2001 NISSAN X-TRAIL Service Repair Manual

USB fuel pressure water pump fuel filter location fuse box location wiring

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ECA ECM Terminals and Reference Value .................. 192
On Board Diagnosis Logic ................................... 192
DTC Confirmation Procedure .................

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ECA ECM Terminals and Reference Value .................. 192
On Board Diagnosis Logic ................................... 192
DTC Confirmation Procedure ............................... 193
Overall Function Check ........................................ 193
Wiring Diagram .................................................... 195
Diagnostic Procedure ........................................... 196
Component Inspection ......................................... 197
Removal and Installation ...................................... 199
DTC P0171 FUEL INJECTION SYSTEM FUNCTION . 200
On Board Diagnosis Logic ................................... 200
DTC Confirmation Procedure ............................... 200
Wiring Diagram .................................................... 202
Diagnostic Procedure ........................................... 203
DTC P0172 FUEL INJECTION SYSTEM FUNCTION . 206
On Board Diagnosis Logic ................................... 206
DTC Confirmation Procedure ............................... 206
Wiring Diagram .................................................... 208
Diagnostic Procedure ........................................... 209
DTC P0222, P0223 TP SENSOR ........................... 212
Component Description ........................................ 212
CONSULT-II Reference Value in Data Monitor Mode
. 212
ECM Terminals and Reference Value .................. 212
On Board Diagnosis Logic ................................... 213
DTC Confirmation Procedure ............................... 213
Wiring Diagram .................................................... 214
Diagnostic Procedure ........................................... 215
Component Inspection ......................................... 216
Remove and Installation ....................................... 216
DTC P0300 - P0304 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 4 CYLINDER MISFIRE ..................... 217
On Board Diagnosis Logic ................................... 217
DTC Confirmation Procedure ............................... 217
Diagnostic Procedure ........................................... 218
DTC P0327, P0328 KS ........................................... 222
Component Description ........................................ 222
ECM Terminals and Reference Value .................. 222
On Board Diagnosis Logic ................................... 222
DTC Confirmation Procedure ............................... 222
Wiring Diagram .................................................... 224
Diagnostic Procedure ........................................... 225
Component Inspection ......................................... 226
Removal and Installation ...................................... 226
DTC P0335 CKP SENSOR (POS) .......................... 227
Component Description ........................................ 227
CONSULT-II Reference Value in Data Monitor Mode
. 227
ECM Terminals and Reference Value .................. 227
On Board Diagnosis Logic ................................... 228
DTC Confirmation Procedure ............................... 228
Wiring Diagram .................................................... 229
Diagnostic Procedure ........................................... 230
Component Inspection ......................................... 231
Removal and Installation ...................................... 232
DTC P0340 CMP SENSOR (PHASE) ..................... 233
Component Description ........................................ 233
ECM Terminals and Reference Value .................. 233
On Board Diagnosis Logic ................................... 233
DTC Confirmation Procedure ............................... 234Wiring Diagram .....................................................235
Diagnostic Procedure ...........................................236
Component Inspection ..........................................238
Removal and Installation ......................................238
DTC P0420 THREE WAY CATALYST FUNCTION . 239
On Board Diagnosis Logic ....................................239
DTC Confirmation Procedure ...............................239
Overall Function Check ........................................240
Diagnostic Procedure ...........................................241
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ......................244
Description ............................................................244
CONSULT-II Reference Value in Data Monitor Mode
.244
ECM Terminals and Reference Value ...................244
On Board Diagnosis Logic ....................................245
DTC Confirmation Procedure ...............................245
Wiring Diagram .....................................................246
Diagnostic Procedure ...........................................247
Component Inspection ..........................................248
Removal and Installation ......................................249
DTC P0500 VSS ......................................................250
Component Description ........................................250
ECM Terminals and Reference Value ...................250
On Board Diagnosis Logic ....................................250
DTC Confirmation Procedure ...............................250
Overall Function Check ........................................251
Wiring Diagram .....................................................252
Diagnostic Procedure ...........................................254
DTC P0550 PSP SENSOR .....................................255
Component Description ........................................255
CONSULT-II Reference Value in Data Monitor Mode
.255
ECM Terminals and Reference Value ...................255
On Board Diagnosis Logic ....................................255
DTC Confirmation Procedure ...............................255
Wiring Diagram .....................................................257
Diagnostic Procedure ...........................................258
Component Inspection ..........................................259
DTC P0605 ECM .....................................................260
Component Description ........................................260
On Board Diagnosis Logic ....................................260
DTC Confirmation Procedure ...............................260
Diagnostic Procedure ...........................................261
DTC P0650 MI .........................................................263
Component Description ........................................263
On Board Diagnosis Logic ....................................263
DTC Confirmation Procedure ...............................263
Wiring Diagram .....................................................264
Diagnostic Procedure ...........................................265
DTC P1065 ECM POWER SUPPLY .......................267
Component Description ........................................267
On Board Diagnosis Logic ....................................267
DTC Confirmation Procedure ...............................267
Wiring Diagram .....................................................268
Diagnostic Procedure ...........................................269
DTC P1111 IVT CONTROL SOLENOID VALVE .....271
Component Description ........................................271
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ECM Terminals and Reference Value ...................271
On Board Diagnosis Logic ....................................271
DTC Confirmation Procedure ...............................272
Wir

