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ENGINE CONTROL SYSTEM
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CONTENTS
TROUBLE DIAGNOSIS - INDEX ....................................8
Alphabetical & P No. Index for DTC ...........................8
PRECAUTIONS .............................................................16
Supplemental Restraint System (SRS) ″AIR
BAG″ and ″SEAT BELT PRE-TENSIONER″.............16
Precautions for On Board Diagnostic (OBD)
System of Engine and A/T.........................................16
Engine Fuel & Emission Control System ..................17
Precautions................................................................18
Wiring Diagrams and Trouble Diagnosis...................19
PREPARATION .............................................................20
Special Service Tools................................................20
Commercial Service Tools.........................................20
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.........................................................................22
Engine Control Component Parts Location...............22
Circuit Diagram..........................................................26
System Diagram ........................................................27
Vacuum Hose Drawing..............................................28
System Chart.............................................................29
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION...............................................30
Multiport Fuel Injection (MFI) System .......................30
Electronic Ignition (EI) System ..................................32
Air Conditioning Cut Control......................................33
Fuel Cut Control (at no load & high engine
speed)........................................................................34
Evaporative Emission System...................................34
On Board Refueling Vapor Recovery (ORVR)..........40
Positive Crankcase Ventilation..................................49
BASIC SERVICE PROCEDURE...................................51
Fuel Pressure Release..............................................51
Fuel Pressure Check.................................................51
Fuel Pressure Regulator Check ................................52
Injector.......................................................................53
How to Check Idle Speed and Ignition Timing..........54
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment.................................................................55
Idle Air Volume Learning ...........................................70
SECTION
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................72
Introduction................................................................72
Two Trip Detection Logic...........................................72
Emission-related Diagnostic Information...................73
Malfunction Indicator Lamp (MIL)..............................88
OBD System Operation Chart...................................92
CONSULT-II...............................................................97
Generic Scan Tool (GST)........................................111
TROUBLE DIAGNOSIS - INTRODUCTION................113
Introduction..............................................................113
Work Flow................................................................115
TROUBLE DIAGNOSIS - BASIC INSPECTION.........117
Basic Inspection.......................................................117
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................130
DTC Inspection Priority Chart..................................130
Fail-safe Chart .........................................................131
Symptom Matrix Chart.............................................132
CONSULT-II Reference Value in Data Monitor
Mode........................................................................136
Major Sensor Reference Graph in Data Monitor
Mode........................................................................138
ECM Terminals and Reference Value.....................141
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..150
Description...............................................................150
Testing Condition.....................................................150
Inspection Procedure...............................................150
Diagnostic Procedure ..............................................151
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................154
Description...............................................................154
Diagnostic Procedure ..............................................154
TROUBLE DIAGNOSIS FOR POWER SUPPLY........155
ECM Terminals and Reference Value.....................155
Main Power Supply and Ground Circuit..................156
DTC P0011, P0021 IVT CONTROL ............................164
Description...............................................................164
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CONTENTS (Cont’d)
CONSULT-II Reference Value in Data Monitor
Mode........................................................................165
ECM Terminals and Reference Value.....................166
On Board Diagnosis Logic.......................................167
DTC Confirmation Procedure..................................167
DTC P0031, P0032, P0051, P0052 HO2S1
HEATER.......................................................................169
Description...............................................................169
CONSULT-II Reference Value in Data Monitor
Mode........................................................................169
ECM Terminals and Reference Value.....................169
On Board Diagnosis Logic.......................................169
DTC Confirmation Procedure..................................170
Wiring Diagram........................................................171
Diagnostic Procedure ..............................................173
DTC P0037, P0038, P0057, P0058 HO2S2
HEATER.......................................................................176
Description...............................................................176
CONSULT-II Reference Value in Data Monitor
Mode........................................................................176
ECM Terminals and Reference Value.....................176
On Board Diagnosis Logic.......................................177
DTC Confirmation Procedure..................................177
Wiring Diagram........................................................179
Diagnostic Procedure ..............................................181
DTC P0101 MAF SENSOR .........................................184
Component Description ...........................................184
CONSULT-II Reference Value in Data Monitor
Mode........................................................................184
ECM Terminals and Reference Value.....................184
On Board Diagnosis Logic.......................................185
DTC Confirmation Procedure..................................185
Overall Function Check...........................................186
Wiring Diagram........................................................187
Diagnostic Procedure ..............................................188
