Jeep 2003 KJ Body Service Manual – PDF DOWNLOAD

Description

Jeep 2003 KJ Body Service Manual – PDF DOWNLOAD

FILE DETAILS:

Jeep 2003 KJ Body Service Manual – PDF DOWNLOAD

Language : English
Pages : 478
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

Jeep 2003 KJ Body Service Manual – PDF DOWNLOAD

1 0 INTRODUCTION 1
1 1 SYSTEM COVERAGE 1
1 2 SIX STEP TROUBLESHOOTING PROCEDURE 1
2 0 IDENTIFICATION OF SYSTEM 1
3 0 SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION 1
3 1 AIRBAG SYSTEM/OCCUPANT RESTRAINT CONTROLLER SYSTEM 1
3 1 1 DRIVER AIRBAG 2
3 1 2 CLOCKSPRING 4
3 1 3 PASSENGER AIRBAG 4
3 1 4 SEAT BELT TENSIONER (SBT) 5
3 1 5 SEAT BELT SWITCH (SBS) 5
3 1 6 SIDE IMPACT AIRBAG CONTROL MODULE (SIACM) 5
3 1 7 CURTAIN AIRBAGS 6
3 1 8 FRONT IMPACT SENSOR 6
3 1 9 SPECIAL TOOLS 7
3 1 11 DIAGNOSTIC TROUBLE CODES 7
3 1 11 1 ACTIVE CODES 7
3 1 11 2 STORED CODES 7
3 2 AUDIO SYSTEM 7
3 2 1 REMOTE RADIO CONTROLS 8
3 2 2 CD CHANGER 8
3 3 BODY CONTROL MODULE 8
3 3 1 DOOR AJAR SYSTEM 9
3 3 2 EXTERIOR LIGHTING 9
3 3 3 INTERIOR LIGHTING 9
3 3 4 OVERHEAD CONSOLE 10
3 3 4 1 ELECTRONIC VEHICLE INFORMATION CENTER (EVIC) 10
3 3 5 POWER DOOR LOCKS/REMOTE KEYLESS ENTRY (RKE) 13
3 3 6 REAR WINDOW DEFOGGER 14
3 3 7 1 VEHICLE THEFT SECURITY SYSTEM (VTSS) 14
3 3 7 2 VEHICLE THEFT SECURITY SYSTEM (VTSS) (EXPORT ONLY) 14
3 3 8 WINDSHIELD WIPER SYSTEM (FRONT) 15
3 3 9 THE BCM IS ALSO INVOLVED IN THE FOLLOWING FUNCTIONS: 15
3 3 9 1 VEHICLE SPEED SENSING 15
3 3 9 2 DETECTION / ANALYSIS OF MISCELLANEOUS BODY
SWITCHES 15
3 3 9 3 DRIVER INFORMATION WARNINGS (CHIME) 15
3 4 COMMUNICATION 16
3 5 INSTRUMENT CLUSTER 17
3 5 1 DIAGNOSTIC SELF TEST 17
3 6 USING THE DRBIIIT 17
3 7 DRBIIIT ERROR MESSAGES AND BLANK SCREEN 17
3 7 1 DRBIIIT DOES NOT POWER UP 18
3 7 2 DISPLAY IS NOT VISIBLE 18
4 0 DISCLAIMERS, SAFETY, WARNINGS 18
4 1 DISCLAIMERS 18
4 2 SAFETY 18
4 2 1 TECHNICIAN SAFETY INFORMATION 18
i
TABLE OF CONTENTS – Continued
4 2 2 VEHICLE PREPARATION FOR TESTING 18
4 2 3 SERVICING SUB-ASSEMBLIES 18
4 2 4 DRBIIIT SAFETY INFORMATION 19
4 3 WARNINGS 19
4 3 1 VEHICLE DAMAGE WARNINGS 19
4 3 2 ROAD TESTING A COMPLAINT VEHICLE 19
5 0 REQUIRED TOOLS AND EQUIPMENT 19
6 0 GLOSSARY OF TERMS 20
7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 21
AIRBAG
ACCELEROMETER 1 22
ACCELEROMETER 2 22