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ECM Terminals and Reference Value ...................271
On Board Diagnosis Logic ....................................271
DTC Confirmation Procedure ...............................272
Wiring Diagram .....................................................273
Diagnostic Procedure ...........................................274
Component Inspection ..........................................275
Removal and Installation ......................................275
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR .............................................................276
Description ............................................................276
On Board Diagnosis Logic ....................................276
DTC Confirmation Procedure ...............................276
Diagnostic Procedure ...........................................277
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION ..............................................................278
Description ............................................................278
CONSULT-II Reference Value in Data Monitor Mode
.278
ECM Terminals and Reference Value ...................278
On Board Diagnosis Logic ....................................279
DTC Confirmation Procedure ...............................279
Wiring Diagram .....................................................280
Diagnostic Procedure ...........................................281
Remove and Installation .......................................284
DTC P1124, P1126 THROTTLE CONTROL MOTOR
RELAY .....................................................................285
Component Description ........................................285
CONSULT-II Reference Value in Data Monitor Mode
.285
ECM Terminals and Reference Value ...................285
On Board Diagnosis Logic ....................................285
DTC Confirmation Procedure ...............................285
Wiring Diagram .....................................................287
Diagnostic Procedure ...........................................288
Component Inspection ..........................................289
DTC P1128 THROTTLE CONTROL MOTOR .........290
Component Description ........................................290
ECM Terminals and Reference Value ...................290
On Board Diagnosis Logic ....................................290
DTC Confirmation Procedure ...............................290
Wiring Diagram .....................................................292
Diagnostic Procedure ...........................................293
Component Inspection ..........................................294
Remove and Installation .......................................294
DTC P1143 HO2S1 .................................................295
Component Description ........................................295
CONSULT-II Reference Value in Data Monitor Mode
.295
ECM Terminals and Reference Value ...................295
On Board Diagnosis Logic ....................................296
DTC Confirmation Procedure ...............................296
Overall Function Check ........................................297
Diagnostic Procedure ...........................................297
Component Inspection ..........................................299
Removal and Installation ......................................300
DTC P1144 HO2S1 .................................................301
Component Description ........................................301
CONSULT-II Reference Value in Data Monitor Mode .301
ECM Terminals and Reference Value ...................301
On Board Diagnosis Logic ....................................302
DTC Confirmation Procedure ................................302
Overall Function Check .........................................303
Diagnostic Procedure ............................................303
Component Inspection ..........................................305
Removal and Installation .......................................306
DTC P1146 HO2S2 ..................................................307
Component Description ........................................307
CONSULT-II Reference Value in Data Monitor Mode
.307
ECM Terminals and Reference Value ...................307
On Board Diagnosis Logic ....................................307
DTC Confirmation Procedure ................................308
Overall Function Check .........................................308
Wiring Diagram .....................................................310
Diagnostic Procedure ............................................311
Component Inspection ..........................................312
Removal and Installation .......................................314
DTC P1147 HO2S2 ..................................................315
Component Description ........................................315
CONSULT-II Reference Value in Data Monitor Mode
.315
ECM Terminals and Reference Value ...................315
On Board Diagnosis Logic ....................................315
DTC Confirmation Procedure ................................316
Overall Function Check .........................................316
Wiring Diagram .....................................................318
Diagnostic Procedure ............................................319
Component Inspection ..........................................320
Removal and Installation .......................................322
DTC P1217 ENGINE OVER TEMPERATURE ........323
System Description ...............................................323
CONSULT-II Reference Value in Data Monitor Mode
.323
ECM Terminals and Reference Value ...................324
On Board Diagnosis Logic ....................................324
Overall Function Check .........................................325
Wiring Diagram .....................................................327
Diagnostic Procedure ............................................328
Main 12 Causes of Overheating ...........................335
Component Inspection ..........................................336
DTC P1225 TP SENSOR ........................................337
Component Description ........................................337
On Board Diagnosis Logic ....................................337
DTC Confirmation Procedure ................................337
Diagnostic Procedure ............................................338
Remove and Installation .......................................338
DTC P1226 TP SENSOR ........................................339
Component Description ........................................339
On Board Diagnosis Logic ....................................339
DTC Confirmation Procedure ................................339
Diagnostic Procedure ............................................340
Remove and Installation .......................................340
DTC P1229 SENSOR POWER SUPPLY ................341
On Board Diagnosis Logic ....................................341
DTC Confirmation Procedure ................................341

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ECA Wiring Diagram .................................................... 342
Diagnostic Procedure ........................................... 343
DTC P1706 PNP SWITCH ....

