ENGINE CONTROL SYSTEM
B ENGINE
A
EC
SECTION EC
INDEX FOR DTC ........................................................ 9
DTC No. Index ......................................................... 9
Alphabetical Index .................................................. 13
PRECAUTIONS ........................................................ 17
Precautions for Supplemental Rest raint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 17
On Board Diagnostic (OBD) System of Engine and
A/T ............................ ............. ............. ............. ....... 17
Precaution ...................... ........................................ 17
PREPARATION ......................................................... 21
Special Service Tools ............................................. 21
Commercial Service Tools ...................................... 22
ENGINE CONTROL SYSTEM .................................. 23
System Diagram ..................................................... 23
Multiport Fuel Injection (MFI) System .................... 24
Electronic Ignition (EI) System ............................... 26
Fuel Cut Control (at No Load and High Engine
Speed) ...................... ............. ............. ............. ....... 27
AIR CONDITIONING CUT CONTROL ..................... 28
Input/Output Signal Chart ................................ ....... 28
System Description ................................................ 28
AUTOMA TIC SPEED CONTROL DEVICE (ASCD) ... 29
System Description ................................................ 29
Component Description .......................................... 30
CAN COMMUNICATION .......................................... 31
System Description ................................................ 31
EV APORATIVE EMISSION SYSTEM ....................... 32
Description ............................................................. 32
Component Inspection ........................................... 35
How to Detect Fuel Vapor Leakage ....................... 36
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ..................................... ...... ....... ...... ....... ....... 38
System Description ................................................ 38
Diagnostic Procedure ............................................. 39
Component Inspection ........................................... 41
POSITIVE CRANKCASE VENTILATION ................. 44
Description ............................................................. 44
Component Inspection ........................................... 44
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
ENGINE CONTROL SYSTEM
CONTENTS
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) ...........................63
OBD System Operation Chart ................................66
BASIC SERVICE PROCEDURE ........................... .... 71
Basic Inspection ..................................................... 71
Idle Speed and Ignition Timing Check ....................76
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 ............................................82
Trouble Diagnosis Introduction ...............................82
DTC Inspection Priority Chart .................................88
Fail-Safe Chart ............................... ....... ...... ....... .... 90
Symptom Matrix Chart ............................................91
Engine Control Component Parts Location ............95
Vacuum Hose Drawing .......................... ...... ....... ..102
Circuit Diagram .....................................................103
ECM Harness Connector Terminal Layout ...........105
ECM Terminals and Reference Value ...................105
CONSULT-II Function (ENGI NE) ..........................115
Generic Scan Tool (GST) Function .......................127
CONSULT-II Reference Value in Data Monitor Mode
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................133
TROUBLE DIAGNOSIS - SPECIFICA TION V ALUE .135
Description ................... ...... ....... ...... ......................135
Testing Condition ..................................................135
Inspection Procedure ............................................135
Diagnostic Procedure ...........................................136
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .............................. .........................................145
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Description ................ .......................... ..................145
Diagnostic Procedure ...........................................145
POWER SUPPLY AND GROUND CIRCUIT ...........146
Wiring Diagram .....................................................146
Diagnostic Procedure ...........................................149
Ground Inspection ................................................154
Component Inspection ..........................................155
DTC U1000, U1001 CAN COMMUNICATION LINE .156
Description ................ .......................... ..................156
On Board Diagnosis Logic ....................................156
DTC Confirmation Procedure ................... ....... .....156
Wiring Diagram .....................................................157
Diagnostic Procedure ...........................................158
DTC U1010 CAN COMMUNICATION .....................159
Description ................ .......................... ..................159
On Board Diagnosis Logic ....................................159
DTC Confirmation Procedure ................... ....... .....159
Diagnostic Procedure ...........................................160
DTC P0011, P0021 IVT CONTROL ........................161
Description ................ .......................... ..................161
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................162
DTC Confirmation Procedure ................... ....... .....163
Wiring Diagram .....................................................164
Diagnostic Procedure ...........................................167
Component Inspection ..........................................171
Removal and Installation ......................................172
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER ..................................................................173
Description ................ .......................... ..................173
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................173
DTC Confirmation Procedure ................... ....... .....173
Wiring Diagram .....................................................174
Diagnostic Procedure ...........................................177
Component Inspection ..........................................179
Removal and Installation ......................................179
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .180
Description ................ .......................... ..................180
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................180
DTC Confirmation Procedure ................... ....... .....181
Wiring Diagram .....................................................182
Diagnostic Procedure ...........................................185
Component Inspection ..........................................187
Removal and Installation ......................................187
DTC P0075, P0081 IVT CONTROL SOLENOID
VALVE .....................................................................188
Component Description ........................................188
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................188
DTC Confirmation Procedure ................... ....... .....188
Wiring Diagram .....................................................189
Diagnostic Procedure ...........................................193
.162
.173
.180
.188
Component Inspection ..........................................194
Removal and Installation .......................................194
DTC P0101 MAF SENSOR .....................................195
Component Description ........................................195
CONSULT-II Reference Value in Data Monitor Mode
.195
On Board Diagnosis Logic ....................................195
DTC Confirmation Procedure ................................196
Overall Function Check .........................................197
Wiring Diagram ................................................... ..198
Diagnostic Procedure ............................................199
Component Inspection ..........................................201
Removal and Installation .......................................203
DTC P0102, P0103 MAF SENSOR .........................204
Component Description ........................................204
CONSULT-II Reference Value in Data Monitor Mode
.204
On Board Diagnosis Logic ....................................204
DTC Confirmation Procedure ................................205
Wiring Diagram ................................................... ..206
Diagnostic Procedure ............................................207
Component Inspection ..........................................209
Removal and Installation .......................................210
DTC P0112, P0113 IAT SENSOR ............................211
Component Description ........................................211
On Board Diagnosis Logic ....................................211
DTC Confirmation Procedure ................................211
Wiring Diagram ................................................... ..212
Diagnostic Procedure ............................................213
Component Inspection ..........................................214
Removal and Installation .......................................214
DTC P0117, P0118 ECT SENSOR ..........................215
Component Description ........................................215
On Board Diagnosis Logic ....................................215
DTC Confirmation Procedure ................................216
Wiring Diagram ................................................... ..217
Diagnostic Procedure ............................................218
Component Inspection ..........................................219
Removal and Installation .......................................220
DTC P0122, P0123 TP SENSOR ............................221
Component Description ........................................221
CONSULT-II Reference Value in Data Monitor Mode
.221
On Board Diagnosis Logic ....................................221
DTC Confirmation Procedure ................................222
Wiring Diagram ................................................... ..223
Diagnostic Procedure ............................................224
Component Inspection ..........................................227
Removal and Installation .......................................227
DTC P0125 ECT SENSOR ......................................228
Component Description ........................................228
On Board Diagnosis Logic ....................................228
DTC Confirmation Procedure ................................229
Diagnostic Procedure ............................................229
Component Inspection ..........................................230
Removal and Installation .......................................230
DTC P0127 IAT SENSOR ........................................231
Component Description ........................................231
On Board Diagnosis Logic ....................................231
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DTC Confirmation Procedure ............................... 231
Diagnostic Procedure ........................................... 232
Component Inspection ......................................... 233
Removal and Installation ...................................... 233
DTC P0128 THERMOSTAT FUNCTION ................ 234
On Board Diagnosis Logic ................................... 234
DTC Confirmation Procedure ............................... 234
Diagnostic Procedure ........................................... 234
Component Inspection ......................................... 235
Removal and Installation ...................................... 235
DTC P0130, P0150 A/F SENSOR 1 ....................... 236
Component Description ........................................ 236
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 236
DTC Confirmation Procedure ............................... 236
Overall Function Check ........................................ 237
Wiring Diagram .................................................... 239
Diagnostic Procedure ........................................... 242
Removal and Installation ...................................... 245
DTC P0131, P0151 A/F SENSOR 1 ....................... 246
Component Description ........................................ 246
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 246
DTC Confirmation Procedure ............................... 246
Wiring Diagram .................................................... 248
Diagnostic Procedure ........................................... 251
Removal and Installation ...................................... 254
DTC P0132, P0152 A/F SENSOR 1 ....................... 255
Component Description ........................................ 255
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 255
DTC Confirmation Procedure ............................... 255
Wiring Diagram .................................................... 257
Diagnostic Procedure ........................................... 260
Removal and Installation ...................................... 263
DTC P0133, P0153 A/F SENSOR 1 ....................... 264
Component Description ........................................ 264
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 264
DTC Confirmation Procedure ............................... 265
Wiring Diagram .................................................... 267
Diagnostic Procedure ........................................... 270
Removal and Installation ...................................... 275
DTC P0137, P0157 HO2S2 .................................... 276
Component Description ........................................ 276
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 276
DTC Confirmation Procedure ............................... 277
Overall Function Check ........................................ 277
Wiring Diagram .................................................... 279
Diagnostic Procedure ........................................... 282
Component Inspection ......................................... 286
Removal and Installation ...................................... 287
DTC P0138, P0158 HO2S2 .................................... 288
. 236
. 246
. 255
. 264
. 276
Component Description ........................................288
CONSULT-II Reference Value in Data Monitor Mode
.288
On Board Diagnosis Logic ....................................288
DTC Confirmation Procedure ...............................289
Overall Function Check ........................................290
Wiring Diagram .....................................................292
Diagnostic Procedure ...........................................295
Component Inspection ..........................................302
Removal and Installation ......................................303
DTC P0139, P0159 HO2S2 ......... ............................304
Component Description ........................................304
CONSULT-II Reference Value in Data Monitor Mode
.304
On Board Diagnosis Logic ....................................304
DTC Confirmation Procedure ...............................305
Overall Function Check ........................................305
Wiring Diagram .....................................................307
Diagnostic Procedure ...........................................310
Component Inspection ..........................................314
Removal and Installation ......................................315
DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION ..................... .........................................316
On Board Diagnosis Logic ....................................316
DTC Confirmation Procedure ...............................316
Wiring Diagram .....................................................318
Diagnostic Procedure ...........................................322
DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION ..................... .........................................328
On Board Diagnosis Logic ....................................328
DTC Confirmation Procedure ...............................328
Wiring Diagram .....................................................330
Diagnostic Procedure ...........................................334
DTC P0181 FTT SENSOR .................................... ..339
Component Description ........................................339
On Board Diagnosis Logic ....................................339
DTC Confirmation Procedure ...............................339
Wiring Diagram .....................................................341
Diagnostic Procedure ...........................................342
Component Inspection ..........................................343
Removal and Installation ......................................343
DTC P0182, P0183 FTT SENSOR ........... ...... ....... ..344
Component Description ........................................344
On Board Diagnosis Logic ....................................344
DTC Confirmation Procedure ...............................344
Wiring Diagram .....................................................345
Diagnostic Procedure ...........................................346
Component Inspection ..........................................347
Removal and Installation ......................................347
DTC P0222, P0223 TP SENSOR ...... ....... ...... ....... ..348
Component Description ........................................348
CONSULT-II Reference Value in Data Monitor Mode
.348
On Board Diagnosis Logic ....................................348
DTC Confirmation Procedure ...............................349
Wiring Diagram .....................................................350
Diagnostic Procedure ...........................................351
Component Inspection ..........................................354
Removal and Installation ......................................354
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DTC P0300 - P0308 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 8 CYLINDER MISFIRE .....................355
On Board Diagnosis Logic ....................................355
DTC Confirmation Procedure ................... ....... .....356
Diagnostic Procedure ...........................................357
DTC P0327, P0328, P0332, P0333 KS ...................365
Component Description ........................................365
On Board Diagnosis Logic ....................................365
DTC Confirmation Procedure ................... ....... .....365
Wiring Diagram .....................................................366
Diagnostic Procedure ...........................................367
Component Inspection ..........................................368
Removal and Installation ......................................369
DTC P0335 CKP SENSOR (POS) ..........................370
Component Description ........................................370
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................370
DTC Confirmation Procedure ................... ....... .....371
Wiring Diagram .....................................................372
Diagnostic Procedure ...........................................375
Component Inspection ..........................................378
Removal and Installation ......................................378
DTC P0340 CMP SENSOR (PHASE) .....................379
Component Description ........................................379
On Board Diagnosis Logic ....................................379
DTC Confirmation Procedure ................... ....... .....380
Wiring Diagram .....................................................381
Diagnostic Procedure ...........................................382
Component Inspection ..........................................385
Removal and Installation ......................................385
DTC P0420, P0430 THREE WA Y CATALYST FUNC-
TION ........................................................................386
On Board Diagnosis Logic ....................................386
DTC Confirmation Procedure ................... ....... .....386
Overall Function Check ........................................387
Diagnostic Procedure ...........................................388
DTC P0441 EVAP CONTROL SYSTEM .................391
System Description ...............................................391
On Board Diagnosis Logic ....................................391
DTC Confirmation Procedure ................... ....... .....391
Overall Function Check ........................................392
Diagnostic Procedure ...........................................393
DTC P0442 EVAP CONTROL SYSTEM .................396
On Board Diagnosis Logic ....................................396
DTC Confirmation Procedure ................... ....... .....397
Diagnostic Procedure ...........................................398
Component Inspection ..........................................403
DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ...............................404
Description ................ .......................... ..................404
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................405
DTC Confirmation Procedure ................... ....... .....405
Wiring Diagram .....................................................406
Diagnostic Procedure ...........................................408
Component Inspection ..........................................411
Removal and Installation ......................................411
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DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ......................412
Description ............................................................412
CONSULT-II Reference Value in Data Monitor Mode
.412
On Board Diagnosis Logic ....................................413
DTC Confirmation Procedure ................................413
Wiring Diagram ................................................... ..414
Diagnostic Procedure ............................................416
Component Inspection ..........................................417
Removal and Installation .......................................418
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE ............................. ............. ............. ............. ..419
Component Description ........................................419
CONSULT-II Reference Value in Data Monitor Mode
.419
On Board Diagnosis Logic ....................................419
DTC Confirmation Procedure ................................420
Overall Function Check .........................................421
Wiring Diagram ................................................... ..423
Diagnostic Procedure ............................................424
Component Inspection ..........................................428
DTC P0448 EVAP CANISTER VENT CONTROL
VALVE ............................. ............. ............. ............. ..430
Component Description ........................................430
CONSULT-II Reference Value in Data Monitor Mode
.430
On Board Diagnosis Logic ....................................430
DTC Confirmation Procedure ................................431
Wiring Diagram ................................................... ..432
Diagnostic Procedure ............................................433
Component Inspection ..........................................435
DTC P0452 EVAP CONTROL SYSTEM PRESSURE
SENSOR ............................... ...................................436
Component Description ........................................436
CONSULT-II Reference Value in Data Monitor Mode
.436
On Board Diagnosis Logic ....................................436
DTC Confirmation Procedure ................................437
Wiring Diagram ................................................... ..438
Diagnostic Procedure ............................................439
Component Inspection ..........................................442
DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR ............................... ...................................443
Component Description ........................................443
CONSULT-II Reference Value in Data Monitor Mode
.443
On Board Diagnosis Logic ....................................443
DTC Confirmation Procedure ................................444
Wiring Diagram ................................................... ..445
Diagnostic Procedure ............................................446
Component Inspection ..........................................450
DTC P0455 EVAP CONTROL SYSTEM .................451
On Board Diagnosis Logic ....................................451
DTC Confirmation Procedure ................................452
Diagnostic Procedure ............................................453
DTC P0456 EVAP CONTROL SYSTEM .................459
On Board Diagnosis Logic ....................................459
DTC Confirmation Procedure ................................460
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Overall Function Check ........................................ 461
Diagnostic Procedure ........................................... 462
Component Inspection ......................................... 467
DTC P0460 FUEL LEVEL SENSOR ...................... 468
Component Description ........................................ 468
On Board Diagnosis Logic ................................... 468
DTC Confirmation Procedure ............................... 468
Diagnostic Procedure ........................................... 469
Removal and Installation ...................................... 469
DTC P0461 FUEL LEVEL SENSOR ...................... 470
Component Description ........................................ 470
On Board Diagnosis Logic ................................... 470
Overall Function Check ........................................ 470
Diagnostic Procedure ........................................... 471
Removal and Installation ...................................... 471
DTC P0462, P0463 FUEL LEVEL SENSOR .......... 472
Component Description ........................................ 472
On Board Diagnosis Logic ................................... 472
DTC Confirmation Procedure ............................... 472
Diagnostic Procedure ........................................... 473
Removal and Installation ...................................... 473
DTC P0500 VSS ..................................................... 474
Description ........................................................... 474
