC’s in
all switch positions.
Wiggle the wiring harness and connectors of the appropriate airbag system and
rotate the steering wheel from stop to stop.
NOTE: Check connectors - Clean and repair as necessary.
You have just attempted to simulate the condition that initially set the trouble code
message.
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.
- Visuallyinspectthe 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.
No → No problem found at this time. Erase all codes before returning
vehicle to customer.
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