sensor INFINITI QX4 2005 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2005, Model line: QX4, Model: INFINITI QX4 2005Pages: 3419, PDF Size: 80.18 MB
Page 1171 of 3419
DI-68
REAR SONAR SYSTEM
Revision: October 20052005 QX56
Component InspectionEKS00BDB
SONAR BUZZER
1. Disconnect the sonar buzzer connector.
2. Check continuity between buzzer connector M117 terminal (+)
and terminal (-)
REAR SONAR SYSTEM OFF SWITCH
Disconnect the rear sonar system OFF switch connector M116.
Check continuity between the following terminals.
REAR SONAR SYSTEM OFF INDICATOR
Disconnect the rear sonar system OFF switch connector M116, and
apply battery voltage (approx. 12V) to terminal 5. Check the rear
sonar system OFF indicator operation when terminal 6 is connected
to battery ground.
Removal and Installation of Rear Sonar SystemEKS00BDC
REAR SONAR SENSORS
Refer to EI-15, "Removal and Installation" for rear sonar sensor removal and installation procedures.
SONAR CONTROL UNIT
1. Remove luggage side finisher LH. Refer to EI-40, "LUGGAGE FLOOR TRIM" to gain access to sonar
control unit.
2. Disconnect electrical connector then remove sonar control unit. Refer to DI-58, "
Component Parts and
Harness Connector Location" .
3. Installation is in the reverse order of removal.(+) - (-) : Continuity should exist.
WKIA2024E
Rear sonar system OFF
switch Terminal to be inspected Continuity
Depressed
1 - 2Ye s
Released No
WKIA2025E
Terminal to be
inspectedCondition Operation
Rear sonar sys-
tem OFF switch5 Approx. 12V Rear sonar
system OFF
indicator lights 6 Ground
WKIA2026E
Page 1192 of 3419
EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
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EC
Revision: October 20052005 QX56 INDEX FOR DTC ........................................................ 8
DTC No. Index ......................................................... 8
Alphabetical Index .................................................. 12
PRECAUTIONS ........................................................ 16
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 16
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................... 16
Precaution .............................................................. 16
Wiring Diagrams and Trouble Diagnosis ................ 19
PREPARATION ......................................................... 20
Special Service Tools ............................................. 20
Commercial Service Tools ...................................... 22
ENGINE CONTROL SYSTEM .................................. 23
System Diagram ..................................................... 23
Multiport Fuel Injection (MFI) System .................... 24
Electronic Ignition (EI) System ............................... 26
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................... 27
AIR CONDITIONING CUT CONTROL ..................... 28
Input/Output Signal Chart ....................................... 28
System Description ................................................ 28
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ... 29
System Description ................................................ 29
Component Description .......................................... 30
CAN COMMUNICATION .......................................... 31
System Description ................................................ 31
EVAPORATIVE EMISSION SYSTEM ....................... 32
Description ............................................................. 32
Component Inspection ........................................... 35
Removal and Installation ........................................ 36
How to Detect Fuel Vapor Leakage ....................... 37
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ...................................................................... 39
System Description ................................................ 39
Diagnostic Procedure ............................................. 40
Component Inspection ........................................... 43
POSITIVE CRANKCASE VENTILATION ................. 45Description .............................................................. 45
Component Inspection ............................................ 45
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ........................................................................ 47
Description .............................................................. 47
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 48
Introduction ............................................................. 48
Two Trip Detection Logic ........................................ 48
Emission-related Diagnostic Information ................ 49
Malfunction Indicator Lamp (MIL) ........................... 64
OBD System Operation Chart ................................ 66
BASIC SERVICE PROCEDURE ............................... 72
Basic Inspection ..................................................... 72
Idle Speed and Ignition Timing Check .................... 77
Idle Mixture Ratio Adjustment ................................. 79
VIN Registration ..................................................... 90
Accelerator Pedal Released Position Learning ...... 90
Throttle Valve Closed Position Learning ................. 90
Idle Air Volume Learning ........................................ 91
Fuel Pressure Check .............................................. 93
TROUBLE DIAGNOSIS ............................................ 95
Trouble Diagnosis Introduction ............................... 95
DTC Inspection Priority Chart ...............................101
Fail-safe Chart ......................................................103
Symptom Matrix Chart ..........................................104
Engine Control Component Parts Location ..........108
Vacuum Hose Drawing .........................................114
Circuit Diagram .....................................................115
ECM Harness Connector Terminal Layout ...........117
ECM Terminals and Reference Value ...................117
CONSULT-II Function (ENGINE) ..........................126
Generic Scan Tool (GST) Function .......................139
CONSULT-II Reference Value in Data Monitor .....141
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................144
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .146