On Board Diagnosis Logic ................................... 474
DTC Confirmation Procedure ............................... 474
Overall Function Check ........................................ 475
Diagnostic Procedure ........................................... 475
DTC P0506 ISC SYSTEM ....................................... 476
Description ........................................................... 476
On Board Diagnosis Logic ................................... 476
DTC Confirmation Procedure ............................... 476
Diagnostic Procedure ........................................... 477
DTC P0507 ISC SYSTEM ....................................... 478
Description ........................................................... 478
On Board Diagnosis Logic ................................... 478
DTC Confirmation Procedure ............................... 478
Diagnostic Procedure ........................................... 479
DTC P0550 PSP SENSOR ..................................... 480
Component Description ........................................ 480
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 480
DTC Confirmation Procedure ............................... 480
Wiring Diagram .................................................... 481
Diagnostic Procedure ........................................... 482
Component Inspection ......................................... 484
Removal and Installation ...................................... 484
DTC P0603 ECM POWER SUPPLY ....................... 485
Component Description ........................................ 485
On Board Diagnosis Logic ................................... 485
DTC Confirmation Procedure ............................... 485
Wiring Diagram .................................................... 486
Diagnostic Procedure ........................................... 487
DTC P0605 ECM .................................................... 489
Component Description ........................................ 489
On Board Diagnosis Logic ................................... 489
DTC Confirmation Procedure ............................... 489
Diagnostic Procedure ........................................... 490
DTC P0643 SENSOR POWER SUPPLY ................ 492
. 480
On Board Diagnosis Logic ....................................492
DTC Confirmation Procedure ...............................492
Wiring Diagram .....................................................493
Diagnostic Procedure ...........................................495
DTC P0850 PNP SWITCH .................................... ..497
Component Description ........................................497
CONSULT-II Reference Value in Data Monitor Mode
.497
On Board Diagnosis Logic ....................................497
DTC Confirmation Procedure ...............................497
Overall Function Check ........................................498
Wiring Diagram .....................................................499
Diagnostic Procedure ...........................................500
DTC P1140, P1 145 IVT CONTROL POSITION SEN-
SOR ................................ .........................................502
Component Description ........................................502
CONSULT-II Reference Value in Data Monitor Mode
.502
On Board Diagnosis Logic ....................................502
DTC Confirmation Procedure ...............................502
Wiring Diagram .....................................................504
Diagnostic Procedure ...........................................507
Component Inspection ..........................................510
Removal and Installation ......................................510
DTC P1148, P1168 CLOSED LOOP CONTROL ....511
On Board Diagnosis Logic ....................................511
DTC P1211 TCS CONTROL UNIT ..........................512
Description ................... ...... ....... ...... ......................512
On Board Diagnosis Logic ....................................512
DTC Confirmation Procedure ...............................512
Diagnostic Procedure ...........................................512
DTC P1212 TCS COMMUNICATION LINE ............513
Description ................... ...... ....... ...... ......................513
On Board Diagnosis Logic ....................................513
DTC Confirmation Procedure ...............................513
Diagnostic Procedure ...........................................513
DTC P1217 ENGINE OVER TEMPERATURE ........514
Description ................... ...... ....... ...... ......................514
CONSULT-II Reference Value in Data Monitor Mode
.515
On Board Diagnosis Logic ....................................516
Overall Function Check ........................................516
Wiring Diagram .....................................................519
Diagnostic Procedure ...........................................520
Main 13 Causes of Overheating ...........................532
Component Inspection ..........................................532
DTC P1220 FUEL PUMP CONTROL MODULE
(FPCM) .................... ................................................534
Description ................... ...... ....... ...... ......................534
CONSULT-II Reference Value in Data Monitor Mode
.534
On Board Diagnosis Logic ....................................534
DTC Confirmation Procedure ...............................535
Wiring Diagram .....................................................536
Diagnostic Procedure ...........................................537
Component Inspection ..........................................540
DTC P1225 TP SENSOR ............................... ....... ..542
Component Description ........................................542
On Board Diagnosis Logic ....................................542
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DTC Confirmation Procedure ................... ....... .....542
Diagnostic Procedure ...........................................543
Removal and Installation ......................................543
DTC P1226 TP SENSOR ........................................544
Component Description ........................................544
On Board Diagnosis Logic ....................................544
DTC Confirmation Procedure ................... ....... .....544
Diagnostic Procedure ...........................................545
Removal and Installation ......................................545
DTC P1442 EVAP CONTROL SYSTEM .................546
On Board Diagnosis Logic ....................................546
DTC Confirmation Procedure ................... ....... .....547
Diagnostic Procedure ...........................................548
Component Inspection ..........................................553
DTC P1456 EVAP CONTROL SYSTEM .................554
On Board Diagnosis Logic ....................................554
DTC Confirmation Procedure ................... ....... .....555
Overall Function Check ........................................556
Diagnostic Procedure ...........................................557
Component Inspection ..........................................562
DTC P1490 VACUUM CUT V ALVE BYPASS V ALVE .563
Description ................ .......................... ..................563
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................563
DTC Confirmation Procedure ................... ....... .....564
Wiring Diagram .....................................................565
Diagnostic Procedure ...........................................566
Component Inspection ..........................................568
DTC P1491 VACUUM CUT V ALVE BYPASS V ALVE .570
Description ................ .......................... ..................570
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................571
DTC Confirmation Procedure ................... ....... .....571
Overall Function Check ........................................572
Wiring Diagram .....................................................573
Diagnostic Procedure ...........................................574
Component Inspection ..........................................577
DTC P1564 ICC STEERING SWITCH ....................579
Component Description ........................................579
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................579
DTC Confirmation Procedure ................... ....... .....580
Wiring Diagram .....................................................581
Diagnostic Procedure ...........................................582
Component Inspection ..........................................585
DTC P1564 ASCD STEERING SWITCH ................586
Component Description ........................................586
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ....................................586
DTC Confirmation Procedure ................... ....... .....587
Wiring Diagram .....................................................588
Diagnostic Procedure ...........................................589
Component Inspection ..........................................592
DTC P1568 ICC FUNCTION ...................................593
On Board Diagnosis Logic ....................................593
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DTC Confirmation Procedure ................................593
Diagnostic Procedure ............................................593
DTC P1572 ICC BRAKE SWITCH ..........................594
Component Description ........................................594
CONSULT-II Reference Value in Data Monitor Mode
.594
On Board Diagnosis Logic ....................................594
DTC Confirmation Procedure ................................595
Wiring Diagram ................................................... ..596
Diagnostic Procedure ............................................597
Component Inspection ..........................................602
DTC P1572 ASCD BRAKE SWITCH ......................604
Component Description ........................................604
CONSULT-II Reference Value in Data Monitor Mode
.604
On Board Diagnosis Logic ....................................604
DTC Confirmation Procedure ................................605
Wiring Diagram ................................................... ..606
Diagnostic Procedure ............................................607
Component Inspection ..........................................611
DTC P1574 ICC VEHICLE SPEED SENSOR .........612
Component Description ........................................612
On Board Diagnosis Logic ....................................612
DTC Confirmation Procedure ................................612
Diagnostic Procedure ............................................613
DTC P1574 ASCD VEHICLE SPEED SENSOR .....614
Component Description ........................................614
On Board Diagnosis Logic ....................................614
DTC Confirmation Procedure ................................614
Diagnostic Procedure ............................................615
DTC P1715 INPUT SPEED SENSOR (TURBINE
REVOLUTION SENSOR) ........................................616
Description ............................................................616
CONSULT-II Reference Value in Data Monitor Mode
.616
On Board Diagnosis Logic ....................................616
Diagnostic Procedure ............................................616
DTC P1800 VIAS CONTROL SOLENOID VALVE ..617
Component Description ........................................617
CONSULT-II Reference Value in Data Monitor Mode
.617
On Board Diagnosis Logic ....................................617
DTC Confirmation Procedure ................................617
Wiring Diagram ................................................... ..618
Diagnostic Procedure ............................................619
Component Inspection ..........................................620
Removal and Installation .......................................621
DTC P1805 BRAKE SWITCH .................................622
Description ............................................................622
CONSULT-II Reference Value in Data Monitor Mode
.622
On Board Diagnosis Logic ....................................622
DTC Confirmation Procedure ................................622
Wiring Diagram ................................................... ..623
Diagnostic Procedure ............................................624
Component Inspection ..........................................626
DTC P2100, P2103 THROTTLE CONTROL MOTOR
RELAY .....................................................................627
Component Description ........................................627
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CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 627
DTC Confirmation Procedure ............................... 627
Wiring Diagram .................................................... 629
Diagnostic Procedure ........................................... 630
Component Inspection ......................................... 632
DTC P2101 ELECTRIC THROTTLE CONTROL
FUNCTION ........................ .......................... ............ 633
Description ........................................................... 633
On Board Diagnosis Logic ................................... 633
DTC Confirmation Procedure ............................... 633
Wiring Diagram .................................................... 634
Diagnostic Procedure ........................................... 635
Component Inspection ......................................... 639
Removal and Installation ...................................... 639
DTC P2118 THROTTLE CONTROL MOTOR ........ 640
Component Description ........................................ 640
On Board Diagnosis Logic ................................... 640
DTC Confirmation Procedure ............................... 640
Wiring Diagram .................................................... 641
Diagnostic Procedure ........................................... 642
Component Inspection ......................................... 643
Removal and Installation ...................................... 644
DTC P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................ 645
Component Description ........................................ 645
On Board Diagnosis Logic ................................... 645
DTC Confirmation Procedure ............................... 645
Diagnostic Procedure ........................................... 646
DTC P2122, P2123 APP SENSOR ........................ 647
Component Description ........................................ 647
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 647
DTC Confirmation Procedure ............................... 648
Wiring Diagram .................................................... 649
Diagnostic Procedure ........................................... 650
Component Inspection ......................................... 652
Removal and Installation ...................................... 653
DTC P2127, P2128 APP SENSOR ........................ 654
Component Description ........................................ 654
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 654
DTC Confirmation Procedure ............................... 655
Wiring Diagram .................................................... 656
Diagnostic Procedure ........................................... 657
Component Inspection ......................................... 660
Removal and Installation ...................................... 660
DTC P2135 TP SENSOR ........................................ 661
Component Description ........................................ 661
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 661
DTC Confirmation Procedure ............................... 662
Wiring Diagram .................................................... 663
Diagnostic Procedure ........................................... 664
. 627
. 647
. 654
. 661
Component Inspection ..........................................667
Removal and Installation ......................................667
DTC P2138 APP SENSOR .....................................668
Component Description ........................................668
CONSULT-II Reference Value in Data Monitor Mode
.668
On Board Diagnosis Logic ....................................668
DTC Confirmation Procedure ...............................669
Wiring Diagram .....................................................670
Diagnostic Procedure ...........................................671
Component Inspection ..........................................675
Removal and Installation ......................................675
DTC P2A00, P2A03 A/F SENSOR 1 ......................676
Component Description ........................................676
CONSULT-II Reference Value in Data Monitor Mode
.676
On Board Diagnosis Logic ....................................676
DTC Confirmation Procedure ...............................676
Wiring Diagram .....................................................678
Diagnostic Procedure ...........................................681
Removal and Installation ......................................686
ASCD BRAKE SWITCH .........................................687
Component Description ........................................687
CONSULT-II Reference Value in Data Monitor Mode
.687
Wiring Diagram .....................................................688
Diagnostic Procedure ...........................................689
Component Inspection ..........................................693
ASCD INDICATOR ..................................................695
Component Description ........................................695
CONSULT-II Reference Value in Data Monitor Mode
.695
Wiring Diagram .....................................................696
Diagnostic Procedure ...........................................697
ELECTRICAL LOAD SIGNAL ................................698
CONSULT-II Reference Value in Data Monitor Mode
.698
Wiring Diagram .....................................................699
Diagnostic Procedure ...........................................701
FUEL INJECTOR ....................................................706
Component Description ........................................706
CONSULT-II Reference Value in Data Monitor Mode
.706
Wiring Diagram .....................................................707
Diagnostic Procedure ...........................................710
Component Inspection ..........................................714
Removal and Installation ......................................714
FUEL PUMP ............................................................715
Description ................... ...... ....... ...... ......................715
CONSULT-II Reference Value in Data Monitor Mode
.715
Wiring Diagram .....................................................716
Diagnostic Procedure ...........................................717
Component Inspection ..........................................721
Removal and Installation ......................................721
ICC BRAKE SWITCH .............................................722
Component Description ........................................722
CONSULT-II Reference Value in Data Monitor Mode
.722
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Revision: 2005 November 2006 Q45
EC-7
Wiring Diagram .....................................................723
Diagnostic Procedure ...........................................724
Component Inspection ..........................................730
IGNITION SIGNAL ..................................................731
Component Description ........................................731
Wiring Diagram .....................................................732
Diagnostic Procedure ...........................................737
Component Inspection ..........................................742
Removal and Installation ......................................743
REFRIGERANT PRESSURE SENSOR ..................744
Component Description ........................................744
Wiring Diagram .....................................................745
Diagnostic Procedure ...........................................746
Removal and Installation ......................................748
VARIABLE INDUCTION AIR CONTROL SYSTEM
(VIAS) ....................................... ...............................749
Description ................ .......................... ..................749
CONSULT-II Reference Value in Data Monitor Mode
.750
Wiring Diagram .....................................................751
Diagnostic Procedure ............................................753
Component Inspection ..........................................756
Removal and Installation .......................................756
MIL AND DATA LINK CONNECTOR ......................757
Wiring Diagram ................................................... ..757
SERVICE DATA AND SPECIFICATIONS (SDS) ....759
Fuel Pressure ............... ...... ....... ...... ....... ...... ....... ..759
Idle Speed and Ignition Timing ..............................759
Calculated Load Value ..........................................759
Mass Air Flow Sensor .................................. ....... ..759
Intake Air Temperature Sensor .............................759
Engine Coolant Temperature Sensor ....................759
Fuel Tempe rature Sens or ......... ...... ....... ...... .........759
Crankshaft Position Sensor (POS) .......................759
Camshaft Position Sensor (PHASE) .....................759
A/F Sensor 1 Heater .............................................759
Heated Oxygen sensor 2 Heater ..........................760
Throttle Control Motor ...........................................760
Fuel Injector .... ...... ....... ...... ....... ...... ....... ...... ....... ..760
Fuel Pump .................... ...... ....... ...... ....... ...... ....... ..760
Revision: 2005 November 2006 Q45
EC-8
INDEX FOR DTC
INDEX FOR DTC PFP:00024
DTC No. Index NBS001PW
NOTE:
● If DTC U1000 or U1001 is display ed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-156, "
● If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to EC-159, "
CONSULT-II
GST*
U1000
U1001
U1010 1010 CONTROL UNIT(CAN) EC-159
P0000 0000
P0011 0011 INT/V TIM CONT-B1 EC-161
P0021 0021 INT/V TIM CONT-B2 EC-161
P0031 0031 A/F SEN1 H TR (B1) EC-173
P0032 0032 A/F SEN1 H TR (B1) EC-173
P0037 0037 HO2S2 HTR (B1) EC-180
P0038 0038 HO2S2 HTR (B1) EC-180
P0051 0051 A/F SEN1 H TR (B2) EC-173
P0052 0052 A/F SEN1 H TR (B2) EC-173
P0057 0057 HO2S2 HTR (B2) EC-180
P0058 0058 HO2S2 HTR (B2) EC-180
P0075 0075 INT/V TIM V/CIR-B1 EC-188
P0081 0081 INT/V TIM V/CIR-B2 EC-188
P0101 0101 MAF SEN/CIRCUIT EC-195
P0102 0102 MAF SEN/CIRCUIT EC-204
P0103 0103 MAF SEN/CIRCUIT EC-204
P0112 0112 IAT SEN/CIRCUIT EC-211
P0113 0113 IAT SEN/CIRCUIT EC-211
P0 117 0117 ECT SEN/CIRC EC-215
P0 118 0118 ECT SEN/CIRC EC-215
P0122 0122 TP SEN2/CIRC EC-221
P0123 0123 TP SEN2/CIRC EC-221
P0125 0125 ECT SENSOR EC-228
P0127 0127 IAT SENSOR EC-231
P0128 0128 THERMSTAT FNCTN EC-234
P0130 0130 A/F SENSOR1 (B1) EC-236
P0131 0131 A/F SENSOR1 (B1) EC-246
P0132 0132 A/F SENSOR1 (B1) EC-255
P0133 0133 A/F SENSOR1 (B1) EC-264
P0137 0137 HO2S2 (B1) EC-276
P0138 0138 HO2S2 (B1) EC-288
DTC U1010 CAN COMMUNICATION" .
1
DTC*
2
ECM*
1000*
1001*
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
3
4
4
CAN COMM CIRCUIT EC-156
CAN COMM CIRCUIT EC-156
NO DTC IS DETECTED.
FURTHER TESTING
MA Y BE REQUIRED.
(CONSULT-II screen terms)
Reference page
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Revision: 2005 November 2006 Q45
EC-9
1
DTC*
CONSULT-II
2
GST*
P0139 0139 HO 2S2 (B 1) EC-304
P0150 0150 A/F SENSOR1 (B2) EC-236
P0151 0151 A/F SENSOR1 (B2) EC-246
P0152 0152 A/F SENSOR1 (B2) EC-255
P0153 0153 A/F SENSOR1 (B2) EC-264
P0157 0157 HO 2S2 (B 2) EC-276
P0158 0158 HO 2S2 (B 2) EC-288
P0159 0159 HO 2S2 (B 2) EC-304
P0171 0171 FUEL SYS-LEAN-B 1 EC-316
P0172 0172 FUEL SYS-RICH-B1 EC-328
P0174 0174 FUEL SYS-LEAN-B 2 EC-316
P0175 0175 FUEL SYS-RICH-B2 EC-328
P0181 0181 FTT SENSOR EC-339
P0182 0182 FTT SEN/CIRCUIT EC-344
P0183 0183 FTT SEN/CIRCUIT EC-344
P0222 0222 TP SEN 1/CIRC EC-348
P0223 0223 TP SEN 1/CIRC EC-348
P0300 0300 MU LTI CYL MISFIRE EC-355
P0301 0301 CYL 1 MISFIR E EC-355
P0302 0302 CYL 2 MISFIR E EC-355
P0303 0303 CYL 3 MISFIR E EC-355
P0304 0304 CYL 4 MISFIR E EC-355
P0305 0305 CYL 5 MISFIR E EC-355
P0306 0306 CYL 6 MISFIR E EC-355
P0307 0307 CYL 7 MISFIR E EC-355
P0308 0308 CYL 8 MISFIR E EC-355
P0327 0327 KNOCK SEN/CIRC-B1 EC-365
P0328 0328 KNOCK SEN/CIRC-B1 EC-365
P0332 0332 KNOCK SEN/CIRC-B2 EC-365
P0333 0333 KNOCK SEN/CIRC-B2 EC-365
P0335 0335 CKP SEN/CIRCUIT EC-370
P0340 0340 CMP SEN/CIRC-B1 EC-379
P0420 0420 TW CATALYST SYS-B1 EC-386
P0430 0430 TW CATALYST SYS-B2 EC-386
P0441 0441 EVAP PURG FLOW/MON EC-391
P0442 0442 EVAP SMALL LEAK EC-396
P0443 0443 PURG VOLUME CONT/V EC-404
P0444 0444 PURG VOLUME CONT/V EC-412
P0445 0445 PURG VOLUME CONT/V EC-412
P0447 0447 VENT CO NT RO L VALVE EC-419
P0448 0448 VENT CO NT RO L VALVE EC-430
P0452 0452 EVAP SYS PRES SEN EC-436
ECM*
INDEX FOR DTC
Items
3
(CONSULT-II screen terms)
Reference page
Revision: 2005 November 2006 Q45
EC-10
1
DTC*
CONSULT-II
2
GST*
P0453 0453 EVAP SYS PRES SEN EC-4 43
P0455 0455 EVAP GROSS LEAK EC-451
P0456 0456 EVAP VERY SML LEAK EC-459
P0460 0460 FUEL LEV SEN SLOSH EC-468
P0461 0461 FUEL LEVEL SENSOR EC-470
P0462 0462 FUEL LEVL SEN/CIRC EC-472
P0463 0463 FUEL LEVL SEN/CIRC EC-472
P0500 0500
P0506 0506 ISC SYSTEM EC-476
P0507 0507 ISC SYSTEM EC-478
P0550 0550 PW ST P SEN/CIRC EC-480
P0603 0603 ECM BACK UP/CIRCUIT EC-485
P0605 0605 ECM EC-489
P0643 0643 SENSOR POWER/CIRC EC-492
P0700 0700 TCM AT-106
P0705 0705 PNP SW/CIR C AT-107
P0710 0710 ATF TEMP SEN/CIRC AT-129
P0717 0717 TURBINE SENSOR AT-111
P0720 0720
P0740 0740 TCC SOLENO I D/CIR C AT-120
P0744 0744 A/T TCC S/V FNCTN AT-122
P0745 0745 L/PRESS SOL/CIRC AT-124
P0850 0850 P-N POS SW/CIRCUIT EC-497
P1140 1140 INTK TIM S/CIRC-B1 EC-502
P1145 1145 INTK TIM S/CIRC-B2 EC-502
P1148 1148 CLOSED LOOP- B1 EC-511
P1168 1168 CLOSED LOOP- B2 EC-511
P1211 1211 TCS C/U FUNCTN EC-512
P1212 1212 TCS/CIRC EC-513
P1217 1217 ENG OVER TEMP EC-514
P1220 1220 FPCM/CIRCUIT EC-534
P1225 1225 CTP LEARNING EC-542
P1226 1226 CTP LEARNING EC-544
P1442 1442 EVAP SMALL LEAK EC-546
P1456 1456 EVAP VERY SML LEAK EC-554
P1490 1490 VC/V BYPASS/V EC-563
P1491 1491 VC CUT/V BYPASS/V EC-570
P1564 1564 ASCD SW
P1568 1568
P1572 1572 ASCD BRAKE SW
ECM*
INDEX FOR DTC
Items
3
VEH SPEED SEN/CIRC*
VEH SPD SEN/CIR AT*
ACC COMMAND VALUE*
(CONSULT-II screen terms)
5
5
6
Reference page
EC-474
AT-113
EC-579
(Models with ICC)
EC-586
(Models with ASCD)
EC-593
EC-594
(Models with ICC)
EC-604
(Models with ASCD)
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Revision: 2005 November 2006 Q45
EC-11
INDEX FOR DTC
1
DTC*
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 at the same time, the MIL illumina te s.