INTERNAL 1 22
OUTPUT DRIVER 1 22
SAFING SENSOR 22
STORED ENERGY FIRING 1 22
AIRBAG WARNING INDICATOR OPEN 24
AIRBAG WARNING INDICATOR SHORT 24
CLUSTER MESSAGE MISMATCH 26
CONFIGURATION ERROR 28
CURTAIN SQUIB CIRCUIT OPEN 30
CURTAIN SQUIB CIRCUIT SHORT 33
CURTAIN SQUIB SHORT TO BATTERY 36
CURTAIN SQUIB SHORT TO GROUND 39
DRIVER SEAT BELT SWITCH CIRCUIT OPEN 42
DRIVER SEAT BELT SWITCH SHORT TO BATTERY 44
DRIVER SEAT BELT SWITCH SHORT TO GROUND 46
DRIVER SEAT BELT TENSIONER CIRCUIT OPEN 48
DRIVER SEAT BELT TENSIONER CIRCUIT SHORT 50
DRIVER SEAT BELT TENSIONER SHORT TO BATTERY 52
DRIVER SEAT BELT TENSIONER SHORT TO GROUND 54
DRIVER SQUIB 1 CIRCUIT OPEN 56
DRIVER SQUIB 1 CIRCUIT SHORT 59
DRIVER SQUIB 1 SHORT TO BATTERY 61
DRIVER SQUIB 1 SHORT TO GROUND 64
DRIVER SQUIB 2 CIRCUIT OPEN 67
DRIVER SQUIB 2 CIRCUIT SHORT 70
DRIVER SQUIB 2 SHORT TO BATTERY 73
DRIVER SQUIB 2 SHORT TO GROUND 76
INTERROGATE LEFT SIACM 79
INTERROGATE RIGHT SIACM 81
LEFT FRONT IMPACT SENSOR INTERNAL 1 83
NO LEFT FRONT IMPACT SENSOR COMMUNICATION 83
LOSS OF IGNITION RUN – START 87
LOSS OF IGNITION RUN ONLY 90
MODULE NOT CONFIGURED FOR SAB 93
NO CLUSTER MESSAGE 95
NO LEFT SIACM MESSAGE 97
NO PCI TRANSMISSION 99
ii
TABLE OF CONTENTS – Continued
NO RIGHT FRONT IMPACT SENSOR COMMUNICATION 102
RIGHT FRONT IMPACT SENSOR INTERNAL 1 102
NO RIGHT SIACM MESSAGE 106
PASSENGER SEAT BELT SWITCH CIRCUIT OPEN 108
PASSENGER SEAT BELT SWITCH SHORT TO BATTERY 108
PASSENGER SEAT BELT SWITCH SHORT TO GROUND 108
PASSENGER SQUIB 1 CIRCUIT OPEN 110
PASSENGER SQUIB 1 CIRCUIT SHORT 113
PASSENGER SQUIB 1 SHORT TO BATTERY 115
PASSENGER SQUIB 1 SHORT TO GROUND 117
PASSENGER SQUIB 2 CIRCUIT OPEN 119
PASSENGER SQUIB 2 CIRCUIT SHORT 122
PASSENGER SQUIB 2 SHORT TO BATTERY 124
PASSENGER SQUIB 2 SHORT TO GROUND 126
AUDIO
ALL OUTPUTS SHORT – BASE AUDIO SYSTEM 128
ALL OUTPUTS SHORT – PREMIUM AUDIO SYSTEM 132
CASSETTE PLAYER INOP 134
CD MECHANICAL FAILURE 134
*AM/FM SWITCH INOPERATIVE 134
*ANY STATION PRESET SWITCH INOPERATIVE 134
*BALANCE INOPERATIVE 134
*CD EJECT SWITCH INOPERATIVE 134
*EQUALIZER INOPERATIVE 134
*FADER INOPERATIVE 134
*FF/RW SWITCH INOPERATIVE 134
*HOUR/MINUTE SWITCHES INOPERATIVE 134
*PAUSE/PLAY SWITCH INOPERATIVE 134
*PWR SWITCH INOPERATIVE 134
*SCAN SWITCH INOPERATIVE 134
*SEEK SWITCH INOPERATIVE 134
*SET SWITCH INOPERATIVE 134