DTC P0102, P0103 MAF SENSOR.............................191
Component Description ...........................................191
CONSULT-II Reference Value in Data Monitor
Mode........................................................................191
ECM Terminals and Reference Value.....................191
On Board Diagnosis Logic.......................................192
DTC Confirmation Procedure..................................192
Wiring Diagram........................................................193
Diagnostic Procedure ..............................................194
DTC P0107, P0108 ABSOLUTE PRESSURE
SENSOR ......................................................................197
Component Description ...........................................197
On Board Diagnosis Logic.......................................197
DTC Confirmation Procedure..................................197
Diagnostic Procedure ..............................................198
DTC P0112, P0113 IAT SENSOR ...............................199
Component Description ...........................................199
On Board Diagnosis Logic.......................................199
DTC Confirmation Procedure..................................199
Wiring Diagram........................................................200
Diagnostic Procedure ..............................................201
DTC P0117, P0118 ECT SENSOR..............................203
Component Description ...........................................203
On Board Diagnosis Logic.......................................203
DTC Confirmation Procedure..................................204
Wiring Diagram........................................................205
Diagnostic Procedure ..............................................206
DTC P0121 TP SENSOR ............................................208
Description...............................................................208
CONSULT-II Reference Value in Data Monitor
Mode........................................................................208
ECM Terminals and Reference Value.....................209
On Board Diagnosis Logic.......................................209
DTC Confirmation Procedure..................................210
Wiring Diagram........................................................213
Diagnostic Procedure ..............................................214
DTC P0122, P0123 TP SENSOR................................219
Description...............................................................219
CONSULT-II Reference Value in Data Monitor
Mode........................................................................219
ECM Terminals and Reference Value.....................220
On Board Diagnosis Logic.......................................220
DTC Confirmation Procedure..................................220
Wiring Diagram........................................................222
Diagnostic Procedure ..............................................223
DTC P0125 ECT SENSOR..........................................227
Description...............................................................227
On Board Diagnosis Logic.......................................227
DTC Confirmation Procedure..................................228
Diagnostic Procedure ..............................................228
DTC P0127 IAT SENSOR ...........................................230
Component Description ...........................................230
On Board Diagnosis Logic.......................................230
DTC Confirmation Procedure..................................230
Diagnostic Procedure ..............................................231
DTC P0132, P0152 HO2S1.........................................232
Component Description ...........................................232
CONSULT-II Reference Value in Data Monitor
Mode........................................................................232
ECM Terminals and Reference Value.....................232
On Board Diagnosis Logic.......................................233
DTC Confirmation Procedure..................................233
Wiring Diagram........................................................235
Diagnostic Procedure ..............................................237
DTC P0133, P0153 HO2S1.........................................241
Component Description ...........................................241
CONSULT-II Reference Value in Data Monitor
Mode........................................................................241
ECM Terminals and Reference Value.....................241
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On Board Diagnosis Logic.......................................242
DTC Confirmation Procedure..................................243
Overall Function Check...........................................244
Wiring Diagram........................................................245
Diagnostic Procedure ..............................................247
DTC P0134, P0154 HO2S1.........................................254
Component Description ...........................................254
CONSULT-II Reference Value in Data Monitor
Mode........................................................................254
ECM Terminals and Reference Value.....................254
On Board Diagnosis Logic.......................................255
DTC Confirmation Procedure..................................256
Overall Function Check...........................................256
Wiring Diagram........................................................258
Diagnostic Procedure ..............................................260
DTC P0138, P0158 HO2S2.........................................264
Component Description ...........................................264
CONSULT-II Reference Value in Data Monitor
Mode........................................................................264
ECM Terminals and Reference Value.....................264
On Board Diagnosis Logic.......................................264
DTC Confirmation Procedure..................................265
Overall Function Check...........................................265
Wiring Diagram........................................................267
Diagnostic Procedure ..............................................269
DTC P0139, P0159 HO2S2.........................................273
Component Description ...........................................273
CONSULT-II Reference Value in Data Monitor
Mode........................................................................273
ECM Terminals and Reference Value.....................273
On Board Diagnosis Logic.......................................273
DTC Confirmation Procedure..................................274
Overall Function Check...........................................274
Wiring Diagram........................................................276
Diagnostic Procedure ..............................................278
DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION...................................................................283
On Board Diagnosis Logic.......................................283
DTC Confirmation Procedure..................................283
Wiring Diagram........................................................285