*6: Models with ICC.
2
GST*
P1574 1574 ASCD VHL SPD SEN
P1715 1715 IN PULY SPEED EC-616
P1730 1730 A/T INTERLOCK AT-136
P1752 1752 I/C SOLEN OID/C I RC AT-141
P1754 1754 I/C SOLENO ID FNC TN AT-143
P1757 1757 FR/B SOLENOID/CIRC AT-145
P1759 1759 FR/B SOLENOID FNCT AT-147
P1762 1762 D/C SOLENO I D/CI RC AT-149
P1764 1764 D/C SOLENO I D F NCT N AT-151
P1767 1767 HLR/C SOL/CIRC AT-153
P1769 1769 HLR/C SOL FNCTN AT-155
P1772 1772 LC/B SOLENOID/CIRC AT-157
P1774 1774 LC/B SOLENOID FNCT AT-159
P1800 1800 VIAS S/V CIRC EC-617
P1805 1805 BRAKE SW/CIRCUIT EC-622
P2100 2100 ETC MOT PW R EC-627
P2101 2101 ETC FUNCTION/CIRC EC-633
P2103 2103 ETC MOT PW R EC-627
P2118 2118 ETC MOT EC-640
P2119 2119 ETC ACTR EC-645
P2122 2122 APP SEN 1/CIRC EC-647
P2123 2123 APP SEN 1/CIRC EC-647
P2127 2127 APP SEN 2/CIRC EC-654
P2128 2128 APP SEN 2/CIRC EC-654
P2135 2135 TP SENSOR EC-661
P2138 2138 APP SENSOR EC-668
P2A00 2A00 A/F SENSOR1 (B1) EC-676
P2A03 2A03 A/F SENSOR1 (B2) EC-676
ECM*
3
(CONSULT-II screen terms)
Items
Reference page
EC-612 (Models with ICC)
EC-614
(Models with ASCD)
Revision: 2005 November 2006 Q45
EC-12
INDEX FOR DTC
Alphabetical Index NBS001PX
NOTE:
● If DTC U1000 or U1001 is display ed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-156, "
● If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to EC-159, "
(CONSULT-II screen terms)
A/F SEN1 HTR (B1) P0031 0031 EC-173
A/F SEN1 HTR (B1) P0032 0032 EC-173
A/F SEN1 HTR (B2) P0051 0051 EC-173
A/F SEN1 HTR (B2) P0052 0052 EC-173
A/F SENSOR1 (B1) P0130 0130 EC-236
A/F SENSOR1 (B1) P0131 0131 EC-246
A/F SENSOR1 (B1) P0132 0132 EC-255
A/F SENSOR1 (B1) P0133 0133 EC-264
A/F SENSOR1 (B1) P2A00 2 A00 EC-676
A/F SENSOR1 (B2) P0150 0150 EC-236
A/F SENSOR1 (B2) P0151 0151 EC-246
A/F SENSOR1 (B2) P0152 0152 EC-255
A/F SENSOR1 (B2) P0153 0153 EC-264
A/F SENSOR1 (B2) P2A03 2 A03 EC-676
A/T INTERLOCK P1730 1730 AT-136
A/T TCC S/V FNCTN P0744 0744 AT-122
ACC COMMAND VALUE*
APP SEN 1/CIRC P2122 2122 EC-647
APP SEN 1/CIRC P2123 2123 EC-647
APP SEN 2/CIRC P2127 2127 EC-654
APP SEN 2/CIRC P2128 2128 EC-654
APP SENSOR P2138 2138 EC-668
ASCD BRAKE SW P1572 1572
ASCD SW P1564 1564
ASCD VHL SPD SEN P1574 1574
ATF TEMP SEN/CIRC P0710 0710 AT-129
BRAKE SW/CIRCUIT P1805 1805 EC-622
CAN COMM CIRCUIT U100 0
CAN COMM CIRCUIT U100 1
CKP SEN/CIRCUIT P0335 0335 EC-370
CLOSED LOOP-B1 P1148 1148 EC-511
CLOSED LOOP-B2 P1168 1168 EC-511
CMP SEN/CIRC-B1 P0340 0340 EC-379
CONTROL UNIT(CAN) U1010 1010 EC-159
DTC U1010 CAN COMMUNICATION" .
Items
6
DTC U1000, U1001 CAN COMMUNICATION LINE" .
1
DTC*
CONSULT-II
2
GST*
P1568 1568 EC-593
ECM*
1000*
1001*
3
4
4
Reference page
EC-594
(Models with ASCD)
EC-604
EC-579
EC-586
(Models with ASCD)
EC-612
(Models with ASCD)
EC-614
(Models with ICC)
(Models with ICC)
(Models with ICC)
EC-156
EC-156
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Revision: 2005 November 2006 Q45
EC-13
INDEX FOR DTC
1
Items
(CONSULT-II screen terms)
CTP LEARNING P1225 1225 EC-542
CTP LEARNING P1226 1226 EC-544
CYL 1 MISFIRE P0301 0301 EC-355
CYL 2 MISFIRE P0302 0302 EC-355
CYL 3 MISFIRE P0303 0303 EC-355
CYL 4 MISFIRE P0304 0304 EC-355
CYL 5 MISFIRE P0305 0305 EC-355
CYL 6 MISFIRE P0306 0306 EC-355
CYL 7 MISFIRE P0307 0307 EC-355
CYL 8 MISFIRE P0308 0308 EC-355
D/C SOLENOID FNCTN P1764 1764 AT-151
D/C SOLENOID/CIRC P1762 1762 AT-149
ECM P0605 0605 EC-489
ECM BACK UP/CIRCUIT P0603 0603 EC-485
ECT SEN/CIRC P01 17 0117 EC-215
ECT SEN/CIRC P01 18 0118 EC-215
ECT SENSOR P0125 0125 EC-228
ENG OVER TEMP P1217 1217 EC-514
ETC ACTR P2119 21 1 9 EC-645
ETC FUNCTION/CIRC P2101 2101 EC-633
ETC MOT P2118 2118 EC-640
ETC MOT PWR P2100 2100 EC-627
ETC MOT PWR P2103 2103 EC-627
EVAP GROSS LEAK P0455 0455 EC-451
EVAP PURG FLOW/MON P0441 0441 EC-391
EVAP SMALL LEAK P0442 0442 EC-396
EVAP SMALL LEAK P1442 1442 EC-546
EVAP SYS PRES SEN P0452 0452 EC-436
EVAP SYS PRES SEN P0453 0453 EC-443
EVAP VERY SML LEAK P0456 0456 EC-459
EVAP VERY SML LEAK P1456 1456 EC-554
FPCM/CIRCUIT P1220 1220 EC-534
FR/B SOLENOID FNCT P1759 1759 AT-147
FR/B SOLENOID/CIRC P1757 1757 AT-145
FTT SEN/CIRCUIT P0182 0182 EC-344
FTT SEN/CIRCUIT P0183 0183 EC-344
FTT SENSOR P0181 0181 EC-339
FUEL LEV SEN SLOSH P0460 0460 EC-468
FUEL LEVEL SENSOR P0461 0461 EC -470
FUEL LEVL SEN/CIRC P0462 0462 EC-472
FUEL LEVL SEN/CIRC P0463 0463 EC-472
FUEL SYS-LEAN-B1 P0171 0171 EC-316
CONSULT-II
GST*
DTC*
3
2
ECM*
Reference page
Revision: 2005 November 2006 Q45
EC-14
INDEX FOR DTC
1
Items
(CONSULT-II screen terms)
FUEL SYS-LEAN-B2 P0 174 0174 EC-316
FUEL SYS-RICH-B1 P0172 0172 EC-328
FUEL SYS-RICH-B2 P0175 0175 EC-328
HLR/C SOL/CIRC P1767 1767 AT-153
HLR/C SOL FNCTN P1769 1769 AT-155
HO2S2 (B1) P0137 0137 EC-276
HO2S2 (B1) P0138 0138 EC-288
HO2S2 (B1) P0139 0139 EC-304
HO2S2 (B2) P0157 0157 EC-276
HO2S2 (B2) P0158 0158 EC-288
HO2S2 (B2) P0159 0159 EC-304
HO2S2 HTR (B1) P0037 0037 EC-180
HO2S2 HTR (B1) P0038 0038 EC-180
HO2S2 HTR (B2) P0057 0057 EC-180
HO2S2 HTR (B2) P0058 0058 EC-180
I/C SOLENOID/CIRC P1752 1752 AT-141
I/C SOLENOID FNCTN P1754 1754 AT-143
IAT SEN/CIRCUIT P0112 0112 EC-211
IAT SEN/CIRCUIT P0113 0113 EC-211
IAT SENSOR P0127 0127 EC-231
IN PULY SPEED P1 715 1715 EC-616
INT/V TIM CONT-B1 P0011 0011 EC-161
INT/V TIM CONT-B2 P0021 0021 EC-161
INT/V TIM V/CIR-B1 P0075 0075 EC-188
INT/V TIM V/CIR-B2 P0081 0081 EC-188
INTK TIM S/CIRC-B1 P1140 1140 EC-502
INTK TIM S/CIRC-B2 P1145 1145 EC-502
ISC SYSTEM P0506 0506 EC-476
ISC SYSTEM P0507 0507 EC-478
KNOCK SEN/CIRC-B1 P0327 0327 EC-365
KNOCK SEN/CIRC-B1 P0328 0328 EC-365
KNOCK SEN/CIRC-B2 P0332 0332 EC-365
KNOCK SEN/CIRC-B2 P0333 0333 EC-365
L/PRESS SOL/CIRC P0745 0745 AT-124
LC/B SOLENOID FNCT P1774 1774 AT-159
LC/B SOLENOID/CIRC P1772 1772 AT-157
MAF SEN/CIRCUIT P0101 0101 EC-195
MAF SEN/CIRCUIT P0102 0102 EC-204
MAF SEN/CIRCUIT P0103 0103 EC-204
MULTI CYL MISFIRE P0300 0300 EC-355
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EC-46
CONSULT-II
GST*
DTC*
3
2
ECM*
Reference page
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Revision: 2005 November 2006 Q45
EC-15
INDEX FOR DTC
1
Items
(CONSULT-II screen terms)
NO DTC IS DETECTED.
FURTHER TESTING
MA Y BE REQUIR ED.
P-N POS SW/CIRCUIT P0850 0 850 EC-497
PNP SW/CIRC P0705 0705 AT-107
PURG VOLUME CONT/V P0443 0443 EC-404
PURG VOLUME CONT/V P0444 0444 EC-412
PURG VOLUME CONT/V P0445 0445 EC-412
PW ST P SEN/CIRC P0550 0550 EC-480
SENSOR POWER/CIRC P0643 0643 EC-492
TCC SOLENOID/CIRC P0740 0740 AT-120
TCM P0700 0700 AT-106
TCS C/U FUNCTN P1211 1211 EC-512
TCS/CIRC P1212 1212 EC-513
THERMSTAT FNCTN P01 28 0128 EC-234
TP SEN 1/CIRC P0222 0222 EC-348
TP SEN 1/CIRC P0223 0223 EC-348
TP SEN 2/CIRC P0122 0122 EC-221
TP SEN 2/CIRC P0123 0123 EC-221
TP SENSOR P2135 2135 EC-661
TURBINE SENSOR P0717 0717 AT-111
TW CATALYST SYS-B1 P0420 0420 EC-386
TW CATALYST SYS-B2 P0430 0430 EC-386
VC CUT/V BYPASS/V P1491 1491 EC-570
VC/V BYPASS/V P1490 1490 EC-563
VEH SPD SEN/CIR AT*
VEH SPEED SEN/CIRC*
VENT CONTROL VALVE P0447 0447 EC-419
VENT CONTROL VALVE P0448 0448 EC-430
VIAS S/V CIRC P1800 1800 EC-617
*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 at the same time, the MIL illumina te s.
*6: Models with ICC.
5
5
CONSULT-II
GST*
P0000 0000 —
P0720 0720 AT-113
P0500 0500 EC-474
DTC*
3
2
ECM*
Reference page
Revision: 2005 November 2006 Q45
EC-16
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
The Supplemental Rest raint System such as “AIR BAG” and “SEAT BELT P RE-TENSIONER”, used along
with a front seat belt, helps to redu ce th e risk or se verit y of i njury to the driv er and front passenge r for ce rtain
types of collision. This system includes seat belt switch inputs and dual st age front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Manual.
WARNING:
● To avoid rendering the SRS inopera tive, whi ch could incr ease the risk of pe rsonal 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, inc luding incorrect removal and installation of the SRS, can lead to per-
sonal injury ca use d by unintentional ac tiv atio n o f the s ys tem . F or re moval of Spiral C ab le and Air
Bag Module, see the SRS sec tion.
● Do not use electrical test equ ipment o n any circu it related to the SRS unless in structed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/ or orange harnesses or
harness connectors.
NBS001PY
On Board Diagnostic (OBD) System of Engine and A/T NBS001PZ
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The ECM has an on boa rd diagnos tic system. It wil l light up the m alfunction indicator la mp (MIL) to warn th e
driver of a malfunction causing emission deterioration.
CAUTION:
● Be sure to turn the ignitio n switch OFF and disconne ct the negative battery term inal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid 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 components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-60, "
NESS CONNECTOR" .
● Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.
● Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to ligh t up due to the m al func tion of the EVAP system or fuel injection system ,
etc.
● Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
Precaution NBS001Q0
● Always use a 12 volt battery as power source.
● Do not attempt to disconne ct b attery c abl es w hile engine is
running.
● Before connecting or d isconnecting th e ECM harnes s con-
nector, turn ignition switch OFF and disconnect battery
ground cable. Failure to do so may damage the ECM
because battery voltage is applie d to ECM even if ignition
switch is turned OFF.
● Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
HAR-
SEF289H
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EC-17
PRECAUTIONS
● Do not disassemble ECM.
● If a battery terminal is disconnected, the memory will return
to the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary sl ightl y w he n the te rmin al i s di sconnected. However, this is not an in dication of a malfunction. Do not replace parts because of a slight 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 trip freeze frame data
– System readiness test (SRT) codes
– Test values
● When connecting ECM harness connector, fasten it
securely with a leve r as far as it will go a s sho wn in the f igure.
PBIB1164E
● When connecting or discon necting pin connectors 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 coil and condenser, thus resulting in
damage to ICs.
● Keep engine control system harness at least 10 cm (4 in)
away from adjacent ha r ne ss , to p rev ent engine control sy stem 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-105, "
ECM Terminals and Reference Value"
.
● Handle mass air flow sensor carefully to avoid damage.
● Do not disassemble mass air flow sensor.
● Do not clean mass air flow senso r 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-
ous incidents.
● Do not shock or jar the camshaft position sensor (PHASE), crankshaft position sensor (POS).
SEC406D
PBIB0090E
MEF040D
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EC-18
PRECAUTIONS
● After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The O verall Function
Check should be a good result if the repair is completed.
● 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 EC M power tran sistor.
● Do not use ECM ground terminals when measuring input/
output volt ag e. Doi ng so ma y resul t in dam age t o the ECM' s
transistor. Use a ground other than ECM terminals, such as
the ground.
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● B1 indicates the bank 1 and B2 indicates the bank 2 as
shown in the figure.
SEF348N
PBIB1144E
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EC-19
PRECAUTIONS
● Do not operate fuel pump when there is no fuel in lines.
● Tighten fuel hose clamps to the specified torque.
● 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.
PBIB2462E
● When installing C.B. ham radio or a mobile phone, be 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 feeder 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.
SEF709Y
SEF708Y
Revision: 2005 November 2006 Q45
EC-20
PREPARATION
PREPARATION PFP:00002
Special Service Tools NBS001Q2
The actual shapes of Kent-Moore tools may differ from those of spec ial ser vi ce tool s illust rat ed here.
Tool number
(Kent-Moore No.)
Tool name
Description
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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
S-NT564
S-NT379
S-NT636
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)
Loosening or tightening heated oxygen sensor 2
with 22 mm (0.87 in) hexagon nut
Loosening or tightening air fuel ratio sensor 1
a: 22 mm (0.87 in)
Checking fuel pressure
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KV109E0010
(J-46209)
Break-out box
KV109E0080
(J-45819)
Y-cable adapter
LEC642
S-NT825
S-NT826
Measuring the ECM signals with a circuit tester
Measuring the ECM signals with a circuit tester
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EC-21
PREPARATION
Commercial Service Tools NBS001Q3
Tool name
(Kent-Moore No.)
Leak detector
i.e.: (J-41416)
S-NT703
EVAP service port
adapter
i.e.: (J-41413-OBD)
S-NT704
Fuel filler cap adapter
i.e.: (MLR-8382)
S-NT815
Socket wrench Removing and installing engine coolant
Description
Locating the EVAP leak
Applying positive pressure through EVAP service
port
Checking fuel tank vacuum relief valve opening
pressure
temperature sensor
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
S-NT705
Reconditioning the exhaust syst em threads
before installing a new oxygen sensor. Use with
anti-seize lubricant shown below.
a: J-43897-18 18 mm diameter with pitch 1.5
mm for Zirconia Oxygen Sensor
b: J-43897-12 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
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EC-22
ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM PFP:23710
System Diagram NBS001Q4
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PBIB3135E
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EC-23
ENGINE CONTROL SYSTEM
Multiport Fuel Injection (MFI) System NBS001Q5
INPUT/OUTPUT SIGNAL CHART
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Battery
Knock sensor Engine knocking condition
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
VDC/TCS/ABS control unit
Air conditioner switch Air conditioner operation
Wheel sensor
*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 signals of engine speed and battery voltage.