*TAPE EJECT SWITCH INOPERATIVE 134
*TIME SWITCH INOPERATIVE 134
*TUNE SWITCH INOPERATIVE 134
CD CHANGER MECHANICAL FAILURE 136
CD CHANGER READ FAILURE 137
CD CHANGER TEMPERATURE HIGH 138
CD PLAY FAILURE 139
CD READ FAILURE 140
CD TEMPERATURE HIGH 141
LOW VOLTAGE LEVEL 142
NO ANTENNA CONNECTION 143
POWER AMP SHUTDOWN – BASE AUDIO SYSTEM 144
POWER AMP SHUTDOWN – PREMIUM AUDIO SYSTEM 148
*REMOTE RADIO SWITCHES INOPERATIVE (IF EQUIPPED) 150
CHIME
*CHIME INOPERATIVE 154
*CHIME SOUNDS WITH DRIVER DOOR OPEN KEY REMOVED 155
*KEY IN IGNITION AND DRIVER’S DOOR OPEN CHIME INOPERATIVE 156
*VEHICLE SPEED WARNING CHIME PROBLEM 158
iii
TABLE OF CONTENTS – Continued
COMMUNICATION
BATTERY IOD DISCONNECT AT BCM 159
EEPROM CHECKSUM FAILURE 161
FLASH CHECKSUM FAILURE 162
ITM MESSAGES NOT RECEIVED 163
PCM MESSAGE NOT RECEIVED 164
*NO RESPONSE FROM ACM 166
*NO RESPONSE FROM BODY CONTROL MODULE 168
*NO RESPONSE FROM COMPASS MINI-TRIP COMPUTER 170
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE 172
*NO RESPONSE FROM ECM (PCI BUS) – DIESEL ONLY 174
*NO RESPONSE FROM ECM (SCI ONLY) – DIESEL ONLY 175
*NO RESPONSE FROM INSTRUMENT CLUSTER 177
*NO RESPONSE FROM INTRUSION TRANSCEIVER MODULE 179
*NO RESPONSE FROM LEFT SIACM 181
*NO RESPONSE FROM PCM (PCI BUS) 183
*NO RESPONSE FROM PCM (SCI ONLY) 185
*NO RESPONSE FROM RADIO 188
*NO RESPONSE FROM RIGHT SIACM 190
*NO RESPONSE FROM SENTRY KEY IMMOBILIZER MODULE 192
*NO RESPONSE FROM TRANSMISSION CONTROL MODULE 194
*PCI BUS COMMUNICATION FAILURE 197
COMPASS/MINI-TRIP COMPUTER
BUS MESSAGES MISSING 199
COMPASS TEST FAILURE 200
EVIC INTERNAL FAILURE 200
NO BCM MESSAGES RECEIVED 201
NO PCM MESSAGES RECEIVED 202
*ANY SWITCH ON EVIC INOPERATIVE 203
*AVERAGE FUEL INOPERATIVE OR WRONG 203
*CMTC FAILS TO RESPOND TO INSTRUMENT PANEL DIMMING 203
*DISTANCE TO EMPTY INOPERATIVE OR WRONG 203
*ELAPSED TIME INOPERATIVE OR WRONG 203
*TRIP ODOMETER INOPERATIVE OR WRONG 203
*UNIVERSAL GARAGE DOOR OPENER (UGDO) INOPERATIVE 203
*EVIC INOPERATIVE 204
*TEMP DISPLAY INOPERATIVE OR WRONG 205
DOOR AJAR
*FLIP-UP GLASS AJAR CIRCUIT OPEN 208
*FLIP-UP GLASS AJAR CIRCUIT SHORTED TO GROUND 209
*HOOD AJAR CIRCUIT OPEN 210
*HOOD AJAR CIRCUIT SHORTED TO GROUND- EXPORT ONLY 211
*LEFT FRONT DOOR AJAR CIRCUIT OPEN 212
*LEFT FRONT DOOR AJAR CIRCUIT SHORTED TO GROUND 213