Diagnostic Procedure ..............................................287
DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION...................................................................291
On Board Diagnosis Logic.......................................291
DTC Confirmation Procedure..................................291
Wiring Diagram........................................................293
Diagnostic Procedure ..............................................295
DTC P0181 FTT SENSOR ..........................................298
Component Description ...........................................298
On Board Diagnosis Logic.......................................298
DTC Confirmation Procedure..................................298
Diagnostic Procedure ..............................................299
DTC P0182, P0183 FTT SENSOR..............................301
Component Description ...........................................301
On Board Diagnosis Logic.......................................301
DTC Confirmation Procedure..................................301
Wiring Diagram........................................................303
Diagnostic Procedure ..............................................304
DTC P0217 COOLANT OVERTEMPERATURE
ENRICHMENT PROTECTION.....................................306
On Board Diagnosis Logic.......................................306
Overall Function Check...........................................306
Diagnostic Procedure ..............................................308
Main 12 Causes of Overheating..............................311
DTC P0300 - P0306 MULTIPLE CYLINDER
MISFIRE, NO.1-6CYLINDER MISFIRE..................312
On Board Diagnosis Logic.......................................312
DTC Confirmation Procedure..................................313
Diagnostic Procedure ..............................................313
DTC P0327, P0328 KS................................................320
Component Description ...........................................320
ECM Terminals and Reference Value.....................320
On Board Diagnosis Logic.......................................320
DTC Confirmation Procedure..................................320
Wiring Diagram........................................................321
Diagnostic Procedure ..............................................322
DTC P0335 CKP SENSOR (POS)..............................325
Component Description ...........................................325
CONSULT-II Reference Value in Data Monitor
Mode........................................................................325
ECM Terminals and Reference Value.....................326
On Board Diagnosis Logic.......................................326
DTC Confirmation Procedure..................................327
Wiring Diagram........................................................328
Diagnostic Procedure ..............................................329
DTC P0340 CMP SENSOR.........................................333
Component Description ...........................................333
ECM Terminals and Reference Value.....................333
On Board Diagnosis Logic.......................................333
DTC Confirmation Procedure..................................334
Wiring Diagram........................................................335
Diagnostic Procedure ..............................................336
DTC P0420, P0430 THREE WAY CATALYST
FUNCTION...................................................................338
On Board Diagnosis Logic.......................................338
DTC Confirmation Procedure..................................338
Overall Function Check...........................................339
Diagnostic Procedure ..............................................339
DTC P0441 EVAP CONTROL SYSTEM.....................343
System Description..................................................343
On Board Diagnosis Logic.......................................343
DTC Confirmation Procedure..................................344
Overall Function Check...........................................344
Diagnostic Procedure ..............................................346
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DTC P0442 EVAP CONTROL SYSTEM.....................354
On Board Diagnosis Logic.......................................354
DTC Confirmation Procedure..................................356
Diagnostic Procedure ..............................................357
DTC P0444, P0445 EVAP CANISTER PURGE
VOLUME CONTROL SOLENOID VALVE ..................370
Description...............................................................370
CONSULT-II Reference Value in Data Monitor
Mode........................................................................370
ECM Terminals and Reference Value.....................371
On Board Diagnosis Logic.......................................371
DTC Confirmation Procedure..................................372
Wiring Diagram........................................................373
Diagnostic Procedure ..............................................374
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE..........................................................................377
Component Description ...........................................377
CONSULT-II Reference Value in Data Monitor
Mode........................................................................377
ECM Terminals and Reference Value.....................377
On Board Diagnosis Logic.......................................377
DTC Confirmation Procedure..................................378
Wiring Diagram........................................................379
Diagnostic Procedure ..............................................380
DTC P0452 EVAP SYSTEM PRESSURE SENSOR ..384
Component Description ...........................................384
CONSULT-II Reference Value in Data Monitor
Mode........................................................................384
ECM Terminals and Reference Value.....................384
On Board Diagnosis Logic.......................................384
DTC Confirmation Procedure..................................385
Wiring Diagram........................................................386
Diagnostic Procedure ..............................................387
DTC P0453 EVAP SYSTEM PRESSURE SENSOR ..390
Component Description ...........................................390
CONSULT-II Reference Value in Data Monitor
Mode........................................................................390
ECM Terminals and Reference Value.....................390
On Board Diagnosis Logic.......................................391
DTC Confirmation Procedure..................................391
Wiring Diagram........................................................392
Diagnostic Procedure ..............................................393
DTC P0455 EVAP CONTROL SYSTEM.....................399
On Board Diagnosis Logic.......................................399
DTC Confirmation Procedure..................................400
Diagnostic Procedure ..............................................401
DTC P0456 EVAP CONTROL SYSTEM.....................412
On Board Diagnosis Logic.......................................412
DTC Confirmation Procedure..................................414
