Nissan XTrail T30 2006 User Manual
ENGINE CONTROL SYSTEM
B ENGINE
A
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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
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
VIN Registration ..................................................... 77
Accelerator Pedal Released Pos i tio n Lear nin g ......77
Throttle Valve Closed Position Learning .................78
Idle Air Volume Learning ........................................78
Fuel Pressure Check ..............................................80
TROUBLE DIAGNOSIS ............................................83
Trouble Diagnosis Introduction ...............................83
DTC Inspection Priority Chart .................................89
Fail-Safe Chart ............................... ....... ...... ....... .... 91
Symptom Matrix Chart ............................................92
Engine Control Component Parts Location ............96
Vacuum Hose Drawing .......................... ...... ....... ..101
Circuit Diagram .....................................................102
ECM Harness Connector Terminal Layout ...........104
ECM Terminals and Reference Value ...................104
CONSULT-II Function (ENGI NE) ........................ ..112
Generic Scan Tool (GST) Function .......................125
CONSULT-II Reference Value in Data Monitor .....127
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................131
TROUBLE DIAGNOSIS - SPECIFICA TION V ALUE .133
Description ................... ...... ....... ...... ......................133
Testing Condition ..................................................133
Inspection Procedure ............................................133
Diagnostic Procedure ...........................................134
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .............................. .........................................143
Description ................... ...... ....... ...... ......................143
Diagnostic Procedure ...........................................143
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POWER SUPPLY AND GROUND CIRCUIT ...........144
Wiring Diagram .....................................................144
Diagnostic Procedure ...........................................145
Component Inspection ..........................................151
Ground Inspection ................................................151
DTC U1000, U1001 CAN COMMUNICATION LINE .152
Description ................ .......................... ..................152
On Board Diagnosis Logic ....................................152
DTC Confirmation Procedure ................... ....... .....152
Wiring Diagram .....................................................153
Diagnostic Procedure ...........................................154
DTC P0011 IVT CONTROL .....................................155
Description ................ .......................... ..................155
CONSULT-II Reference Value in Data Monitor Mode
.155
On Board Diagnosis Logic ....................................156
DTC Confirmation Procedure ................... ....... .....156
Diagnostic Procedure ...........................................157
Component Inspection ..........................................158
Removal and Installation ......................................158
DTC P0031, P0032 HO2S1 HEATER .....................159
Description ................ .......................... ..................159
CONSULT-II Reference Value in Data Monitor Mode
.159
On Board Diagnosis Logic ....................................159
DTC Confirmation Procedure ................... ....... .....160
Wiring Diagram .....................................................161
Diagnostic Procedure ...........................................163
Component Inspection ..........................................165
Removal and Installation ......................................165
DTC P0037, P0038 HO2S2 HEATER .....................166
Description ................ .......................... ..................166
CONSULT-II Reference Value in Data Monitor Mode
.166
On Board Diagnosis Logic ....................................166
DTC Confirmation Procedure ................... ....... .....167
Wiring Diagram .....................................................168
Diagnostic Procedure ...........................................170
Component Inspection ..........................................172
Removal and Installation ......................................172
DTC P0075 IVT CONTROL SOLENOID VALVE ....173
Component Description ........................................173
CONSULT-II Reference Value in Data Monitor Mode
.173
On Board Diagnosis Logic ....................................173
DTC Confirmation Procedure ................... ....... .....173
Wiring Diagram .....................................................174
Diagnostic Procedure ...........................................176
Component Inspection ..........................................177
Removal and Installation ......................................177
DTC P0101 MAF SENSOR .....................................178
Component Description ........................................178
CONSULT-II Reference Value in Data Monitor Mode
.178
On Board Diagnosis Logic ....................................178
DTC Confirmation Procedure ................... ....... .....178
Overall Function Check ........................................180
Wiring Diagram .....................................................181
Diagnostic Procedure ...........................................182
Component Inspection ..........................................185
Removal and Installation .......................................186
DTC P0102, P0103 MAF SENSOR .........................187
Component Description ........................................187
CONSULT-II Reference Value in Data Monitor Mode
.187
On Board Diagnosis Logic ....................................187
DTC Confirmation Procedure ................................187
Wiring Diagram ................................................... ..189
Diagnostic Procedure ............................................190
Component Inspection ..........................................193
Removal and Installation .......................................194
DTC P0112, P0113 IAT SENSOR ............................195
Component Description ........................................195
On Board Diagnosis Logic ....................................195
DTC Confirmation Procedure ................................195
Wiring Diagram ................................................... ..197
Diagnostic Procedure ............................................198
Component Inspection ..........................................200
Removal and Installation .......................................200
DTC P0117, P0118 ECT SENSOR ..........................201
Component Description ........................................201
On Board Diagnosis Logic ....................................201
DTC Confirmation Procedure ................................202
Wiring Diagram ................................................... ..203
Diagnostic Procedure ............................................204
Component Inspection ..........................................206
Removal and Installation .......................................206
DTC P0122, P0123 TP SENSOR ............................207
Component Description ........................................207
CONSULT-II Reference Value in Data Monitor Mode
.207