Description ............................................................146
Testing Condition ..................................................146
Inspection Procedure ............................................146
Diagnostic Procedure ...........................................147
Page 1193 of 3419
EC-2Revision: October 20052005 QX56 TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................156
Description ............................................................156
Diagnostic Procedure ...........................................156
POWER SUPPLY AND GROUND CIRCUIT ...........157
Wiring Diagram .....................................................157
Diagnostic Procedure ...........................................158
Ground Inspection ................................................162
DTC U1000, U1001 CAN COMMUNICATION LINE .163
Description ............................................................163
On Board Diagnosis Logic ....................................163
DTC Confirmation Procedure ...............................163
Wiring Diagram .....................................................164
Diagnostic Procedure ...........................................165
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .166
Description ............................................................166
CONSULT-II Reference Value in Data Monitor Mode
.166
On Board Diagnosis Logic ....................................166
DTC Confirmation Procedure ...............................167
Wiring Diagram .....................................................168
Diagnostic Procedure ...........................................171
Component Inspection ..........................................173
Removal and Installation ......................................173
DTC P0101 MAF SENSOR .....................................174
Component Description ........................................174
CONSULT-II Reference Value in Data Monitor Mode
.174
On Board Diagnosis Logic ....................................174
DTC Confirmation Procedure ...............................175
Overall Function Check ........................................176
Wiring Diagram .....................................................177
Diagnostic Procedure ...........................................178
Component Inspection ..........................................181
Removal and Installation ......................................182
DTC P0102, P0103 MAF SENSOR .........................183
Component Description ........................................183
CONSULT-II Reference Value in Data Monitor Mode
.183
On Board Diagnosis Logic ....................................183
DTC Confirmation Procedure ...............................184
Wiring Diagram .....................................................185
Diagnostic Procedure ...........................................186
Component Inspection ..........................................189
Removal and Installation ......................................190
DTC P0112, P0113 IAT SENSOR ...........................191
Component Description ........................................191
On Board Diagnosis Logic ....................................191
DTC Confirmation Procedure ...............................191
Wiring Diagram .....................................................192
Diagnostic Procedure ...........................................193
Component Inspection ..........................................194
Removal and Installation ......................................194
DTC P0117, P0118 ECT SENSOR ..........................195
Component Description ........................................195
On Board Diagnosis Logic ....................................195
DTC Confirmation Procedure ...............................196
Wiring Diagram .....................................................197
Diagnostic Procedure ...........................................198Component Inspection .......................................... 199
Removal and Installation ....................................... 200
DTC P0122, P0123 TP SENSOR ............................ 201
Component Description ........................................ 201
CONSULT-II Reference Value in Data Monitor Mode
. 201
On Board Diagnosis Logic .................................... 201
DTC Confirmation Procedure ................................ 202
Wiring Diagram ..................................................... 203
Diagnostic Procedure ............................................ 204
Component Inspection .......................................... 207
Removal and Installation ....................................... 207
DTC P0125 ECT SENSOR ...................................... 208
Component Description ........................................ 208
On Board Diagnosis Logic .................................... 208
DTC Confirmation Procedure ................................ 209
Diagnostic Procedure ............................................ 209
Component Inspection .......................................... 210
Removal and Installation ....................................... 210
DTC P0127 IAT SENSOR ........................................211
Component Description ........................................211
On Board Diagnosis Logic ....................................211
DTC Confirmation Procedure ................................211
Diagnostic Procedure ............................................ 212
Component Inspection .......................................... 213
Removal and Installation ....................................... 213
DTC P0128 THERMOSTAT FUNCTION ................. 214
On Board Diagnosis Logic .................................... 214
DTC Confirmation Procedure ................................ 214
Diagnostic Procedure ............................................ 214
Component Inspection .......................................... 215
Removal and Installation ....................................... 215
DTC P0138, P0158 HO2S2 ..................................... 216
Component Description ........................................ 216
CONSULT-II Reference Value in Data Monitor Mode
. 216
On Board Diagnosis Logic .................................... 216
DTC Confirmation Procedure ................................ 217
Wiring Diagram ..................................................... 218
Diagnostic Procedure ............................................ 221