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ECA Wiring Diagram .................................................... 342
Diagnostic Procedure ........................................... 343
DTC P1706 PNP SWITCH ...................................... 345
Component Description ........................................ 345
CONSULT-II Reference Value in Data Monitor Mode
. 345
ECM Terminals and Reference Value .................. 345
On Board Diagnosis Logic ................................... 345
DTC Confirmation Procedure ............................... 345
Overall Function Check ........................................ 346
Wiring Diagram .................................................... 347
Diagnostic Procedure ........................................... 348
DTC P1805 BRAKE SWITCH ................................ 349
Description ........................................................... 349
CONSULT-II Reference Value in Data Monitor Mode
. 349
ECM Terminals and Reference Value .................. 349
On Board Diagnosis Logic ................................... 349
DTC Confirmation Procedure ............................... 349
Wiring Diagram .................................................... 351
Diagnostic Procedure ........................................... 352
Component Inspection ......................................... 353
DTC P2122, P2123 APP SENSOR ........................ 355
Component Description ........................................ 355
CONSULT-II Reference Value in Data Monitor Mode
. 355
ECM Terminals and Reference Value .................. 355
On Board Diagnosis Logic ................................... 356
DTC Confirmation Procedure ............................... 356
Wiring Diagram .................................................... 357
Diagnostic Procedure ........................................... 358
Component Inspection ......................................... 360
Remove and Installation ....................................... 360
DTC P2127, P2128 APP SENSOR ........................ 361
Component Description ........................................ 361
CONSULT-II Reference Value in Data Monitor Mode
. 361
ECM Terminals and Reference Value .................. 361
On Board Diagnosis Logic ................................... 362
DTC Confirmation Procedure ............................... 362
Wiring Diagram .................................................... 363
Diagnostic Procedure ........................................... 364
Component Inspection ......................................... 366
Remove and Installation ....................................... 366
DTC P2135 TP SENSOR ........................................ 367
Component Description ........................................ 367
CONSULT-II Reference Value in Data Monitor Mode
. 367
ECM Terminals and Reference Value .................. 367
On Board Diagnosis Logic ................................... 368
DTC Confirmation Procedure ............................... 368
Wiring Diagram ................................................
.... 369
Diagnostic Procedure ........................................... 370
Component Inspection ......................................... 372
Remove and Installation ....................................... 372
DTC P2138 APP SENSOR ..................................... 373
Component Description ........................................ 373
CONSULT-II Reference Value in Data Monitor Mode
. 373ECM Terminals and Reference Value ...................373
On Board Diagnosis Logic ....................................374
DTC Confirmation Procedure ...............................374
Wiring Diagram .....................................................375
Diagnostic Procedure ...........................................376
Component Inspection ..........................................378
Remove and Installation .......................................378
IGNITION SIGNAL ..................................................379
Component Description ........................................379
ECM Terminals and Reference Value ...................379
Wiring Diagram .....................................................380
Diagnostic Procedure ...........................................382
Component Inspection ..........................................386
Removal and Installation ......................................387
INJECTOR CIRCUIT ...............................................388
Component Description ........................................388
CONSULT-II Reference Value in Data Monitor Mode
.388
ECM Terminals and Reference Value ...................388
Wiring Diagram .....................................................389
Diagnostic Procedure ...........................................390
Component Inspection ..........................................392
Removal and Installation ......................................392
VIAS ........................................................................393
Description ............................................................393
CONSULT-II Reference Value in Data Monitor Mode
.394
ECM Terminals and Reference Value ...................394
Wiring Diagram .....................................................395
Diagnostic Procedure ...........................................396
Component Inspection ..........................................399
Removal and Installation ......................................400
START SIGNAL ......................................................401
CONSULT-II Reference Value in Data Monitor Mode
.401
ECM Terminals and Reference Value ...................401
Wiring Diagram .....................................................402
Diagnostic Procedure ...........................................403
FUEL PUMP CIRCUIT ............................................405
Description ............................................................405
CONSULT-II Reference Value in Data Monitor Mode
.405
ECM Terminals and Reference Value ..................
.405
Wiring Diagram .....................................................407
Diagnostic Procedure ...........................................408
Component Inspection ..........................................410
Removal and Installation ......................................411
REFRIGERANT PRESSURE SENSOR ..................412
Component Description ........................................412
ECM Terminals and Reference Value ...................412
Wiring Diagram .....................................................413
Diagnostic Procedure ...........................................414
Removal and Installation ......................................415
ELECTRICAL LOAD SIGNAL ................................416
CONSULT-II Reference Value in Data Monitor Mode
.416
ECM Terminals and Reference Value ...................416
Wiring Diagram .....................................................417
Diagnostic Procedure ...........................................419