On Board Diagnosis Logic ....................................207
DTC Confirmation Procedure ................................208
Wiring Diagram ................................................... ..209
Diagnostic Procedure ............................................211
Component Inspection ..........................................214
Remove and Installation .......................................214
DTC P0125 ECT SENSOR ......................................215
Description ............................................................215
On Board Diagnosis Logic ....................................215
DTC Confirmation Procedure ................................215
Diagnostic Procedure ............................................216
Component Inspection ..........................................217
Removal and Installation .......................................217
DTC P0127 IAT SENSOR ........................................218
Component Description ........................................218
On Board Diagnosis Logic ....................................218
DTC Confirmation Procedure ................................218
Diagnostic Procedure ............................................219
Component Inspection ..........................................220
Removal and Installation .......................................220
DTC P0128 THERMOSTAT FUNCTION .................221
On Board Diagnosis Logic ....................................221
DTC Confirmation Procedure ................................221
Diagnostic Procedure ............................................221
Component Inspection ..........................................222
Removal and Installation .......................................222
DTC P0132 HO2S1 .................................................223
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Component Description ........................................ 223
CONSULT-II Reference Value in Data Monitor Mode
. 223
On Board Diagnosis Logic ................................... 223
DTC Confirmation Procedure ............................... 224
Wiring Diagram .................................................... 225
Diagnostic Procedure ........................................... 227
Component Inspection ......................................... 228
Removal and Installation ...................................... 230
DTC P0133 HO2S1 ................................................. 231
Component Description ........................................ 231
CONSULT-II Reference Value in Data Monitor Mode
. 231
On Board Diagnosis Logic ................................... 231
DTC Confirmation Procedure ............................... 232
Overall Function Check ........................................ 233
Wiring Diagram .................................................... 234
Diagnostic Procedure ........................................... 236
Component Inspection ......................................... 240
Removal and Installation ...................................... 241
DTC P0134 HO2S1 ................................................. 242
Component Description ........................................ 242
CONSULT-II Reference Value in Data Monitor Mode
. 242
On Board Diagnosis Logic ................................... 242
DTC Confirmation Procedure ............................... 243
Overall Function Check ........................................ 244
Wiring Diagram .................................................... 245
Diagnostic Procedure ........................................... 247
Component Inspection ......................................... 249
Removal and Installation ...................................... 250
DTC P0137 HO2S2 ................................................. 251
Component Description ........................................ 251
CONSULT-II Reference Value in Data Monitor Mode
. 251
On Board Diagnosis Logic ................................... 251
DTC Confirmation Procedure ............................... 252
Overall Function Check ........................................ 252
Wiring Diagram .................................................... 254
Diagnostic Procedure ........................................... 256
Component Inspection ......................................... 258
Removal and Installation ...................................... 259
DTC P0138 HO2S2 ................................................. 260
Component Description ........................................ 260
CONSULT-II Reference Value in Data Monitor Mode
. 260
On Board Diagnosis Logic ................................... 260
DTC Confirmation Procedure ............................... 261
Overall Function Check ........................................ 262
Wiring Diagram .................................................... 263
Diagnostic Procedure ........................................... 265
Component Inspection ......................................... 270
Removal and Installation ...................................... 271
DTC P0139 HO2S2 ................................................. 272
Component Description ........................................ 272
CONSULT-II Reference Value in Data Monitor Mode
. 272
On Board Diagnosis Logic ................................... 272
DTC Confirmation Procedure ............................... 273
Overall Function Check ........................................273
Wiring Diagram .....................................................275
Diagnostic Procedure ...........................................277
Component Inspection ..........................................279
Removal and Installation ......................................280
DTC P0171 FUEL INJECTION SYSTEM FUNCTION .281
On Board Diagnosis Logic ....................................281
DTC Confirmation Procedure ...............................281
Wiring Diagram .....................................................283
Diagnostic Procedure ...........................................285
DTC P0172 FUEL INJECTION SYSTEM FUNCTION .289
On Board Diagnosis Logic ....................................289
DTC Confirmation Procedure ...............................289
Wiring Diagram .....................................................291
Diagnostic Procedure ...........................................293
DTC P0181 FTT SENSOR .................................... ..296
Component Description ........................................296
On Board Diagnosis Logic ....................................296
DTC Confirmation Procedure ...............................296
Wiring Diagram .....................................................298
Diagnostic Procedure ...........................................299
Component Inspection ..........................................301
Removal and Installation ......................................301
DTC P0182, P0183 FTT SENSOR ........... ...... ....... ..302
Component Description ........................................302
On Board Diagnosis Logic ....................................302
DTC Confirmation Procedure ...............................302
Wiring Diagram .....................................................303
Diagnostic Procedure ...........................................304
Component Inspection ..........................................306
Removal and Installation ......................................306
DTC P0222, P0223 TP SENSOR ...... ....... ...... ....... ..307
Component Description ........................................307
CONSULT-II Reference Value in Data Monitor Mode
.307
On Board Diagnosis Logic ....................................307