*LEFT REAR DOOR AJAR CIRCUIT OPEN 214
*LEFT REAR DOOR AJAR CIRCUIT SHORTED TO GROUND 215
*RIGHT FRONT DOOR AJAR CIRCUIT OPEN 216
*RIGHT FRONT DOOR AJAR CIRCUIT SHORTED TO GROUND 217
*RIGHT REAR DOOR AJAR CIRCUIT OPEN 218
*RIGHT REAR DOOR AJAR CIRCUIT SHORTED TO GROUND 219
*TAILGATE AJAR CIRCUIT OPEN 220
iv
TABLE OF CONTENTS – Continued
*TAILGATE AJAR CIRCUIT SHORTED TO GROUND 221
ELECTRICALLY HEATED SYSTEMS
REAR DEFOGGER RELAY CONTROL CIRCUIT OPEN/SHORT TO GROUND 222
REAR DEFOGGER RELAY CONTROL CIRCUIT SHORT TO VOLTAGE 224
*REAR WINDOW DEFOGGER INOPERATIVE 226
EXTERIOR LIGHTING
FRONT FOG RELAY CIRCUIT HIGH 229
FRONT FOG RELAY CIRCUIT LOW 231
HEADLAMP SWITCH INPUT CIRCUIT HIGH 232
HEADLAMP SWITCH INPUT CIRCUIT LOW 234
HIGH BEAM RELAY CIRCUIT HIGH 236
LOW BEAM RELAY CIRCUIT HIGH 238
LOW BEAM RELAY CIRCUIT LOW 240
PARK LAMP RELAY CIRCUIT HIGH 241
PARK LAMP RELAY CIRCUIT LOW 243
REAR FOG RELAY CIRCUIT HIGH 244
REAR FOG RELAY CIRCUIT LOW 246
*LOW BEAM HEADLAMPS INOPERATIVE 247
INSTRUMENT CLUSTER
ABS LAMP CIRCUIT SHORT 249
ABS LAMP OPEN 249
AIRBAG LAMP CIRCUIT SHORT 249
AIRBAG LAMP OPEN 249
BRAKE LAMP CIRCUIT OPEN 249
BRAKE LAMP CIRCUIT SHORT 249
MIL LAMP CIRCUIT OPEN 249
MIL LAMP CIRCUIT SHORT 249
SEATBELT LAMP CIRCUIT OPEN 249
SEATBELT LAMP CIRCUIT SHORT 249
BRAKE FLUID SWITCH CIRCUIT OPEN 251
CLUSTER BUS TRANSMIT SHUTDOWN 253
CLUSTER WAKE UP OUTPUT HIGH 254
CLUSTER WAKE UP OUTPUT LOW 256
NO ABS BUS MESSAGES RECEIVED 258
NO BCM BUS MESSAGES RECEIVED 259
NO ORC BUS MESSAGES RECEIVED 260
NO PCI BUS MESSAGES RECEIVED 261
NO PCM BUS MESSAGES RECEIVED 263
NO SKIM BUS MESSAGES RECEIVED 264
TIRE SIZE NOT PROGRAMMED 265
VEHICLE SPEED SENSOR FAILURE 266
*4WD INDICATOR INACCURATE 270
*4WD INDICATOR INACCURATE – DIESEL ONLY 271
*ALL GAUGES INOPERATIVE 272
*ANY PCI BUS INDICATOR INOPERATIVE 274
*BRAKE INDICATOR ALWAYS ON 275
*BRAKE INDICATOR INOPERATIVE 277
*FUEL GAUGE INACCURATE 278
*INSTRUMENT CLUSTER INOPERATIVE 280
*LOW COOLANT INDICATOR ALWAYS ON – DIESEL ONLY 281
v
TABLE OF CONTENTS – Continued
*LOW COOLANT INDICATOR INOPERATIVE – DIESEL ONLY 282
*LOW WASH MESSAGE NOT OPERATING PROPERLY 283
*ONE GAUGE INOPERATIVE 285
*PANEL DIMMING INOPERATIVE 286
*SEAT BELT INDICATOR ALWAYS ON 289
*VTSS INDICATOR INOPERATIVE 290
INTERIOR LIGHTING
DIMMING LEVEL SWITCH INPUT CIRCUIT HIGH 291