1
Engine speed*
Piston position
Battery voltage*
Density of oxygen in exhaust gas
VDC/TCS operation command*
Vehicle speed*
3
Fuel injection
3
2
2
& mixture rat io
control
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 signals (for engine speed and intake air) from the crankshaft position sensor (POS), camshaft position
sensor (PHASE) and the mass 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 operatio n
● When selector lever is chan ged from N to D
● High-load, high-speed operation
<Fuel decrease>
● During deceleration
● During high engine speed operation
Revision: 2005 November 2006 Q45
EC-24
ENGINE CONTROL SYSTEM
MIXTURE RATIO FEEDBACK CONTRO L (CLOSED LOOP CONTROL)
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PBIB3020E
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 A/F
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 A/F sensor 1, refer to
EC-236
. This maintains the mixture ratio with in the rang e of sto ichi om et r ic (ideal 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 A/F sensor 1 shi ft, the air-fue l ratio is contro lled to stoic hiometric by the signal f rom 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 operation
● Malfunction of A/F sens or 1 or its circuit
● Insufficient activation of A/F sensor 1 at low engine coolant temperature
● High engine coolant temperatu re
● During warm-up
● After shifting from N to D
● When starting the engine
MIXTURE RATIO SELF-LEARNING CONT ROL
The mixture ratio feedback control system monitors the mixture ratio signal transmitted from A/F sensor 1.
This feedback signal is then sent to the ECM. The ECM controls the basic 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 change s during operation (i.e., fue l inj ect o r clog gi ng ) direc tly affect mixture ratio.
Accordingly, the dif fer e nc e b etw een th e ba si c a nd t he or eti ca l mi xtur e ra ti os i s m on ito re d in thi s sys te m. Thi s is
then computed in terms of “injection pu lse duration” to autom atically compens ate for the difference betw een
the two ratios.
“Fuel trim” refers to the feedback compensation valu e compared against the basic injection duration. Fuel trim
includes short term fuel trim and long term fuel trim.
“Short term fuel trim” is the sh ort-term fuel c ompensatio n used to ma intain the mixture ratio at its th eoretical
value. The signal from A/F sensor 1 indicates whether the mixture ratio is RICH or LEAN compared to the theoretical value. The signal then triggers a reduction in fuel volume if the mixture ratio is rich, and an 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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EC-25
ENGINE CONTROL SYSTEM
FUEL INJECTION TIMING
PBIB0122E
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 inject ed simul taneously into all eight cyli nd er s tw ic e e ach en gi ne cyc le . In o th er w ord s, pu ls e sign al s o f
the same width are simultaneously transmitted from the ECM.
The eight 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 cylin der is cu t of f du ring de cele rati on, op erat ion of the engi ne at ex cessi vel y high spee ds or operation of the vehicle at excessiv ely high speeds.
Electronic Ignition (EI) System NBS001Q6
INPUT/OUTPUT SIGNAL CHART
Sensor Input Signal to ECM ECM function Actuator
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
Battery
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Wheel sen sor
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
Engine speed*
Piston position
Battery voltage*
Vehicle speed*
SYSTEM DESCRIPTION
Firing order: 1 - 8 - 7 - 3 - 6 - 5 - 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 or e ve r y run ni ng co nd iti on 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
2
Ignition timing
control
2
1
Power transistor
Revision: 2005 November 2006 Q45
EC-26
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) NBS001Q7
INPUT/OUTPUT SIGNAL CHART
Sensor Input Signal to ECM ECM function Actuator
Park/neutral position (PNP) switch Neutral position
Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant te mp era ture
Crankshaft position sensor (POS)
Camshaft position sensor (PHAS E)
Wheel sensor Vehicle speed*
*: This signal is sent to the ECM through CAN communi cat ion line.
Engine speed
SYSTEM DESCRIPTION
If the engine speed is above 1,400 rpm under no load (for example, the selector lever position is neutral and
engine speed is o ver 1,40 0 rp m) fu el wi ll b e c ut o f f a fte r so me ti me . Th e ex act ti me w hen th e fu el i s c ut o ff varies based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,000 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-24
Fuel cut control
Fuel injector
.
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EC-27
AIR CONDITIONING CUT CONTROL
AIR CONDITIONING CUT CONTROL PFP:23710 Input/Outp ut Signal Chart NBS001Q8
Sensor I nput Signal to ECM ECM function Actuator
Air conditioner switch Air conditioner ON signal
Accelerator pedal position sensor Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine coolant temperature sensor Engine coolant temperature
Battery
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensor
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
Engine speed*
Battery voltage*
Vehicle speed*
2
Air conditioner
2
1
cut control
Air conditioner relay
System Description NBS001Q9
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.
Revision: 2005 November 2006 Q45
EC-28
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) PFP:18930
System Description NBS001QA
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 steering switch ASCD steering switch operation
Park/Neutral position (PNP)
switch
Wheel sensor Vehicle speed*
TCM Powertrain revolut io n*
*: This signal is sent to the ECM through CAN communi cat ion line
Gear position
ASCD vehicle speed control
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. D riv er ca n set vehicle speed in advance between app rox im ately 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 lamp and SET lamp in combination meter. If any malfunction occurs in ASCD s ystem, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
Electric throttle control
actuator
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SET OPERATION
Press MAIN switch. (The CRUISE lamp 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 lamp in combination meter illuminates.)
ACCELERATE OPERATION
If the RESUME /AC CE L ERATE switch is pres se d du r i ng cr ui se con tr ol dri vi ng , inc r ea se the ve hi c le spe ed un til
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 pressed
● More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
● Brake pedal is depressed
● Selector lev er is changed to N, P, R position
● Ve hicle speed decreased to 13 km/h ( 8 MPH) lower than the set speed
● TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indica tor lamp.
● Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE 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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EC-29
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, de crease vehicle set s peed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
When the RESUME/ACCE LERATE switch is pressed af ter cance l opera tion other tha n pres sing MAIN switch
is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must
meet following conditions.
● Brake ped al is released
● A/T selector lever is in other than P and N positions
● Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)
Component Description NBS001QB
ASCD STEERING SWITCH
Refer to EC-586 .
ASCD BRAKE SWITCH
Refer to EC-604 and EC-687 .
STOP LAMP SWITCH
Refer to EC-622 .
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EC-627 , EC-633 , EC-640 and EC-645 .
ASCD INDICATOR
Refer to EC-695 .
Revision: 2005 November 2006 Q45
EC-30
CAN COMMUNICATION
CAN COMMUNICATION PFP:23710
System Description NBS001QC
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-35, "
CAN COMMUNICATION" , about CAN communication for detail.
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EC-31
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION SYSTEM PFP:14950 Description NBS001QD
SYSTEM DESCRIPTION
SEF569XB
The evaporativ e emission sy stem is used to reduce hydr ocarbons emi tted into the at mosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportional ly regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.
Revision: 2005 November 2006 Q45
EC-32
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION LINE DRAWING
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: Vehicle front : From next page
1. Intake manifold collector 2. EVAP canis te r purge vol um e control
solenoid valve
NOTE:
Do not use soapy water or any type of solvent while installing vacuum hose or purge hoses.
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PBIB3136E
3. EVAP service port
Revision: 2005 November 2006 Q45
EC-33
EVAPORATIVE EMISSION SYSTEM
PBIB3137E
Revision: 2005 November 2006 Q45
EC-34
EVAPORATIVE EMISSION SYSTEM
Component Inspection NBS001QE
EVAP CANISTER
Check EVAP canister as follows:
1. Pinch the fresh air hose.
2. Blow air into port A and check that it flows freely out of port B .
SEF396T
A
EC
C
D
Tightening Torque
Tight en EVAP canister as shown in the figure.
Make sure new O-ring is installed properly be tween EVAP canister and EVAP canister vent control valve.
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)
1. Wipe clean valve housing.
SEF397T
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2. Check valve opening pressure and vacuum.
Pressure:
15.3 - 20.0 kPa (0.156 - 0.204 kg/cm
2
, 2.22 -
2.90 psi)
Vacuum:
−6.0 to −3.3 kPa (−0.061 to −0.034 kg/cm
2
, −
0.87 to −0.48 psi)
3. If out of specification, replace fuel filler cap as an assembly.
CAUTION:
Use only a genu ine fuel fill er cap as a replac ement. If a n incorrect fuel filler cap is used, the MIL may come on.
SEF943S
VACUUM CUT VALVE AND VACUUM CUT VALVE BYPASS VALVE
Refer to EC-568 .
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-411 .
FUEL TANK TEMPERATURE SENSOR
Refer to EC-343 .
Revision: 2005 November 2006 Q45
EC-35
M
EVAPORATIVE EMISSION SYSTEM
EVAP SERVICE PORT
Positive pre ss ur e is de livered to the EVAP system thro ug h th e E VAP
service port. If fuel vapor leakage in the EVAP system occurs, use a
leak detector to locate the leak.
SEF462UA
How to Detect Fuel Vapor Leakage NBS001QF
CAUTION:
● Never use compressed air or a high pressure pump.
● Do not exceed 4.12 kPa (0.042 kg/cm
NOTE:
● Do not start engine.
● Improper installation of EVAP service port adapter to the EVAP service port may cause a leak.
2
, 0.6 psi) of pressure in EVAP system.
WITH CONSULT-II
1. Attach the EVAP service port adapter securely to the EVAP service port.
2. Also attach the pressure pump and hose to the EVAP service port adapter.
3. Turn ignition switch ON.
4. Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT
MODE” with CONSULT-II.
5. Touch “START”. A bar graph (Pressure indicating display) will
appear on the screen.
6. Apply positive pressure to the EVAP system until the pressure
indicator reaches the middle of the bar graph.
7. Remove EVAP service port adapter and hose with pressure
pump.
PEF838U
PEF917U
Revision: 2005 November 2006 Q45
EC-36
EVAPORATIVE EMISSION SYSTEM
8. Locate the leak using a leak detector. Refer to EC-33, "EVAPO-
RATIVE EMISSION LINE DRAWING" .
WITHOUT CONSULT-II
1. Attach the EVAP service port adapter securely to the EVAP service port.
2. Also attach the pressure pump with pressure gauge to the EVAP
service port adapter.
A
EC
C
SEF200U
D
E
F
G
3. Apply battery voltage to between the termin als of both EVAP canister vent control valv e and vacuum c ut
valve bypass valve to make a closed EVAP system.
PBIB0026E
4. To locate the leak, deliver positive pr essure to th e EVAP system until press ure gauge points reach 1.38 to
2.76 kPa (0.014 to 0.028 kg/cm
5. Remove EVAP service port adapter and hose with pressure pump.
6. Locate the leak using a leak detector. Refer to EC-33, "
2
, 0.2 to 0.4 psi).
EVAPORATIVE EMISSION LINE DRAWING" .
SEF462UA
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Revision: 2005 November 2006 Q45
EC-37
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VAPOR RECOVERY (ORVR) PFP:00032 System Description NBS001QG
From the beginning of refueling, the fuel tank pressure goes up. When the pressure reaches the setting value
of the refueling control valve (RCV) opening pressure, the RCV is opened. After RCV opens, the air and vapor
inside the fuel tank go through refueling EVAP vapor cut valve, RCV and refueling vapor line to the EV AP canister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere.
When the refuel in g h as reac he d t he full le ve l of the fu el ta nk , th e ref u elin g E VAP vapor cut valve is clo se d an d
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.
The RCV is always closed during driving and the evaporative emission control system is operated the same
as conventional system.
WARNING:
When conducting inspections below, be sure to observe the following:
● Put a “CAUTION: INFLAMMABLE” sign in workshop.
● Do not smok e while servicin g fuel system. Keep open flames a nd sparks away from work area.
● Be sure to furnish the workshop with a CO2 fire extinguisher.
CAUTION:
● Before removing fuel line parts, carry out the following procedures:
– Put drained fuel in an explosion-proof container and put lid on securely.
– Release fuel pressure fro m fuel line. Refer to EC-80, "FUEL PRESSURE RELEASE" .
– Disconnect battery ground cable.
● Always replace O-ring when the fuel gauge retainer is removed.
● Do not kink or twist hose and tube when they are installed.
● Do not tighten hose and clamps excessively to avoid damaging hoses.
● After installation, run engine and check for fuel leaks at connection.
● Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.
SEF206VA
Revision: 2005 November 2006 Q45
EC-38
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Diagnostic Procedure NBS001QH
SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.
1. CHECK EVAP CANISTER
A
1. Remove EVAP canister with EVAP canister vent control valve attached.
2. Weigh the EVAP canister with EVAP canister vent control valve attached.
The weight should be less than 1.8 kg (4.0 lb).
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
Yes or No
Yes >> G O T O 3.
No >> GO TO 6.
3. REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
SEF596U
EC
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>> GO TO 4.
4. CHECK WATER SEPARATOR
Refer to EC-41, "
OK or NG
OK >> GO TO 5.
NG >> Replace water separator.
Component Inspection" .
5. DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and water separator for clogging or poor connection.
>> Repair or replace EVAP hose.
6. CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-41, "
OK or NG
OK >> GO TO 7.
NG >> Replace refueling EVAP vapor cut valve with fuel tank.
Component Inspection" .
7. CHECK REFUELING CONTROL VALVE
Refer to EC-41, "
OK or NG
OK >> INSPECTION END
NG >> Replace refueling control valve with fuel tank.
Component Inspection" .
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Revision: 2005 November 2006 Q45
EC-39
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG WHILE REFUELING.
1. CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent control valve attached.
2. Weigh the EVAP canister with EVAP canister vent contr ol valve atta ched.
The weight should be less than 1.8 kg (4.0 lb).
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
Yes or No
Yes >> GO TO 3.
No >> GO TO 6.
3. REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4.
4. CHECK WATER SEPARATOR
Refer to EC-41, "
OK or NG
OK >> GO TO 5.
NG >> Replace water separator.
Component Inspection" .
5. DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and water separator for clogging or poor connection.
>> Repair or replace EVAP hose.
6. CHECK VENT HOSES AND VENT TUBES
Check hoses and tube s betw een EVAP canister and ref ueling c ontrol v alve for cl oggi ng, kink , loosene ss and
improper connection.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace hoses and tubes.
SEF596U
7. CHECK FILLER NECK TUBE
Check signal line and recirculation line for clogging, dents and cracks.
OK or NG
OK >> GO TO 8.
NG >> Replace filler neck tube.
Revision: 2005 November 2006 Q45
EC-40
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
8. CHECK REFUELING CONTROL VALVE
Refer to EC-41, "
OK or NG
OK >> GO TO 9.
NG >> Replace refueling control valve with fuel tank.
Component Inspection" .
9. CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-41, "
OK or NG
OK >> GO TO 10.
NG >> Replace refueling EVAP vapor cut valve with fuel tank.
Component Inspection" .
10. CHECK FUEL FILLER TUBE
Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.
OK or NG
OK >> GO TO 11 .
NG >> Replace fuel filler tube.
11. CHECK ONE-WAY FUEL VAL VE-I
Check one-way valve for clogging.
OK or NG
OK >> GO TO 12.
NG >> Repair or replace one-way fuel valve with fuel tank.
12. CHECK ONE-WAY FUEL VALVE-II
A
EC
C
D
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1. Make sure that fuel is drained from the tank.
2. Remove fuel filler tube and hose.
3. Check one-way fuel va lv e for op era tio n as follo w s.
When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.
OK or NG
OK >> INSPECTION END
NG >> Replace fuel filler tube or replace one-way fuel valve
with fuel tank.
Component Inspection NBS001QI
WATER SEPARATOR
1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or fl aws in the appearance.
3. Check visually for cracks or fl aws in the hose.
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SEF665U
Revision: 2005 November 2006 Q45
EC-41
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
4. Check that A and C are not clogged by blowing air into B with
A , and then C plugge d.
5. In case of NG in items 2 - 4, replace the parts.
NOTE:
● Do not disassemble water separator.
PBIB1032E
REFUELING EVAP VAPOR CUT VALVE
With CONSULT-II
1. Remo ve fuel tank. Refer to FL- 8 , "FUEL TANK" .
2. Drain fuel from the tank as follows:
a. Remove fuel feed hose located on the fuel gauge retainer.
b. Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other
side to a fuel container.
c. Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II.
3. Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from hose end B), and check that the air flows freely into
the tank.
4. Check EVAP vapor cut val v e for being stuck to open as follows.
a. Connect vacuum pump to hose ends A and B us ing a suitable 3-way connecto r.
b. Remove fuel gauge retainer with fu el gauge unit.
Always replace O-ring with new one.
c. Put fuel tank upside down.
d. Apply vacuum pressure to both hose ends A and B [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel gauge
retainer remaining open and check that the pressure is appl ic ab le.
Without CONSULT-II
1. Remo ve fuel tank. Refer to FL- 8 , "FUEL TANK" .
2. Drain fuel from the tank as follows:
a. Remove fuel gauge retainer.
b. Drain fuel from the tank using a handy pump into a fuel container.
3. Check refueling EVAP vapor cut valve for being stuck to close as follows.
PBIB1135E
Revision: 2005 November 2006 Q45
EC-42
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Blow air into th e ref u el in g EVAP vapor cut valv e ( fro m ho se end B), and che ck tha t th e ai r fl ow s fr ee ly into
the tank.
4. Check EVAP vapor cut valve for being stuck to open as follows.
a. Connect v acuum pump to hos e ends A and B using a suitable 3- way connector.
b. Remove fuel gauge retainer with fuel ga uge unit.
Always replace O-ring with new one.
c. Put fuel tank upside down.
d. Apply vacu um pre ssu r e to bot h hose end s A an d B [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel gauge
retainer remaining open and check that the pressure is applicable.
A
EC
C
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REFUELING CONTROL VALVE
1. Remove fuel filler cap.
2. Check air co ntinuity between hose ends A and B.
Blow air into the hose end B. Air should flow freely into the fuel tank.
3. Blow air into hose end A and check there is no l eakage.
4. Apply pressure to both hose ends A and B [20 kPa (150 mmHg, 5.91 inHg)] using a pressure pump and a
suitable 3-w ay connector. Check that there is no leakage.
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PBIB1135E
Revision: 2005 November 2006 Q45
EC-43
POSITIVE CRANKCASE VENTILATION
POSITIVE CRANKCASE VENTILATION PFP:11810 Description NBS001QJ
SYSTEM DESCRIPTION
This system returns blow-by gas to the intake manifold.
The positive cra nkcase ventilation (PCV) valve is provided to conduct crankcase bl ow-by gas to the intake
manifold.