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NISSAN X-TRAIL 2001 Service Repair Manual EC-6
DATA LINK CONNECTOR ......................................424
Wiring Diagram .....................................................424
EVAPORATIVE EMISSION SYSTEM .....................425
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EC-6
DATA LINK CONNECTOR ......................................424
Wiring Diagram .....................................................424
EVAPORATIVE EMISSION SYSTEM .....................425
Description ............................................................425
Component Inspection ..........................................427
POSITIVE CRANKCASE VENTILATION ...............428
Description ............................................................428
Component Inspection ..........................................428
SERVICE DATA AND SPECIFICATIONS (SDS) ....430
Fuel Pressure .......................................................430
Idle Speed and Ignition Timing .............................430
Calculated Load Value ..........................................430
Mass Air Flow Sensor ...........................................430
Intake Air Temperature Sensor .............................430
Engine Coolant Temperature Sensor ...................430
Heated Oxygen Sensor 1 Heater .........................430
Heated Oxygen sensor 2 Heater ..........................430
Crankshaft Position Sensor (POS) .......................430
Camshaft Position Sensor (PHASE) ....................431
Throttle Control Motor ...........................................431
Injector ..................................................................431
Fuel Pump ............................................................431
QR25(WITHOUT EURO-OBD)
INDEX FOR DTC .....................................................432
Alphabetical Index ................................................432
DTC No. Index ......................................................433
PRECAUTIONS .......................................................435
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................435
On Board Diagnostic (OBD) System of Engine and
A/T ........................................................................435
Precaution ............................................................435
Wiring Diagrams and Trouble Diagnosis ..............438
PREPARATION .......................................................439
Special Service Tools ...........................................439
Commercial Service Tools ....................................439
ENGINE CONTROL SYSTEM ................................441
System Diagram ...................................................441
Vacuum Hose Drawing .........................................442
System Chart ........................................................443
Multiport Fuel Injection (MFI) System ...................443
Electronic Ignition (EI) System .............................445
Air Conditioning Cut Control .................................446
Fuel Cut Control (at No Load and High Engine
Speed) ..................................................................447
CAN Communication ............................................447
BASIC SERVICE PROCEDURE .............................448
Idle Speed and Ignition Timing Check ..................448
Accelerator Pedal Released Position Learning ....449
Throttle Valve Closed Position Learning ...............449
Idle Air Volume Learning ......................................450
Fuel Pressure Check ............................................452
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........454
Introduction ...........................................................454
Two Trip Detection Logic ......................................454
Emission-related Diagnostic Information ..............454NATS (Nissan Anti-theft System) ..........................456
Malfunction Indicator (MI) .....................................457
TROUBLE DIAGNOSIS ..........................................460
Trouble Diagnosis Introduction .............................460
DTC Inspection Priority Chart ...............................463
Fail-safe Chart ......................................................464
Basic Inspection ....................................................465
Symptom Matrix Chart ..........................................469
Engine Control Component Parts Location ...........473
Circuit Diagram .....................................................477
ECM Harness Connector Terminal Layout ............479
ECM Terminals and Reference Value ...................479
CONSULT-II Function ...........................................486
CONSULT-II Reference Value in Data Monitor .....496
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................499
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .502
Description ............................................................502
Testing Condition ..................................................502
Inspection Procedure ........................................... .502
Diagnostic Procedure ............................................503
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................506
Description ............................................................506
Diagnostic Procedure ............................................506
POWER SUPPLY CIRCUIT FOR ECM ...................507
Wiring Diagram .....................................................507
ECM Terminals and Reference Value ...................508
Diagnostic Procedure ............................................508
Component Inspection ..........................................512
DTC U1000 CAN COMMUNICATION LINE ............513
Description ............................................................513
On Board Diagnosis Logic ....................................513
DTC Confirmation Procedure ................................513
Wiring Diagram .....................................................514
Diagnostic Procedure ............................................515
DTC P0102, P0103 MAF SENSOR .........................516
Component Description ........................................516
CONSULT-II Reference Value in Data Monitor Mode
.516
ECM Terminals and Reference Value ...................516
On Board Diagnosis Logic ....................................516
DTC Confirmation Procedure ................................517
Wiring Diagram .....................................................519
Diagnostic Procedure ............................................520
Component Inspection ..........................................522
Removal and Installation .......................................522
DTC P0117, P0118 ECT SENSOR ..........................523
Component Description ........................................523
On Board Diagnosis Logic ....................................523
DTC Confirmation Procedure ................................524
Wiring Diagram .....................................................525
Diagnostic Procedure ............................................526
Component Inspection ..........................................527
Removal and Installation .......................................527
DTC P0122, P0123 TP SENSOR ............................528
Component Description ........................................528
CONSULT-II Reference Value in Data Monitor Mode
.528

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ECA On Board Diagnosis Logic ................................... 528
DTC Confirmation Procedure ............................... 528
Wiring Diagram .......................