DTC Confirmation Procedure ...............................308
Wiring Diagram .....................................................309
Diagnostic Procedure ...........................................311
Component Inspection ..........................................314
Remove and Installation .......................................314
DTC P0300 - P0304 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 4 CYLINDER MISFIRE .....................315
On Board Diagnosis Logic ....................................315
DTC Confirmation Procedure ...............................315
Diagnostic Procedure ...........................................316
DTC P0327, P0328 KS ..................... ....... ...... ....... ..322
Component Description ........................................322
On Board Diagnosis Logic ....................................322
DTC Confirmation Procedure ...............................322
Wiring Diagram .....................................................323
Diagnostic Procedure ...........................................324
Component Inspection ..........................................326
Removal and Installation ......................................326
DTC P0335 CKP SENSOR (POS) ........................ ..327
Component Description ........................................327
CONSULT-II Reference Value in Data Monitor Mode
.327
On Board Diagnosis Logic ....................................327
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DTC Confirmation Procedure ................... ....... .....328
Wiring Diagram .....................................................329
Diagnostic Procedure ...........................................331
Component Inspection ..........................................334
Removal and Installation ......................................334
DTC P0340 CMP SENSOR (PHASE) .....................335
Component Description ........................................335
On Board Diagnosis Logic ....................................335
DTC Confirmation Procedure ................... ....... .....336
Wiring Diagram .....................................................337
Diagnostic Procedure ...........................................338
Component Inspection ..........................................341
Removal and Installation ......................................342
DTC P0420 THREE WAY CATALYST FUNCTION . 343
On Board Diagnosis Logic ....................................343
DTC Confirmation Procedure ................... ....... .....343
Overall Function Check ........................................344
Diagnostic Procedure ...........................................345
DTC P0441 EVAP CONTROL SYSTEM .................348
System Description ...............................................348
On Board Diagnosis Logic ....................................348
DTC Confirmation Procedure ................... ....... .....349
Overall Function Check ........................................349
Diagnostic Procedure ...........................................350
DTC P0442 EVAP CONTROL SYSTEM .................354
On Board Diagnosis Logic ....................................354
DTC Confirmation Procedure ................... ....... .....355
Diagnostic Procedure ...........................................357
Component Inspection ..........................................363
DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ...............................364
Description ................ .......................... ..................364
CONSULT-II Reference Value in Data Monitor Mode
.364
On Board Diagnosis Logic ....................................365
DTC Confirmation Procedure ................... ....... .....365
Wiring Diagram .....................................................366
Diagnostic Procedure ...........................................368
Component Inspection ..........................................370
Removal and Installation ......................................371
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ......................372
Description ................ .......................... ..................372
CONSULT-II Reference Value in Data Monitor Mode
.372
On Board Diagnosis Logic ....................................373
DTC Confirmation Procedure ................... ....... .....373
Wiring Diagram .....................................................374
Diagnostic Procedure ...........................................376
Component Inspection ..........................................377
Removal and Installation ......................................378
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE .....................................................................379
Component Description ........................................379
CONSULT-II Reference Value in Data Monitor Mode
.379
On Board Diagnosis Logic ....................................379
DTC Confirmation Procedure ................... ....... .....380
Wiring Diagram .....................................................381
Diagnostic Procedure ............................................382
Component Inspection ..........................................384
DTC P0448 EVAP CANISTER VENT CONTROL
VALVE ............................. ............. ............. ............. ..386
Component Description ........................................386
CONSULT-II Reference Value in Data Monitor Mode
.386
On Board Diagnosis Logic ....................................386
DTC Confirmation Procedure ................................387
Wiring Diagram ................................................... ..388
Diagnostic Procedure ............................................389
Component Inspection ..........................................391
DTC P0451 EVAP CONTROL SYSTEM PRESSURE
SENSOR ............................... ...................................393
Component Description ........................................393
CONSULT-II Reference Value in Data Monitor Mode
.393
On Board Diagnosis Logic ....................................393
DTC Confirmation Procedure ................................394
Diagnostic Procedure ............................................394
Component Inspection ..........................................395
DTC P0452 EVAP CONTROL SYSTEM PRESSURE
SENSOR ............................... ...................................396
Component Description ........................................396
CONSULT-II Reference Value in Data Monitor Mode
.396
On Board Diagnosis Logic ....................................396
DTC Confirmation Procedure ................................397
Wiring Diagram ................................................... ..398
Diagnostic Procedure ............................................399
Component Inspection ..........................................402
DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR ............................... ...................................403
Component Description ........................................403
CONSULT-II Reference Value in Data Monitor Mode
.403
On Board Diagnosis Logic ....................................403
DTC Confirmation Procedure ................................404
Wiring Diagram ................................................... ..405
Diagnostic Procedure ............................................406
Component Inspection ..........................................410
DTC P0455 EVAP CONTROL SYSTEM .................411
On Board Diagnosis Logic ....................................411
DTC Confirmation Procedure ................................412