During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV
valve.
Normally, the capacity of the valve is sufficient to handle an y blo w -by and a sma ll am ou nt of ve nt ilating air.
The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes
through the hose connecting air inlet tubes to rocker cover.
Under full-throt tle condition, the manifold vacu um is insufficient to draw the blow-by flo w through the valve.
The flow goes through the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all conditions.
Component Inspection NBS001QK
PCV (POSITIVE CRANKCASE VENTILATION) VALVE
With engine running at idle, remove PCV valve ventilation hose from
rocker cover. A properly working valve makes a hissing noise as air
passes through it. A strong vacuum should be fe lt immediately whe n
a finger is placed over valve inlet.
PBIB0062E
PBIB1588E
PBIB1589E
Revision: 2005 November 2006 Q45
EC-44
POSITIVE CRANKCASE VENTILATION
PCV VALVE VENTILATION HOSE
1. Check hoses and hose connections for leaks.
2. Disconnect all hoses and clean with compressed air. If any hose
cannot be freed of obstructions, replace.
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EC-45
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) PFP:28591 Description NBS001QL
● If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to BL-200, "
SYSTEM-NATS)" .
● Confirm no self-diagnostic results of IVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESUL TS”
mode with CONSULT-II.
● When replacing ECM, initialization of IVIS (NATS) system
and registration of all IVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of IVIS (NATS)
initialization and all IVIS (NATS) ignition key ID registration, refer to CONSULT -II operation manual,
IVIS/NVIS.
IVIS (INFINITI VEHICLE IMMOBILIZER
SEF543X
Revision: 2005 November 2006 Q45
EC-46
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM PFP:00028
Introduction NBS002WA
The ECM has an o n bo ard diagnostic s ys te m, which detec ts ma lf unctions related to engine senso r s or ac tu ators. The ECM also records various emission-related diagnostic information including:
Emission-related diagnostic info rmat io n Diagnostic service
Diagnostic Trouble Code (DTC) Service $03 of SAE J1979
Freeze Frame data Service $02 of SAE J1979
System Readiness Test (SRT) code Service $01 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC) Serv ice $07 of SAE J1979
1st Trip Freeze Frame data
Test val ues and Test limits Service $06 of SAE J1979
Calibration ID Service $09 of SAE J1979
The above information can be checked using procedures listed in the table below.
×: Applicable —: Not applicable
DTC 1st trip DTC
CONSULT-II ××× × ××—
GST ××× — ×××
ECM ××*— — —× —
*: When DTC and 1st trip DTC simultaneously appear on the disp la y, they cannot be clearly distinguished from each ot her.
Freeze
Frame data
1st trip Freeze
Frame data
SRT code SRT status Test value
EC
A
C
D
E
F
G
H
The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consec utive trips (Two trip detection l ogic), or when the ECM enters fa il-safe mode. (Refer to EC-90,
"Fail-Safe Chart" .)
Two Trip Detection Logic NBS002WB
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL lig hts up. The MIL lig hts up at the same time when th e DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” means a driv ing mode in wh ich self-diagnos is is performe d
during vehicl e operation. Spe cific on board d iagnostic item s will cause the ECM to light u p or blink the MI L,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
×: Applicable —: Not applicable
MIL DTC 1st trip DTC
Items
Misfire (Possible three way catalyst damage) — DTC: P0300 P0308 is being detected
Misfire (Possible three way catalyst damage) — DTC: P0300 P0308 is being detected
One trip detection diagnoses
(Refer to EC-48, "
RELATED DIAGNOSTIC INFORMATION ITEMS" .)
Except above — — — × — ××—
EMISSION-
1st trip 2nd trip
Blinking
× ————— × —
—— × —— × ——
— × —— × ———
Lighting
up
Blinking
Lighting
up
1st trip
displaying
2nd trip
displaying
1st trip
displaying
2nd trip
display-
ing
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When there is an op en c irc ui t o n M IL c irc ui t, t he EC M c an no t warn the driver by lighting up MIL w h en th ere is
malfunction on engine control system.
Revision: 2005 November 2006 Q45
EC-47
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trip s, ECM w arns t he dri ver that e ngin e cont rol sy stem malfun cti ons an d MIL ci rcu it is op en by m eans
of operating fail-safe fun ction.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunctio n.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
Emission-related Diagnostic Information NBS002WC
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
×:Applicable —: Not applicable
1
2
DTC*
ECM*
1000*
1001*
3
4
4
SRT code
—— 1 × EC-156
—— 2 —EC-156
Items
(CONSULT-II screen terms)
CAN COMM CIRCUIT U1000
CAN COMM CIRCUIT U1001
CONTROL UNIT(CAN) U1010 1010 — — 1 × EC-159
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
INT/V TIM CONT-B1 P0011 0011 — — 2 × EC-161
INT/V TIM CONT-B2 P0021 0021 — — 2 × EC-161
A/F SEN1 HTR (B1) P0031 0031 — × 2 × EC-173
A/F SEN1 HTR (B1) P0032 0032 — × 2 × EC-173
HO2S2 HTR (B1) P0037 0037 — × 2 × EC-180
HO2S2 HTR (B1) P0038 0038 — × 2 × EC-180
A/F SEN1 HTR (B2) P0051 0051 — × 2 × EC-173
A/F SEN1 HTR (B2) P0052 0052 — × 2 × EC-173
HO2S2 HTR (B2) P0057 0057 — × 2 × EC-180
HO2S2 HTR (B2) P0058 0058 — × 2 × EC-180
INT/V TIM V/CIR-B1 P00 75 0075 — — 2 × EC-188
INT/V TIM V/CIR-B2 P00 81 0081 — — 2 × EC-188
MAF SEN/CIRCUIT P0101 0101 — — 2 × EC-195
MAF SEN/CIRCUIT P0102 0102 — — 1 × EC-204
MAF SEN/CIRCUIT P0103 0103 — — 1 × EC-204
IAT SEN/CIRCUIT P01 1 2 0112 — — 2 × EC-211
IAT SEN/CIRCUIT P01 1 3 0113 — — 2 × EC-211
ECT SEN/CIRC P0117 0117 — — 1 × EC-215
ECT SEN/CIRC P0118 0118 — — 1 × EC-215
TP SEN 2/CIRC P0122 0122 — — 1 × EC-221
TP SEN 2/CIRC P0123 0123 — — 1 × EC-221
ECT SENSOR P0125 0125 — — 2 × EC-228
IAT SENSOR P0127 0127 — — 2 × EC-231
THERMSTAT FNCTN P0128 0128 — — 2 × EC-234
A/F SENSOR1 (B1) P0130 0130 — × 2 × EC-236
A/F SENSOR1 (B1) P0131 0131 — × 2 × EC-246
A/F SENSOR1 (B1) P0132 0132 — × 2 × EC-255
A/F SENSOR1 (B1) P0133 0133 ××2 × EC-264
HO2S2 (B1) P0137 0137 ××2 × EC-276
CONSULT-II
GST*
P0000 0000 ———
T est value/
Test limit
(GST only)
Trip MIL
Flashing*
Reference
8
page
—
Revision: 2005 November 2006 Q45
EC-48
ON BOARD DIAGNOSTIC (OBD) SYSTEM
1
2
DTC*
ECM*
3
SRT code
Items
(CONSULT-II screen terms)
HO2S2 (B1) P0138 0138 ××2 × EC-2 88
HO2S2 (B1) P0139 0139 ××2 × EC-3 04
A/F SENSOR1 (B2) P0150 0150 — × 2 × EC-236
A/F SENSOR1 (B2) P0151 0151 — × 2 × EC-246
A/F SENSOR1 (B2) P0152 0152 — × 2 × EC-255
A/F SENSOR1 (B2) P0153 0153 ××2 × EC-264
HO2S2 (B2) P0157 0157 ××2 × EC-2 76
HO2S2 (B2) P0158 0158 ××2 × EC-2 88
HO2S2 (B2) P0159 0159 ××2 × EC-3 04
FUEL SYS-LEAN-B1 P0171 017 1 — — 2 × EC-316
FUEL SYS-RICH-B1 P0172 0172 — — 2 × EC-328
FUEL SYS-LEAN-B2 P0174 017 4 — — 2 × EC-316
FUEL SYS-RICH-B2 P0175 0175 — — 2 × EC-328
FTT SENSOR P0181 0181 — — 2 × EC-339
FTT SEN/CIRCUIT P0182 0182 — — 2 × EC-344
FTT SEN/CIRCUIT P0183 0183 — — 2 × EC-344
TP SEN 1/CIRC P0222 0222 — — 1 × EC-348
TP SEN 1/CIRC P0223 0223 — — 1 × EC-348
MULTI CYL MISFIRE P0300 0300 — — 2 × EC-355
CYL 1 MISFIRE P0301 0301 — — 2 × EC-355
CYL 2 MISFIRE P0302 0302 — — 2 × EC-355
CYL 3 MISFIRE P0303 0303 — — 2 × EC-355
CYL 4 MISFIRE P0304 0304 — — 2 × EC-355
CYL 5 MISFIRE P0305 0305 — — 2 × EC-355
CYL 6 MISFIRE P0306 0306 — — 2 × EC-355
CYL 7 MISFIRE P0307 0307 — — 2 × EC-355
CYL 8 MISFIRE P0308 0308 — — 2 × EC-355
KNOCK SEN/CIRC-B1 P0327 0327 — — 2 — EC-365
KNOCK SEN/CIRC-B1 P0328 0328 — — 2 — EC-365
KNOCK SEN/CIRC-B2 P0332 0332 — — 2 — EC-365
KNOCK SEN/CIRC-B2 P0333 0333 — — 2 — EC-365
CKP SEN/CIRCUIT P0335 0335 — — 2 × EC-370
CMP SEN/CIRC-B1 P0340 0340 — — 2 × EC-379
TW CATALYST SYS-B1 P0420 0420 ××2 × EC-386
TW CATALYST SYS-B2 P0430 0430 ××2 × EC-386
EVAP PURG FLOW/MON P0441 0441 ××2 × EC-391
EVAP SMALL LEAK P0442 0442 ××2 × EC-396
PURG VOLUME CONT/V P0443 0443 — — 2 × EC-404
PURG VOLUME CONT/V P0444 0444 — — 2 × EC-412
PURG VOLUME CONT/V P0445 0445 — — 2 × EC-412
VENT CONTROL VALVE P0447 0447 — — 2 × EC-419
VENT CONTROL VALVE P0448 0448 — — 2 × EC-430
CONSULT-II
GST*
T est value/
Test limit
(GST only)
Trip MIL
Reference
page
A
EC
C
D
E
F
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Revision: 2005 November 2006 Q45
EC-49
ON BOARD DIAGNOSTIC (OBD) SYSTEM
1
2
DTC*
ECM*
3
SRT code
×*
×*
Items
(CONSULT-II screen terms)
EVAP SYS PRES SEN P0452 0452 — — 2 × EC-436
EVAP SYS PRES SEN P0453 0453 — — 2 × EC-443
EVAP GROSS LEAK P0455 0455 — — 2 × EC-451
EVAP VERY SML LEAK P0456 04 56
FUEL LEV SEN SLOSH P0460 0460 — — 2 × EC-468
FUEL LEVEL SENSOR P0461 0461 — — 2 × EC-470
FUEL LEVL SEN/CIRC P0462 0462 — — 2 × EC-472
FUEL LEVL SEN/CIRC P0463 0463 — — 2 × EC-472
VEH SPEED SEN/CIRC*
ISC SYSTEM P0506 0506 — — 2 × EC-476
ISC SYSTEM P0507 0507 — — 2 × EC-478
PW ST P SEN/CIRC P0550 0550 — — 2 — EC-480
ECM BACK UP/CIRCUIT P0603 0603 — — 2 × EC-485
ECM P0605 0605 — — 1 or 2 × or — EC-489
SENSOR POWER/CIRC P0643 0643 — — 1 × EC-492
TCM P0700 0700 — — 1 × AT-106
PNP SW/CIRC P0705 0705 — — 2 × AT-107
ATF TEMP SEN/CIRC P0710 0710 — — 2 × AT-129
TURBINE SENSOR P0717 0717 — — 2 × AT-111
VEH SPD SEN/CIR AT*
TCC SOLENOID/CIRC P0740 0740 — — 2 × AT-120
A/T TCC S/V FNCTN P0744 0744 — — 2 × AT-122
L/PRESS SOL/CIRC P0745 0745 — — 2 × AT-124
P-N POS SW/CIRCUIT P0850 0850 — — 2 × EC-497
INTK TIM S/CIRC-B1 P1140 1140 — — 2 × EC -502
INTK TIM S/CIRC-B2 P1145 1145 — — 2 × EC -502
CLOSED LOOP-B1 P1148 1148 — — 1 × EC-511
CLOSED LOOP-B2 P1168 1168 — — 1 × EC-511
TCS C/U FUNCTN P1211 1211 — — 2 — EC-512
TCS/CIRC P1212 1212 — — 2 — EC -513
ENG OVER TEMP P1217 1217 — — 1 × EC-514
FPCM/CIRCUIT P1220 1220 — — 2 × EC-534
CTP LEARNING P1225 1225 — — 2 — EC-542
CTP LEARNING P1226 1226 — — 2 — EC-544
EVAP SMALL LEAK P1442 14 42 ××2 × EC-546
EVAP VERY SML LEAK P1456 14 56
VC/V BYPASS/V P1490 1490 — — 2 × EC-563
VC CUT/V BYPASS/V P1491 1491 — — 2 × EC- 570
5
5
CONSULT-II
GST*
P0500 0500 — — 2 × EC-474
P0720 0720 — — 2 × AT-113
7
7
T est value/
Test limit
(GST only)
× 2 × EC-459
× 2 × EC-554
Trip MIL
Reference
page
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EC-50
ON BOARD DIAGNOSTIC (OBD) SYSTEM
1
2
DTC*
ECM*
3
SRT code
Items
(CONSULT-II screen terms)
ASCD SW P1564 1564 — — 1 —
ICC COMMAND VALUE*
ASCD BRAKE SW P1572 1572 — — 1 —
ASCD VHL SPD SEN P1574 1574 — — 1 —
NATS MALFUNCTION P1610 - P1615 1610 - 1615 — — 2 — EC-46
IN PULY SPEED P171 5 1715 — — 2 — EC-616
A/T INTERLOCK P1730 1730 — — 1 × AT-136
I/C SOLENOID/CIRC P1752 1752 — — 1 × AT-141
I/C SOLENOID FNCTN P1754 1754 — — 1 × AT-143
FR/B SOLENOID/CIRC P1757 1757 — — 1 × AT-145
FR/B SOLENOID FNCT P1759 1759 — — 1 × AT-147
D/C SOLENOID/CIRC P1762 1762 — — 1 × AT-149
D/C SOLENOID FNCTN P1764 1764 — — 1 × AT-151
HLR/C SOL/CIRC P1767 1767 — — 1 × AT-153
HLR/C SOL FNCTN P1769 1769 — — 1 × AT-155
LC/B SOLENOID/CIRC P1772 1772 — — 1 × AT-157
LC/B SOLENOID FNCT P1774 1774 — — 1 × AT-159
VIAS S/V CIRC P1800 1800 — — 2 — EC-617
BRAKE SW/CIRCUIT P1805 1805 — — 2 — EC-622
ETC MOT PWR P2100 2100 — — 1 × EC-627
ETC FUNCTION/CIRC P2101 2101 — — 1 × EC-633
ETC MOT PWR P2103 2103 — — 1 × EC-627
ETC MOT P2118 2118 — — 1 × EC-640
ETC ACTR P2119 2119 — — 1 × EC-645
APP SEN 1/CIRC P2122 2122 — — 1 × EC-647
APP SEN 1/CIRC P2123 2123 — — 1 × EC-647
APP SEN 2/CIRC P2127 2127 — — 1 × EC-654
APP SEN 2/CIRC P2128 2128 — — 1 × EC-654
TP SENSOR P2135 2135 — — 1 × EC-661
APP SENSOR P2138 2138 — — 1 × EC-6 68
A/F SENSOR1 (B1) P2A00 2A00 — × 2 × EC-676
A/F SENSOR1 (B2) P2A03 2A03 — × 2 × EC-676
6
CONSULT-II
GST*
P1568 1568 — — 1 — EC-593
T est value/
Test limit
(GST only)
Trip MIL
Reference
page
EC-579
(Models
with ICC)
EC-586
(Models
with ASCD)
EC-594
(Models
with ICC)
EC-604
(Models
with ASCD)
EC-612
(Models
with ICC)
EC-614
(Models
with ASCD)
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EC-51
ON BOARD DIAGNOSTIC (OBD) SYSTEM
*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 at the same time, the MIL illumina te s.
*6: Models with ICC.
*7: SRT code will not be set if the self-diagnostic result is NG.
*8: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-56, "
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory w as cleared pre viously, and the 1st trip DTC did not re occur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detect ion logic ). If the sam e malfun ction is not detected in the 2nd tri p (meetin g the requi red
driving pattern), the 1 st trip DTC i s clear ed from the E CM me mory. If the same malfunction is detec ted in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words,
the DTC is stor e d in t h e ECM m emo ry an d the MI L lig hts up when the same mal fun ct io n occu r s i n t wo co ns ecutive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearin g the DTC and th e 1st t rip DTC f rom the ECM me mory are describe d in EC-61 , "
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
For malfunctions in which 1st trip DTCs are displayed, refer to EC-48, "
INFORMATION ITEMS" . These items are required by legal regulations to continuously monitor the system/
component. In addition, the items monitored non-continuously are also displayed on CONSULT-II.
1st trip DTC is specified in Service $07 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL
and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the
vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedur e Step 2, refer to EC-83, "
mation Proced ure or Overall Function Check to try to duplicate the malfun ction. If the malfunction i s duplicated, the item requires repair.
EMISSION-RELATED DIAGNOSTIC
WORK FLOW" . Then perform DTC Confir-
How to Display SRT Status" .
HOW
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
With CONSULT-II
With GST
CONSULT-II or GST (Generic Scan Tool) Ex amples: P0340, P0850, P1148, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)
No Tools
The number of blinks of the M IL in the Diag nostic Te st Mode II (Self-D iagnostic Res ults) indicates the DTC.
Example: 0340, 0850, 1148, etc.
These DTCs are controlled by NISSAN.
● 1st trip DTC No. is the same as DTC No.
● Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to normal. CONSULT-II can ide ntify malfun ction s tatus as shown be low. Therefore, using CO NSULT-II (if
available) is recommended.
A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunction is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be [0].
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EC-52
ON BOARD DIAGNOSTIC (OBD) SYSTEM
If a 1st trip DTC is stored in the ECM, the time data will be [1t].