DIMMING LEVEL SWITCH INPUT CIRCUIT LOW 293
*COURTESY LAMPS INOPERATIVE-ALL LAMPS 295
*COURTESY LAMPS INOPERATIVE-OVERHEAD LAMPS 296
*COURTESY LAMPS STAY ON AT ALL TIMES 297
POWER DOOR LOCKS/RKE
DOOR LOCK RELAY CONTROL CIRCUIT OPEN OR SHORT TO GROUND 299
DOOR LOCK RELAY CONTROL SHORT TO VOLTAGE 301
DOOR LOCK SWITCH OPEN OR SHORT TO VOLTAGE 303
DOOR LOCK SWITCH SHORT TO GROUND 307
DOOR UNLOCK RELAY CONTROL CIRCUIT OPEN OR SHORT TO GROUND 309
DOOR UNLOCK RELAY CONTROL SHORT TO VOLTAGE 311
DRIVER DOOR UNLOCK RELAY CONTROL CIRCUIT OPEN OR SHORT TO
GROUND 313
DRIVER DOOR UNLOCK RELAY CONTROL CIRCUIT SHORT TO VOLTAGE 315
LEFT CYLINDER LOCK SWITCH SHORT TO GROUND 317
RKE KEY FOB #1 BATTERY VOLTAGE LOW 319
RKE KEY FOB #2 BATTERY VOLTAGE LOW 320
RKE KEY FOB #3 BATTERY VOLTAGE LOW 321
RKE KEY FOB #4 BATTERY VOLTAGE LOW 322
RKE UNABLE TO ENTER PROGRAM MODE 323
TAILGATE CYLINDER LOCK SWITCH SHORT TO GROUND 324
TAILGATE LOCK MOTOR SHORT TO VOLTAGE 326
*ALL DOORS FAIL TO LOCK 328
*ALL PASSENGER DOORS FAIL TO LOCK AND UNLOCK 329
*ALL PASSENGER DOORS FAIL TO UNLOCK 330
*AUTO DOOR LOCKS INOPERATIVE 331
*DRIVER DOOR FAILS TO LOCK AND UNLOCK 332
*DRIVER DOOR FAILS TO UNLOCK 333
*FLIP-UP GLASS RELEASE INOPERATIVE 334
*ONE PASSENGER DOOR FAILS TO LOCK AND UNLOCK 337
*RKE INOPERATIVE 338
*RKE RANGE TO SHORT FROM ALL TRANSMITTERS 340
*TAILGATE CYLINDER LOCK SWITCH INOPERATIVE 341
*TAILGATE LOCK INOPERATIVE 342
VEHICLE THEFT/SECURITY
BCM MESSAGE NOT RECEIVED (EXPORT ONLY) 344
PRE-ARM TIMEOUT FAILURE (EXPORT ONLY) 344
HORN RELAY CONTROL CIRCUIT SHORT TO VOLTAGE 346
ITM – EEPROM FAILURE (EXPORT ONLY) 348
LOOPBACK FAILURE (EXPORT ONLY) 348
ITM – TRANSDUCER FAILURE (EXPORT ONLY) 349
ITM – VIN MISMATCH (EXPORT ONLY) 350
vi
TABLE OF CONTENTS – Continued
NO SERIAL COMMUNICATION (EXPORT ONLY) 351
SIREN COMMUNICATION FAILURE (EXPORT ONLY) 351
PCM MESSAGE NOT RECEIVED (EXPORT ONLY) 354
SIREN BATTERY HAS BEEN TAMPERED (EXPORT ONLY) 355
SIREN EEPROM FAILURE (EXPORT ONLY) 356
SIREN INTERNAL BATTERY (EXPORT ONLY) 356
SIREN ROM FAILURE (EXPORT ONLY) 356
*ALARM TRIPS ON ITS OWN 357
*DRIVER DOOR DOES NOT TRIP VTSS 358
*FLIP-UP GLASS DOES NOT TRIP VTSS 359
*HAZARD LAMPS INOPERATIVE WITH VTSS 360
*HEADLAMPS FAIL TO FLASH WITH VTSS 361
*HOOD DOES NOT TRIP VTSS (EXPORT ONLY) 362
*HORN FAILS TO SOUND WITH VTSS 363
