Nissan XTrail T30 2005 User Manual
ENGINE CONTROL SYSTEM
B ENGINE
A
EC
SECTION EC
ENGINE CONTROL SYSTEM
CONTENTS
INDEX FOR DTC ........................................................ 8
DTC No. Index ......................................................... 8
Alphabetical Index ...................................................11
PRECAUTIONS ........................................................ 14
Precautions for Supplemental Rest raint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 14
On Board Diagnostic (OBD) System of Engine and
A/T ............................ ............. ............. ............. ....... 14
Precaution ...................... ........................................ 14
Wiring Diagrams and Trouble Diagnosis ................ 17
PREPARATION ......................................................... 18
Special Service Tools ............................................. 18
Commercial Service Tools ...................................... 19
ENGINE CONTROL SYSTEM .................................. 21
System Diagram ..................................................... 21
Multiport Fuel Injection (MFI) System .................... 22
Electronic Ignition (EI) System ............................... 24
Fuel Cut Control (at No Load and High Engine
Speed) ...................... ............. ............. ............. ....... 25
AIR CONDITIONING CUT CONTROL ..................... 26
Input/Output Signal Chart ................................ ....... 26
AUTOMA TIC SPEED CONTROL DEVICE (ASCD) ... 27
System Description ................................................ 27
Component Description .......................................... 28
CAN COMMUNICATION .......................................... 29
System Description ................................................ 29
EV APORATIVE EMISSION SYSTEM ....................... 30
Description ............................................................. 30
Component Inspection ........................................... 33
Removal and Installation ........................................ 34
How to Detect Fuel Vapor Leakage ....................... 34
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ..................................... ...... ....... ...... ....... ....... 37
System Description ................................................ 37
Diagnostic Procedure ............................................. 38
Component Inspection ........................................... 41
POSITIVE CRANKCASE VENTILATION ................. 44
Description ............................................................. 44
Component Inspection ........................................... 44
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-
NATS) ............................. ........................................... 46
Description ................... ...... ....... ...... ........................46
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............47
Introduction .................. ....................................... ....47
Two Trip Detection Logic ....................... ...... ...........47
Emission-Related Diagnostic Information ...............48
Malfunction Indicator Lamp (MIL) ...........................61
OBD System Operation Chart ................................65
BASIC SERVICE PROCEDURE ........................... .... 70
Basic Inspection ..................................................... 70
Idle Speed and Ignition Timing Check ....................75
Idle Mixture Ratio Adjustment .................................77
VIN Registration ..................................................... 87
Accelerator Pedal Released Pos i tio n Lear nin g ......88
Throttle Valve Closed Position Learning .................88
Idle Air Volume Learning ........................................88
Fuel Pressure Check ..............................................90
TROUBLE DIAGNOSIS ............................................94
Trouble Diagnosis Introduction . ..............................94
DTC Inspection Priority Chart ...............................100
Fail-Safe Chart ............................... ....... ...... ....... ..102
Symptom Matrix Chart ..........................................103
Engine Control Component Parts Location ..........107
Vacuum Hose Drawing .......................... ...... ....... ..112
Circuit Diagram .....................................................113
ECM Harness Connector Terminal Layout ...........115
ECM Terminals and Reference Value ...................115
CONSULT- II Func tio n (ENGI NE) ..........................123
Generic Scan Tool (GST) Function .......................136
CONSULT-II Reference Value in Data Monitor .....138
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................142
TROUBLE DIAGNOSIS - SPECIFICA TION V ALUE .144
Description ................... ...... ....... ...... ......................144
Testing Condition ..................................................144
Inspection Procedure ............................................144
Diagnostic Procedure ...........................................145
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .............................. .........................................154
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Description ................ .......................... ..................154
Diagnostic Procedure ...........................................154
POWER SUPPLY AND GROUND CIRCUIT ...........155
Wiring Diagram .....................................................155
Diagnostic Procedure ...........................................156
Component Inspection ..........................................162
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 P0011 IVT CONTROL .....................................166
Description ................ .......................... ..................166
CONSULT-II Reference Value in Data Monitor Mode
.166
On Board Diagnosis Logic ....................................167
DTC Confirmation Procedure ................... ....... .....167
Diagnostic Procedure ...........................................168
Component Inspection ..........................................169
Removal and Installation ......................................169
DTC P0031, P0032 HO2S1 HEATER .....................170
Description ................ .......................... ..................170
CONSULT-II Reference Value in Data Monitor Mode
.170
On Board Diagnosis Logic ....................................170
DTC Confirmation Procedure ................... ....... .....171
Wiring Diagram .....................................................172
Diagnostic Procedure ...........................................173
Component Inspection ..........................................175
Removal and Installation ......................................175
DTC P0037, P0038 HO2S2 HEATER .....................176
Description ................ .......................... ..................176
CONSULT-II Reference Value in Data Monitor Mode
.176
On Board Diagnosis Logic ....................................176
DTC Confirmation Procedure ................... ....... .....177
Wiring Diagram .....................................................178
Diagnostic Procedure ...........................................179
Component Inspection ..........................................181
Removal and Installation ......................................181
DTC P0101 MAF SENSOR .....................................182
Component Description ........................................182
CONSULT-II Reference Value in Data Monitor Mode
.182
On Board Diagnosis Logic ....................................182
DTC Confirmation Procedure ................... ....... .....182
Overall Function Check ........................................184
Wiring Diagram .....................................................185
Diagnostic Procedure ...........................................186
Component Inspection ..........................................189
Removal and Installation ......................................190
DTC P0102, P0103 MAF SENSOR .........................191
Component Description ........................................191
CONSULT-II Reference Value in Data Monitor Mode
.191
On Board Diagnosis Logic ....................................191
DTC Confirmation Procedure ................... ....... .....191
Wiring Diagram ................................................... ..193
Diagnostic Procedure ............................................194
Component Inspection ..........................................197
Removal and Installation .......................................198
DTC P0112, P0113 IAT SENSOR ............................199
Component Description ........................................199
On Board Diagnosis Logic ....................................199
DTC Confirmation Procedure ................................199
Wiring Diagram ................................................... ..201
Diagnostic Procedure ............................................202
Component Inspection ..........................................204
Removal and Installation .......................................204
DTC P0117, P0118 ECT SENSOR ..........................205
Component Description ........................................205
On Board Diagnosis Logic ....................................205
DTC Confirmation Procedure ................................206
Wiring Diagram ................................................... ..207
Diagnostic Procedure ............................................208
Component Inspection ..........................................210
Removal and Installation .......................................210
DTC P0122, P0123 TP SENSOR ............................211
Component Description ........................................211
CONSULT-II Reference Value in Data Monitor Mode
.211
On Board Diagnosis Logic ....................................211
DTC Confirmation Procedure ................................212
Wiring Diagram ................................................... ..213
Diagnostic Procedure ............................................215
Component Inspection ..........................................218
Remove and Installation .......................................218
DTC P0125 ECT SENSOR ......................................219
Description ............................................................219
On Board Diagnosis Logic ....................................219
DTC Confirmation Procedure ................................219
Diagnostic Procedure ............................................220
Component Inspection ..........................................221
Removal and Installation .......................................221
DTC P0127 IAT SENSOR ........................................222
Component Description ........................................222
On Board Diagnosis Logic ....................................222
DTC Confirmation Procedure ................................222
Diagnostic Procedure ............................................223
Component Inspection ..........................................224
Removal and Installation .......................................224
DTC P0128 THERMOSTAT FUNCTION .................225
On Board Diagnosis Logic ....................................225
DTC Confirmation Procedure ................................225
Diagnostic Procedure ............................................225
Component Inspection ..........................................226
Removal and Installation .......................................226
DTC P0132 HO2S1 .................................................227
Component Description ........................................227
CONSULT-II Reference Value in Data Monitor Mode
.227
On Board Diagnosis Logic ....................................227
DTC Confirmation Procedure ................................228
Wiring Diagram ................................................... ..229