Component Inspection .......................................... 223
Removal and Installation ....................................... 224
DTC P0139, P0159 HO2S2 ..................................... 225
Component Description ........................................ 225
CONSULT-II Reference Value in Data Monitor Mode
. 225
On Board Diagnosis Logic .................................... 225
DTC Confirmation Procedure ................................ 226
Overall Function Check ......................................... 226
Wiring Diagram ..................................................... 228
Diagnostic Procedure ............................................ 231
Component Inspection .......................................... 234
Removal and Installation ....................................... 235
DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION .............................................................. 236
On Board Diagnosis Logic .................................... 236
DTC Confirmation Procedure ................................ 236
Wiring Diagram ..................................................... 238
Diagnostic Procedure ............................................ 240
Page 1194 of 3419
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ECA
Revision: October 20052005 QX56 DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION .............................................................. 245
On Board Diagnosis Logic ................................... 245
DTC Confirmation Procedure ............................... 245
Wiring Diagram .................................................... 247
Diagnostic Procedure ........................................... 249
DTC P0181 FTT SENSOR ...................................... 253
Component Description ........................................ 253
On Board Diagnosis Logic ................................... 253
DTC Confirmation Procedure ............................... 253
Wiring Diagram .................................................... 255
Diagnostic Procedure ........................................... 256
Component Inspection ......................................... 258
Removal and Installation ...................................... 258
DTC P0182, P0183 FTT SENSOR ......................... 259
Component Description ........................................ 259
On Board Diagnosis Logic ................................... 259
DTC Confirmation Procedure ............................... 259
Wiring Diagram .................................................... 260
Diagnostic Procedure ........................................... 261
Component Inspection ......................................... 263
Removal and Installation ...................................... 263
DTC P0222, P0223 TP SENSOR ........................... 264
Component Description ........................................ 264
CONSULT-II Reference Value in Data Monitor Mode
. 264
On Board Diagnosis Logic ................................... 264
DTC Confirmation Procedure ............................... 265
Wiring Diagram .................................................... 266
Diagnostic Procedure ........................................... 267
Component Inspection ......................................... 270
Removal and Installation ...................................... 270
DTC P0300 - P0308 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 8 CYLINDER MISFIRE ..................... 271
On Board Diagnosis Logic ................................... 271
DTC Confirmation Procedure ............................... 271
Diagnostic Procedure ........................................... 272
DTC P0327, P0328, P0332, P0333 KS .................. 279
Component Description ........................................ 279
On Board Diagnosis Logic ................................... 279
DTC Confirmation Procedure ............................... 279
Wiring Diagram .................................................... 280
Diagnostic Procedure ........................................... 281
Component Inspection ......................................... 283
Removal and Installation ...................................... 283
DTC P0335 CKP SENSOR (POS) .......................... 284
Component Description ........................................ 284
CONSULT-II Reference Value in Data Monitor Mode
. 284
On Board Diagnosis Logic ................................... 284
DTC Confirmation Procedure ............................... 284
Wiring Diagram .................................................... 286
Diagnostic Procedure ........................................... 287
Component Inspection ......................................... 290
Removal and Installation ...................................... 290
DTC P0340 CMP SENSOR (PHASE) ..................... 291
Component Description ........................................ 291
On Board Diagnosis Logic ................................... 291
DTC Confirmation Procedure ............................... 291Wiring Diagram .....................................................293
Diagnostic Procedure ...........................................294
Component Inspection ..........................................297
Removal and Installation ......................................297
DTC P0420, P0430 THREE WAY CATALYST FUNC-
TION ........................................................................298
On Board Diagnosis Logic ....................................298
DTC Confirmation Procedure ...............................298
Overall Function Check ........................................299
Diagnostic Procedure ...........................................300
DTC P0441 EVAP CONTROL SYSTEM .................304
System Description ...............................................304
On Board Diagnosis Logic ....................................304
DTC Confirmation Procedure ...............................304
Overall Function Check ........................................305
Diagnostic Procedure ...........................................306
DTC P0442 EVAP CONTROL SYSTEM .................309
On Board Diagnosis Logic ....................................309
DTC Confirmation Procedure ...............................310
Diagnostic Procedure ...........................................311
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ......................318