*INTRUSION TRANSCEIVER MODULE SENSITIVITY (EXPORT ONLY) 364
*LEFT REAR DOOR DOES NOT TRIP VTSS 365
*PASSENGER DOOR DOES NOT TRIP VTSS 366
*RIGHT REAR DOOR DOES NOT TRIP VTSS 367
*TAILGATE DOES NOT TRIP VTSS 368
*VTSS DOES NOT DISARM WITH THE LEFT CYLINDER LOCK SWITCH 369
*VTSS WILL NOT ARM 371
WINDSHIELD WIPER & WASHER
WIPER HIGH/LOW RELAY OUTPUT CIRCUIT HIGH 372
WIPER HIGH/LOW RELAY OUTPUT CIRCUIT LOW 374
WIPER MODE SWITCH CIRCUIT HIGH 376
WIPER MODE SWITCH CIRCUIT LOW 378
WIPER ON/OFF RELAY OUTPUT CIRCUIT HIGH 380
WIPER ON/OFF RELAY OUTPUT CIRCUIT LOW 382
WIPER PARK SWITCH FAILURE 383
*FRONT WASHER PUMP INOPERATIVE 385
*FRONT WIPER LOW SPEED INOPERATIVE 387
VERIFICATION TESTS
VERIFICATION TESTS 389
8 0 COMPONENT LOCATIONS 395
8 1 AIRBAG SYSTEM 395
8 2 AUDIO 396
8 2 1 CD CHANGER 396
8 3 COMMUNICATION 397
8 3 1 BODY CONTROL MODULE AND JUNCTION BLOCK (JUNCTION
BLOCK MODULE) 397
8 3 2 POWERTRAIN CONTROL MODULE 397
8 3 3 TRANSMISSION CONTROL MODULE 397
8 4 INSTRUMENT CLUSTER 398
8 5 POWER DOOR LOCKS 398
8 5 1 TAILGATE LOCK MOTOR 398
8 5 2 TAILGATE CONNECTORS 399
8 5 3 FLIP-UP GLASS RELEASE 399
8 5 4 RKE MODULE 400
8 6 VEHICLE THEFT SECURITY SYSTEM 401
vii
TABLE OF CONTENTS – Continued
8 6 1 HOOD AJAR SWITCH (EXPORT) 401
8 6 2 SIREN (EXPORT) 402
9 0 CONNECTOR PINOUTS 403
A/C-HEATER CONTROL C2 403
AIRBAG CONTROL MODULE C1 (ORC C1) 403
AIRBAG CONTROL MODULE C2 (ORC C2) 403
AMBIENT TEMPERATURE SENSOR 404
AMBIENT TEMPERATURE SENSOR (SENSOR SIDE) 404
ANTENNA (EXCEPT EXPORT) 404
ANTENNA MODULE C1 (EXPORT) 404
ANTENNA MODULE C2 (EXPORT) 405
BODY CONTROL MODULE C1 405
BODY CONTROL MODULE C2 406
BODY CONTROL MODULE C3 (PREMIUM) 406
C202 406
C202 407
C311 407
C311 407
C313 407
C313 407
CD CHANGER 408
CLOCKSPRING C1 408
CLOCKSPRING C2 408
CLOCKSPRING C3 408
COMPASS MINI-TRIP COMPUTER (PREMIUM) 408
CONTROLLER ANTILOCK BRAKE 409
DATA LINK CONNECTOR 409
DRIVER AIRBAG SQUIB 1 410
DRIVER AIRBAG SQUIB 2 410
DRIVER DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) 410
DRIVER SEAT BELT SWITCH 410
DRIVER SEAT BELT TENSIONER 411
ENGINE CONTROL MODULE C1 (DIESEL) 412
ENGINE CONTROL MODULE C2 (DIESEL) 413
ENGINE COOLANT LEVEL SENSOR (DIESEL) 413
FLIP-UP GLASS RELEASE MOTOR 414
FLIP-UP GLASS RELEASE SWITCH 414
FRONT WIPER MOTOR 414
HAZARD SWITCH/COMBINATION FLASHER 414