Diagnostic Procedure ............................................413
DTC P0456 EVAP CONTROL SYSTEM .................419
On Board Diagnosis Logic ....................................419
DTC Confirmation Procedure ................................420
Overall Function Check .........................................421
Diagnostic Procedure ............................................422
Component Inspection ..........................................429
DTC P0460 FUEL LEVEL SENSOR .......................430
Component Description ........................................430
On Board Diagnostic Logic ...................................430
DTC Confirmation Procedure ................................430
Diagnostic Procedure ............................................431
Removal and Installation .......................................431
DTC P0461 FUEL LEVEL SENSOR .......................432
Component Description ........................................432
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EC-4
On Board Diagnostic Logic ... ...... ....... ...... ....... ..... 432
Overall Function Check ........................................ 432
Diagnostic Procedure ........................................... 433
Removal and Installation ...................................... 433
DTC P0462, P0463 FUEL LEVEL SENSOR .......... 434
Component Description ........................................ 434
On Board Diagnostic Logic ... ...... ....... ...... ....... ..... 434
DTC Confirmation Procedure ............................... 434
Diagnostic Procedure ........................................... 435
Removal and Installation ...................................... 435
DTC P0500 VSS ..................................................... 436
Description ........................................................... 436
On Board Diagnosis Logic ................................... 436
DTC Confirmation Procedure ............................... 436
Overall Function Check ........................................ 437
Diagnostic Procedure ........................................... 437
DTC P0506 ISC SYSTEM ....................................... 438
Description ........................................................... 438
On Board Diagnosis Logic ................................... 438
DTC Confirmation Procedure ............................... 438
Diagnostic Procedure ........................................... 439
DTC P0507 ISC SYSTEM ....................................... 440
Description ........................................................... 440
On Board Diagnosis Logic ................................... 440
DTC Confirmation Procedure ............................... 440
Diagnostic Procedure ........................................... 441
DTC P0550 PSP SENSOR ..................................... 442
Component Description ........................................ 442
CONSULT-II Reference Value in Data Monitor Mode
. 442
On Board Diagnosis Logic ................................... 442
DTC Confirmation Procedure ............................... 442
Wiring Diagram .................................................... 443
Diagnostic Procedure ........................................... 444
Component Inspection ......................................... 446
Removal and Installation ...................................... 446
DTC P0603 ECM POWER SUPPLY ....................... 447
Component Description ........................................ 447
On Board Diagnosis Logic ................................... 447
DTC Confirmation Procedure ............................... 447
Wiring Diagram .................................................... 448
Diagnostic Procedure ........................................... 449
DTC P0605 ECM .................................................... 451
Component Description ........................................ 451
On Board Diagnosis Logic ................................... 451
DTC Confirmation Procedure ............................... 451
Diagnostic Procedure ........................................... 452
DTC P0643 SENSOR POWER SUPPLY ................ 454
On Board Diagnosis Logic ................................... 454
DTC Confirmation Procedure ............................... 454
Wiring Diagram .................................................... 455
Diagnostic Procedure ........................................... 457
DTC P0850 PNP SWITCH ...................................... 460
Component Description ........................................ 460
CONSULT-II Reference Value in Data Monitor Mode
. 460
On Board Diagnosis Logic ................................... 460
DTC Confirmation Procedure ............................... 460
Overall Function Check ........................................ 461
Wiring Diagram .....................................................462
Diagnostic Procedure ...........................................463
DTC P1143 HO2S1 ........................... ....... ...... ....... ..465
Component Description ........................................465
CONSULT-II Reference Value in Data Monitor Mode
.465
On Board Diagnosis Logic ....................................465
DTC Confirmation Procedure ...............................466
Overall Function Check ........................................466
Diagnostic Procedure ...........................................467
Component Inspection ..........................................469
Removal and Installation ......................................470
DTC P1144 HO2S1 ........................... ....... ...... ....... ..471
Component Description ........................................471
CONSULT-II Reference Value in Data Monitor Mode
.471
On Board Diagnosis Logic ....................................471
DTC Confirmation Procedure ...............................472
Overall Function Check ........................................472
Diagnostic Procedure ...........................................473
Component Inspection ..........................................475
Removal and Installation ......................................476
DTC P1148 CLOSED LOOP CONTROL ................477
On Board Diagnosis Logic ....................................477
DTC Confirmation Procedure ...............................477
Overall Function Check ........................................477
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 ...........................491
Component Inspection ..........................................492
DTC P1225 TP SENSOR ............................... ....... ..494
Component Description ........................................494
On Board Diagnosis Logic ....................................494
DTC Confirmation Procedure ...............................494
Diagnostic Procedure ...........................................495
Remove and Installation .......................................495
DTC P1226 TP SENSOR ............................... ....... ..496
Component Description ........................................496
On Board Diagnosis Logic ....................................496
DTC Confirmation Procedure ...............................496
Diagnostic Procedure ...........................................497
Remove and Installation .......................................497
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DTC P1564 ASCD STEERING SWITCH ................498
Component Description ........................................498
CONSULT-II Reference Value in Data Monitor Mode
.498
On Board Diagnosis Logic ....................................498