Diagnostic Procedure ............................................230
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EC-2
Component Inspection ......................................... 232
Removal and Installation ...................................... 233
DTC P0133 HO2S1 ................................................. 234
Component Description ........................................ 234
CONSULT-II Reference Value in Data Monitor Mode
. 234
On Board Diagnosis Logic ................................... 234
DTC Confirmation Procedure ............................... 235
Overall Function Check ........................................ 236
Wiring Diagram .................................................... 237
Diagnostic Procedure ........................................... 238
Component Inspection ......................................... 242
Removal and Installation ...................................... 243
DTC P0134 HO2S1 ................................................. 244
Component Description ........................................ 244
CONSULT-II Reference Value in Data Monitor Mode
. 244
On Board Diagnosis Logic ................................... 244
DTC Confirmation Procedure ............................... 245
Overall Function Check ........................................ 246
Wiring Diagram .................................................... 247
Diagnostic Procedure ........................................... 248
Component Inspection ......................................... 250
Removal and Installation ...................................... 251
DTC P0138 HO2S2 ................................................. 252
Component Description ........................................ 252
CONSULT-II Reference Value in Data Monitor Mode
. 252
On Board Diagnosis Logic ................................... 252
DTC Confirmation Procedure ............................... 252
Wiring Diagram .................................................... 254
Diagnostic Procedure ........................................... 255
Component Inspection ......................................... 257
Removal and Installation ...................................... 258
DTC P0139 HO2S2 ................................................. 259
Component Description ........................................ 259
CONSULT-II Reference Value in Data Monitor Mode
. 259
On Board Diagnosis Logic ................................... 259
DTC Confirmation Procedure ............................... 260
Overall Function Check ........................................ 260
Wiring Diagram .................................................... 262
Diagnostic Procedure ........................................... 263
Component Inspection ......................................... 265
Removal and Installation ...................................... 266
DTC P0171 FUEL INJECTION SYSTEM FUNCTION . 267
On Board Diagnosis Logic ................................... 267
DTC Confirmation Procedure ............................... 267
Wiring Diagram .................................................... 269
Diagnostic Procedure ........................................... 270
DTC P0172 FUEL INJECTION SYSTEM FUNCTION . 274
On Board Diagnosis Logic ................................... 274
DTC Confirmation Procedure ............................... 274
Wiring Diagram .................................................... 276
Diagnostic Procedure ........................................... 277
DTC P0181 FTT SENSOR ...................................... 280
Component Description ........................................ 280
On Board Diagnosis Logic ................................... 280
DTC Confirmation Procedure ............................... 280
Wiring Diagram .....................................................282
Diagnostic Procedure ...........................................283
Component Inspection ..........................................285
Removal and Installation ......................................285
DTC P0182, P0183 FTT SENSOR ........... ...... ....... ..286
Component Description ........................................286
On Board Diagnosis Logic ....................................286
DTC Confirmation Procedure ...............................286
Wiring Diagram .....................................................287
Diagnostic Procedure ...........................................288
Component Inspection ..........................................290
Removal and Installation ......................................290
DTC P0222, P0223 TP SENSOR ...... ....... ...... ....... ..291
Component Description ........................................291
CONSULT-II Reference Value in Data Monitor Mode
.291
On Board Diagnosis Logic ....................................291
DTC Confirmation Procedure ...............................292
Wiring Diagram .....................................................293
Diagnostic Procedure ...........................................295
Component Inspection ..........................................298
Remove and Installation .......................................298
DTC P0300 - P0304 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 4 CYLINDER MISFIRE .....................299
On Board Diagnosis Logic ....................................299
DTC Confirmation Procedure ...............................299
Diagnostic Procedure ...........................................300
DTC P0327, P0328 KS ..................... ....... ...... ....... ..306
Component Description ........................................306
On Board Diagnosis Logic ....................................306
DTC Confirmation Procedure ...............................306
Wiring Diagram .....................................................307
Diagnostic Procedure ...........................................308
Component Inspection ..........................................310
Removal and Installation ......................................310
DTC P0335 CKP SENSOR (POS) ........................ ..311
Component Description ........................................311
CONSULT-II Reference Value in Data Monitor Mode
.311
On Board Diagnosis Logic ....................................311
DTC Confirmation Procedure ...............................312
Wiring Diagram .....................................................313
Diagnostic Procedure ...........................................315
Component Inspection ..........................................318
Removal and Installation ......................................318
DTC P0340 CMP SENSOR (PHASE) ............ ....... ..319
Component Description ........................................319
On Board Diagnosis Logic ....................................319
DTC Confirmation Procedure ...............................320
Wiring Diagram .....................................................321
Diagnostic Procedure ...........................................322
Component Inspection ..........................................325
Removal and Installation ......................................326
DTC P0420 THREE WAY CATALYST FUNCTION . 32 7
On Board Diagnosis Logic ....................................327
DTC Confirmation Procedure ...............................327
Overall Function Check ........................................328
Diagnostic Procedure ...........................................329
DTC P0441 EVAP CONTROL SYSTEM .. ...... ....... ..332
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System Description ...............................................332
On Board Diagnosis Logic ....................................332
DTC Confirmation Procedure ................... ....... .....333
Overall Function Check ........................................333
Diagnostic Procedure ...........................................334
DTC P0442 EVAP CONTROL SYSTEM .................338
On Board Diagnosis Logic ....................................338
DTC Confirmation Procedure ................... ....... .....339
Diagnostic Procedure ...........................................341
Component Inspection ..........................................347
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ......................348
Description ................ .......................... ..................348
CONSULT-II Reference Value in Data Monitor Mode
.348
On Board Diagnosis Logic ....................................349
DTC Confirmation Procedure ................... ....... .....349
Wiring Diagram .....................................................350
Diagnostic Procedure ...........................................352
Component Inspection ..........................................353
Removal and Installation ......................................354
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE .....................................................................355
Component Description ........................................355
CONSULT-II Reference Value in Data Monitor Mode
.355
On Board Diagnosis Logic ....................................355
DTC Confirmation Procedure ................... ....... .....356
Wiring Diagram .....................................................357
Diagnostic Procedure ...........................................358
Component Inspection ..........................................360
DTC P0451 EVAP CONTROL SYSTEM PRESSURE
SENSOR ............................ ....... ...............................362
Component Description ........................................362
CONSULT-II Reference Value in Data Monitor Mode
.362
On Board Diagnosis Logic ....................................362
DTC Confirmation Procedure ................... ....... .....363
Diagnostic Procedure ...........................................363
Component Inspection ..........................................364
DTC P0452 EVAP CONTROL SYSTEM PRESSURE
SENSOR ............................ ....... ...............................365
Component Description ........................................365
CONSULT-II Reference Value in Data Monitor Mode
.365
On Board Diagnosis Logic ....................................365
DTC Confirmation Procedure ................... ....... .....366
Wiring Diagram .....................................................367
Diagnostic Procedure ...........................................368
Component Inspection ..........................................371
DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR ............................ ....... ...............................372
Component Description ........................................372
CONSULT-II Reference Value in Data Monitor Mode
.372
On Board Diagnosis Logic ....................................372
DTC Confirmation Procedure ................... ....... .....373
Wiring Diagram .....................................................374
Diagnostic Procedure ............................................375
Component Inspection ..........................................379
DTC P0455 EVAP CONTROL SYSTEM .................380
On Board Diagnosis Logic ....................................380
DTC Confirmation Procedure ................................381
Diagnostic Procedure ............................................382
DTC P0456 EVAP CONTROL SYSTEM .................388
On Board Diagnosis Logic ....................................388
DTC Confirmation Procedure ................................389
Overall Function Check .........................................390
Diagnostic Procedure ............................................391
Component Inspection ..........................................398
DTC P0460 FUEL LEVEL SENSOR .......................399
Component Description ........................................399
On Board Diagnostic Logic ...................................399
DTC Confirmation Procedure ................................399
Diagnostic Procedure ............................................400