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ECA On Board Diagnosis Logic ................................... 528
DTC Confirmation Procedure ............................... 528
Wiring Diagram .................................................... 530
Diagnostic Procedure ........................................... 531
Component Inspection ......................................... 533
Remove and Installation ....................................... 533
DTC P0134 HO2S1 ................................................. 534
Component Description ........................................ 534
CONSULT-II Reference Value in Data Monitor Mode
. 534
ECM Terminals and Reference Value .................. 534
On Board Diagnosis Logic ................................... 535
DTC Confirmation Procedure ............................... 535
Wiring Diagram .................................................... 536
Diagnostic Procedure ........................................... 537
Component Inspection ......................................... 538
Removal and Installation ...................................... 539
DTC P0222, P0223 TP SENSOR ........................... 540
Component Description ........................................ 540
CONSULT-II Reference Value in Data Monitor Mode
. 540
ECM Terminals and Reference Value .................. 540
On Board Diagnosis Logic ................................... 541
DTC Confirmation Procedure ............................... 541
Wiring Diagram .................................................... 543
Diagnostic Procedure ........................................... 544
Component Inspection ......................................... 545
Remove and Installation ....................................... 545
DTC P0327, P0328 KS ........................................... 546
Component Description ........................................ 546
ECM Terminals and Reference Value .................. 546
On Board Diagnosis Logic ................................... 546
DTC Confirmation Procedure ............................... 546
Wiring Diagram .................................................... 548
Diagnostic Procedure ........................................... 549
Component Inspection ......................................... 550
Removal and Installation ...................................... 550
DTC P0335 CKP SENSOR (POS) .......................... 551
Component Description ........................................ 551
CONSULT-II Reference Value in Data Monitor Mode
. 551
ECM Terminals and Reference Value .................. 551
On Board Diagnosis Logic ................................... 552
DTC Confirmation Procedure ............................... 552
Wiring Diagram .................................................... 553
Diagnostic Procedure ........................................... 554
Component Inspection ......................................... 556
Removal and Installation ...................................... 556
DTC P0340 CMP SENSOR (PHASE) ..................... 557
Component Description .......................................
. 557
ECM Terminals and Reference Value .................. 557
On Board Diagnosis Logic ................................... 557
DTC Confirmation Procedure ............................... 558
Wiring Diagram .................................................... 559
Diagnostic Procedure ........................................... 560
Component Inspection ......................................... 562
Removal and Installation ...................................... 562
DTC P0500 VSS ..................................................... 563
Component Description ........................................ 563ECM Terminals and Reference Value ...................563
On Board Diagnosis Logic ....................................563
DTC Confirmation Procedure ...............................563
Overall Function Check ........................................564
Wiring Diagram .....................................................565
Diagnostic Procedure ...........................................567
DTC P0550 PSP SENSOR .....................................568
Component Description ........................................568
CONSULT-II Reference Value in Data Monitor Mode
.568
ECM Terminals and Reference Value ...................568
On Board Diagnosis Logic ....................................568
DTC Confirmation Procedure ...............................568
Wiring Diagram .....................................................570
Diagnostic Procedure ...........................................571
Component Inspection ..........................................572
DTC P0605 ECM .....................................................573
Component Description ........................................573
On Board Diagnosis Logic ....................................573
DTC Confirmation Procedure ...............................573
Diagnostic Procedure ...........................................575
DTC P0650 MI .........................................................576
Component Description ........................................576
On Board Diagnosis Logic ....................................576
DTC Confirmation Procedure ...............................576
Overall Function Check ........................................576
Wiring Diagram .....................................................577
Diagnostic Procedure ...........................................578
DTC P1065 ECM POWER SUPPLY .......................580
Component Description ........................................580
On Board Diagnosis Logic ....................................580
DTC Confirmation Procedure ...............................580
Wiring Diagram .....................................................581
Diagnostic Procedure ...........................................582
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR .............................................................584
Description ............................................................584
On Board Diagnosis Logic ....................................584
DTC Confirmation Procedure ...............................584
Diagnostic Procedure ...........................................585
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION ..............................................................586
Description ............................................................586
CONSULT-II Reference Value in Data Monitor Mode
.586
ECM Terminals and Reference Value ...................586
On Board Diagnosis Logic ....................................587
DTC Confirmation Procedure ...............................587
Wiring Diagram .....................................................588
Diagnostic Procedure ...........................................589
Remove and Installation .......................................592
DTC P1124, P1126 THROTTLE CONTROL MOTOR
RELAY .....................................................................593
Component Description ........................................593
CONSULT-II Reference Value in Data Monitor Mode
.593
ECM Terminals and Reference Value ...................593
On Board Diagnosis Logic ....................................593
DTC Confirmation Procedure ...............................593

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NISSAN X-TRAIL 2001 Service Repair Manual EC-8
Wiring Diagram .....................................................595
Diagnostic Procedure ...........................................596
Component Inspection ................................