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PBIB0911E
FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA
The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant temperature, sho r t ter m f ue l tr im , l ong ter m fu el tri m, eng i ne spe ed , vehi cl e sp ee d, ab sol u te th rot tl e po sit i on , ba se
fuel schedule and intake air temperature at the moment a malfunction is detect ed.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored toge ther with the DTC data, are called freeze fram e data and displaye d on CONSULT-I I or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
details, see EC-118, "
Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze fr ame data and it is update d each time a different 1st trip DTC is det ected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. R eme mber, only one set of free ze fra me da ta can be stored in the ECM . The ECM has th e following pri orities to update the data.
Priority Items
1
2 Except the above items (Includes A/T related items)
3 1st trip freeze frame data
For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd
trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated
Freeze frame data Misfire — DTC: P0300 - P0308
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different malfunction is dete cted. There is no priority fo r 1st trip freeze frame data. However, once freeze frame data is
stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st
trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze
frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the
ECM memory.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM memory is erased. Procedures for clearing the ECM memory are described in EC-61, "
SION-RELATED DIAGNOSTIC INFORMATION" .
Freeze Frame Data and 1st Trip Freeze Frame Data" .
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
HOW TO ERASE EMIS-
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SYSTEM READINESS TEST (SRT) CODE
System Readiness Test (SRT) code is specified in Service $01 of SAE J1979.
As part of an enhanced em iss ions tes t for Ins pect ion & Ma inte nanc e (I/M), certain states req uire th e status of
SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and components. Completion must be verified in or der for the emissions inspection to proceed.
If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use
the information in this Service Manual to set the SRT to “CMPLT”.
In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT
status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains
“CMPLT” until the self-diagnosis memory is erased.
Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's
normal driving pattern; the SRT will indicate “INCMP” for these items.
NOTE:
The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM memory power supply is interrupted for several hours.
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EC-53
ON BOARD DIAGNOSTIC (OBD) SYSTEM
If, during the state e missions insp ection, th e SRT indicates “CMPLT” for all test items, t he inspecto r will continue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the
vehicle is returned to the customer untested.
NOTE:
If MIL is ON during the state emissions inspection, the vehicle is also returned to the customer untested even
though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”) and
DTC (No DTCs) before the inspection.
SRT Item
The table below shows required self-diagnostic items to set the SRT to “CMPLT”.
SRT item
(CONSULT-II indication)
CATALYST 2 Three way catalyst function P0420, P0430
EVAP SYSTEM 2 EVAP control system purge flow monitoring P0441
HO2S 2 Air fuel ratio (A/F) sensor 1 P0133, P0153
*: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), o ne by one based on the priority for
models with CONSULT-II.
Performance
Priority*
1 EVAP control system P0442, P1442
2 EVAP control system P0456, P1456
Required self-diagnostic items to set the SRT to “CMPLT”
Heated oxygen sensor 2 P0137, P0157
Heated oxygen sensor 2 P0138, P0158
Heated oxygen sensor 2 P0139, P0159
Corresponding
DTC No.
SRT Set Timing
SRT is set as “CMPLT” after self-diagno sis has been performed one or more times. Completi on of SRT is
done regardle ss of whether the result is OK or NG. The set timing is different between OK and NG results and
is shown in the table below.
Example
Self-diagnosis result
All OK C as e 1 P0400 OK (1) — (1) OK (2) — (2)
Case 2 P0400 OK (1) — (1) — (1) — (1)
NG exists Case 3 P0400 OK OK — —
OK: Self-diagnosis is carried out and the resul t is OK .
NG: Self-diagnosis is carried out and the result is NG.
—: Self-diagnosis is not carried out.
Diagnosis
SRT of EGR “CMPLT” “CMPLT” “CMPLT” “CMPLT”
SRT of EGR “INCMP” “INCMP” “CMPLT” “CMPLT”
SRT of EGR “INCMP” “INCMP” “INCMP” “CMPLT”
← ON → OFF ← ON → OFF ← ON → OFF ← ON →
P0402 OK (1) — (1) — (1) OK (2)
P1402 OK (1) OK (2) — (2) — (2)
P0402 — (0) — (0) OK (1) — (1)
P1402 OK (1) OK (2) — (2) — (2)
P0402 — — — —
P1402 NG — NG
(1st trip)
DTC
1st trip DTC — 1st trip DT C
Ignition cycle
NG
(Consecutive
NG)
DTC
(= MIL ON)
When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will
indicate “CMPLT”. → Case 1 above
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EC-54
ON BOARD DIAGNOSTIC (OBD) SYSTEM
When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate
“CMPLT” at the time the respective self-diagnoses have at least one OK result. → Case 2 above
If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indicate “CMPLT”. → Case 3 above
The table above shows that the minimum number of cycles for setting SRT as “INCMP” is one (1) for each
self-diagnosis (Case 1 & 2) or two (2) for one of self-diagnoses (Case 3). However, in preparation for the state
emissions inspec tio n, it is unnecessary for ea c h se lf- dia gn os is to b e ex ec u ted tw ic e (Cas e 3) for th e fo llo w in g
reasons:
● The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.
● The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results.
● When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to “CMPLT” of SRT, the self-diagno-
sis memory must be erased from ECM after repair.
● If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.
NOTE:
SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out
prior to the state emission inspection even though the SR T indicates “CMPLT”.
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SRT Service Procedure
If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review
the flowchart diagnostic sequence on the next page.
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EC-55
ON BOARD DIAGNOSTIC (OBD) SYSTEM
*1 EC-52, "How to Read DTC and 1st
Trip DTC"
How to Display SRT Status
WITH CONSULT-II
Selecting “SRT STATUS” in “DTC CONFIRMATION” mode with
CONSULT-II.
For items whose SRT codes are set, a “CMPLT” is displayed on the
CONSULT-II screen; for items whose SRT codes are not set,
“INCMP” is displayed.
A sample of CONSULT-II display for SRT code is shown in the figure.
“INCMP” means the self-diagnosis is incomplete and SRT is not set.
“CMPLT” means the self-diagnosis is complete and SRT is set.
*2 EC-56, "How to Display SRT Status" *3 EC-57, "How to Set SRT Code"
PBIB2320E
SEF935Z
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EC-56
ON BOARD DIAGNOSTIC (OBD) SYSTEM
NOTE:
Though displayed on the CONSULT-II screen, “HO2S HTR” is not SRT item.
WITH GST
Selecting Service $01 with GST (Generic Sc an Tool)
NO TOOLS
A SRT code itself can not be displayed while only SRT status can be.
1. Turn ignition switch ON and wait 20 seconds.
2. SRT status is indicated as shown below.
● When all SRT codes are set, MIL lights up continuously.
● When any SRT codes are not set , MIL will flash periodically for 10 seconds.
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PBIB2317E
How to Set SRT Code
To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each
diagnosis may r equire a long pe riod of actual dr iving under var ious conditions.
WITH CONSULT-II
Perform correspon ding DTC Confirmati on Procedure one by one based on Perform ance Priority in the table
on EC-54, "
WITHOUT CONSULT-II
The most efficient driving pattern in which SRT codes can be properly set is explained on the next page. The
driving pattern should be performed one or more times to set all SRT codes.
SRT Item" .
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EC-57
Driving Pattern
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PBIB2906E
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EC-58
ON BOARD DIAGNOSTIC (OBD) SYSTEM
● The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driv-
ing habits, etc.
Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the
shortest.
Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed
within zone A.
*: Normal conditions refer to the following:
● Sea level
● Flat road
● Ambient air temperature: 20 - 30°C (68 - 86°F)
● Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30°C (68 - 86°F)], diagnosis may also be performed.
Pattern 1:
● The engine is started at the engine coolant temperature of −10 to 35°C (14 to 95°F)
(where the voltage between the ECM terminal 73 and ground is 3.0 - 4.3V).
● The engine must be operated at idle speed until the engine coolant temperat ure is greater than
70°C (158°F) (where the voltage between the ECM terminal 73 and ground is lower than 1.4V).
● The engine is started at the fuel tank temperature of warmer th an 0°C (32°F) (where the voltage
between the ECM terminal 107 and ground is less than 4.1V).
Pattern 2:
● When steady-state driving is performed again even after it is interrupted, each diagnosis can be con-
ducted. In this case, the time required for diagnosis may be extended.
Pattern 3:
● Operate vehicle following the driving pattern shown in the figure.
● Release the accel erat or pe dal dur ing decel erati ng ve hicle sp eed
from 90 km/h (56 MPH) to 0 km/h (0 MPH).
Pattern 4:
● The accelerator pedal must be held very steady during steady-
state driving.
● If the accelerator pedal is moved, the test must be conducted all
over again.
*1: Depress the acce lerator pe dal until vehicle speed is 90 km/h (56
MPH), then releas e the accelerator pedal and ke ep it released for
more than 10 sec onds. Depress the accelerato r pedal until vehicle
speed is 90 km/h (56 MPH) again.
*2: Checking the vehicle speed with GST is advised.
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PBIB2244E
L
Suggested Transmission Gear Position
Set the selector lever in the D position with the overdrive switch turned ON.
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EC-59
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
TEST VAL UE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II)
The following is the information specifi ed in Service $06 of SAE J1979.
The test val ue is a parameter us ed to determin e whether a sys tem/circuit di agnostic test is OK or NG whi le
being monitor ed by the ECM during self-diagnosis. The t est limit is a r eference value which is specified as the
maximum or minimum value and is compared with the test value being monitore d.
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be displayed on the GST screen.
Item Self-diagnostic test item DTC
Three way catalyst function (Bank 1)
CATALYST
Three way catalyst function (Bank 2)
EV AP cont rol system (Small leak)
EVAP
SYSTEM
EVAP control system purge flow monitoring P0441 06H 83H Min. 20 mV
EVAP control system (Very small leak)
Air fuel ratio (A/F) sensor 1 (Bank 1)
HO2S
Air fuel ratio (A/F) sensor 1 (Bank 2)
Heated oxygen sensor 2 (Bank 1)
Heated oxygen sensor 2 (Bank 2)
P0420 01H 01H Max. 1/128
P0420 02H 81H Min. 1
P0430 03H 02H Max. 1/128
P0430 04H 82H Min. 1
P0442 05H 03H Max.
P1442 05H 03H Max.
P0456 07H 03H Max.
P1456 07H 03H Max.
P0131 41H 8EH Min. 5mV
P0132 42H 0EH Max. 5mV
P2A00 43H 0EH Max. 0.002
P2A00 44H 8EH Min. 0.002
P0133 45H 8EH Min. 0.004
P0130 46H 0EH Max. 5mV
P0130 47H 8EH Min. 5mV
P0133 48H 8EH Min. 0.004
P0151 4CH 8FH Min. 5mV
P0152 4DH 0FH Max. 5mV
P2A03 4EH 0FH Max. 0.002
P2A03 4FH 8FH Min. 0.002
P0153 50H 8FH Min. 0.004
P0150 51H 0FH Max. 5mV
P0150 52H 8FH Min. 5mV
P0153 53H 8FH Min. 0.004
P0139 19H 86H Min. 10mV/500 ms
P0137 1AH 86H Min. 10 mV
P0138 1BH 06H Max. 10 mV
P0138 1CH 06H Max. 10mV
P0159 21H 87H Min. 10 mV/500 ms
P0157 22H 87H Min. 10 mV
P0158 23H 07H Max. 10 mV
P0158 24H 07H Max. 10mV
Test value (GST display)
TID CID
Te st limi t Conversion
1/128 mm
1/128 mm
1/128 mm
1/128 mm
2
2
2
2
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EC-60
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Item Self-diagnostic test item DTC
A/F sensor 1 heater (Bank 1)
A/F sensor 1 heater (Bank 2)
HO2S
HEATER
Heated oxygen sensor 2 heater (Ban k 1)
Heated oxygen sensor 2 heater (Ban k 2)
P0032 57H 10H Max. 5 mV
P0031 58H 90H Min. 5 mV
P0052 59H 11H Max. 5 mV
P0051 5AH 91H Min. 5 mV
P0038 2DH 0AH Ma x. 20 mV
P0037 2EH 8AH Min. 20 mV
P0058 2FH 0BH Max. 20 mV
P0057 30H 8 BH Min. 20 mV
Test value (GST display)
TID CID
Test limit Conversion
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC
WITH CONSULT-II
The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELFDIAG RESULTS” mode with CONSULT-II.
If DTCs are displayed for both ECM and TCM (Transmission control module), they need to be erased individually from the ECM and TCM (Transmission control module).
NOTE:
If the DTC is not for A/T related items (see EC-9, "
INDEX FOR DTC" ), skip steps 2 through 4.
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Turn CONSULT-II ON and touch “A/T”.
3. Touch “SELF-DIAG RESULTS”.
4. Touch “ERASE”. [The DTC in the TCM (Transmission control module) will be erased.] Then touch “BACK”
twice.
5. Touch “ENGINE”.
6. Touch “SELF-DIAG RESULTS”.
7. Touch “ERASE”. (The DTC in the ECM will be erased.)
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EC-61
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
SCIA5671E
WITH GST
The emission related diagnostic information in the ECM can be erased by selecting Service $04 with GST.
NOTE:
If the DTC is not for A/T related items (see EC-9, "
INDEX FOR DTC" ), skip step 2.
1. If the ignition switc h stays O N after repair work, be su re to turn ignition switc h O FF on ce . Wait at least 10
seconds and then turn it ON (engine stopped) again .
2. Perform AT-41, "
HOW TO ERASE DTC (WITH GST)" . (The DTC in TCM will be erased)
3. Select Service $04 with GST (Generic Scan Tool).
No Too ls
NOTE:
If the DTC is not for AT related items (see EC-9, "
INDEX FOR DTC" ), skip step 2.
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once.
Wait at least 10 seconds and then turn it ON (engine stopped) again.
2. Perform AT-41, "
HOW TO ERASE DTC (NO TOOLS)" . (The DTC in the TCM will be erased.)
3. Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal. Refer to
EC-64, "
● If the battery is disc onnected, the emission-related diagnostic information will be lost within 24
HOW TO SWITCH DIAGNOSTIC TEST MODE" .
hours.
● The following data are cleared when the ECM memory is erased.
– Diagnostic t rouble codes
– 1st trip diagnostic trouble codes
– Freeze frame data
– 1st trip freeze frame data
– System readiness test (SRT) codes
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EC-62
ON BOARD DIAGNOSTIC (OBD) SYSTEM
– Te st va lu es
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.
A
Malfunction Indicator Lamp (MIL) NBS002WD
DESCRIPTION
The MIL is located on the instrument panel.
1. The MIL will light up when the ignit ion sw itch is turne d ON with out the engine running. This is a bulb check.
If the MIL does not light up, refer to DI-26, "
or see EC-757, "
MIL AND DA TA LINK CONNECTOR" .
2. When the engine is started, the MIL sho u ld go off.
If the MIL remains on, the on board diagnostic system has
detected an engine system malfunction.
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following thre e fun c tio ns .
Diagnostic Test
Mode
Mode I Ignition switch in
KEY and ENG.
Status
ON position
Engine stopped
Function Explanation of Function
BULB CHECK This function checks the MIL bulb for damage (blown,
WARNING LAMPS" ,
SEF217U
open circuit, etc.).
If the MIL does not come on, check MIL circuit.
EC
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Engine running MALFUNCTION
Mode II Ignition switch in
ON position
Engine stopped
WARNING
SELF-DIAGNOSTIC
RESULTS
This is a usual driving condition. When a malfunction is
detected twice in two consecutive drivin g cycl es (two trip
detection logic), the MIL will light up to inform the drive r
that a malfunction has been detected.
The following malfunctions will light up or blink the MIL in
the 1st trip.
● Misfir e (Possible three way catalyst damage)
● One trip det ect ion di agnoses
This function allows DTCs and 1st trip DTCs to be read.
When there is an op en c irc ui t o n M IL c irc ui t, t he EC M c an no t warn the driver by lighting up MIL w h en th ere is
malfunction on engine control system.
Therefore, wh en e lec tri ca l controlled t hro ttl e and part of ECM rel ate d di ag noses are co nt inu ou s ly d etected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunction.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
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EC-63
ON BOARD DIAGNOSTIC (OBD) SYSTEM
MIL Flashing Without DTC
When any SRT co de s ar e not set , MI L may flas h w ith ou t D TC . For th e details, refer to EC-56, "How to Display
SRT Status" .
HOW TO SWITCH DIAGNOSTIC TEST MODE
NOTE:
● It is better to count the time accurately with a clock.
● It is impossible to switch the diagno stic mode when an accelerator pe dal position sensor circui t
has a malfunction.
● Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.
How to Set Diagnostic Test Mo de II (Self-diagnostic Results)
1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quickly five times wit hin 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts
blinking.
NOTE:
Do not rele ase t h e a cc eler a to r peda l for 1 0 se con ds i f MIL ma y s tart blinking on the hal fwa y o f th i s
10 seconds. This blinking is displayi ng SRT status and is continued for anothe r 10 seconds. Fo r
the details, refer to EC-56, "
4. Fully release the accelerator pedal.
ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).
NOTE:
Wait until the same DTC (or 1st trip DTC) appears to confirm all DTCs certainly.
How to Display SRT Status" .
PBIB0092E
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to EC-64, "How to Set Diagnostic Test
Mode II (Self-diagnostic Res ults)" .
2. Fully depress the accelerator pedal and keep it for more than 10 seconds.
The emission-related diagnostic information has been erased from the ba ckup memory in the ECM.
3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.
DIAGNOSTIC TEST MODE I — BULB CHECK
In this mode, the MI L on the in strumen t panel should stay ON. If it rem ains OFF, check the bulb. Refer to DI-
26, "WARNING LAMPS" or see EC-757, "MIL AND DATA LINK CONNECTOR" .
DIAGNOSTIC TEST MODE I — MALFUNCTION WARNING
MIL Condition
ON When the malfunction i s det ected.
OFF No malfunction.
This DTC number is clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS)
DIAGNOSTIC TEST MODE II — SELF-DIAGNOSTIC RESULTS
In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MIL as shown below.
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EC-64
ON BOARD DIAGNOSTIC (OBD) SYSTEM
The DTC and 1s t trip DTC are displaye d at the same time. If the MIL does not illu minate in diagnost ic test
mode I (Malfu nctio n wa rning ), al l dis play ed it ems a re 1st trip D TCs. If onl y one code is di spla yed wh en th e MIL
illuminates in diagnostic test mode II (SE LF-DIAGNOSTIC RESULTS), it is a DTC; if two or m ore codes are
displayed, they may be ei the r DTCs or 1s t tri p DTCs . DTC No . is sa me as tha t of 1s t trip DTC. Th es e unide ntified codes can b e iden tifie d by us ing th e CON SULT-II or GST. A DTC will be used as an exam ple fo r how to
read a code.