Description ............................................................318
CONSULT-II Reference Value in Data Monitor Mode
.318
On Board Diagnosis Logic ....................................319
DTC Confirmation Procedure ...............................319
Wiring Diagram .....................................................320
Diagnostic Procedure ...........................................322
Component Inspection ..........................................323
Removal and Installation ......................................324
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE .....................................................................325
Component Description ........................................325
CONSULT-II Reference Value in Data Monitor Mode
.325
On Board Diagnosis Logic ....................................325
DTC Confirmation Procedure ...............................326
Wiring Diagram .....................................................327
Diagnostic Procedure ...........................................328
Component Inspection ..........................................330
DTC P0451 EVAP CONTROL SYSTEM PRESSURE
SENSOR .................................................................332
Component Description ........................................332
CONSULT-II Reference Value in Data Monitor Mode
.332
On Board Diagnosis Logic ....................................332
DTC Confirmation Procedure ...............................333
Diagnostic Procedure ...........................................333
Component Inspection ..........................................334
DTC P0452 EVAP CONTROL SYSTEM PRESSURE
SENSOR .................................................................335
Component Description ........................................335
CONSULT-II Reference Value in Data Monitor Mode
.335
On Board Diagnosis Logic ....................................335
DTC Confirmation Procedure ...............................336
Wiring Diagram .....................................................337
Page 1195 of 3419
EC-4Revision: October 20052005 QX56 Diagnostic Procedure ...........................................338
Component Inspection ..........................................340
DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR ..................................................................341
Component Description ........................................341
CONSULT-II Reference Value in Data Monitor Mode
.341
On Board Diagnosis Logic ....................................341
DTC Confirmation Procedure ...............................342
Wiring Diagram .....................................................343
Diagnostic Procedure ...........................................344
Component Inspection ..........................................348
DTC P0455 EVAP CONTROL SYSTEM .................349
On Board Diagnosis Logic ....................................349
DTC Confirmation Procedure ...............................350
Diagnostic Procedure ...........................................351
DTC P0456 EVAP CONTROL SYSTEM .................357
On Board Diagnosis Logic ....................................357
DTC Confirmation Procedure ...............................358
Overall Function Check ........................................359
Diagnostic Procedure ...........................................360
DTC P0460 FUEL LEVEL SENSOR .......................366
Component Description ........................................366
On Board Diagnosis Logic ....................................366
DTC Confirmation Procedure ...............................366
Diagnostic Procedure ...........................................367
Removal and Installation ......................................367
DTC P0461 FUEL LEVEL SENSOR .......................368
Component Description ........................................368
On Board Diagnosis Logic ....................................368
Overall Function Check ........................................368
Diagnostic Procedure ...........................................369
Removal and Installation ......................................369
DTC P0462, P0463 FUEL LEVEL SENSOR CIR-
CUIT ........................................................................370
Component Description ........................................370
On Board Diagnosis Logic ....................................370
DTC Confirmation Procedure ...............................370
Diagnostic Procedure ...........................................371
Removal and Installation ......................................371
DTC P0500 VSS ......................................................372
Description ............................................................372
On Board Diagnosis Logic ....................................372
DTC Confirmation Procedure ...............................372
Overall Function Check ........................................372
Diagnostic Procedure ...........................................373
DTC P0506 ISC SYSTEM .......................................374
Description ............................................................374
On Board Diagnosis Logic ....................................374
DTC Confirmation Procedure ...............................374
Diagnostic Procedure ...........................................375
DTC P0507 ISC SYSTEM .......................................376
Description ............................................................376
On Board Diagnosis Logic ....................................376
DTC Confirmation Procedure ...............................376
Diagnostic Procedure ...........................................377
DTC P0550 PSP SENSOR ......................................378
Component Description ........................................378
CONSULT-II Reference Value in Data Monitor Mode . 378
On Board Diagnosis Logic .................................... 378
DTC Confirmation Procedure ................................ 378
Wiring Diagram ..................................................... 379
Diagnostic Procedure ............................................ 380
Component Inspection .......................................... 382
Removal and Installation ....................................... 382
DTC P0605 ECM ..................................................... 383