DTC Confirmation Procedure ................... ....... .....499
Wiring Diagram .....................................................500
Diagnostic Procedure ...........................................502
Component Inspection ..........................................505
DTC P1572 ASCD BRAKE SWITCH ......................506
Component Description ........................................506
CONSULT-II Reference Value in Data Monitor Mode
.506
On Board Diagnosis Logic ....................................506
DTC Confirmation Procedure ................... ....... .....507
Wiring Diagram .....................................................508
Diagnostic Procedure ...........................................510
Component Inspection ..........................................516
DTC P1574 ASCD VEHICLE SPEED SENSOR .....517
Component Description ........................................517
On Board Diagnosis Logic ....................................517
DTC Confirmation Procedure ................... ....... .....517
Diagnostic Procedure ...........................................518
DTC P1720 VSS ......................................................519
Description ................ .......................... ..................519
CONSULT-II Reference Value in Data Monitor Mode
.519
On Board Diagnosis Logic ....................................519
DTC Confirmation Procedure ................... ....... .....519
Diagnostic Procedure ...........................................520
DTC P1800 VIAS CONTROL SOLENOID VALVE ..521
Component Description ........................................521
CONSULT-II Reference Value in Data Monitor Mode
.521
On Board Diagnosis Logic ....................................521
DTC Confirmation Procedure ................... ....... .....521
Wiring Diagram .....................................................522
Diagnostic Procedure ...........................................523
Component Inspection ..........................................524
Removal and Installation ......................................525
DTC P1805 BRAKE SWITCH .................................526
Description ................ .......................... ..................526
CONSULT-II Reference Value in Data Monitor Mode
.526
On Board Diagnosis Logic ....................................526
DTC Confirmation Procedure ................... ....... .....526
Wiring Diagram .....................................................527
Diagnostic Procedure ...........................................528
Component Inspection ..........................................530
DTC P2100, P2103 THROTTLE CONTROL MOTOR
RELAY ...... .......................................................... .....531
Component Description ........................................531
CONSULT-II Reference Value in Data Monitor Mode
.531
On Board Diagnosis Logic ....................................531
DTC Confirmation Procedure ................... ....... .....531
Wiring Diagram .....................................................533
Diagnostic Procedure ...........................................535
Component Inspection ..........................................537
DTC P2101 ELECTRIC THROTTLE CONTROL
FUNCTION ..............................................................538
Description ............................................................538
On Board Diagnosis Logic ....................................538
DTC Confirmation Procedure ................................538
Wiring Diagram ................................................... ..539
Diagnostic Procedure ............................................541
Component Inspection ..........................................545
Remove and Installation .......................................545
DTC P2118 THROTTLE CONTROL MOTOR .........546
Component Description ........................................546
On Board Diagnosis Logic ....................................546
DTC Confirmation Procedure ................................546
Wiring Diagram ................................................... ..547
Diagnostic Procedure ............................................549
Component Inspection ..........................................550
Removal and Installation .......................................550
DTC P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR .............................................................551
Component Description ........................................551
On Board Diagnosis Logic ....................................551
DTC Confirmation Procedure ................................551
Diagnostic Procedure ............................................552
DTC P2122, P2123 APP SENSOR .........................553
Component Description ........................................553
CONSULT-II Reference Value in Data Monitor Mode
.553
On Board Diagnosis Logic ....................................553
DTC Confirmation Procedure ................................554
Wiring Diagram ................................................... ..555
Diagnostic Procedure ............................................557
Component Inspection ..........................................559
Removal and Installation .......................................559
DTC P2127, P2128 APP SENSOR .........................560
Component Description ........................................560
CONSULT-II Reference Value in Data Monitor Mode
.560
On Board Diagnosis Logic ....................................560
DTC Confirmation Procedure ................................561
Wiring Diagram ................................................... ..562
Diagnostic Procedure ............................................564
Component Inspection ..........................................567
Remove and Installation .......................................567
DTC P2135 TP SENSOR ........................................568
Component Description ........................................568
CONSULT-II Reference Value in Data Monitor Mode
.568
On Board Diagnosis Logic ....................................568
DTC Confirmation Procedure ................................569
Wiring Diagram ................................................... ..570
Diagnostic Procedure ............................................572
Component Inspection ..........................................575
Remove and Installation .......................................575
DTC P2138 APP SENSOR ......................................576
Component Description ........................................576
CONSULT-II Reference Value in Data Monitor Mode
.576
On Board Diagnosis Logic ....................................576
DTC Confirmation Procedure ................................577
Revision: 2006 July 2006 X-Trail
EC-6
Wiring Diagram .................................................... 578
Diagnostic Procedure ........................................... 580
Component Inspection ......................................... 583
Remove and Installation ....................................... 583
ASCD BRAKE SWITCH ......................................... 584
Component Description ........................................ 584
CONSULT-II Reference Value in Data Monitor Mode
. 584
Wiring Diagram .................................................... 585
Diagnostic Procedure ........................................... 587
Component Inspection ......................................... 592
ASCD INDICATOR ................................................. 594
Component Description ........................................ 594
CONSULT-II Reference Value in Data Monitor Mode