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PBIB3005E
A particular trouble code can be identified by the number of four-digit numeral flashes. The “zero” is indicated
by the number of ten flashes. The “A” is indicated by the number of eleven flashes. The length of time the
1,000th-digit n umeral flas hes on a nd off is 1.2 sec onds co nsisting of an ON (0. 6-secon d) - OFF (0.6 -second)
cycle.
The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle.
A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the later
numeral appears on the display 1.3 seconds after the former numeral has disappeared.
A change from one troubl e code to an other occurs at an interval of 1.8 -se c on d OF F.
In this way, all the de te ct ed m al f un ct ions a r e c la ss ifi ed by t he i r D T C nu mb ers . Th e DTC 00 00 ref e r s to no m al function. (See EC-9, "
How to Erase Diagnostic Test Mo de II (Self-diagnostic Results)
The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to EC-
64, "How to Erase Diagnostic Test Mode II (Self-diagnostic Results)" .
● If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours.
● Be careful not to erase the stored memory before starting trouble diagnoses.
INDEX FOR DTC" )
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EC-65
ON BOARD DIAGNOSTIC (OBD) SYSTEM
OBD System Operation Chart NBS002WE
RELATIONSHIP BETWEEN MIL, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMS
● When a malfunction is detected for the first time, the 1st trip DTC and the 1 st trip freeze fram e data are
stored in the ECM memory.
● When the same malfunct ion is detect ed in two consec utive trips, the DT C and the freez e frame data are
stored in the ECM m emory, and th e MIL will come on. For details, refer to EC-47, "
Logic" .
● The MIL will go off after the vehicle is driven 3 times (driving pattern B) with no malfunction. The drive is
counted only when the recorde d driving pattern is met (as stored in the ECM). If another malfunction
occurs while counting, the counter will reset.
● The DTC and the freeze f rame data will be stored until the vehicle is driven 40 times (dr iving pattern A)
without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and
Fuel Injection System, the DT C and freeze frame data will be stored unti l the vehicle is driven 80 ti mes
(driving pattern C) without the same malfunction recurring. The “TIME” in “SELF-DIAGNOSTIC
RESULTS” mode of CONSULT-II will count the number of times the vehicle is driven.
● The 1st trip DTC is not displayed when the self-diagnosis results in OK for the 2nd trip.
SUMMARY CHART
Items Fuel Injection System Misfire Other
MIL (goes off) 3 (pattern B) 3 (pattern B) 3 (pattern B)
DTC, Freeze Frame Data (no
display)
1st Trip DTC (clear)
1st Trip Freeze Frame Data
(clear)
For details about patterns B and C under “Fuel Injection System” and “Mi sfire”, see EC-68, "EXPLANATION FOR DRIVING PATTERNS
FOR “MISFIRE <EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”" .
For details about patterns A and B under Other, see EC-70, "
<EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”" .
*1: Clear timing is at the moment OK is detected.
*2: Clear timing is when the same malfunct ion is dete cte d in the 2nd trip.
80 (pattern C) 80 (pattern C) 4 0 (pattern A)
1 (pattern C), *
*1, *2 *1, *2 1 (pattern B)
1
EXPLANATION FOR DRIVING PATTERNS EXCEPT FOR “MISFIRE
1 (pattern C), *
1
Two Trip Detection
1 (pattern B)
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EC-66
ON BOARD DIAGNOSTIC (OBD) SYSTEM
RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING P ATTERNS FOR “MISFIRE
” <EXHAUST QUALITY DETERIORAT ION>, “FUE L INJECTION SYSTEM”
A
EC
C
D
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*1: When the same malfunction is
detected in two consecutive trips,
MIL will light up.
*4: The DTC and the freeze frame data
will not be displayed any longer after
vehicle is driven 80 times (pattern C)
without the same malfunction. (The
DTC and the freeze frame data still
remain in EC M.)
*7: When the same malfunction is
detected in the 2nd trip, the 1st trip
freeze frame data will be cleared.
*2: MIL will go off after vehicle is driven
3 times (pattern B) without any malfunctions.
*5: When a malfunction is detected for
the first time, the 1st trip DTC and
the 1st trip freeze frame data will be
stored in ECM.
*8: 1st trip DTC will be cleared when
vehicle is driven once (pattern C)
without the same malfunction after
DTC is stored in ECM.
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SEF392S
*3: When the same malfunction is
detected in two consecutive trips, the
DTC and the freeze frame data will
be stored in ECM.
*6: The 1st trip DTC and the 1st trip
freeze frame data will be cleared at
the moment OK is detected.
Revision: 2005 November 2006 Q45
EC-67
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EXPLANATION FOR DRIVING PATTERNS FOR “MISFIRE <EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”
<Driving Pattern B>
Driving pattern B means the v ehicle operati on as follows:
All components and systems should be monitored at least once by the OBD system.
● The B counter will be clear ed when the malf unction is detected once rega rdless of the driving pattern.
● The B counter will be counted up when driving pattern B is satisfied without any malfunction.
● The MIL will go off when the B counter reaches 3. (*2 in “OBD SYSTEM OPERATION CHART”)
<Driving Pattern C>
Driving pattern C means the vehicle operation as follows:
The following conditions should be satisfied at the same ti me:
Engine speed: (Engine speed in the freeze frame data) ±375 rpm
Calculated load value: (Calculated load value in the freeze frame data) x (1±0.1) [%]
Engine coolant temperature (T) condition:
● When the freeze frame data shows lower than 70°C (158°F), T should be lower than 70°C (158°F).
● When the free ze fram e dat a show s hig her tha n or equa l to 70 °C (158°F), T sh ould be hig her tha n or eq ual
to 70°C (158°F).
Example:
If the stored freeze frame data is as follows:
Engine speed: 850 rpm, Calculated load value: 30%, Engine coolant temperat ure: 80°C (176°F)
To be satisfied with driving pattern C, the vehicle should run under the following conditions:
Engine speed: 475 - 1,22 5 rpm, Calcu lat ed lo ad va lue: 2 7 - 33 %, Eng ine cool ant te mper atur e: mo re tha n 70 °C
(158°F)
● The C counter will be cleared when the malfunction is detected regardless of vehicle conditions above.
● The C count er wil l be c ount ed up w hen ve hicl e con ditio ns ab ove i s sat isfie d wit hout the sa me ma lfunct ion .
● The DTC will not be displayed after C counter reaches 80.
● The 1st trip DTC will be c le are d w h en C co un ter is counted once wi th ou t the sa m e m alf un ction after DTC
is stored in ECM.
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EC-68
ON BOARD DIAGNOSTIC (OBD) SYSTEM
RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPT FOR
“MISFIRE <EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”
A
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C
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*1: When the same malfunction is
detected in two consecutive trips,
MIL will light up.
*4: The DTC and the freeze frame data
will not be displayed any longer after
vehicle is driven 40 times (pattern A)
without the same malfunction.
(The DTC and the freeze frame data
still remain in ECM.)
*7: When the same malfunction is
detected in the 2nd trip, the 1st trip
freeze frame data will be cleared.
*2: MIL will go off after vehicle is driven
3 times (pattern B) without any malfunctions.
*5: When a malfunction is detected for
the first time, the 1st trip DTC and
the 1st trip freeze frame data will be
stored in ECM.
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SEF393SD
*3: When the same malfunction is
detected in two consecutive trips, the
DTC and the freeze frame data will
be stored in ECM.
*6: 1st trip DTC will be cleared after
vehicle is driven once (pattern B)
without the same malfunction.
Revision: 2005 November 2006 Q45
EC-69
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EXPLANATION FOR DRIVING PATTERNS EXCEPT FOR “MISFIRE <EXHAUST QUALITY
DETERIORATION>”, “FUEL INJECTION SYSTEM”
<Driving Pattern A>
● The A counter will be cleared when the malfunction is detected regardless of (1) - (4).
● The A counter will be counted up when (1) - (4) are satisfied without the same malfunction.
● The DTC will not be displayed after the A counter reaches 40.
<Driving Pattern B>
Driving pattern B means the v ehicle operati on as follows:
All components and systems should be monitored at least once by the OBD system.
● The B counter will be clear ed when the malf unction is detected once rega rdless of the driving pattern.
● The B counter will be counted up when driving pattern B is satisfied without any malfunctions.
● The MIL will go off when the B counter reaches 3 (*2 in OBD SYSTEM OPERA TION CHART).
AEC574
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EC-70
BASIC SERVICE PROCEDURE
BASIC SERVICE PROCEDURE PFP:00018
Basic Inspection NBS001QR
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2. Open engin e hood and check the following:
– Harness connectors for improper connections
– Wiring harness for improper connections, pinches and cut
– V acuum hoses for splits, kinks and improper connections
– Hoses and ducts for leaks
– Air cleaner clog ging
– Gasket
3. Confirm that electrical or mechanical lo ads are not appli ed.
– Headlamp switch is OFF.
– Air conditioner swit ch is OFF.
– Rear window defogger switch is OFF.
– Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
SEF983U
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5. Run engine at about 2,000 rpm for about 2 minutes under no
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. REPAIR OR REPLACE
Repair or replace components as necessar y according to corresponding Diagnostic Procedure.
>> GO TO 3
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EC-71
BASIC SERVICE PROCEDURE
3. CHECK TARGET IDLE SPEED
With CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no load.
2. Rev engine (2,000 to 3,000 rpm) two or three times under no
load, then run engine at idle speed for about 1 minute.
3. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Refer to EC-76
650 ± 50 rpm (in P or N position)
.
PBIA8513J
Without CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no load.
2. Rev engi ne ( 2,00 0 t o 3, 0 00 rp m) two or th r ee time s un de r no loa d, th en ru n en gin e at id l e sp eed f or ab out
1 minute.
3. Check idle speed. Refer to EC-76
650 ± 50 rpm (in P or N position)
OK or NG
OK >> GO TO 10.
NG >> GO TO 4.
.
4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-77, "
>> GO TO 5.
Accelerator Pedal Released Position Learning" .
5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-78, "
Throttle Valve Closed Position Learning" .
SEF058Y
>> GO TO 6.
Revision: 2005 November 2006 Q45
EC-72
BASIC SERVICE PROCEDURE
6. PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-78, "
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes >> G O T O 7.
No >> 1. Follow the instruction of Idle Air Volume Learning.
Idle Air Volume Learning" .
2. GO TO 4.
7. CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Refer to EC-76
650 ± 50 rpm (in P or N position)
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle sp eed. Refer to EC-76
650 ± 50 rpm (in P or N position)
OK or NG
OK >> GO TO 10.
NG >> GO TO 8.
.
.
SEF174Y
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8. DETECT MALFUNCTIONING PART
Check the Followin g.
● Check camshaft position sensor (PHASE) and circuit. Refer to EC-379 .
● Check crankshaft position sensor (POS) and circuit. Refer to EC-370 .
OK or NG
OK >> GO TO 9.
NG >> 1. Repair or replace.
2. GO TO 4.
9. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initializat ion of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-202, "
ECM Re-Communicating Function" .
>> GO TO 4.
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EC-73
BASIC SERVICE PROCEDURE
10. CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light. Refer to EC-76
12 ± 5° BTDC (in P or N position)
OK or NG
OK >> GO TO 19.
NG >> GO TO 11.
.
11. PERFORM ACCELERAT OR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-77, "
>> GO TO 12.
Accelerator Pedal Released Position Learning" .
PBIB2435E
12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-78, "
>> GO TO 13.
Throttle Valve Closed Position Learning" .
13. PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-78, "
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes >> GO TO 14.
No >> 1. Follow the instruction of Idle Air Volume Learning.
Idle Air Volume Learning" .
2. GO TO 4.
14. CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Refer to EC-76
650 ± 50 rpm (in P or N position)
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed. Refer to EC-76
.
.
650 ± 50 rpm (in P or N position)
OK or NG
OK >> GO TO 15.
NG >> GO TO 17.
Revision: 2005 November 2006 Q45
EC-74
SEF174Y
BASIC SERVICE PROCEDURE
15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light. Refer to EC-76
12 ± 5° BTDC (in P or N position)
OK or NG
OK >> GO TO 19.
NG >> GO TO 16.
.
16. CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-39, "
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.
TIMING CHAIN" .
17. DETECT MALFUNCTIONING PART
Check the followin g.
● Check camshaft position sensor (PHASE) and circuit. Refer to EC-379 .
● Check crankshaft position sensor (POS) and circuit. Refer to EC-370 .
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18. CHECK ECM FUNCTION
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PBIB2435E
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1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initializat ion of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-202, "
ECM Re-Communicating Function" .
>> GO TO 4.
19. INSPECTION END
Did you replace ECM, referring this Basic Inspection procedure?
Yes or No
Yes >> 1. Perform EC-77, "VIN Registration" .
2. INSPECTION END
No >> INSPECTION END
Revision: 2005 November 2006 Q45
EC-75
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BASIC SERVICE PROCEDURE
Idle Speed and Ignition Timing Check NBS001QS
IDLE SPEED
With CONSULT-II
Check idle speed in “DATA MONITOR” mode with CONSULT-II.
SEF058Y
With GST
Check idle speed with GST.
IGNITION TIMING
Any of following two methods may be used.
Method A
1. Attach timing light to loop wire as shown.
2. Check ignition timing.
Method B
1. Remove ignition coil No. 1.
2. Connect ignition coil No. 1 and spark plug No. 1 with suitable
high-tension wire as s ho wn, and attach timing li ght clamp to this
wire.
PBIB2436E
PBIB2424E
PBIB2437E
Revision: 2005 November 2006 Q45
EC-76
BASIC SERVICE PROCEDURE
A
EC
C
SEF166Y
3. Check ignit ion timing.
VIN Registration NBS001QU
DESCRIPTION
VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).
OPERATION PROCEDURE
With CONSULT -II
1. Check the VIN of the vehicle and note it. Refer to GI-46, "IDENTIFICATION INFORMATION" .
2. Turn ignition switch ON and engine stopped.
3. Select “VIN REGISTRATION” in “WORK SUPPORT” mode.
4. Follow the instruction of CONSULT-II display.
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PBIB2435E
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PBIB2242E
Accelerator Pedal Released Position Learning NBS001QV
DESCRIPTION
Accelerator Peda l R e le as ed Pos ition Learning i s an op era tion to learn the f ul ly re le as ed position of the accelerator pedal by mo ni tor i ng th e a cc el era to r pe dal p os it i on s enso r out put si gn al. It mu st be per fo r med ea ch ti me
harness conne ctor of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure t hat accelerator pedal is fully released.
2. Tu rn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Tu rn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
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EC-77
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Throttle Valve Closed Position Learning NBS001QW
DESCRIPTION
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttl e position sensor output signal. It mus t be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wa it at least 10 seco nds.
Make sure that throttle valve m oves during above 10 seconds by confirming the operating sound.
Idle Air Volume Learning NBS001QX
DESCRIPTION
Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:
● Each time electric throttle control actuator or ECM is replaced.
● Idle speed or ignition timing is out of specification.
PREPARATION
Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for ev en a moment.
● Battery voltage: More than 12.9V (At idle)
● Engine coolant temperature: 70 - 99°C (158 - 210°F)
● PNP switch: ON
● Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine
is started the headlamp will not be illuminated.
● Steering wheel: Neutral (Straight-ahead position)
● V ehicle speed: Stopped
● Transmission: Warmed-up
– With CONSULT-II: Drive v ehicle un til “ATF TEMP SE 1” in “DATA MONITOR” mo de of “A/T ” syst em indi-
cates less than 0.9V .
– Without CONSU LT-II: Drive vehicle for 10 minut es.
OPERATION PROCEDURE
With CONSULT-II
1. Perform EC-77, "Accelerator Pedal Released Position Learning" .
2. Perform EC-78, "
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
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Throttle Valve Closed Position Learning" .
SEF217Z
EC-78
BASIC SERVICE PROCEDURE
6. Touch “START” and wait 20 seconds.
7. Make sure t hat “C MPLT” is displayed on CON SULT-II screen. I f
“CMPLT” is not displayed, Idle Air Volume Learning will not be
carried out succe ssfully. In this case, find the cause of th e incident by referring to the DIAGNOSTIC PROCEDURE below.
8. Rev up the engine two or three times and make sure that id le
speed and ignition timing are w ithin the specifications.
ITEM SPECIFICATION
Idle speed 650 ± 50 rpm (in P or N position)
Ignition timing 12 ± 5° BTDC (in P or N position)
Without CONSULT-II
NOTE:
● It is better to count the time accurately with a clock.
● It is impossible to switch the diagnostic mode when an acce lerator pedal position sensor circ uit
has a malfunction.
1. Perform EC-7 7, "
2. Perform EC-7 8, "
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully re lease the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the MIL turn ed ON.
10. Start engine and let it idle.
11. Wait 20 seconds.
Accelerator Pedal Released Position Learning" .
Throttle Valve Closed Position Learning" .
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12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the
specifications.
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EC-79
BASIC SERVICE PROCEDURE
ITEM SPECIFICATION
Idle speed 650 ± 50 rpm (in P or N position)
Ignition timing 12 ± 5° BTDC (in P or N position)
13. If idle spee d and ign iti on ti ming are no t wit hin t he spe cific ati on, I dle Ai r Volume Learning will not b e carr ied
out successf ully. In this case , fin d th e cau se of t he in cide nt by r efer ring to t he Di agno stic P roced ure belo w.
DIAGNOSTIC PROCEDURE
If idle air volume learning cannot be performed successfully, proceed as follows:
1. Check that throttle valve is fully c losed.
2. Check PCV valve operation.
3. Check that downstream of throttle valve is free from air leakage.
4. When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the incident.
It is useful to perform EC-135, "
5. If any of the following conditions occu r after the engine has started, eliminate the cau se of the
incident and perform Idle Air Volume Learning all over again:
– Engine stalls.
– Erroneous idle.
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
Fuel Pressure Check NB S0 01QY
FUEL PRESSURE RELEASE
With CONSULT-II
1. Turn ignition switch ON.
2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel
pressure.
5. Turn igniti on switch OFF.
Without CONSULT-II
1. Remove fuel pump fuse located in fuse box.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn igniti on switch OFF.
5. Reinstall fuel pump fuse after ser vicing fuel system.
FUEL PRESSURE CHECK
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
● Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.
● Prepare pans or saucers under the disconnecte d fuel l ine be caus e the fu el ma y spil l out. The fuel
pressure cannot be completely released because F50 models do not have fuel return system.
1. Release fuel pressure to zero. Refer to EC-80, "
FUEL PRESSURE RELEASE" .
SEF214Y
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EC-80
BASIC SERVICE PROCEDURE
2. Install the inline fuel quick disconnected fitting between fuel
damper and fuel tube.
3. Connect the fuel pressure test gauge (quick connector adapter
hose) to the inline fuel quick disconnected fitting.
4. Turn ignition switch ON and check for fuel leakage.
5. Start engine and check for fuel leakage.
6. Read the indication of fuel pressure gauge.
At idling:
Approximate ly 350 kPa
2
(3.57 kg/cm
, 51 psi)
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7. If result is unsatisfactory, go to next step.