Overall Function Check...........................................415
Diagnostic Procedure ..............................................415
DTC P0460 FUEL LEVEL SENSOR...........................428
Component Description ...........................................428
On Board Diagnostic Logic......................................428
DTC Confirmation Procedure..................................428
Wiring Diagram........................................................429
Diagnostic Procedure ..............................................430
DTC P0461 FUEL LEVEL SENSOR...........................432
Component Description ...........................................432
On Board Diagnostic Logic......................................432
Overall Function Check...........................................432
DTC P0462, P0463 FUEL LEVEL SENSOR ..............434
Component Description ...........................................434
On Board Diagnostic Logic......................................434
DTC Confirmation Procedure..................................434
Wiring Diagram........................................................435
Diagnostic Procedure ..............................................436
DTC P0500 VSS..........................................................438
Component Description ...........................................438
ECM Terminals and Reference Value.....................438
On Board Diagnosis Logic.......................................438
DTC Confirmation Procedure..................................439
Overall Function Check...........................................439
Wiring Diagram........................................................441
Diagnostic Procedure ..............................................442
DTC P0505 ISC SYSTEM ...........................................443
Description...............................................................443
CONSULT-II Reference Value in Data Monitor
Mode........................................................................444
ECM Terminals and Reference Value.....................444
On Board Diagnosis Logic.......................................444
DTC Confirmation Procedure..................................444
Wiring Diagram........................................................446
Diagnostic Procedure ..............................................447
DTC P0506 ISC SYSTEM ...........................................450
Description...............................................................450
CONSULT-II Reference Value in Data Monitor
Mode........................................................................451
ECM Terminals and Reference Value.....................451
On Board Diagnosis Logic.......................................451
DTC Confirmation Procedure..................................451
Wiring Diagram........................................................453
Diagnostic Procedure ..............................................454
DTC P0507 ISC SYSTEM ...........................................459
Description...............................................................459
CONSULT-II Reference Value in Data Monitor
Mode........................................................................460
ECM Terminals and Reference Value.....................460
On Board Diagnosis Logic.......................................460
DTC Confirmation Procedure..................................460
Wiring Diagram........................................................462
Diagnostic Procedure ..............................................463
DTC P0510 CTP SENSOR..........................................468
Component Description ...........................................468
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CONSULT-II Reference Value in Data Monitor
Mode........................................................................468
ECM Terminals and Reference Value.....................468
On Board Diagnosis Logic.......................................468
DTC Confirmation Procedure..................................469
Overall Function Check...........................................469
Wiring Diagram........................................................471
Diagnostic Procedure ..............................................472
DTC P0600 A/T CONTROL.........................................476
System Description..................................................476
ECM Terminals and Reference Value.....................476
On Board Diagnosis Logic.......................................476
DTC Confirmation Procedure..................................476
Wiring Diagram........................................................477
Diagnostic Procedure ..............................................478
DTC P0605 ECM .........................................................479
Component Description ...........................................479
On Board Diagnosis Logic.......................................479
DTC Confirmation Procedure..................................479
Diagnostic Procedure ..............................................480
DTC P1102 MAF SENSOR .........................................481
Component Description ...........................................481
CONSULT-II Reference Value in Data Monitor
Mode........................................................................481
ECM Terminals and Reference Value.....................481
On Board Diagnosis Logic.......................................482
DTC Confirmation Procedure..................................482
Wiring Diagram........................................................483
Diagnostic Procedure ..............................................484
DTC P1111, P1136 IVT CONTROL SOLENOID
VALVE..........................................................................487
Component Description ...........................................487
CONSULT-II Reference Value in Data Monitor
Mode........................................................................487
ECM Terminals and Reference Value.....................487
On Board Diagnosis Logic.......................................488
DTC Confirmation Procedure..................................488
Wiring Diagram........................................................489
Diagnostic Procedure ..............................................491
DTC P1130 SWIRL CONTROL VALVE CONTROL
SOLENOID VALVE......................................................493
Description...............................................................493
CONSULT-II Reference Value in Data Monitor
Mode........................................................................494
ECM Terminals and Reference Value.....................494
On Board Diagnosis Logic.......................................495
DTC Confirmation Procedure..................................495
Wiring Diagram........................................................497
Diagnostic Procedure ..............................................498
DTC P1131 SWIRL CONTROL VALVE CONTROL
SOLENOID VALVE......................................................516
Component Description ...........................................516
CONSULT-II Reference Value in Data Monitor
Mode........................................................................516
ECM Terminals and Reference Value.....................516