Removal and Installation .......................................400
DTC P0461 FUEL LEVEL SENSOR .......................401
Component Description ........................................401
On Board Diagnostic Logic ...................................401
Overall Function Check .........................................401
Diagnostic Procedure ............................................402
Removal and Installation .......................................402
DTC P0462, P0463 FUEL LEVEL SENSOR ...........403
Component Description ........................................403
On Board Diagnostic Logic ...................................403
DTC Confirmation Procedure ................................403
Diagnostic Procedure ............................................404
Removal and Installation .......................................404
DTC P0500 VSS ......................................................405
Description ............................................................405
On Board Diagnosis Logic ....................................405
DTC Confirmation Procedure ................................405
Overall Function Check .........................................406
Diagnostic Procedure ............................................406
DTC P0506 ISC SYSTEM .......................................407
Description ............................................................407
On Board Diagnosis Logic ....................................407
DTC Confirmation Procedure ................................407
Diagnostic Procedure ............................................408
DTC P0507 ISC SYSTEM .......................................409
Description ............................................................409
On Board Diagnosis Logic ....................................409
DTC Confirmation Procedure ................................409
Diagnostic Procedure ............................................410
DTC P0550 PSP SENSOR ......................................411
Component Description ........................................411
CONSULT-II Reference Value in Data Monitor Mode
.411
On Board Diagnosis Logic ....................................411
DTC Confirmation Procedure ................................411
Wiring Diagram ................................................... ..412
Diagnostic Procedure ............................................413
Component Inspection ..........................................415
Removal and Installation .......................................415
DTC P0605 ECM .....................................................416
Component Description ........................................416
On Board Diagnosis Logic ....................................416
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EC-4
DTC Confirmation Procedure ............................... 416
Diagnostic Procedure ........................................... 417
DTC P1065 ECM POWER SUPPLY ....................... 419
Component Description ........................................ 419
On Board Diagnosis Logic ................................... 419
DTC Confirmation Procedure ............................... 419
Wiring Diagram .................................................... 420
Diagnostic Procedure ........................................... 421
DTC P1111 IVT CONTROL SOLENOID VALVE .... 423
Component Description ........................................ 423
CONSULT-II Reference Value in Data Monitor Mode
. 423
On Board Diagnosis Logic ................................... 423
DTC Confirmation Procedure ............................... 423
Wiring Diagram .................................................... 424
Diagnostic Procedure ........................................... 425
Component Inspection ......................................... 426
Removal and Installation ...................................... 426
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................ 427
Component Description ........................................ 427
On Board Diagnosis Logic ................................... 427
DTC Confirmation Procedure ............................... 427
Diagnostic Procedure ........................................... 428
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION ........................ .......................... ............ 429
Description ........................................................... 429
On Board Diagnosis Logic ................................... 429
DTC Confirmation Procedure ............................... 429
Wiring Diagram .................................................... 430
Diagnostic Procedure ........................................... 432
Component Inspection ......................................... 436
Remove and Installation ....................................... 436
DTC P1124, P1126 THROTTLE CONTROL MOTOR
RELAY .................................................................... 437
Component Description ........................................ 437
CONSULT-II Reference Value in Data Monitor Mode
. 437
On Board Diagnosis Logic ................................... 437
DTC Confirmation Procedure ............................... 437
Wiring Diagram .................................................... 439
Diagnostic Procedure ........................................... 440
Component Inspection ......................................... 442
DTC P1128 THROTTLE CONTROL MOTOR ........ 443
Component Description ........................................ 443
On Board Diagnosis Logic ................................... 443
DTC Confirmation Procedure ............................... 443
Wiring Diagram .................................................... 444
Diagnostic Procedure ........................................... 446
Component Inspection ......................................... 447
Removal and Installation ...................................... 447
DTC P1143 HO2S1 ................................................. 448
Component Description ........................................ 448
CONSULT-II Reference Value in Data Monitor Mode
. 448
On Board Diagnosis Logic ................................... 448
DTC Confirmation Procedure ............................... 449
Overall Function Check ........................................ 449
Diagnostic Procedure ........................................... 450
Component Inspection ..........................................452
Removal and Installation ......................................453
DTC P1144 HO2S1 ........................... ....... ...... ....... ..454
Component Description ........................................454
CONSULT-II Reference Value in Data Monitor Mode
.454
On Board Diagnosis Logic ....................................454
DTC Confirmation Procedure ...............................455
Overall Function Check ........................................455
Diagnostic Procedure ...........................................456
Component Inspection ..........................................458
Removal and Installation ......................................459
DTC P1146 HO2S2 ........................... ....... ...... ....... ..460
Component Description ........................................460
CONSULT-II Reference Value in Data Monitor Mode
.460
On Board Diagnosis Logic ....................................460
DTC Confirmation Procedure ...............................461
Overall Function Check ........................................461
Wiring Diagram .....................................................463
Diagnostic Procedure ...........................................464
Component Inspection ..........................................466
Removal and Installation ......................................467
DTC P1147 HO2S2 ........................... ....... ...... ....... ..468
Component Description ........................................468
CONSULT-II Reference Value in Data Monitor Mode
.468
On Board Diagnosis Logic ....................................468
DTC Confirmation Procedure ...............................469
Overall Function Check ........................................469
Wiring Diagram .....................................................471
Diagnostic Procedure ...........................................472
Component Inspection ..........................................474
Removal and Installation ......................................475
DTC P1148 CLOSED LOOP CONTROL ................476
On Board Diagnosis Logic ....................................476
DTC Confirmation Procedure ...............................476
Overall Function Check ........................................476
Diagnostic Procedure ...........................................477
DTC P1211 TCS CONTROL UNIT ..........................478
Description ................... ...... ....... ...... ......................478
On Board Diagnosis Logic ....................................478
DTC Confirmation Procedure ...............................478
Diagnostic Procedure ...........................................478
DTC P1212 TCS COMMUNICATION LINE ............479
Description ................... ...... ....... ...... ......................479
On Board Diagnosis Logic ....................................479
DTC Confirmation Procedure ...............................479
Diagnostic Procedure ...........................................479
DTC P1217 ENGINE OVER TEMPERATURE ........480
Description ................... ...... ....... ...... ......................480
CONSULT-II Reference Value in Data Monitor Mode
.481
On Board Diagnosis Logic ....................................481
Overall Function Check ........................................481
Wiring Diagram .....................................................484
Diagnostic Procedure ...........................................485
Main 12 Causes of Overheating ...........................492
Component Inspection ..........................................493
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DTC P1225 TP SENSOR ........................................495
Component Description ........................................495
On Board Diagnosis Logic ....................................495
DTC Confirmation Procedure ................... ....... .....495
Diagnostic Procedure ...........................................496
Remove and Installation ........ ...............................496
DTC P1226 TP SENSOR ........................................497
Component Description ........................................497
On Board Diagnosis Logic ....................................497
DTC Confirmation Procedure ................... ....... .....497
Diagnostic Procedure ...........................................498
Remove and Installation ........ ...............................498
DTC P1229 SENSOR POWER SUPPLY ................499
On Board Diagnosis Logic ....................................499
DTC Confirmation Procedure ................... ....... .....499
Wiring Diagram .....................................................500
Diagnostic Procedure ...........................................501
DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ...............................504
Description ................ .......................... ..................504
CONSULT-II Reference Value in Data Monitor Mode
.504
On Board Diagnosis Logic ....................................505
DTC Confirmation Procedure ................... ....... .....505
Wiring Diagram .....................................................506
Diagnostic Procedure ...........................................508
Component Inspection ..........................................510
Removal and Installation ......................................511
DTC P1446 EVAP CANISTER VENT CONTROL
VALVE .....................................................................512
Component Description ........................................512
CONSULT-II Reference Value in Data Monitor Mode
.512
On Board Diagnosis Logic ....................................512