HIGH NOTE HORN 415
HOOD AJAR SWITCH (EXCEPT BASE) 415
IGNITION SWITCH 415
INSTRUMENT CLUSTER 415
INTRUSION TRANSCEIVER MODULE (EXPORT) 416
FUSES (JB) 418
DEFOGGER RELAY 418
DOOR LOCK RELAY 419
DRIVER DOOR UNLOCK RELAY 419
FRONT FOG LAMP RELAY 419
HIGH BEAM RELAY 419
LOW BEAM RELAY 419
viii
TABLE OF CONTENTS – Continued
PARK LAMP RELAY 419
PASSENGER DOOR UNLOCK RELAY 419
REAR FOG LAMP RELAY 420
JUNCTION BLOCK BODY CONTROL MODULE-JB 420
JUNCTION BLOCK C1 421
JUNCTION BLOCK C2 422
JUNCTION BLOCK C3 423
LEFT COURTESY LAMP 424
LEFT CURTAIN AIRBAG SQUIB 424
LEFT CYLINDER LOCK SWITCH (LHD EXCEPT BASE) 424
LEFT DOOR LOCK SWITCH (EXCEPT BASE) 424
LEFT FOG LAMP 425
LEFT FRONT DOOR AJAR SWITCH (BASE) 425
LEFT FRONT DOOR SPEAKER (BASE) 425
LEFT FRONT DOOR SPEAKER (PREMIUM) 425
LEFT FRONT IMPACT SENSOR 425
LEFT HEADLAMP (EXCEPT EXPORT) 426
LEFT HEADLAMP (EXPORT) 426
LEFT INSTRUMENT PANEL SPEAKER 426
LEFT REAR DOOR AJAR SWITCH (BASE) 426
LEFT REAR DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) 427
LEFT REAR DOOR SPEAKER 427
LEFT REMOTE RADIO SWITCH (PREMIUM) 427
LEFT SIDE IMPACT AIRBAG CONTROL MODULE (LSIACM) 427
LOW NOTE HORN 428
MULTI-FUNCTION SWITCH C1 428
MULTI-FUNCTION SWITCH C2 428
PASSENGER AIRBAG 428
PASSENGER DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) 429
FUSES (DIESEL) 431
FUSES (GAS) 433
WIPER HIGH/LOW RELAY 433
WIPER ON/OFF RELAY 433
POWERTRAIN CONTROL MODULE C1 (2 4L) 434
POWERTRAIN CONTROL MODULE C1 (3 7L) 435
POWERTRAIN CONTROL MODULE C2 (GAS) 436
POWERTRAIN CONTROL MODULE C3 (GAS) 437
RADIO C1 438
RADIO C2 438
RADIO C3 438
RADIO CHOKE (MIDLINE/PREMIUM) 439
REAR WIPER MOTOR 439
RED BRAKE WARNING INDICATOR SWITCH 439
REMOTE KEYLESS ENTRY MODULE (EXCEPT BASE) 439
RIGHT COURTESY LAMP 440
RIGHT CURTAIN AIRBAG SQUIB 440
RIGHT DOOR LOCK SWITCH (EXCEPT BASE) 440
RIGHT FOG LAMP 440
RIGHT FRONT DOOR AJAR SWITCH (BASE) 441
RIGHT FRONT DOOR SPEAKER (BASE) 441
RIGHT FRONT DOOR SPEAKER (PREMIUM) 441
RIGHT FRONT IMPACT SENSOR 441
RIGHT HEADLAMP (EXCEPT EXPORT) 442
ix
TABLE OF CONTENTS – Continued
RIGHT HEADLAMP (EXPORT) 442
RIGHT INSTRUMENT PANEL SPEAKER 442
RIGHT REAR DOOR AJAR SWITCH (BASE) 442
RIGHT REAR DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) 443
RIGHT REAR DOOR SPEAKER 443
RIGHT REMOTE RADIO SWITCH (PREMIUM) 443