Component Description ........................................ 383
On Board Diagnosis Logic .................................... 383
DTC Confirmation Procedure ................................ 383
Diagnostic Procedure ............................................ 384
DTC P1031, P1032, P1051, P1052 A/F SENSOR 1
HEATER ................................................................... 386
Description ............................................................ 386
CONSULT-II Reference Value in Data Monitor Mode
. 386
On Board Diagnosis Logic .................................... 386
DTC Confirmation Procedure ................................ 386
Wiring Diagram ..................................................... 387
Diagnostic Procedure ............................................ 390
Component Inspection .......................................... 392
Removal and Installation ....................................... 392
DTC P1065 ECM POWER SUPPLY ........................ 393
Component Description ........................................ 393
On Board Diagnosis Logic .................................... 393
DTC Confirmation Procedure ................................ 393
Wiring Diagram ..................................................... 394
Diagnostic Procedure ............................................ 395
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................. 397
Component Description ........................................ 397
On Board Diagnosis Logic .................................... 397
DTC Confirmation Procedure ................................ 397
Diagnostic Procedure ............................................ 398
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION .............................................................. 399
Description ............................................................ 399
On Board Diagnosis Logic .................................... 399
DTC Confirmation Procedure ................................ 399
Wiring Diagram ..................................................... 400
Diagnostic Procedure ............................................ 401
Component Inspection .......................................... 404
Removal and Installation ....................................... 404
DTC P1124, P1126 THROTTLE CONTROL MOTOR
RELAY ..................................................................... 405
Component Description ........................................ 405
CONSULT-II Reference Value in Data Monitor Mode
. 405
On Board Diagnosis Logic .................................... 405
DTC Confirmation Procedure ................................ 405
Wiring Diagram ..................................................... 407
Diagnostic Procedure ............................................ 408
DTC P1128 THROTTLE CONTROL MOTOR ......... 410
Component Description ........................................ 410
On Board Diagnosis Logic .................................... 410
DTC Confirmation Procedure ................................ 410
Wiring Diagram .....................................................411
Diagnostic Procedure ............................................ 412
Page 1196 of 3419
EC-5
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Revision: October 20052005 QX56 Component Inspection ......................................... 413
Removal and Installation ...................................... 414
DTC P1146, P1166 HO2S2 ..................................... 415
Component Description ........................................ 415
CONSULT-II Reference Value in Data Monitor Mode
. 415
On Board Diagnosis Logic ................................... 415
DTC Confirmation Procedure ............................... 416
Overall Function Check ........................................ 416
Wiring Diagram .................................................... 418
Diagnostic Procedure ........................................... 421
Component Inspection ......................................... 424
Removal and Installation ...................................... 425
DTC P1147, P1167 HO2S2 ..................................... 426
Component Description ........................................ 426
CONSULT-II Reference Value in Data Monitor Mode
. 426
On Board Diagnosis Logic ................................... 426
DTC Confirmation Procedure ............................... 427
Overall Function Check ........................................ 427
Wiring Diagram .................................................... 429
Diagnostic Procedure ........................................... 432
Component Inspection ......................................... 435
Removal and Installation ...................................... 436
DTC P1148, P1168 CLOSED LOOP CONTROL .... 437
On Board Diagnosis Logic ................................... 437
DTC P1211 TCS CONTROL UNIT ......................... 438
Description ........................................................... 438
On Board Diagnosis Logic ................................... 438
DTC Confirmation Procedure ............................... 438
Diagnostic Procedure ........................................... 438
DTC P1212 TCS COMMUNICATION LINE ............ 439
Description ........................................................... 439
On Board Diagnosis Logic ................................... 439
DTC Confirmation Procedure ............................... 439
Diagnostic Procedure ........................................... 439
DTC P1217 ENGINE OVER TEMPERATURE ....... 440
Description ........................................................... 440
CONSULT-II Reference Value in Data Monitor Mode
. 440
On Board Diagnosis Logic ................................... 441
Overall Function Check ........................................ 441
Wiring Diagram .................................................... 443
Diagnostic Procedure ........................................... 445
Main 12 Causes of Overheating ........................... 448
Component Inspection ......................................... 449
DTC P1225 TP SENSOR ........................................ 450
Component Description ........................................ 450
On Board Diagnosis Logic ................................... 450
DTC Confirmation Procedure ............................... 450
Diagnostic Procedure ........................................... 451