. 594
Wiring Diagram .................................................... 595
Diagnostic Procedure ........................................... 597
ELECTRICAL LOAD SIGNAL ................................ 598
CONSULT-II Reference Value in Data Monitor Mode
. 598
Wiring Diagram .................................................... 599
Diagnostic Procedure ........................................... 600
Wiring Diagram .................................................... 605
Diagnostic Procedure ........................................... 606
Wiring Diagram .................................................... 608
Diagnostic Procedure ........................................... 609
FUEL INJECTOR .....................................................611
Component Description .........................................61 1
CONSULT-II Reference Value in Data Monitor Mode
..611
Wiring Diagram .................................................... 612
Diagnostic Procedure ........................................... 613
Component Inspection ......................................... 616
Removal and Installation ...................................... 616
FUEL PUMP ........................................................... 617
Description ........................................................... 617
CONSULT-II Reference Value in Data Monitor Mode
. 617
Wiring Diagram .................................................... 618
Diagnostic Procedure ........................................... 619
Component Inspection ......................................... 622
Removal and Installation ...................................... 622
IGNITION SIGNAL ............................ ....... ...... ....... ..623
Component Description ........................................623
Wiring Diagram .....................................................624
Diagnostic Procedure ...........................................627
Component Inspection ..........................................632
Removal and Installation ......................................633
REFRIGERANT PRESSURE SENSOR ..................634
Component Description ........................................634
Wiring Diagram .....................................................635
Diagnostic Procedure ...........................................636
Removal and Installation ......................................639
SNOW MODE SWITCH .............. ...... ....... ...... .........640
Description ................... ...... ....... ...... ......................640
CONSULT-II Reference Value in the Data Monitor
Mode .....................................................................640
Wiring Diagram .....................................................641
Diagnostic Procedure ...........................................643
Component Inspection ..........................................646
VIAS ........................................................................647
Description ................... ...... ....... ...... ......................647
CONSULT-II Reference Value in Data Monitor Mode
.648
Wiring Diagram .....................................................649
Diagnostic Procedure ...........................................651
Component Inspection ..........................................655
Removal and Installation ......................................656
MIL AND DATA LINK CONNECTOR ......................657
Wiring Diagram .....................................................657
SERVICE DATA AND SPECIFICATIONS (SDS) ....661
Fuel Pressure .......................................................661
Idle Speed and Ignition Timing .............. ...... ....... ..661
Calculated Load Value ..........................................661
Mass Air Flow Sensor ...........................................661
Intake Air Temperature Sensor .............................661
Engine Coolant Temperature Sensor ...................661
Heated Oxygen Sensor 1 Heater .........................661
Heated Oxygen Sensor 2 Heater .........................661
Crankshaft Position Sensor (POS) .......................661
Camshaft Position Sensor (PHASE) ....................661
Throttle Control Motor ............... ...... ....... ...............662
Fuel Injector ..........................................................662
Fuel Pump ............................................................662
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Revision: 2006 July 2006 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-152, "
DTC*1
CONSULT-II
2
GST*
No DTC
U1000
U1001
P0000 0000
P0011 0011 INT/V TIM CONT-B1 EC-155
P0031 0031 HO2S1 HTR (B1) EC-159
P0032 0032 HO2S1 HTR (B1) EC-159
P0037 0037 HO2S2 HTR (B1) EC-166
P0038 0038 HO2S2 HTR (B1) EC-166
P0075 0075 INT/V TIM V/CIR-B1 EC-173
P0101 0101 MAF SEN/CIRCUIT EC-178
P0102 0102 MAF SEN/CIRCUIT EC-187
P0103 0103 MAF SEN/CIRCUIT EC-187
P0112 0112 IAT SEN/CIRCUIT EC-195
P0113 0113 IAT SEN/CIRCUIT EC-195
P011 7 0117 ECT SEN/CIRC EC-201
P011 8 0118 ECT SEN/CIRC EC-201
P0122 0122 TP SEN 2/CIRC EC-207
P0123 0123 TP SEN 2/CIRC EC-207
P0125 0125 ECT SENSOR EC-215
P0127 0127 IAT SENSOR EC-218
P0128 0128 THERMSTAT FNCTN EC-221
P0132 0132 HO2S1 (B1) EC-223
P0133 0133 HO2S1 (B1) EC-231
P0134 0134 HO2S1 (B1) EC-242
P0137 0137 HO2S2 (B1) EC-251
P0138 0138 HO2S2 (B1) EC-260
P0139 0139 HO2S2 (B1) EC-272
P0171 0171 FUEL SYS-LEAN-B1 EC-281
P0172 0172 FUEL SYS-RICH-B1 EC-289
P0181 0181 FTT SENSOR EC-296
P0182 0182 FTT SEN/CIRCUIT EC-302
P0183 0183 FTT SEN/CIRCUIT EC-302
P0222 0222 TP SEN 1/CIRC EC-307
P0223 0223 TP SEN 1/CIRC EC-307
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-152
CAN COMM CIRCUIT EC-152
NO DTC IS DETECTED.
FURTHER TESTING
MA Y BE REQUIRED .
(CONSULT-II screen terms)
Reference page
EC-62
—
Revision: 2006 July 2006 X-Trail
EC-8
INDEX FOR DTC
DTC*1
CONSULT-II
2
GST*
P0300 0300 MULTI CYL MISFIRE EC-315
P0301 0301 CYL 1 MISFIRE EC-315
P0302 0302 CYL 2 MISFIRE EC-315
P0303 0303 CYL 3 MISFIRE EC-315
P0304 0304 CYL 4 MISFIRE EC-315
P0327 0327 KNOCK SEN/CIRC-B1 EC-322
P0328 0328 KNOCK SEN/CIRC-B1 EC-322
P0335 0335 CKP SEN/CIRCUIT EC-327
P0340 0340 CMP SEN/CIRC-B1 EC-335
P0420 0420 TW CATALYST SYS-B1 EC-343
P0441 0441 EVAP PURG FLOW/MON EC-348
P0442 0442 EVAP SMALL LEAK EC-354
P0443 0443 PURG VOLUME CONT/V EC-364
P0444 0444 PURG VOLUME CONT/V EC-372
P0445 0445 PURG VOLUME CONT/V EC-372
P0447 0447 VENT CONTROL VALVE EC-379
P0448 0448 VENT CONTROL VALVE EC-386
P0451 0451 EVAP SYS PRES SEN EC-393
P0452 0452 EVAP SYS PRES SEN EC-396
P0453 0453 EVAP SYS PRES SEN EC-403
P0455 0455 EVAP GROSS LEAK EC-411
P0456 0456 EVAP VERY SML LEAK EC-419
P0460 0460 FUEL LEV SEN SLOSH EC-430
P0461 0461 FUEL LEVEL SENSOR EC-432
P0462 0462 FUEL LEVL SEN/CIRC EC-434
P0463 0463 FUEL LEVL SEN/CIRC EC-434
P0500 0500
P0506 0506 ISC SYSTEM EC-438
P0507 0507 ISC SYSTEM EC-440
P0550 0550 PW ST P SEN/CIRC EC-442
P0603 0603 ECM BACK UP/CIRC EC-447
P0605 0605 ECM EC-451
P0643 0643 SENSOR POWER/CIRC EC-454
P0705 0705 PNP SW/CIRC AT-95
P0710 0710 ATF TEMP SEN/CIRC AT-100
P0720 0720
P0725 0725 ENGINE SPEED SIG AT-111
P0731 0731 A/T 1ST GR FNCTN AT-115
P0732 0732 A/T 2ND GR FNCTN AT-120
P0733 0733 A/T 3RD GR FNCTN AT-125
P0734 0734 A/T 4TH GR FNCTN AT-130
P0740 0740 TCC SOLENOID/CIRC AT-137
ECM*
3
VEH SPEED SEN/CIRC*
VEH SPD SEN/CIR AT*
(CONSULT-II screen terms)
5
Items
5
Reference page
EC-436
AT-105
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Revision: 2006 July 2006 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 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 -diagnoses occur, the MIL illuminates.
*6: When engine is running.