DTC Confirmation Procedure ................... ....... .....513
Wiring Diagram .....................................................514
Diagnostic Procedure ...........................................515
Component Inspection ..........................................517
DTC P1564 ASCD STEERING SWITCH ................519
Component Description ........................................519
CONSULT-II Reference Value in Data Monitor Mode
.519
On Board Diagnosis Logic ....................................519
DTC Confirmation Procedure ................... ....... .....520
Wiring Diagram .....................................................521
Diagnostic Procedure ...........................................523
Component Inspection ..........................................526
DTC P1572 ASCD BRAKE SWITCH ......................527
Component Description ........................................527
CONSULT-II Reference Value in Data Monitor Mode
.527
On Board Diagnosis Logic ....................................527
DTC Confirmation Procedure ................... ....... .....528
Wiring Diagram .....................................................529
Diagnostic Procedure ...........................................531
Component Inspection ..........................................536
DTC P1574 ASCD VEHICLE SPEED SENSOR .....538
Component Description ........................................538
On Board Diagnosis Logic ....................................538
DTC Confirmation Procedure ................................538
Diagnostic Procedure ............................................539
DTC P1706 PNP SWITCH .......................................540
Component Description ........................................540
CONSULT-II Reference Value in Data Monitor Mode
.540
On Board Diagnosis Logic ....................................540
DTC Confirmation Procedure ................................540
Overall Function Check .........................................541
Wiring Diagram ................................................... ..542
Diagnostic Procedure ............................................543
DTC P1800 VIAS CONTROL SOLENOID VALVE ..545
Component Description ........................................545
CONSULT-II Reference Value in Data Monitor Mode
.545
On Board Diagnosis Logic ....................................545
DTC Confirmation Procedure ................................545
Wiring Diagram ................................................... ..546
Diagnostic Procedure ............................................547
Component Inspection ..........................................548
Removal and Installation .......................................549
DTC P1805 BRAKE SWITCH .................................550
Description ............................................................550
CONSULT-II Reference Value in Data Monitor Mode
.550
On Board Diagnosis Logic ....................................550
DTC Confirmation Procedure ................................550
Wiring Diagram ................................................... ..551
Diagnostic Procedure ............................................552
Component Inspection ..........................................554
DTC P2122, P2123 APP SENSOR .........................555
Component Description ........................................555
CONSULT-II Reference Value in Data Monitor Mode
.555
On Board Diagnosis Logic ....................................555
DTC Confirmation Procedure ................................556
Wiring Diagram ................................................... ..557
Diagnostic Procedure ............................................559
Component Inspection ..........................................561
Removal and Installation .......................................561
DTC P2127, P2128 APP SENSOR .........................562
Component Description ........................................562
CONSULT-II Reference Value in Data Monitor Mode
.562
On Board Diagnosis Logic ....................................562
DTC Confirmation Procedure ................................563
Wiring Diagram ................................................... ..564
Diagnostic Procedure ............................................566
Component Inspection ..........................................569
Remove and Installation .......................................569
DTC P2135 TP SENSOR ........................................570
Component Description ........................................570
CONSULT-II Reference Value in Data Monitor Mode
.570
On Board Diagnosis Logic ....................................570
DTC Confirmation Procedure ................................570
Wiring Diagram ................................................... ..572
Diagnostic Procedure ............................................574
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EC-6
Component Inspection ......................................... 577
Remove and Installation ....................................... 577
DTC P2138 APP SENSOR ..................................... 578
Component Description ........................................ 578
CONSULT-II Reference Value in Data Monitor Mode
. 578
On Board Diagnosis Logic ................................... 578
DTC Confirmation Procedure ............................... 579
Wiring Diagram .................................................... 580
Diagnostic Procedure ........................................... 582
Component Inspection ......................................... 585
Remove and Installation ....................................... 585
IGNITION SIGNAL .................................................. 586
Component Description ........................................ 586
Wiring Diagram .................................................... 587
Diagnostic Procedure ........................................... 590
Component Inspection ......................................... 595
Removal and Installation ...................................... 596
VIAS ............................ ............................................ 597
Description ........................................................... 597
CONSULT-II Reference Value in Data Monitor Mode
. 598
Wiring Diagram .................................................... 599
Diagnostic Procedure ........................................... 601
Component Inspection ......................................... 605
Removal and Installation ...................................... 606
INJECTOR CIRCUIT ............................................... 607
Component Description ........................................ 607
CONSULT-II Reference Value in Data Monitor Mode
. 607
Wiring Diagram .................................................... 608
Diagnostic Procedure ........................................... 609
Component Inspection ......................................... 612
Removal and Installation ...................................... 612
FUEL PUMP CIRCUIT ............................................ 613
Description ........................................................... 613
CONSULT-II Reference Value in Data Monitor Mode
. 613
Wiring Diagram .................................................... 614
Diagnostic Procedure ........................................... 615
Component Inspection ......................................... 618
Removal and Installation ...................................... 618
REFRIGERANT PRESSURE SENSOR ................. 619
Component Description ........................................ 619
Wiring Diagram .................................................... 620
Diagnostic Procedure ........................................... 621
Removal and Installation ...................................... 624
ELECTRICAL LOAD SIGNAL ................................625
CONSULT-II Reference Value in Data Monitor Mode
.625
Wiring Diagram .....................................................626
Diagnostic Procedure ...........................................627
Wiring Diagram .....................................................632
Diagnostic Procedure ...........................................633
Wiring Diagram .....................................................635
Diagnostic Procedure ...........................................636
ASCD BRAKE SWITCH .........................................638
Component Description ........................................638
CONSULT-II Reference Value in Data Monitor Mode
.638
Wiring Diagram .....................................................639
Diagnostic Procedure ...........................................641
Component Inspection ..........................................646
ASCD INDICATOR ..................................................648
Component Description ........................................648
CONSULT-II Reference Value in Data Monitor Mode
.648
Wiring Diagram .....................................................649
Diagnostic Procedure ...........................................651
SNOW MODE SWITCH .............. ...... ....... ...... .........652
Description ................... ...... ....... ...... ......................652
CONSULT-II Reference Value in the Data Monitor
Mode .....................................................................652
Wiring Diagram .....................................................653
Diagnostic Procedure ...........................................655
Component Inspection ..........................................658
MIL AND DATA LINK CONNECTOR ......................659
Wiring Diagram .....................................................659
SERVICE DATA AND SPECIFICATIONS (SDS) ....663
Fuel Pressure .......................................................663
Idle Speed and Ignition Timing .............. ...... ....... ..663
Calculated Load Value ..........................................663
Mass Air Flow Sensor ...........................................663
Intake Air Temperature Sensor .............................663
Engine Coolant Temperature Sensor ...................663
Heated Oxygen Sensor 1 Heater .........................663
Heated Oxygen Sensor 2 Heater .........................663
Crankshaft Position Sensor (POS) .......................663
Camshaft Position Sensor (PHASE) ....................663
Throttle Control Motor ............... ...... ....... ...............664
Fuel Injector ..........................................................664
Fuel Pump ............................................................664
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Revision: 2005 March 2005 X-Trail
EC-7
INDEX FOR DTC
INDEX FOR DTC PFP:00024 DTC No. Index ABS00D80
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*1
CONSULT-II
2
GST*
No DTC
U1000
U1001
P0000 0000
P0011 0011 INT/V TIM CONT-B1 EC-166
P0031 0031 HO2S1 HTR (B1) EC-170
P0032 0032 HO2S1 HTR (B1) EC-170
P0037 0037 HO2S2 HTR (B1) EC-176
P0038 0038 HO2S2 HTR (B1) EC-176
P0101 0101 MAF SEN/CIRCUIT EC-182
P0102 0102 MAF SEN/CIRCUIT EC-191
P0103 0103 MAF SEN/CIRCUIT EC-191
P0112 0112 IAT SEN/CIRCUIT EC-199
P0113 0113 IAT SEN/CIRCUIT EC-199
P011 7 0117 ECT SEN/CIRC EC-205
P011 8 0118 ECT SEN/CIRC EC-205
P0122 0122 TP SEN 2/CIRC EC-211
P0123 0123 TP SEN 2/CIRC EC-211
P0125 0125 ECT SENSOR EC-219
P0127 0127 IAT SENSOR EC-222
P0128 0128 THERMSTAT FNCTN EC-225
P0132 0132 HO2S1 (B1) EC-225
P0133 0133 HO2S1 (B1) EC-234
P0134 0134 HO2S1 (B1) EC-244
P0138 0138 HO2S2 (B1) EC-252
P0139 0139 HO2S2 (B1) EC-259
P0171 0171 FUEL SYS-LEAN-B1 EC-267
P0172 0172 FUEL SYS-RICH-B1 EC-274
P0181 0181 FTT SENSOR EC-280
P0182 0182 FTT SEN/CIRCUIT EC-286
P0183 0183 FTT SEN/CIRCUIT EC-286
P0222 0222 TP SEN 1/CIRC EC-291
P0223 0223 TP SEN 1/CIRC EC-291
P0300 0300 MULTI CYL MISFIRE EC-299
P0301 0301 CYL 1 MISFIRE EC-299
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
ECM*
Flashing*
1000*
1001*
3
6
4
4
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
CAN COMM CIRCUIT EC-163
CAN COMM CIRCUIT EC-163
NO DTC IS DETECTED.