RIGHT SIDE IMPACT AIRBAG CONTROL MODULE (RSIACM) 443
SENTRY KEY IMMOBILIZER MODULE (EXCEPT BASE) 444
SIREN (EXPORT) 444
TAILGATE CYLINDER LOCK SWITCH 444
TAILGATE FLIP-UP AJAR SWITCH 444
TAILGATE LOCK MOTOR/ AJAR SWITCH 445
TRANSMISSION CONTROL MODULE 446
WASHER FLUID LEVEL SWITCH 447
WASHER PUMP 447
10 0 SCHEMATIC DIAGRAMS 449
10 1 AIRBAG SYSTEM 449
10 2 AUDIO 450
10 2 1 PREMIUM AUDIO SYSTEM 450
10 2 2 BASE AUDIO SYSTEM 451
10 2 3 CD CHANGER 452
10 2 4 REMOTE RADIO CONTROLS 452
10 3 CHIME 453
10 4 COMMUNICATION 454
10 4 1 INTER-MODULE AND DRB COMMUNICATION 454
10 4 2 PCM COMMUNICATION — GAS ONLY 455
10 4 3 ECM COMMUNICATION — DIESEL ONLY 455
10 5 DOOR AJAR SYSTEM 456
10 6 ELECTRICALLY HEATED SYSTEM 457
10 7 EXTERIOR LIGHTING 458
10 8 INSTRUMENT CLUSTER 459
10 9 INTERIOR LIGHTING 460
10 10 OVERHEAD CONSOLE 461
10 10 1 ELECTRONIC VEHICLE INFORMATION CENTER (EVIC) 461
10 11 POWER DOOR LOCKS 462
10 11 1 DOORS 462
10 11 2 TAILGATE AND FLIP-UP GLASS 463
10 12 VEHICLE THEFT SECURITY SYSTEM (VTSS) 464
10 12 1 VTSS 464
10 12 2 BASE – VTSS (EXPORT ONLY) 465
10 12 3 PREMIUM – VTSS (EXPORT ONLY) 466
10 13 WINDSHIELD WIPERS 467

DESCRIPTION:

Jeep 2003 KJ Body Service Manual – PDF DOWNLOAD

INTRODUCTION:

The procedures contained in this manual include all the specifications, instructions, and graphics needed to diagnose 2003 body system problems. The diagnostics in this manual are based on the failure condition or symptom being present at the time of diagnosis.
Please follow the recommendations below when choosing your diagnostic path.

1. First make sure the DRBIIIt is communicating with the appropriate modules; i.e., if the DRBIIIt displays a “No Response” 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 identified, 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 indicated a customer complaint.When repairs are required, refer to the appropriate service manual for the proper removal and repair procedure.
• Diagnostic procedures change every year. New diagnostic systems may be added: carryover systems may be enhanced. READ THIS MANUAL BEFORE TRYING TO DIAGNOSE A VEHICLE DIAGNOSTIC TROUBLE CODE. It is recommended that you review the entire manual to become familiar with all 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 back of the book and mail it back to us.

S.V 16/03/2025