Removal and Installation ...................................... 451
DTC P1226 TP SENSOR ........................................ 452
Component Description ........................................ 452
On Board Diagnosis Logic ................................... 452
DTC Confirmation Procedure ............................... 452
Diagnostic Procedure ........................................... 453
Removal and Installation ...................................... 453
DTC P1229 SENSOR POWER SUPPLY ................ 454On Board Diagnosis Logic ....................................454
DTC Confirmation Procedure ...............................454
Wiring Diagram .....................................................455
Diagnostic Procedure ...........................................456
DTC P1271, P1281 A/F SENSOR 1 .......................459
Component Description ........................................459
CONSULT-II Reference Value in Data Monitor Mode
.459
On Board Diagnosis Logic ....................................459
DTC Confirmation Procedure ...............................459
Wiring Diagram .....................................................461
Diagnostic Procedure ...........................................464
Removal and Installation ......................................467
DTC P1272, P1282 A/F SENSOR 1 .......................468
Component Description ........................................468
CONSULT-II Reference Value in Data Monitor Mode
.468
On Board Diagnosis Logic ....................................468
DTC Confirmation Procedure ...............................468
Wiring Diagram .....................................................470
Diagnostic Procedure ...........................................473
Removal and Installation ......................................476
DTC P1273, P1283 A/F SENSOR 1 .......................477
Component Description ........................................477
CONSULT-II Reference Value in Data Monitor Mode
.477
On Board Diagnosis Logic ....................................477
DTC Confirmation Procedure ...............................477
Wiring Diagram .....................................................479
Diagnostic Procedure ...........................................482
Removal and Installation ......................................486
DTC P1274, P1284 A/F SENSOR 1 .......................487
Component Description ........................................487
CONSULT-II Reference Value in Data Monitor Mode
.487
On Board Diagnosis Logic ....................................487
DTC Confirmation Procedure ...............................487
Wiring Diagram .....................................................489
Diagnostic Procedure ...........................................492
Removal and Installation ......................................496
DTC P1276, P1286 A/F SENSOR 1 .......................497
Component Description ........................................497
CONSULT-II Reference Value in Data Monitor Mode
.497
On Board Diagnosis Logic ....................................497
DTC Confirmation Procedure ...............................497
Overall Function Check ........................................498
Wiring Diagram .....................................................500
Diagnostic Procedure ...........................................503
Removal and Installation ......................................506
DTC P1278, P1288 A/F SENSOR 1 .......................507
Component Description ........................................507
CONSULT-II Reference Value in Data Monitor Mode
.507
On Board Diagnosis Logic ....................................507
DTC Confirmation Procedure ...............................508
Wiring Diagram .....................................................510
Diagnostic Procedure ...........................................513
Removal and Installation ......................................518
Page 1197 of 3419
EC-6Revision: October 20052005 QX56 DTC P1279, P1289 A/F SENSOR 1 ........................519
Component Description ........................................519
CONSULT-II Reference Value in Data Monitor Mode
.519
On Board Diagnosis Logic ....................................519
DTC Confirmation Procedure ...............................520
Wiring Diagram .....................................................522
Diagnostic Procedure ...........................................525
Removal and Installation ......................................530
DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ...............................531
Description ............................................................531
CONSULT-II Reference Value in Data Monitor Mode
.531
On Board Diagnosis Logic ....................................532
DTC Confirmation Procedure ...............................532
Wiring Diagram .....................................................533
Diagnostic Procedure ...........................................535
Component Inspection ..........................................538
Removal and Installation ......................................538
DTC P1446 EVAP CANISTER VENT CONTROL
VALVE .....................................................................539
Component Description ........................................539
CONSULT-II Reference Value in Data Monitor Mode
.539
On Board Diagnosis Logic ....................................539
DTC Confirmation Procedure ...............................540
Wiring Diagram .....................................................541
Diagnostic Procedure ...........................................542
Component Inspection ..........................................543
DTC P1564 ICC STEERING SWITCH ....................545
Component Description ........................................545
CONSULT-II Reference Value in Data Monitor Mode
.545
On Board Diagnosis Logic ....................................545
DTC Confirmation Procedure ...............................546
Wiring Diagram .....................................................547
Diagnostic Procedure ...........................................548
Component Inspection ..........................................551
DTC P1564 ASCD STEERING SWITCH ................552
Component Description ........................................552
CONSULT-II Reference Value in Data Monitor Mode
.552
On Board Diagnosis Logic ....................................552