FURTHER TESTING
MA Y BE REQUIRED .
(CONSULT-II screen terms)
Reference page
EC-62
—
Revision: 2005 March 2005 X-Trail
EC-8
INDEX FOR DTC
DTC*1
CONSULT-II
2
GST*
P0302 0302 CYL 2 MISFIRE EC-299
P0303 0303 CYL 3 MISFIRE EC-299
P0304 0304 CYL 4 MISFIRE EC-299
P0327 0327 KNOCK SEN/CIRC-B1 EC-306
P0328 0328 KNOCK SEN/CIRC-B1 EC-306
P0335 0335 CKP SEN/CIRCUIT EC-311
P0340 0340 CMP SEN/CIRC-B1 EC-319
P0420 0420 TW CATALYST SYS-B1 EC-327
P0441 0441 EVAP PURG FLOW/MON EC-332
P0442 0442 EVAP SMALL LEAK EC-338
P0444 0444 PURG VOLUME CONT/V EC-348
P0445 0445 PURG VOLUME CONT/V EC-348
P0447 0447 VENT CONTROL VALVE EC-355
P0451 0451 EVAP SYS PRES SEN EC-362
P0452 0452 EVAP SYS PRES SEN EC-365
P0453 0453 EVAP SYS PRES SEN EC-372
P0455 0455 EVAP GROSS LEAK EC-380
P0456 0456 EVAP VERY SML LEAK EC-388
P0460 0460 FUEL LEV SEN SLOSH EC-399
P0461 0461 FUEL LEVEL SENSOR EC-401
P0462 0462 FUEL LEVL SEN/CIRC EC-403
P0463 0463 FUEL LEVL SEN/CIRC EC-403
P0500 0500
P0506 0506 ISC SYSTEM EC-407
P0507 0507 ISC SYSTEM EC-409
P0550 0550 PW ST P SEN/CIRC EC-411
P0605 0605 ECM EC-416
P0705 0705 PNP SW/CIRC AT-98
P0710 0710 ATF TEMP SEN/CIRC AT-104
P0720 0720
P0725 0725 ENGINE SPEED SIG AT-115
P0731 0731 A/T 1ST GR FNCTN AT-120
P0732 0732 A/T 2ND GR FNCTN AT-125
P0733 0733 A/T 3RD GR FNCTN AT-130
P0734 0734 A/T 4TH GR FNCTN AT-135
P0740 0740 TCC SOLENOID/CIRC AT-142
P0744 0744 A/T TCC S/V FNCTN AT-147
P0745 0745 L/PRESS SOL/CIRC AT-155
P0750 0750 SFT SOL A/CIRC AT-162
P0755 0755 SFT SOL B/CIRC AT-167
P1065 1065 ECM BACK UP/CIRC EC -419
P1111 1111 INT/V TIM V/CIR-B1 EC-423
ECM*
3
VEH SPEED SEN/CIRC*
VEH SPD SEN/CIR AT*
(CONSULT-II screen terms)
5
Items
5
Reference page
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AT-109
Revision: 2005 March 2005 X-Trail
EC-9
INDEX FOR DTC
DTC*1
CONSULT-II
P1610 - P1615 1610 - 1615 NATS MALFUNCTION EC-46
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Tes t Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.
*5: When the fail-safe operations for both self -diagnoses occur, the MIL illuminates.
*6: When engine is running.
2
GST*
P1121 1121 ETC ACTR EC-427
P11 22 1122 ETC FUNCTION/CIRC EC-429
P1124 1124 ETC MOT PWR EC-437
P1126 1126 ETC MOT PWR EC-437
P1128 1128 ETC MOT EC-443
P1143 1 1 43 HO2S1 (B1) EC-448
P1144 1 1 44 HO2S1 (B1) EC-454
P1146 1 1 46 HO2S2 (B1) EC-460
P1147 1 1 47 HO2S2 (B1) EC-468
P1148 1148 CLOSED LOOP-B1 EC-476
P1211 1211 TCS C/U FUNCTION EC-478
P1212 1212 TCS/CIRC EC-479
P1217 1217 ENG OVER TEMP EC-480
P1225 1225 CTP LEARNING EC-495
P1226 1226 CTP LEARNING EC-497
P1229 1229 SENSOR POWER/CIRC EC-499
P1444 1444 PURG VOLUME CONT/V EC-504
P1446 1446 VENT CONTROL VAL VE EC-512
P1564 1564 ASCD SW EC-519
P1572 1572 ASCD BRAKE SW EC-527
P1574 1574 ASCD VHL SPD SEN EC-538
P1705 1705 TP SEN/CIRC A/T AT-172
P1706 1706 P-N POS SW/CIRCUIT EC-540
P1720 1720 V/SP SEN (A/T OUT) AT-109
P1760 1760 O/R CLTCH SOL/CIRC AT-177
P1800 1800 VIAS S/V CIRC EC-545
P1805 1805 BRAKE SW/CIRCUIT EC-550
P2122 2122 APP SEN 1/CIRC EC-555
P2123 2123 APP SEN 1/CIRC EC-555
P2127 2127 APP SEN 2/CIRC EC-562
P2128 2128 APP SEN 2/CIRC EC-562
P2135 2135 TP SENSOR EC-570
P2138 2138 APP SENSOR EC-578
ECM*
3
(CONSULT-II screen terms)
Items
Reference page
Revision: 2005 March 2005 X-Trail
EC-10
INDEX FOR DTC
Alphabetical Index ABS00D7Z
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-163, "
(CONSULT-II screen terms)
A/T 1ST GR FNCTN P0731 0731 AT-120
A/T 2ND GR FNCTN P0732 0732 AT-125
A/T 3RD GR FNCTN P0733 0733 AT-130
A/T 4TH GR FNCTN P0734 0734 AT-135
A/T TCC S/V FNCTN P0744 0744 AT-147
APP SEN 1/CIRC P2122 2122 EC-555
APP SEN 1/CIRC P2123 2123 EC-555
APP SEN 2/CIRC P2127 2127 EC-562
APP SEN 2/CIRC P2128 2128 EC-562
APP SENSOR P2138 2138 EC-578
ASCD BRAKE SW P1572 1572 EC-527
ASCD SW P1564 1564 EC-519
ASCD VHL SPD SEN P1574 1574 EC-538
ATF TEMP SEN/CIRC P0710 0710 AT-104
BRAKE SW/CIRCUIT P1805 1805 EC-550
CAN COMM CIRCUIT U1000
CAN COMM CIRCUIT U1001
CKP SEN/CIRCUIT P0335 0335 EC-311
CLOSED LOOP-B1 P1148 1148 EC-476
CMP SEN/CIRC-B1 P0340 0340 EC-319
CTP LEARNING P1225 1225 EC-495
CTP LEARNING P1226 1226 EC-497
CYL 1 MISFIRE P0301 0301 EC -299
CYL 2 MISFIRE P0302 0302 EC -299
CYL 3 MISFIRE P0303 0303 EC-299
CYL 4 MISFIRE P0304 0304 EC -299
ECM P0605 0605 EC-416
ECM BACK UP/CIRC P1065 1065 EC-419
ECT SEN/CIRC P0117 0117 EC-205
ECT SEN/CIRC P0118 0118 EC-205
ECT SENSOR P0125 0125 EC-219
ENG OVER TEMP P1217 1217 EC-480
ENGINE SPEED SIG P0725 0725 AT-115
ETC ACTR P1121 1121 EC-427
ETC FUNCTION/CIRC P1122 1122 EC-429
ETC MOT P1128 1128 EC-443
ETC MOT PWR P1124 1124 EC- 437
ETC MOT PWR P1126 1126 EC- 437
EVAP GROSS LEAK P0455 0455 EC-380
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
CONSULT-II
GST*
DTC*1
2
ECM*
1000*
1001*
3
4
4
Reference page
EC-163
EC-163
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Revision: 2005 March 2005 X-Trail
EC-11
INDEX FOR DTC
Items
(CONSULT-II screen terms)
EVAP PURG FLOW/MON P0441 0441 EC-332
EVAP SMALL LEAK P0442 0442 EC-338
EVAP SYS PRES SEN P0451 0451 EC-362
EVAP SYS PRES SEN P0452 0452 EC-365
EVAP SYS PRES SEN P0453 0453 EC-372
EVAP VERY SML LEAK P0456 0456 EC-388
FTT SEN/CIRCUIT P0182 0 182 EC-286
FTT SEN/CIRCUIT P0183 0183 EC-286
FTT SENSOR P0181 0181 EC-280
FUEL LEV SEN SLOSH P0460 0460 EC-399
FUEL LEVEL SENSOR P0461 0461 EC-401
FUEL LEVL SEN/CIRC P0462 0462 EC-403
FUEL LEVL SEN/CIRC P0463 0463 EC-403
FUEL SYS-LEAN-B1 P0171 0171 EC-267
FUEL SYS-RICH-B1 P0172 0172 EC-274
HO2S1 (B1) P0132 0132 EC-227
HO2S1 (B1) P0133 0133 EC-234
HO2S1 (B1) P0134 0134 EC-244
HO2S1 (B1) P1143 1143 EC-448
HO2S1 (B1) P1144 1144 EC-454
HO2S1 HTR (B1) P0031 0031 EC-170