EC-8
Wiring Diagram .....................................................595
Diagnostic Procedure ...........................................596
Component Inspection ..........................................597
DTC P1128 THROTTLE CONTROL MOTOR .........598
Component Description ........................................598
ECM Terminals and Reference Value ...................598
On Board Diagnosis Logic ....................................598
DTC Confirmation Procedure ...............................598
Wiring Diagram .....................................................600
Diagnostic Procedure ...........................................601
Component Inspection ..........................................602
Remove and Installation .......................................602
DTC P1217 ENGINE OVER TEMPERATURE ........603
System Description ...............................................603
CONSULT-II Reference Value in Data Monitor Mode
.603
ECM Terminals and Reference Value ...................604
On Board Diagnosis Logic ....................................604
Overall Function Check ........................................605
Wiring Diagram .....................................................607
Diagnostic Procedure ...........................................608
Main 12 Causes of Overheating ...........................615
Component Inspection ..........................................616
DTC P1225 TP SENSOR ........................................617
Component Description ........................................617
On Board Diagnosis Logic ....................................617
DTC Confirmation Procedure ...............................617
Diagnostic Procedure ...........................................618
Remove and Installation .......................................618
DTC P1226 TP SENSOR ........................................619
Component Description ........................................619
On Board Diagnosis Logic ....................................619
DTC Confirmation Procedure ...............................619
Diagnostic Procedure ...........................................620
Remove and Installation .......................................620
DTC P1229 SENSOR POWER SUPPLY ................621
On Board Diagnosis Logic ....................................621
DTC Confirmation Procedure ...............................621
Wiring Diagram .....................................................622
Diagnostic Procedure ...........................................623
DTC P1805 BRAKE SWITCH .................................625
Description ............................................................625
CONSULT-II Reference Value in Data Monitor Mode
.625
ECM Terminals and Reference Value ...................625
On Board Diagnosis Logic ....................................625
DTC Confirmation Procedure ...............................625
Wiring Diagram .....................................................627
Diagnostic Procedure ...........................................628
Component Inspection ..........................................629
DTC P2122, P2123 APP SENSOR .........................631
Component Description ........................................631
CONSULT-II Reference Value in Data Monitor Mode
.631
ECM Terminals and Reference Value ...................631
On Board Diagnosis Logic ....................................632
DTC Confirmation Procedure ...............................632
Wiring Diagram .....................................................633
Diagnostic Procedure ...........................................634Component Inspection ..........................................636
Remove and Installation .......................................636
DTC P2127, P2128 APP SENSOR .........................637
Component Description ........................................637
CONSULT-II Reference Value in Data Monitor Mode
.637
ECM Terminals and Reference Value ...................637
On Board Diagnosis Logic ....................................638
DTC Confirmation Procedure ................................639
Wiring Diagram .....................................................640
Diagnostic Procedure ............................................641
Component Inspection ..........................................643
Remove and Installation .......................................643
DTC P2135 TP SENSOR ........................................644
Component Description ........................................644
CONSULT-II Reference Value in Data Monitor Mode
.644
ECM Terminals and Reference Value ...................644
On Board Diagnosis Logic ....................................645
DTC Confirmation Procedure ................................645
Wiring Diagram .....................................................647
Diagnostic Procedure ............................................648
Component Inspection ..........................................650
Remove and Installation .......................................650
DTC P2138 APP SENSOR ......................................651
Component Description ........................................651
CONSULT-II Reference Value in Data Monitor Mode
.651
ECM Terminals and Reference Value ...................651
On Board Diagnosis Logic ....................................652
DTC Confirmation Procedure ................................652
Wiring Diagram .....................................................653
Diagnostic Procedure ............................................654
Component Inspection ..........................................656
Remove and Installation .......................................656
HO2S1 HEATER ......................................................657
Description ............................................................657
CONSULT-II Reference Value in Data Monitor Mode
.657
ECM Terminals and Reference Value ...................657
Wiring Diagram ....................................................
.658
Diagnostic Procedure ............................................659
Component Inspection ..........................................661
Removal and Installation .......................................661
HO2S2 HEATER ......................................................662
Description ............................................................662
CONSULT-II Reference Value in Data Monitor Mode
.662
ECM Terminals and Reference Value ...................662
Wiring Diagram .....................................................663
Diagnostic Procedure ............................................664
Component Inspection ..........................................666
Removal and Installation .......................................666
IAT SENSOR ...........................................................667
Component Description ........................................667
Wiring Diagram .....................................................668
Diagnostic Procedure ............................................669
Component Inspection ..........................................670
Removal and Installation .......................................670