2
GST*
P0744 0744 A/T TCC S/V FNCTN AT-142
P0745 0745 L/PRESS SOL/CIRC AT-150
P0750 0750 SFT SOL A/CIRC AT- 156
P0755 0755 SFT SOL B/CIRC AT- 161
P0850 0850 P-N POS SW/CIRCUIT EC-460
P1143 1 1 43 HO2S1 (B1) EC-465
P1144 1 1 44 HO2S1 (B1) EC-471
P1148 1148 CLOSED LOOP-B1 EC-477
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-494
P1226 1226 CTP LEARNING EC-496
P1564 1564 ASCD SW EC-498
P1572 1572 ASCD BRAKE SW EC-506
P1574 1574 ASCD VHL SPD SEN EC-517
P1705 1705 TP SEN/CIRC A/T AT-166
P1720 1720 V/SP SEN (A/T OUT) EC-519
P1760 1760 O/R CLTCH SOL/CIRC AT-171
P1800 1800 VIAS S/V CIRC EC-521
P1805 1805 BRAKE SW/CIRCUIT EC-526
P2100 2100 ETC MOT PWR EC-531
P2101 2101 ETC FUNCTION/CIRC EC-538
P2103 2103 ETC MOT PWR EC-531
P2118 2118 ETC MOT EC-546
P2119 2119 ETC ACTR EC-551
P2122 2122 APP SEN 1/CIRC EC-553
P2123 2123 APP SEN 1/CIRC EC-553
P2127 2127 APP SEN 2/CIRC EC-560
P2128 2128 APP SEN 2/CIRC EC-560
P2135 2135 TP SENSOR EC-568
P2138 2138 APP SENSOR EC-576
ECM*
3
(CONSULT-II screen terms)
Items
Reference page
Revision: 2006 July 2006 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-152, "
(CONSULT-II screen terms)
A/T 1ST GR FNCTN P0731 0731 AT-115
A/T 2ND GR FNCTN P0732 0732 AT-120
A/T 3RD GR FNCTN P0733 0733 AT-125
A/T 4TH GR FNCTN P0734 0734 AT-130
A/T TCC S/V FNCTN P0744 0744 AT-142
APP SEN 1/CIRC P2122 2122 EC-553
APP SEN 1/CIRC P2123 2123 EC-553
APP SEN 2/CIRC P2127 2127 EC-560
APP SEN 2/CIRC P2128 2128 EC-560
APP SENSOR P2138 2138 EC-576
ASCD BRAKE SW P1572 1572 EC-506
ASCD SW P1564 1564 EC-498
ASCD VHL SPD SEN P1574 1574 EC-517
ATF TEMP SEN/CIRC P0710 0710 AT-100
BRAKE SW/CIRCUIT P1805 180 5 EC-526
CAN COMM CIRCUIT U1000
CAN COMM CIRCUIT U1001
CKP SEN/CIRCUIT P0335 0335 EC-327
CLOSED LOOP-B1 P1148 1148 EC-477
CMP SEN/CIRC-B1 P0340 0340 EC-335
CTP LEARNING P1225 1225 EC-494
CTP LEARNING P1226 1226 EC-496
CYL 1 MISFIRE P0301 0301 EC-315
CYL 2 MISFIRE P0302 0302 EC-315
CYL 3 MISFIRE P0303 0303 EC-315
CYL 4 MISFIRE P0304 0304 EC-315
ECM P0605 060 5 EC-451
ECM BACK UP/CIRC P0603 0603 EC-447
ECT SEN/CIRC P0117 0117 EC-201
ECT SEN/CIRC P0118 0118 EC-201
ECT SENSOR P0125 0125 EC-215
ENG OVER TEMP P1217 1217 EC-480
ENGINE SPEED SIG P0725 0725 AT-111
ETC ACTR P2119 2119 EC-551
ETC FUNCTION/CIRC P2101 2101 EC-538
ETC MOT P2118 2118 EC-546
ETC MOT PWR P2103 2103 EC-531
ETC MOT PWR P2100 2100 EC-531
EVAP GROSS LEAK P0455 0455 EC-411
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
CONSULT-II
GST*
DTC*1
2
ECM*
1000*
1001*
3
4
4
Reference page
EC-152
EC-152
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Revision: 2006 July 2006 X-Trail
EC-11
INDEX FOR DTC
Items
(CONSULT-II screen terms)
EVAP PURG FLOW/MON P0441 0441 EC-348
EVAP SMALL LEAK P0442 0442 EC-354
EVAP SYS PRES SEN P0451 0451 EC-393
EVAP SYS PRES SEN P0452 0452 EC-396
EVAP SYS PRES SEN P0453 0453 EC-403
EVAP VERY SML LEAK P0456 0456 EC-419
FTT SEN/CIRCUIT P0182 0182 EC-302
FTT SEN/CIRCUIT P0183 0183 EC-302
FTT SENSOR P0181 0181 EC-296
FUEL LEV SEN SLOSH P0460 0460 EC-430
FUEL LEVEL SENSOR P0461 0 461 EC-432
FUEL LEVL SEN/CIRC P0462 0462 EC-434
FUEL LEVL SEN/CIRC P0463 0463 EC-434
FUEL SYS-LEAN-B1 P0171 0171 EC-281
FUEL SYS-RICH-B1 P0172 0172 EC-289
HO2S1 (B1) P0132 0132 EC-223
HO2S1 (B1) P0133 0133 EC-231
HO2S1 (B1) P0134 0134 EC-242
HO2S1 (B1) P1143 1143 EC-465
HO2S1 (B1) P1144 1144 EC-471
HO2S1 HTR (B1) P0031 0031 EC-159
HO2S1 HTR (B1) P0032 0032 EC-159
HO2S2 (B1) P0137 0137 EC-251
HO2S2 (B1) P0138 0138 EC-260
HO2S2 (B1) P0139 0139 EC-272
HO2S2 HTR (B1) P0037 0037 EC-166
HO2S2 HTR (B1) P0038 0038 EC-166
IAT SEN/CIRCUIT P0112 0112 EC-195
IAT SEN/CIRCUIT P0113 0113 EC-195
IAT SENSOR P0127 0127 EC-218
INT/V TIM CONT-B1 P0011 0011 EC-155
INT/V TIM V/CIR-B1 P0075 0075 EC-173
ISC SYSTEM P0506 0506 EC-438
ISC SYSTEM P0507 0507 EC-440
KNOCK SEN/CIRC-B1 P0327 0 327 EC-322
KNOCK SEN/CIRC-B1 P0328 0 328 EC-322
L/PRESS SOL/CIRC P0745 0 745 AT-150
MAF SEN/CIRCUIT P0101 0101 EC-178
MAF SEN/CIRCUIT P0102 0102 EC-187
MAF SEN/CIRCUIT P0103 0103 EC-187
MULTI CYL MISFIRE P0300 0300 EC-315
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EC-46
CONSULT-II
GST*
DTC*1
3
2
ECM*
Reference page
Revision: 2006 July 2006 X-Trail
EC-12
INDEX FOR DTC
Items
(CONSULT-II screen terms)
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-171
P-N POS SW/CIRCUIT P0850 0850 EC-460
PNP SW/CIRC P0705 0705 AT-95
PURG VOLUME CONT/V P0444 0444 EC-372
PURG VOLUME CONT/V P0445 0445 EC-372
PURG VOLUME CONT/V P0443 0443 EC-364
PW ST P SEN/CIRC P0550 0550 EC-442
SENSOR POWER/CIRC P0643 0643 EC-454
SFT SOL A/CIRC P0750 0750 AT-156
SFT SOL B/CIRC P0755 0755 AT-161
TCC SOLENOID/CIRC P0740 0740 AT-137
TCS C/U FUNCTIION P1211 1211 EC-478
TCS/CIRC P1212 1212 EC-479
THERMSTAT FNCTN P0128 0128 EC-221
TP SEN 1/CIRC P0222 0222 EC-307
TP SEN 1/CIRC P0223 0223 EC-307
TP SEN 2/CIRC P0122 0122 EC-207
TP SEN 2/CIRC P0123 0123 EC-207
TP SENSOR P2135 2135 EC-568
TP SEN/CIRC A/T P1705 1705 AT-166
TW CATALYST SYS-B1 P0420 0420 EC-343