HO2S1 HTR (B1) P0032 0032 EC-170
HO2S2 (B1) P0138 0138 EC-252
HO2S2 (B1) P0139 0139 EC-259
HO2S2 (B1) P1146 1146 EC-460
HO2S2 (B1) P1147 1147 EC-468
HO2S2 HTR (B1) P0037 0037 EC-176
HO2S2 HTR (B1) P0038 0038 EC-176
IAT SEN/CIRCUIT P0112 0112 EC-199
IAT SEN/CIRCUIT P0113 0113 EC-199
IAT SENSOR P0127 0127 EC-222
INT/V TIM CONT-B1 P0011 0011 EC-166
INT/V TIM V/CIR-B1 P1111 1111 EC-423
ISC SYSTEM P0506 0506 EC-407
ISC SYSTEM P0507 0507 EC-409
KNOCK SEN/CIRC-B1 P0327 0327 EC-306
KNOCK SEN/CIRC-B1 P0328 0328 EC-306
L/PRESS SOL/CIRC P0745 0745 AT-155
MAF SEN/CIRCUIT P0101 0101 EC-182
MAF SEN/CIRCUIT P0102 0102 EC-191
MAF SEN/CIRCUIT P0103 0103 EC-191
MULTI CYL MISFIRE P0300 0300 EC-299
CONSULT-II
GST*
DTC*1
3
2
ECM*
Reference page
Revision: 2005 March 2005 X-Trail
EC-12
INDEX FOR DTC
Items
(CONSULT-II screen terms)
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EC-46
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
O/R CLTCH SOL/CIRC P1760 1760 AT-177
P-N POS SW/CIRCUIT P1706 1706 EC-540
PNP SW/CIRC P0705 0705 AT-98
PURG VOLUME CONT/V P0444 0444 EC-348
PURG VOLUME CONT/V P0445 0445 EC-348
PURG VOLUME CONT/V P1444 1444 EC-504
PW ST P SEN/CIRC P0550 0550 EC-411
SENSOR POWER/CIRC P1229 1229 EC-499
SFT SOL A/CIRC P0750 0750 AT-162
SFT SOL B/CIRC P0755 0755 AT-167
TCC SOLENOID/CIRC P0740 0740 AT-142
TCS C/U FUNCTIION P1211 1211 EC-478
TCS/CIRC P1212 1212 EC-479
THERMSTAT FNCTN P0128 0128 EC-225
TP SEN 1/CIRC P0222 0222 EC-291
TP SEN 1/CIRC P0223 0223 EC-291
TP SEN 2/CIRC P0122 0122 EC-211
TP SEN 2/CIRC P0123 0123 EC-211
TP SENSOR P2135 2135 EC-570
TP SEN/CIRC A/T P1705 1705 AT-172
TW CATALYST SYS-B1 P0420 0420 EC- 327
V/SP SEN (A/T OUT) P1720 1720 AT-109
VEH SPD SEN/CIR AT*
VEH SPEED SEN/CIRC*
VENT CONTROL VALVE P0447 0447 EC-355
VENT CONTROL VALVE P1446 1446 EC-460
VIAS S/V CIRC P1800 1800 EC-545
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.
*5: When the fail-safe operations for both self-di agno ses occur, the MIL illuminates.
*6: When engine is running.
5
5
CONSULT-II
GST*
No DTC
P0000 0000 —
P0720 0720 AT-109
P0500 0500 EC-405
DTC*1
3
2
ECM*
Flashing*
6
Reference page
EC-62
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Revision: 2005 March 2005 X-Trail
EC-13
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front sea t belt , helps t o redu ce th e r isk or s everi ty of injury to th e driv er an d front passenge r for c ertain
types of collision. Info rmation necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
● To avoid rendering the SRS inoperativ e, which cou ld increase the risk of persona l injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.
● Improper maintenance, in cluding incorrect removal a nd installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For rem ova l of Sp iral Ca ble an d Ai r
Bag Module, see the SRS section.
● Do not use electrical test equipme nt on any circuit related to the SRS unle ss instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnes ses or
harness connectors .
ABS00DCS
On Board Diagnostic (OBD) System of Engine and A/T ABS00CKO
The ECM has an on bo ard d iagn ostic syste m. It w ill light up th e ma lfunct ion indicat or (MIL ) to w arn the drive r
of a malfunction causing emission deterioration.
CAUTION:
● Be sure to turn the ignition switch O FF a nd di sc onne ct the ba tte ry grou nd c abl e be fore any repair
or inspection work. The open/s hort circuit of related swi tches, sensors, s olenoid valves, etc . will
cause the MIL to light up.
● Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
● Certain systems and compon ents, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-44, "
NESS CONNECTOR" .
● Be sure to route and secu re the harnesses properly afte r work. The interference of the ha rness
with a bracket, etc. may cause the MIL to light up due to the short circu it.
● Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up du e to the ma lfunc tio n of the EVAP system or fuel injection syste m,
etc.
● Be sure to erase the unneces sary mal function in formation (repairs compl eted) from th e ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
HAR-
Precaution ABS00CKP
● Always use a 12 volt battery as power source.
● Do not attempt to disconnec t battery cables while engi ne i s
running.
● Before connecting or dis connecting the ECM harness con-
nector, turn ignition switch OFF and disconnect battery
ground cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.
● Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
Revision: 2005 March 2005 X-Trail
EC-14
SEF289H
PRECAUTIONS
● Do not disassemble ECM.
● If battery cable is disconnected, the memory will return to
the initial ECM values.
The ECM will now start to self-contro l at its initial values.
Engine operation can vary slightly when the cable is disconnected. Howe ver, this is not an indication of a malfunc tion. Do not replace parts be cause of a sligh t variation.
● If the battery is disconnected, the following emission
related diagnostic information will be lost within 24 hours.
– Diagnostic trouble codes
– 1st trip diagnostic trouble codes
– Freeze frame data
– 1st freeze f rame data
– System readiness test (SRT) codes
– Test values
● When connecting ECM harness connector, fasten it
securely with a lever as far as i t will g o as shown in th e figure.
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PBIB1512E
● When connec ting or disconnecting pin connector s into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
● Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in co il and condenser, thus resulting in
damage to ICs.
● Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
PBIB0090E
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.
● Keep engine control system parts and harness dry.
● Before replacing ECM, perform “ECM Terminals and Refer-
ence Value” inspection and make sure ECM functions properly. Refer to EC-115, "
ECM Terminal s an d Ref er en c e Value"
.
● Handle mass air flow sensor carefully to avoid damage.
● Do not disassemble mass air flow sen sor.
● Do not clean mass air flow sensor with any type of deter-
gent.
● Do not disassemble electric throttle control actuator.
● Even a slight leak in the air intake system can cause seri-
MEF040D
ous incidents.
● Do not shock or jar the camshaft position sensor (PHASE), crankshaft position sensor (POS).
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Revision: 2005 March 2005 X-Trail
EC-15
PRECAUTIONS
● After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displa yed in the DTC Confirmation
Procedure if the repair is completed. The Overall Fun ction
Check should be a good result if the repair is completed.
● When measuring ECM sig nals with a circui t tester, connect
a break-out box (SST) and Y-cable adapter (SST) between
the ECM and ECM harness connector.
● When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short c ircuit and
damage the ECM power transistor.
● Do not use ECM ground te rminals when measuring input/
output vol tage. Doi ng so m ay re su lt i n da ma g e to t he E CM's
transistor. Use a ground other than ECM terminals, su ch as
the ground.
SEF217U
● Do not operate fuel pump when there is no fuel in lines.
● Tighten fuel hose clamps to the specified torque.
SEF348N
PBIB2344E
Revision: 2005 March 2005 X-Trail
EC-16
PRECAUTIONS
● Do not depress accelerator pedal when starting.
● Immediately after starting, do not rev up engine unneces-
sarily.
● Do not rev up engine just prior to shutdown.
SEF709Y
● When installing C.B. ham radio or a m obile phone, b e sure
to observe the following as it may adversely affect electronic control systems depending on installation location.
– Keep the antenna as far as possible from the electronic
control units.
– Keep the antenna feed er line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
– Adjust the antenna and feeder line so that the standing-
wave radio can be kept smaller.
– Be sure to ground the radio to vehicle body.
SEF708Y
Wiring Diagrams and Trouble Diagnosis ABS00CKQ
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When you read wiring diagrams, refer to the following:
● GI-14, "How to Read Wiring Diagrams"
● PG-2, "POWER SUPPLY ROUTING" for power distribution circuit
When you perform trouble diagnosis, refer to the followi ng:
● GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"
● GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident"
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Revision: 2005 March 2005 X-Trail
EC-17
PREPARATION
PREPARATION PFP:00002 Special Service Tools ABS00CKR
The actual shapes of Kent-Moore tools may differ from those of spe ci al se rvice tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
EG17650301
(J-33984-A)
Radiator cap tester
adapter
KV10117100
(J-36471-A)
Heated oxygen
sensor wrench
KV10114400
(J-38365)
Heated oxygen
sensor wrench
(J-44321)
Fuel pressure gauge
kit
Adapting radiator cap tester to radiator cap and
radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
S-NT564
Loosening or tightening heated oxygen sensors
with 22 mm (0.87 in) hexagon nut
S-NT379
Loosening or tightening heated oxygen sensors
a: 22 mm (0.87 in)
S-NT636
Checking fuel pressure
(J-44321-6)
Fuel pressure adapter
(J-45488)
Quick connector
release
LEC642
Connecting fuel pressure gauge to quick
connector type fuel lines.
LBIA0376E
Remove fuel tube quick connectors in engine
room.
PBIC0198E
Revision: 2005 March 2005 X-Trail
EC-18
PREPARATION
Tool number
(Kent-Moore No.)
Tool name
KV109E0010
(J-46209)
Break-out box
S-NT825
KV109E0080
(J-45819)
Y-cable adapter
S-NT826
Description
Measuring ECM signals with a circuit tester
Measuring ECM signals with a circuit tester
Commercial Service Tools ABS00CKS
Tool name
(Kent-Moore No.)
Leak detector
i.e.:(J-41416)
Description
Locating the EVAP leak
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S-NT703
EVAP service port
adapter
i.e.:(J-41413-OBD)
S-NT704
Fuel filler cap adapter
i.e.: (J-41416)
S-NT815
Socket wrench Removing and installing engine coolant
S-NT705
Applying positive pressure through EVAP service
port
Checking fuel tank vacuum relief valve opening
pressure
temperature sensor
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Revision: 2005 March 2005 X-Trail
EC-19
PREPARATION
Tool name
(Kent-Moore No.)
Oxygen sensor thread
cleaner
i.e.: (J-43897-18)
(J-43897-12)
Anti-seize lubricant
i.e.: (Permatex
133AR or equivalent
meeting MIL
specification MIL-A-
907)
TM
Description
Reconditioning the exhaust syst em threads
before installing a new oxygen sensor. Use with
anti-seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for
Zirconia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for
Titania Oxygen Sensor
AEM488
Lubricating oxygen sensor thread clea ni ng to ol
when reconditioning exhaust system threads.
S-NT779
Revision: 2005 March 2005 X-Trail
EC-20
ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM PFP:23710
System Diagram ABS00CKT
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PBIB2361E
Revision: 2005 March 2005 X-Trail
EC-21
ENGINE CONTROL SYSTEM
Multiport Fuel Injection (MFI) System ABS00CKW
INPUT/OUTPUT SIGNAL CHART
Sensor Input Signal to ECM
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Power steering pressure sensor Power steering operation
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Heated oxygen sensor 2*
Wheel sensor*
Air conditioner switch Air conditioner operation
Battery
*1: This sensor is not used to control the engine sys tem under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signal of engine speed and battery voltage.
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Engine speed*
Piston position
Density of oxygen in exhaust gas
Ve hicle speed
Battery voltage*
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ECM
function
Fuel injection & mixture ratio
control
Actuator
Fuel injector
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (inj ection pu lse durati on). The a mount of fuel inject ed is a pr ogram val ue in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signal s (for engine speed an d intake air) from both the cra nkshaft positio n sensor and the mas s air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operating conditions as listed below.
<Fuel increase>
● During warm-up
● When starting the engine
● During acceleration
● Hot-engine opera tio n
● When selector lever is changed from N to D (A/T models)
● High-load, high-speed operation
<Fuel decrease>
● During deceleration
● During high engine speed operation
Revision: 2005 March 2005 X-Trail
EC-22
ENGINE CONTROL SYSTEM
MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)
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PBIB0121E
The mixture r atio feedback system provides the best air-fuel mixture ratio for driveability and emission control.
The three way catalyst (manifold) can then better reduce CO, HC and NOx emissions. This system uses
heated oxygen sensor 1 in the exhaust manifold to monitor whether the engine operation is rich or lean. The
ECM adjusts the injection pulse width according to the sensor voltage signal. For more information about
heated oxygen sensor 1, refer to EC-227, "
DTC P0132 HO2S1" . This maintains the mixture ra tio within the
range of stoichiometric (ide al air-fuel mixture).
This stage is referred to as the closed loop control condition.
Heated oxygen sens or 2 is located downstream of the three way catalyst (manifold). Even if the switching
characteristics of heated oxyge n sensor 1 shift , the air-fuel ratio is controlled to stoichiometric by the signal
from heated oxygen sensor 2.
Open Loop Control
The open loop system condition refers to when the ECM detects any of the following conditions. Feedback
control stops in order to maintain stabilized fuel combustion.
● Deceleration and acceleration
● High-load, high-speed operat ion
● Malfunction of heated oxygen sensor 1 or its circuit
● Insufficient activation of heated oxygen sensor 1 at low engine coolant temperature
● High engine coolant temperature
● During warm-up
● After shifting from N to D (A/T models )
● When starting the engine
MIXTURE RATIO SELF-LEARNING CONTROL
The mixture ratio fe edback control syste m monitors the mixture ratio signal transmit ted from heated oxygen
sensor 1. This feedba ck sign al is then se nt to the ECM. Th e ECM contro ls the bas ic mixture ratio as close to
the theoretical mixture ratio as possible. However, the basic mixture ratio is not necessarily controlled as originally designed. Both manufacturing differences (i.e., mass air flow sensor hot wire) and characteristic
changes during operation (i.e., fuel injector clogging) directly affect mixture ratio.