Page 359 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-9
C
D
E
F
G
H
I
J
K
L
M
ECA HO2S1 .................................................................... 671
Component Description ........................................ 671
CONSULT-II Reference V

EC-9
C
D
E
F
G
H
I
J
K
L
M
ECA HO2S1 .................................................................... 671
Component Description ........................................ 671
CONSULT-II Reference Value in Data Monitor Mode
. 671
ECM Terminals and Reference Value .................. 671
Wiring Diagram .................................................... 672
Diagnostic Procedure ........................................... 673
Component Inspection ......................................... 674
Removal and Installation ...................................... 676
HO2S2 .................................................................... 677
Component Description ........................................ 677
CONSULT-II Reference Value in Data Monitor Mode
. 677
ECM Terminals and Reference Value .................. 677
Wiring Diagram .................................................... 678
Diagnostic Procedure ........................................... 679
Component Inspection ......................................... 680
Removal and Installation ...................................... 682
IGNITION SIGNAL .................................................. 683
Component Description ........................................ 683
ECM Terminals and Reference Value .................. 683
Wiring Diagram .................................................... 684
Diagnostic Procedure ........................................... 686
Component Inspection ......................................... 690
Removal and Installation ...................................... 691
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE ................................................. 692
Description ........................................................... 692
CONSULT-II Reference Value in Data Monitor Mode
. 692
ECM Terminals and Reference Value .................. 692
Wiring Diagram .................................................... 694
Diagnostic Procedure ........................................... 695
Component Inspection ......................................... 698
Removal and Installation ...................................... 698
IVT CONTROL SOLENOID VALVE ........................ 699
Description ........................................................... 699
CONSULT-II Reference Value in Data Monitor Mode
. 699
ECM Terminals and Reference Value .................. 700
Wiring Diagram .................................................... 701
Diagnostic Procedure ........................................... 702
Component Inspection ......................................... 704
Removal and Installation ...................................... 704
PNP SWITCH .......................................................... 705
Component Description ........................................ 705
CONSULT-II Reference Value in Data Monitor Mode
. 705
ECM Terminals and Reference Value .................. 705
Wiring Diagram ...................................................
. 706
Diagnostic Procedure ........................................... 707
INJECTOR CIRCUIT ............................................... 709
Component Description ........................................ 709
CONSULT-II Reference Value in Data Monitor Mode
. 709
ECM Terminals and Reference Value .................. 709
Wiring Diagram .................................................... 710
Diagnostic Procedure ............................................ 711Component Inspection ..........................................713
Removal and Installation ......................................713
VIAS ........................................................................714
Description ............................................................714
CONSULT-II Reference Value in Data Monitor Mode
.715
ECM Terminals and Reference Value ...................715
Wiring Diagram .....................................................716
Diagnostic Procedure ...........................................717
Component Inspection ..........................................720
Removal and Installation ......................................721
START SIGNAL ......................................................722
CONSULT-II Reference Value in Data Monitor Mode
.722
ECM Terminals and Reference Value ...................722
Wiring Diagram .....................................................723
Diagnostic Procedure ...........................................724
FUEL PUMP CIRCUIT ............................................726
Description ............................................................726
CONSULT-II Reference Value in Data Monitor Mode
.726
ECM Terminals and Reference Value ...................726
Wiring Diagram .....................................................728
Diagnostic Procedure ...........................................729
Component Inspection ..........................................731
Removal and Installation ......................................732
REFRIGERANT PRESSURE SENSOR ..................733
Component Description ........................................733
ECM Terminals and Reference Value ...................733
Wiring Diagram .....................................................734
Diagnostic Procedure ...........................................735
Removal and Installation ......................................736
ELECTRICAL LOAD SIGNAL ................................737
CONSULT-II Reference Value in Data Monitor Mode
.737
ECM Terminals and Reference Value ...................737
Wiring Diagram .....................................................738
Diagnostic Procedure ...........................................740
DATA LINK CONNECTOR ......................................745
Wiring Diagram .....................................................745
EVAPORATIVE EMISSION SYSTEM .....................746
Description ...................................................
.........746
Component Inspection ..........................................748
POSITIVE CRANKCASE VENTILATION ...............749
Description ............................................................749
Component Inspection ..........................................749
SERVICE DATA AND SPECIFICATIONS (SDS) ....751
Fuel Pressure .......................................................751
Idle Speed and Ignition Timing .............................751
Calculated Load Value ..........................................751
Mass Air Flow Sensor ...........................................751
Intake Air Temperature Sensor .............................751
Engine Coolant Temperature Sensor ...................751
Heated Oxygen Sensor 1 Heater .........................751
Heated Oxygen sensor 2 Heater ..........................751
Crankshaft Position Sensor (POS) .......................751
Camshaft Position Sensor (PHASE) ....................752
Throttle Control Motor ...........................................752

Page 360 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-10
Injector ..................................................................752
Fuel Pump ............................................................752
QR20(WITH EURO-OBD)
INDEX FOR DTC ....