DTC Confirmation Procedure ...............................553
Wiring Diagram .....................................................554
Diagnostic Procedure ...........................................555
Component Inspection ..........................................558
DTC P1568 ICC FUNCTION ...................................559
On Board Diagnosis Logic ....................................559
DTC Confirmation Procedure ...............................559
Diagnostic Procedure ...........................................559
DTC P1572 ICC BRAKE SWITCH ..........................560
Component Description ........................................560
CONSULT-II Reference Value in Data Monitor Mode
.560
On Board Diagnosis Logic ....................................560
DTC Confirmation Procedure ...............................561
Wiring Diagram .....................................................562Diagnostic Procedure ............................................ 563
Component Inspection .......................................... 567
DTC P1572 ASCD BRAKE SWITCH ...................... 569
Component Description ........................................ 569
CONSULT-II Reference Value in Data Monitor Mode
. 569
On Board Diagnosis Logic .................................... 569
DTC confirmation Procedure ................................ 570
Wiring Diagram ..................................................... 571
Diagnostic Procedure ............................................ 572
Component Inspection .......................................... 576
DTC P1574 ICC VEHICLE SPEED SENSOR ......... 577
Component Description ........................................ 577
On Board Diagnosis Logic .................................... 577
DTC Confirmation Procedure ................................ 577
Diagnostic Procedure ............................................ 578
DTC P1574 ASCD VEHICLE SPEED SENSOR ..... 579
Component Description ........................................ 579
On Board Diagnosis Logic .................................... 579
DTC Confirmation Procedure ................................ 579
Diagnostic Procedure ............................................ 580
DTC P1706 PNP SWITCH ....................................... 581
Component Description ........................................ 581
CONSULT-II Reference Value in Data Monitor Mode
. 581
On Board Diagnosis Logic .................................... 581
DTC Confirmation Procedure ................................ 581
Overall Function Check ......................................... 582
Wiring Diagram ..................................................... 583
Diagnostic Procedure ............................................ 584
DTC P1805 BRAKE SWITCH ................................. 586
Description ............................................................ 586
CONSULT-II Reference Value in Data Monitor Mode
. 586
On Board Diagnosis Logic .................................... 586
DTC Confirmation Procedure ................................ 586
Wiring Diagram ..................................................... 587
Diagnostic Procedure ............................................ 588
Component Inspection .......................................... 590
DTC P2122, P2123 APP SENSOR ......................... 591
Component Description ........................................ 591
CONSULT-II Reference Value in Data Monitor Mode
. 591
On Board Diagnosis Logic .................................... 591
DTC Confirmation Procedure ................................ 592
Wiring Diagram ..................................................... 593
Diagnostic Procedure ............................................ 594
Component Inspection .......................................... 596
Removal and Installation ....................................... 596
DTC P2127, P2128 APP SENSOR ......................... 597
Component Description ........................................ 597
CONSULT-II Reference Value in Data Monitor Mode
. 597
On Board Diagnosis Logic .................................... 597
DTC Confirmation Procedure ................................ 598
Wiring Diagram ..................................................... 599
Diagnostic Procedure ............................................ 600
Component Inspection .......................................... 603
Removal and Installation ....................................... 603
Page 1198 of 3419
EC-7
C
D
E
F
G
H
I
J
K
L
M
ECA
Revision: October 20052005 QX56 DTC P2135 TP SENSOR ........................................ 604
Component Description ........................................ 604
CONSULT-II Reference Value in Data Monitor Mode
. 604
On Board Diagnosis Logic ................................... 604
DTC Confirmation Procedure ............................... 605
Wiring Diagram .................................................... 606
Diagnostic Procedure ........................................... 607
Component Inspection ......................................... 610
Removal and Installation ...................................... 610
DTC P2138 APP SENSOR ...................................... 611
Component Description ......................................... 611
CONSULT-II Reference Value in Data Monitor Mode
.. 611
On Board Diagnosis Logic .................................... 611
DTC Confirmation Procedure ............................... 612
Wiring Diagram .................................................... 613
Diagnostic Procedure ........................................... 614
Component Inspection ......................................... 618
Removal and Installation ...................................... 618
IGNITION SIGNAL .................................................. 619
Component Description ........................................ 619
Wiring Diagram .................................................... 620
Diagnostic Procedure ........................................... 625
Component Inspection ......................................... 629
Removal and Installation ...................................... 630
INJECTOR CIRCUIT ............................................... 631
Component Description ........................................ 631
CONSULT-II Reference Value in Data Monitor Mode
. 631
Wiring Diagram .................................................... 632