8. Check the following.
● Fuel hoses and fuel tubes for clogging
● Fuel filter for clogging
● Fuel pump
● Fuel pressure regulator for clogging
If OK, replace fuel pressure re gulator.
If NG, repair or replace.
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EC-81
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS PFP:00004 Trouble Diagnosis Introduction NBS001QZ
INTRODUCTION
The engine has an ECM to control major systems such as fuel control, ignition co ntrol, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essential that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vacuum leaks, fouled spark plugs, or other malfunctions with the engine.
MEF036D
It is much more difficult to diagno se an i nciden t that oc curs in termittently rather than continuously. Most intermittent incidents are
caused by po or electric connec tio ns o r i mp r op er w iri ng . I n t his case,
careful checking of suspected circuits may help prevent the replacement of good parts.
A visual chec k only may no t find the cause of the incidents. A road
test with CONSULT-II (or GST) or a circuit tester connec ted should
be performed. Follo w the Work Flow on EC-83
Before undertaking a ctual checks, take a fe w minutes to talk with a
customer who approaches with a driveability complaint. The customer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditio ns th ey oc cur. A Diagnostic Wo rksh eet li ke th e exa mple
on EC-87
Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electronically controlled en gine vehicle.
should be used.
.
SEF233G
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EC-82
WORK FLOW
Overall Sequence
TROUBLE DIAGNOSIS
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EC-83
TROUBLE DIAGNOSIS
Detailed Flow
1. GET INFORMATION FOR SYMPTOM
Get the detailed inf ormation fro m the cus tomer abou t the symptom (the condi tion and th e environmen t when
the incident/malfunction occurred) using the EC-86, "
>> GO TO 2.
DIAGNOSTIC WORKSHEET" .
2. CHECK DTC*
1. Check DTC*1 .
2. Perform the following procedure if DTC*
– Record DTC*
– Erase DTC*
.)
– Study the relationship between the cause detected by DTC*
tomer. (Symptom Matrix Chart is useful. Refer to EC-91
3. Check related service bulletins for information.
Is any symptom described and any DTC detected?
Symptom is described, DTC*1 is displayed>>GO TO 3.
Symptom is described, DTC*
Symptom is not described, DTC*
1
1
is displayed.
1
and freeze frame data*2 . (Print them out with CONSULT-II or GST.)
1
. (Refer to EC-61, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"
1
and the symptom described by the cus-
.)
1
is not displayed>>GO TO 4.
1
is displayed>>GO TO 5.
3. CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer (except MIL ON).
DIAGNOSIS WORK SHEET is useful to verify the incident.
Connect CONSULT-II to the vehicl e in “DATA MONITOR (AUTO TRIG)” mode and check real time diagnosis
results.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 5.
4. CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
DIAGNOSIS WORK SHEET is useful to verify the incident.
Connect CONSULT-II to the vehicl e in “DATA MONITOR (AUTO TRIG)” mode and check real time diagnosis
results.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 6.
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EC-84
TROUBLE DIAGNOSIS
5. PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC Confirm ation Proced ure for the displ ayed DTC*
again.
At this time, always connect CONSULT-II to the vehicle, and c heck diagnostic results in re al time on “DATA
MONITOR (AUTO TRIG)”.
If two or more DTCs *
diagnosis order.
NOTE:
● Freeze frame data*
● Perform Overall Function Check if DTC Confirmation Procedure is not included on Service Manual. This
simplified check procedure is an effective alternative though DTC*
If the result of Overall Function Check is NG, it is the same as the detection of DTC*
tion Procedure.
1
Is DTC*
Yes >> G O T O 10.
No >> Check according to EC-145, "
detected?
1
are detected, refer to EC-88, "DTC Inspection Priority Chart" and determine trouble
2
is useful if the DTC*1 is not detected.
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
1
, and then make sure that DTC*1 is detected
1
cannot be d etec te d dur in g th is ch ec k.
1
by DTC Confirma-
6. PERFORM BASIC INSPECTION
Perform EC-71, "
With CONSULT-II>>GO TO 7.
Without CONSULT-II>>GO TO 9.
Basic Inspection" .
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7. PERFORM DATA MONITOR (SPEC) MODE
With CONSULT-II
Make sure that “MAS A/F SE-B1”, “B/FUEL SCHDL”, and “A/F
ALPHA-B1”, “A/F ALPHA-B2” are within the SP value using CONSULT-II “DATA MONITOR (SPEC)” mode. Refer to EC-136, "
nostic Procedu re" .
Are they within the SP value?
Yes >> G O T O 9.
No >> GO TO 8.
Diag-
8. DETECT MALFUNCTIONING PART BY TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Detect malfunctioning part according to EC-135, "
Is malfunctioning part detected?
Yes >> G O T O 11.
No >> GO TO 9.
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
9. DETECT MALFUNCTIONING SYSTEM BY SYMPTOM MATRIX CHART
Detect malfunctioning system according to EC-91, "
in step 4, and determine the trouble diagnosis order based on possible causes and symptom.
Symptom Matrix Chart" based on the confirmed symptom
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>> GO TO 10.
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EC-85
TROUBLE DIAGNOSIS
10. DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic P roc ed ure in EC s ec tio n d es cri be d ba s ed on op en ci rcu it inspection. A short circ u it in sp ec tion
is also required for the circuit check in the Diagnostic Procedure. For details, refer to Circuit Inspection in GI-
26, "How to Perform Efficient Diagnosis for an Electric al Incident" .
Is malfunctioning part detected?
Yes >> GO TO 11.
No >> Monitor input data from related sensors or check voltage of related ECM terminals using CON-
SULT-II. Refer to EC-129, "
Terminals and Reference Value" .
CONSULT-II Reference Value in Data Monitor Mode" , EC-105, "ECM
11. REPAIR OR REPLACE THE MALFUNCTIONING PART
1. Repair or replace the malfunctioning part.
2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replacement.
3. Check DTC. If DTC is displayed, erase it, refer to EC-61, "
NOSTIC INFORMATION" .
HOW TO ERASE EMISSION-RELATED DIAG-
>> GO TO 12.
12. FINAL CHECK
When DTC was detected in step 2, perform DTC Confirmation Procedure or Overall Function Check again,
and then make sure that the malfunction have been repaired securely.
When symptom was describ ed from th e custome r, refer to confirmed sympt om in step 3 or 4, and ma ke sure
that the symptom is not detected.
OK or NG
NG (DTC*1 is detected)>>GO TO 10.
NG (Symptom remains)>>GO TO 6.
OK >> 1. Before returning the vehicle to the customer, make sure to erase unnecessary DTC*
*1: Include 1st trip DTC.
*2: Include 1st trip freeze frame data.
and TCM (Transmission Control Module). (Refer to EC-61, "
RELATED DIAGNOSTIC INFORMATION" and AT-39, "HOW TO ERASE DTC" .)
2. If the completion of SRT is needed, drive vehicle under the specific driving pattern. Refer to EC-
58, "Driving Pattern" .
3. INSPECTION END
HOW TO ERASE EMISSION-
DIAGNOSTIC WORKSHEET
Description
There are many operating conditions that lead to the malfunction of
engine compone nt s. A go od gr asp of such c ondi tio ns can make t roubleshooting f aster and more accurate.
In general, each customer feels differently about a incident. It is
important to fully understand the symptoms or conditions for a customer complaint.
Utilize a diagn osti c wo rksh eet li ke th e one on th e ne xt page in ord er
to organize all the information for troubl eshooting.
Some condition s may caus e the M IL to com e on st ea dy or bl ink an d
DTC to be detected. Examples:
● V ehicle ran out of fuel, which caused the engine to misfire.
● Fuel filler cap was left off or incorrectly screwed on, allowing fuel
to evaporate into the atmosphere.
1
in ECM
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EC-86
Worksheet Sample
TROUBLE DIAGNOSIS
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EC-87
TROUBLE DIAGNOSIS
DTC Inspection Priority Chart NBS002WF
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
● If DTC U1000 or U1001 is displayed with o ther DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-156, "
● If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to EC-159, "
Priority Detected items (DTC)
1
DTC U1010 CAN COMMUNICATION" .
● U1000 U100 1 CAN communication line
● U1010 CAN com m uni cat ion
● P0101 P0102 P0103 Mass air flow sensor
● P0112 P0113 P0127 Intake air temperature sensor
● P0117 P0118 P0125 Engine coolant temperature sensor
● P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor
● P0128 Thermostat funct ion
● P0181 P0182 P0183 Fuel tank temperature sensor
● P0327 P0328 P0332 P0333 Knock sensor
● P0335 Crankshaft position sensor (POS)
● P0340 Camsha ft posit io n senso r (PHASE)
● P0460 P0461 P0462 P0463 Fuel level sensor
● P0500 Vehicle speed sensor
● P0605 ECM
● P0643 Sensor power sup pl y
● P0700 TCM
● P0705 Park/Neut ral position (PNP) switch
● P0850 Park/Neut ral position (PNP) switch
● P1610 - P1615 NATS
● P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Revision: 2005 November 2006 Q45
EC-88
TROUBLE DIAGNOSIS
Priority Detected items (DTC)
2 ● P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater
● P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater
● P0075 P0081 I ntake valve timing control solenoid valve
● P0130 P0131 P01 32 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1
● P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2
● P0441 EVAP control system purge flow monitoring
● P0443 P0444 P0445 EVAP canister purge volume control solenoid valve
● P0447 P0448 EVAP canister vent control valve
● P0452 P0453 EVAP control system pressure sensor
● P0550 Pow er steer ing pressure sensor
● P0603 ECM power supply
● P0710 P0717 P0720 P0740 P0744 P0745 P1730 P1752 P1754 P1757 P1759 P176 2 P 1764 P1767 P1769 P1772
P1774 A/T related sensors, solenoid valves and switc hes
● P1140 P1145 Intake valve timing control position sensor
● P1217 Engine over temperature (OVERHEAT)
● P1220 Fuel pump control module
● P1490 P1491 Vacuum cut valve bypass valve
● P1805 Brake switch
● P2100 P2103 Throttle control motor relay
● P2101 Electric throttle control function
● P2118 Throttle control motor
3
● P0011 P0021 Intake valve timing control
● P0171 P0172 P0174 P0175 Fuel injection system function
● P0300 - P0308 Misfire
● P0420 P0430 Thr ee w ay ca talyst functi on
● P0442 P0456 P14 42 P1456 EVAP control system (SMALL LEAK, VERY SMALL LEAK)
● P0455 EVAP control system (GROSS LEAK)
● P0506 P0507 Idle speed control system
● P1148 P1168 Closed loop control
● P1211 TCS control unit
● P1212 TCS communication line
● P1564 ICC steering switch / ASCD steering switch
● P1568 ICC command value
● P1572 ICC brake switch / ASCD brake switch
● P1574 ICC vehi cl e speed sensor / ASCD vehicle speed sensor
● P1715 Turbine revolution sensor
● P1800 VIAS control solenoid valve
● P2119 Electric throttle control actuator
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EC-89
TROUBLE DIAGNOSIS
Fail-Safe Chart NBS002WG
When the DTC listed below is de tected, the ECM enters fail-safe mode and the MIL light s up.
DTC No. Detected items Engine operating condition in fail-safe mode
P0102
P0103
P0117
P0118
P0122
P0123
P0222
P0223
P2135
P0643 Sensor po we r sup pl y ECM stops the electric throttle control actuator control, throttle va lve is mai ntained at a
P2100
P2103
P2101 Electric throttle control
P2118 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a
P2119 Electric thrott le cont rol
P2122
P2123
P2127
P2128
P2138
Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
Engine coolant temperature sensor circuit
Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
Throttle control motor relay EC M stops the elec tric thr ottle cont r ol ac tua to r contr ol, th rott le va lve is mai ntained at a
function
actuator
Accelerator pedal position
sensor
Engine coolant temperature will be determined by ECM based on the time after turning
ignition switch ON or START.
CONSULT-II disp lays th e engi ne coolant temperature decided by ECM.
Condition
Just as ignition switch is turned
ON or START
More than approx. 4 minutes after
ignition ON or START
Except as shown above
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valv e to be slower tha n the normal
condition.
So, the acceleration will be poor.
fixed opening (approx. 5 degrees) by the retur n spring .
fixed opening (approx. 5 degrees) by the retur n spring .
ECM stops the electric throttle control actuator control, thrott le va lve is mai ntained at a
fixed opening (approx. 5 degrees) by the retur n spring .
fixed opening (approx. 5 degrees) by the retur n spring .
(When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulat ing the thro ttl e opening around the
idle position. The engine speed will not rise more than 2,000 rpm .
(When throttle valve opening angle in fail-safe m ode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less.
(When ECM detects the throttle valve is stuck open:)
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops,
the engine stalls.
The engine can restart in N or P position, and engine speed will not exceed 1,000 rpm or
more.
The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valv e to be slower tha n the normal
condition.
So, the acceleration will be poor.
Engine coolant temperature decided
(CONSULT-II display)
40°C (104°F)
80°C (176°F)
40 - 80°C (104 - 176°F)
(Depends on the time)
● When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when
there is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected
as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by
means of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands
the driver to repair the malfunctio n.
Engine operating condition in fail-safe mode Eng ine speed will not rise more than 2,500 rpm due to the fuel cut
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EC-90
TROUBLE DIAGNOSIS
Symptom Matrix Chart NBS001R2
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
A
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HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERA TURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel
Air Positive crankcase ventilation sys-
IgnitionIncorrect ignition timing adjustment33111 11 1 EC-71
Main power supply and ground circuit 22333 33 23 EC-146
Mass air flow sensor circuit
Engine coolant temperature sensor circu it
A/F sensor 1 circuit
Throttl e positio n sensor cir cuit
Accelerator pedal position sensor circuit 3 2 1
Knock sensor circuit 2 3 EC-365
Crankshaft position sensor (POS) circuit 2 2 EC-370
Camshaft position sensor (PHASE) circuit 3 2 EC-379
Vehicle speed signal circuit 2 3 3 3 EC-474
Fuel pump circuit 11232 22 3 2
Fuel pressure regulator system 334444444 4 EC-80
Fuel injector circuit 11232 22 2 EC-706
Evaporative emission system 334444444 4 EC-32
tem
Incorrect idle speed adjustment 1 1 1 1 1 EC-71
Electric throttle control actuator 112332222 2 2
Ignition circuit 11222 22 2 EC-731
33
1
4444444 41 EC-44
2
33
3
12
222 2
22
Reference
page
D
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BATTERY DEAD (UNDER CHARGE)
,
EC-715
EC-534
F
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EC-633
,
EC-645
J
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,
EC-195
EC-204
EC-215
EC-228
EC-236,
EC-246
EC-255
EC-264
EC-676
EC-221
EC-348
EC-542
EC-544
EC-661
EC-492
EC-647
EC-654
EC-668
,
,
,
,
,
,
,
,
,
,
,
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EC-91
TROUBLE DIAGNOSIS
SYMPTOM
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/ SURGING/FLAT SPOT
SPARK KNOCK/DETONATI ON
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Power steering pressure sensor circuit 2 3 3 EC-480
ECM 22333333333
Intake valve timing control solenoid valve cir-
cuit
PNP switch circuit 3 3 3 3 3 EC-497
Refrigerant pressure sensor circui t 2 3 3 4 EC-744
Electrical load signal circuit 3 EC-698
Air conditioner circuit 223333333 3 2ATC-35
VIAS control solenoid valve circuit 1 EC-617
VDC/TCS/ABS control unit 4 BRC-10
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
32 13223 3 EC-188
Reference
page
BATTERY DEAD (UNDER CHARGE)
EC-485
,
EC-489
Revision: 2005 November 2006 Q45
EC-92
TROUBLE DIAGNOSIS
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURG ING/FL AT SPOT
SPARK KNOCK/DET ONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERA T URE HIGH
EXCESSIVE FUEL CONSUMPTION
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
Fuel piping 5 5 5 5 5 5 FL-2
Vapor lock —
Valve deposit
Poor fuel (Heavy weight gaso-
line, Low octane)
Air Air duct
Air cleaner EM-17
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)
Electric throttle control actuator EM-19
Cranking Battery
Engine Cylinder head
Valve
mechanism
Air leakage from intake manifold/
Collector/Gasket
Generator circuit SC-16
Star ter circuit 3 SC-9
Signal plate 6 EM-83
PNP switch 4 AT-107
Cylinder head gasket 4 3
Cylinder block
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Timing chain
Camshaft EM-50
Intake valve timing control EM-39
Intake valve
Exhaust valve
5
5
5 555 55 5
55555 5
5555
111111
1
55555 55 5 EM-67
66666 66 6
55555 55 5
Reference
page
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
FL-8
EM-17
EM-17
EM-19
SC-4
1
4
EM-83
EM-39
3 EM-67
—
—
A
EC
C
D
E
F
G
H
I
J
K
L
M
Revision: 2005 November 2006 Q45
EC-93
TROUBLE DIAGNOSIS
SYMPTOM
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/ SURGING/FLAT SPOT
SPARK KNOCK/DETONATI ON
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
Three way catalyst
Lubrication
Cooling
IVIS (INFINITI Vehicle Immobilizer System —
NATS)
1 - 6: The numbers refer to the order of inspection.
Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
Oil level (Low)/Filthy oil LU-6
Radiator/Hose/Radiator filler cap
Thermostat 5 CO-22
Water pump CO-20
Water gallery CO-6
Cooling fan 5 CO-18
Coolant level (Low)/Contami-
nated coolant
55555 55 5
55555 55 5
55555 55 45
11
Reference
page
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
EM-23
3
EM-26
10 , LU-9
CO-11
CO-14
CO-8
EC-46
BL-200
, EX-
, LU-
,
or
Revision: 2005 November 2006 Q45
EC-94
TROUBLE DIAGNOSIS
Engine Control Component Parts Location NBS001R3
A
EC
C
D
E
F
G
H
I
J
K
L
M
PBIB3128E
Revision: 2005 November 2006 Q45
EC-95
TROUBLE DIAGNOSIS
PBIB2412E
Revision: 2005 November 2006 Q45
EC-96
TROUBLE DIAGNOSIS
A
EC
C
D
E
F
G
H
I
J
K
L
M
PBIB2413E
Revision: 2005 November 2006 Q45
EC-97
TROUBLE DIAGNOSIS
PBIB3132E
Revision: 2005 November 2006 Q45
EC-98
TROUBLE DIAGNOSIS
A
EC
C
D
E
F
PBIB2710E
G
PBIB3133E
H
I
J
K
L
M
Revision: 2005 November 2006 Q45
EC-99
TROUBLE DIAGNOSIS
PBIB2415E
Revision: 2005 November 2006 Q45
EC-100
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