EC-10
Injector ..................................................................752
Fuel Pump ............................................................752
QR20(WITH EURO-OBD)
INDEX FOR DTC .....................................................753
Alphabetical Index ................................................753
DTC No. Index ......................................................755
PRECAUTIONS .......................................................757
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................757
On Board Diagnostic (OBD) System of Engine and
A/T ........................................................................757
Precaution ............................................................757
Wiring Diagrams and Trouble Diagnosis ..............760
PREPARATION .......................................................761
Special Service Tools ...........................................761
Commercial Service Tools ....................................761
ENGINE CONTROL SYSTEM ................................763
System Diagram ...................................................763
Vacuum Hose Drawing .........................................764
System Chart ........................................................765
Multiport Fuel Injection (MFI) System ...................765
Electronic Ignition (EI) System .............................768
Air Conditioning Cut Control .................................768
Fuel Cut Control (at No Load and High Engine
Speed) ..................................................................769
CAN Communication ............................................769
BASIC SERVICE PROCEDURE .............................771
Idle Speed and Ignition Timing Check ..................771
Accelerator Pedal Released Position Learning ....772
Throttle Valve Closed Position Learning ...............772
Idle Air Volume Learning ......................................772
Fuel Pressure Check ............................................775
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........777
Introduction ...........................................................777
Two Trip Detection Logic ......................................777
Emission-related Diagnostic Information ..............778
NATS (Nissan Anti-theft System) ..........................790
Malfunction Indicator (MI) .....................................790
OBD System Operation Chart ..............................793
TROUBLE DIAGNOSIS ..........................................799
Trouble Diagnosis Introduction .............................799
DTC Inspection Priority Chart ...............................802
Fail-safe Chart ......................................................803
Basic Inspection ...................................................805
Symptom Matrix Chart ..........................................809
Engine Control Component Parts Location ..........813
Circuit Diagram .....................................................817
ECM Harness Connector Terminal Layout ...........819
ECM Terminals and Reference Value ...................819
CONSULT-II Function ...........................................826
Generic Scan Tool (GST) Function .......................836
CONSULT-II Reference Value in Data Monitor .....838
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................840
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .843
Description ............................................................843Testing Condition ..................................................843
Inspection Procedure ........................................... .843
Diagnostic Procedure ............................................844
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................847
Description ............................................................847
Diagnostic Procedure ............................................847
POWER SUPPLY CIRCUIT FOR ECM ...................848
Wiring Diagram .....................................................848
ECM Terminals and Reference Value ...................849
Diagnostic Procedure ............................................849
Component Inspection ..........................................853
DTC U1000 CAN COMMUNICATION LINE ............854
Description ............................................................854
On Board Diagnosis Logic ....................................854
DTC Confirmation Procedure ................................854
Wiring Diagram .....................................................855
Diagnostic Procedure ............................................856
DTC P0011 IVT CONTROL .....................................857
Description ............................................................857
CONSULT-II Reference Value in Data Monitor Mode
.857
ECM Terminals and Reference Value ...................857
On Board Diagnosis Logic ....................................858
DTC Confirmation Procedure ................................858
Diagnostic Procedure ............................................859
DTC P0031, P0032 HO2S1 HEATER ......................860
Description ............................................................860
CONSULT-II Reference Value in Data Monitor Mode
.860
ECM Terminals and Reference Value ...................860
On Board Diagnosis Logic ....................................861
DTC Confirmation Procedure ................................861
Wiring Diagram .....................................................862
Diagnostic Procedure ............................................863
Component Inspection ..........................................864
Removal and Installation .......................................864
DTC P0037, P0038 HO2S2 HEATER .....................
.865
Description ............................................................865
CONSULT-II Reference Value in Data Monitor Mode
.865
ECM Terminals and Reference Value ...................865
On Board Diagnosis Logic ....................................866
DTC Confirmation Procedure ................................866
Wiring Diagram .....................................................867
Diagnostic Procedure ............................................868
Component Inspection ..........................................869
Removal and Installation .......................................869
DTC P0102, P0103 MAF SENSOR .........................870
Component Description ........................................870
CONSULT-II Reference Value in Data Monitor Mode
.870
ECM Terminals and Reference Value ...................870
On Board Diagnosis Logic ....................................870
DTC Confirmation Procedure ................................871
Wiring Diagram .....................................................872
Diagnostic Procedure ............................................873
Component Inspection ..........................................874
Removal and Installation .......................................875

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