Accordingly, the differe nc e be tw een th e ba si c a nd t he or eti ca l mi xtur e ra ti os i s m on ito re d in thi s sys te m. Thi s is
then computed in terms of “injection pu lse duration” to autom atically compens ate for the difference betw een
the two ratios.
“Fuel trim” refers to the feedback compensation valu e compared against the basic injection duration. Fuel trim
includes short term fuel trim and long term fuel trim.
“Short term fuel trim” is the sh ort-term fuel c ompensatio n used to ma intain the mixture ratio at its th eoretical
value. The signal from heated oxygen sensor 1 indicates whether the mixture ratio is RICH or LEAN compared
to the theoretica l value. Th e signal then trigge rs a reductio n in fuel volume if the mixtu re ratio is rich, and a n
increase in fuel volume if it is lean.
“Long term fuel trim” is ov erall fue l compens ation ca rried out long -term to compe nsate fo r continual deviation
of the short t e rm fue l t rim f rom t he c en tra l valu e. Su ch dev ia ti o n wil l oc cu r d ue to in di vi dual eng i ne differences,
wear over time and changes in the usage environment.
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Revision: 2005 March 2005 X-Trail
EC-23
ENGINE CONTROL SYSTEM
FUEL INJECTION TIMING
SEF337W
Two types of systems are used.
Sequential Multiport Fuel Injection System
Fuel is injec ted into each cy linder d uring ea ch engi ne cyc le accordi ng to the firin g order. This system i s used
when the engine is running.
Simultaneous Multiport Fuel Injection System
Fuel is injected simu ltaneou sly in to all fou r cyli nd ers twic e each engin e cyc le. I n othe r words, puls e sign als of
the same width are simultaneously transmitted from the ECM.
The four injectors will then receive the signals two times for each engine cycle.
This system is used when the engine is being started and/or if the fail-sa fe system (CPU) is operating.
FUEL SHUT-OFF
Fuel to each cylinder is cut off during deceleration or operation of the engine at excessively high speeds.
Electronic Ignition (EI) System ABS00CKX
INPUT/OUTPUT SIGNAL CHART
Sensor Input Signal to ECM
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Wheel sensor*
Battery
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signal of engine speed and battery voltage.
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Engine speed*
Piston position
Ve hicle speed
Battery voltage*
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ECM func-
tion
Ignition
timing control
Power transistor
SYSTEM DESCRIPTION
Firing order: 1-3-4-2
The ignition ti ming is co nt rol l ed by t he EC M to ma in tain the best ai r -f ue l ra ti o f o r e ve ry r unn ing co nd it io n of th e
engine. The ignition timin g data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) signal. Computing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is revised by the ECM according to the other data stored in
the ECM.
● At starting
● During warm-up
● At idle
● At low battery voltage
Actuator
Revision: 2005 March 2005 X-Trail
EC-24
ENGINE CONTROL SYSTEM
● During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Fuel Cut Control (at No Load and High Engine Speed) ABS00CKZ
INPUT/OUTPUT SIGNAL CHART
Sensor Input Signal to ECM
Park/neutral position (PNP) swit ch Neutral position
Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant temper at ure
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Wheel sensor* Vehicle speed
*: This signal is sent to the ECM through CAN communi cat ion line.
Engine speed
SYSTEM DESCRIPTION
If the engine speed is above 1,800 rpm under no load (for example, the shift position is neutral and engine
speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies
based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under EC-22, "
ECM func-
tion
Fuel cut
control
Fuel injector
Actuator
Multiport Fuel Injectio n (MF I) Sys tem "
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Revision: 2005 March 2005 X-Trail
EC-25
AIR CONDITIONING CUT CONTROL
AIR CONDITIONING CUT CONTROL PFP:23710 Input/Outp ut Signal Chart ABS00DCO
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch Air conditioner ON signal
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine coolant temperature sensor Engine coolant temperature
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensor*
Battery
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signal of engine speed and battery voltage.
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Engine speed*
Vehicle speed
Battery voltage*
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned OFF.
● When the accelerator pedal is fully depressed.
● When cranking the engine.
● At high engine speeds.
● When the engine coolant temperature becomes excessively high.
● When operating power steering during low engine speed or low vehicle speed.
● When engine speed is excessively low.
● When refrigerant pressure is excessively low or high.
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Air conditioner
cut control
2
Air conditioner relay
Revision: 2005 March 2005 X-Trail
EC-26
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) PFP:18930
System Description ABS00D04
INPUT/OUTPUT SIGNAL CHART
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
Stop lamp switch Brake pedal operation
ASCD clutch switch (M/T models) Clutch pedal operation
ASCD steering switch ASCD steering switch operation
Park/Neutral position (PNP)
switch
Wheel sensor* Vehicle speed
TCM*(A/T models) Powertrain revoluti on
*: This signal is sent to the ECM through CAN communi cat ion line.
Gear position
ASCD vehicle speed control
Electric throttle control
actuator
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BASIC ASCD SYSTEM
Refer to Owner's Manual for AS CD operating i nstructions.
Automatic Speed C ontrol Device (ASCD) allows a driver t o keep vehicle at predetermine d constant speed
without depressi ng accelerator pedal. Dr iv er ca n se t ve hicle speed in advanc e be tw e en app r ox im ate ly 40 km /
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE indicator in combination meter illuminates.)
When vehicle speed reaches a desired speed betw een approximately 40 km /h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET indicat or in combin ati on meter illu m inate s. )
ACCEL OPERATION
If the RESUME/ACCELERATE switch is depressed during cruise control driving, increase the vehicle speed
until the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditio ns exist, cruise operation will be canceled.
● CANCEL switch is depressed
● Brake pedal is depressed
● Clutch pedal is depressed or shift position is changed to the neutral position (M/T models)
● Selector lever is changed to N, P, R position (A/T models)
● Vehicle speed decreased to 13km/h (8MPH) lower than the set speed
● VDC/TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indica tor lamp.
● Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELEATE switch.
● Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is tur ne d to OF F du rin g AS CD is ac tiva t ed , all of AS CD oper a tion s w i ll b e ca nc el ed an d v eh ic le
speed memory wil l be erased.
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Revision: 2005 March 2005 X-Trail
EC-27
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
COAST OPERATION
When the SET/COAST switch is depressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
When the RESU ME/ACCELERATE switch is depressed after c ancel operation other than depressing MAIN
switch is performe d, vehi cl e sp eed wi ll ret u rn t o last se t s peed . To resume vehicl e se t spe ed , veh ic le condi t ion
must meet following conditions.
● Brake pedal is released.
● Clutch pedal is released (M/T models)
● A/T selector lever is in other than P and N positions (A/T models)
● Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)
Component Description ABS00D05
ASCD STEERING SWITCH
Refer to EC-519 .
ASCD BRAKE SWITCH
Refer to EC-527 and EC-638 .
ASCD CLUTCH SWITCH
Refer to EC-527 .
STOP LAMP SWITCH
Refer to EC-527 , EC-550 and EC-638
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EC-427 , EC-429 , EC-437 and EC-443 .
ASCD INDICATOR
Refer to EC-648 .
Revision: 2005 March 2005 X-Trail
EC-28
CAN COMMUNICATION
CAN COMMUNICATION PFP:23710
System Description ABS00DCQ
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during opera tion (not independent). In CA N communication, cont rol units are connected with 2
communicatio n lines ( CAN H lin e, CAN L li ne) all owi ng a high ra te of in forma tion tr ans missi on wit h less wir ing.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-16, "
CAN Communication Unit" , about CAN communication for detail.
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Revision: 2005 March 2005 X-Trail
EC-29
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION SYSTEM PFP:14950 Description ABS00CZV
SYSTEM DESCRIPTION
PBIB2360E
The evaporativ e emission sy stem is used to reduce hydr ocarbons emi tted into the at mosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportional ly regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.
Revision: 2005 March 2005 X-Trail
EC-30
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