V/SP SEN (A/T OUT) P1720 1720 EC-519
VEH SPD SEN/CIR AT*
VEH SPEED SEN/CIRC*
VENT CONTROL VALVE P0447 0447 EC-379
VENT CONTROL VALVE P0448 0448 EC-386
VIAS S/V CIRC P1800 1800 EC-521
*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-105
P0500 0500 EC-436
DTC*1
3
2
ECM*
Flashing*
6
Reference page
EC-62
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Revision: 2006 July 2006 X-Trail
EC-13
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEA T
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 Air
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 harnesses 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 us e a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-46, "
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: 2006 July 2006 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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PBIB1164E
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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-104, "
ECM Terminals and Refere nc 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: 2006 July 2006 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. Doing so may 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: 2006 July 2006 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.
● 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.
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Revision: 2006 July 2006 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: 2006 July 2006 X-Trail
EC-18
PREPARATION
Tool number
(Kent-Moore No.)
Tool name
KV109E0010
(J-46209)
Break-out box
S-NT825
KV109E0080
(J-45819)
Y- cabl e 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: 2006 July 2006 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: 2006 July 2006 X-Trail
EC-20
ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM PFP:23710
System Diagram ABS00CKT
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PBIB2361E
Revision: 2006 July 2006 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.
1
Engine speed*
Piston position
Density of oxygen in exhaust gas
Vehicle speed*
Battery voltage*
3
2
3
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: 2006 July 2006 X-Trail
EC-22
ENGINE CONTROL SYSTEM
MIXTURE RATIO FEEDBACK CONTRO L (CLO SED LO OP CONTRO L)
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PBIB2953E
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-223, "
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 dif fer e nc e b etw ee n th e ba si c a nd the or e tica l mi xt ure ra ti os i s m on it ore d in t his sys te m. T his 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: 2006 July 2006 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 fuel 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-safe system (CPU) is operating.
FUEL SHUT-OFF
Fuel to each cylinder is cut off during deceleration or operation of t he 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.
Engine speed*
Piston position
Vehicle 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 air-fuel rati o f o r e ve ry r unn ing co nd it ion 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: 2006 July 2006 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 spe ed*
*: 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 i s di f f er ent f rom d ece l era ti on cont r ol li st ed un der EC-22, "
ECM func-
tion
Fuel cut
control
Fuel injector
Actuator
Multiport Fuel Injection (MFI) System" .
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Revision: 2006 July 2006 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.
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
1
2
Air conditioner relay
Revision: 2006 July 2006 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) Powe rtrain re volut ion*
*: 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. )
ACCELERATE 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/COA ST 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: 2006 July 2006 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 vehi cl e se t spe ed , v ehic le condi t io n
must meet following conditions.
● Brake pedal is fully released.
● Clutch pedal is fully 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-498 .
ASCD BRAKE SWITCH
Refer to EC-506 and EC-584 .
ASCD CLUTCH SWITCH
Refer to EC-506 .
STOP LAMP SWITCH
Refer to EC-506 , EC-526 and EC-584 .
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EC-531 , EC-538 , EC-546 and EC-551 .
ASCD INDICATOR
Refer to EC-594 .
Revision: 2006 July 2006 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-21, "
CAN Communication Unit" , about CAN communication for detail.
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Revision: 2006 July 2006 X-Trail
EC-29
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION SYSTE M 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: 2006 July 2006 X-Trail
EC-30
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