Diagnostic Procedure ........................................... 633
Component Inspection ......................................... 636
Removal and Installation ...................................... 636
FUEL PUMP CIRCUIT ............................................ 637
Description ........................................................... 637
CONSULT-II Reference Value in Data Monitor Mode
. 637
Wiring Diagram .................................................... 638
Diagnostic Procedure ........................................... 639
Component Inspection ......................................... 642
Removal and Installation ...................................... 642
REFRIGERANT PRESSURE SENSOR ................. 643
Component Description ........................................ 643Wiring Diagram .....................................................644
Diagnostic Procedure ...........................................645
Removal and Installation ......................................647
ELECTRICAL LOAD SIGNAL ................................648
Description ............................................................648
CONSULT-II Reference Value in Data Monitor Mode
.648
Diagnostic Procedure ...........................................648
ICC BRAKE SWITCH .............................................649
Component Description ........................................649
CONSULT-II Reference Value in Data Monitor Mode
.649
Wiring Diagram .....................................................650
Diagnostic Procedure ...........................................651
Component Inspection ..........................................656
ASCD BRAKE SWITCH .........................................657
Component Description ........................................657
CONSULT-II Reference Value in Data Monitor Mode
.657
Wiring Diagram .....................................................658
Diagnostic Procedure ...........................................659
Component Inspection ..........................................663
ASCD INDICATOR ..................................................664
Component Description ........................................664
CONSULT-II Reference Value in Data Monitor Mode
.664
Wiring Diagram .....................................................665
Diagnostic Procedure ...........................................666
MIL AND DATA LINK CONNECTOR ......................667
Wiring Diagram .....................................................667
SERVICE DATA AND SPECIFICATIONS (SDS) ....669
Fuel Pressure .......................................................669
Idle Speed and Ignition Timing .............................669
Calculated Load Value ..........................................669
Mass Air Flow Sensor ...........................................669
Intake Air Temperature Sensor .............................669
Engine Coolant Temperature Sensor ...................669
A/F Sensor 1 Heater .............................................669
Heated Oxygen sensor 2 Heater ..........................669
Crankshaft Position Sensor (POS) .......................669
Camshaft Position Sensor (PHASE) ....................669
Throttle Control Motor ...........................................669
Injector ..................................................................670
Fuel Pump ............................................................670
Page 1199 of 3419
EC-8Revision: October 2005
INDEX FOR DTC
2005 QX56
INDEX FOR DTCPFP:00024
DTC No. IndexUBS00KYY
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-163, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*
2ECM*3
U1000
1000*4CAN COMM CIRCUITEC-163
U1001
1001*4CAN COMM CIRCUITEC-163
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.—
P0037 0037 HO2S2 HTR (B1)EC-166
P0038 0038 HO2S2 HTR (B1)EC-166
P0057 0057 HO2S2 HTR (B2)EC-166
P0058 0058 HO2S2 HTR (B2)EC-166
P0101 0101 MAF SEN/CIRCUITEC-174
P0102 0102 MAF SEN/CIRCUITEC-183
P0103 0103 MAF SEN/CIRCUITEC-183
P0112 0112 IAT SEN/CIRCUITEC-191
P0113 0113 IAT SEN/CIRCUITEC-191
P0117 0117 ECT SEN/CIRCUITEC-195
P0118 0118 ECT SEN/CIRCUITEC-195
P0122 0122 TP SEN 2/CIRCEC-201
P0123 0123 TP SEN 2/CIRCEC-201
P0125 0125 ECT SENSOREC-208
P0127 0127 IAT SENSOREC-211
P0128 0128 THERMSTAT FNCTNEC-214
P0138 0138 HO2S2 (B1)EC-216
P0139 0139 HO2S2 (B1)EC-225
P0158 0158 HO2S2 (B2)EC-216
P0159 0159 HO2S2 (B2)EC-225
P0171 0171 FUEL SYS-LEAN-B1EC-236
P0172 0172 FUEL SYS-RICH-B1EC-245
P0174 0174 FUEL SYS-LEAN-B2EC-236
P0175 0175 FUEL SYS-RICH-B2EC-245
P0181 0181 FTT SENSOREC-253
P0182 0182 FTT SEN/CIRCUITEC-259
P0183 0183 FTT SEN/CIRCUITEC-259
P0222 0222 TP SEN 1/CIRCEC-264
P0223 0223 TP SEN 1/CIRCEC-264
P0300 0300 MULTI CYL MISFIREEC-271
P0301 0301 CYL 1 MISFIREEC-271
P0302 0302 CYL 2 MISFIREEC-271
P0303 0303 CYL 3 MISFIREEC-271
Page 1200 of 3419
INDEX FOR DTC
EC-9
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56P0304 0304 CYL 4 MISFIREEC-271
P0305 0305 CYL 5 MISFIREEC-271
P0306 0306 CYL 6 MISFIREEC-271
P0307 0307 CYL 7 MISFIREEC-271
P0308 0308 CYL 8 MISFIREEC-271
P0327 0327 KNOCK SEN/CIRC-B1EC-279
P0328 0328 KNOCK SEN/CIRC-B1EC-279
P0332 0332 KNOCK SEN/CIRC-B2EC-279
P0333 0333 KNOCK SEN/CIRC-B2EC-279
P0335 0335 CKP SEN/CIRCUITEC-284
P0340 0340 CMP SEN/CIRC-B1EC-291
P0420 0420 TW CATALYST SYS-B1EC-298
P0430 0430 TW CATALYST SYS-B2EC-298
P0441 0441 EVAP PURG FLOW/MONEC-304
P0442 0442 EVAP SMALL LEAKEC-309
P0444 0444 PURG VOLUME CONT/VEC-318
P0445 0445 PURG VOLUME CONT/VEC-318
P0447 0447 VENT CONTROL VALVEEC-325
P0451 0451 EVAP SYS PRES SENEC-332
P0452 0452 EVAP SYS PRES SENEC-335
P0453 0453 EVAP SYS PRES SENEC-341
P0455 0455 EVAP GROSS LEAKEC-349
P0456 0456 EVAP VERY SML LEAKEC-357
P0460 0460 FUEL LEV SEN SLOSHEC-366
P0461 0461 FUEL LEVEL SENSOREC-368
P0462 0462 FUEL LEVL SEN/CIRCEC-370
P0463 0463 FUEL LEVL SEN/CIRCEC-370
P0500 0500
VEH SPEED SEN/CIRC*5EC-372
P0506 0506 ISC SYSTEMEC-374
P0507 0507 ISC SYSTEMEC-376
P0550 0550 PW ST P SEN/CIRCEC-378
P0605 0605 ECMEC-383
P0700 0700 TCMAT- 1 0 3
P0705 0705 PNP SW/CIRCAT- 1 0 4
P0710 0710 ATF TEMP SEN/CIRCAT- 1 2 6
P0720 0720
VEH SPD SEN/CIR AT*5AT- 1 0 8
P0740 0740 TCC SOLENOID/CIRCAT - 11 5
P0744 0744 A/T TCC S/V FNCTNAT - 11 7
P0745 0745 L/PRESS SOL/CIRCAT - 11 9
P1031 1031 A/F SEN1 HTR (B1)EC-386
P1032 1032 A/F SEN1 HTR (B1)EC-386
P1051 1051 A/F SEN1 HTR (B2)EC-386
DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*
2ECM*3