On Board Diagnosis Logic.......................................516
DTC Confirmation Procedure..................................517
Wiring Diagram........................................................518
Diagnostic Procedure ..............................................519
DTC P1140, P1145 INTAKE VALVE TIMING
CONTROL POSITION SENSOR.................................522
Component Description ...........................................522
CONSULT-II Reference Value in Data Monitor
Mode........................................................................522
ECM Terminals and Reference Value.....................523
On Board Diagnosis Logic.......................................523
DTC Confirmation Procedure..................................524
Wiring Diagram........................................................525
Diagnostic Procedure ..............................................527
DTC P1143, P1163 HO2S1 .........................................531
Component Description ...........................................531
CONSULT-II Reference Value in Data Monitor
Mode........................................................................531
ECM Terminals and Reference Value.....................531
On Board Diagnosis Logic.......................................532
DTC Confirmation Procedure..................................532
Overall Function Check...........................................533
Diagnostic Procedure ..............................................534
DTC P1144, P1164 HO2S1 .........................................539
Component Description ...........................................539
CONSULT-II Reference Value in Data Monitor
Mode........................................................................539
ECM Terminals and Reference Value.....................539
On Board Diagnosis Logic.......................................540
DTC Confirmation Procedure..................................540
Overall Function Check...........................................541
Diagnostic Procedure ..............................................542
DTC P1146, P1166 HO2S2 .........................................547
Component Description ...........................................547
CONSULT-II Reference Value in Data Monitor
Mode........................................................................547
ECM Terminals and Reference Value.....................547
On Board Diagnosis Logic.......................................547
DTC Confirmation Procedure..................................548
Overall Function Check...........................................548
Wiring Diagram........................................................550
Diagnostic Procedure ..............................................552
DTC P1147, P1167 HO2S2 .........................................557
Component Description ...........................................557
CONSULT-II Reference Value in Data Monitor
Mode........................................................................557
ECM Terminals and Reference Value.....................557
On Board Diagnosis Logic.......................................557
DTC Confirmation Procedure..................................558
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Overall Function Check...........................................558
Wiring Diagram........................................................560
Diagnostic Procedure ..............................................562
DTC P1148, P1168 CLOSED LOOP CONTROL........567
On Board Diagnosis Logic.......................................567
DTC Confirmation Procedure..................................567
Overall Function Check...........................................568
Diagnostic Procedure ..............................................568
DTC P1165 SWIRL CONTROL VALVE CONTROL
VACUUM CHECK SWITCH.........................................569
Component Description ...........................................569
CONSULT-II Reference Value in Data Monitor
Mode........................................................................569
ECM Terminals and Reference Value.....................569
On Board Diagnosis Logic.......................................570
DTC Confirmation Procedure..................................570
Wiring Diagram........................................................571
Diagnostic Procedure ..............................................572
DTC P1217 ENGINE OVER TEMPERATURE............575
On Board Diagnosis Logic.......................................575
Overall Function Check...........................................575
Diagnostic Procedure ..............................................576
Main 12 Causes of Overheating..............................579
DTC P1335 CKP SENSOR .........................................580
Component Description ...........................................580
CONSULT-II Reference Value in Data Monitor
Mode........................................................................580
ECM Terminals and Reference Value.....................580
On Board Diagnosis Logic.......................................581
DTC Confirmation Procedure..................................581
Wiring Diagram........................................................582
Diagnostic Procedure ..............................................583
DTC P1336 CKP SENSOR (POS)..............................586
Component Description ...........................................586
CONSULT-II Reference Value in Data Monitor
Mode........................................................................586
ECM Terminals and Reference Value.....................587
On Board Diagnosis Logic.......................................587
DTC Confirmation Procedure..................................587
Wiring Diagram........................................................588
Diagnostic Procedure ..............................................589
DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE...................................594
Description...............................................................594
CONSULT-II Reference Value in Data Monitor
Mode........................................................................594
ECM Terminals and Reference Value.....................595
On Board Diagnosis Logic.......................................595
DTC Confirmation Procedure..................................595
Wiring Diagram........................................................597
Diagnostic Procedure ..............................................598
DTC P1446 EVAP CANISTER VENT CONTROL
VALVE..........................................................................606
Component Description ...........................................606
CONSULT-II Reference Value in Data Monitor
Mode........................................................................606
ECM Terminals and Reference Value.....................606
On Board Diagnosis Logic.......................................606
DTC Confirmation Procedure..................................607
Wiring Diagram........................................................608
Diagnostic Procedure ..............................................609
DTC P1448 EVAP CANISTER VENT CONTROL
VALVE..........................................................................614
Component Description ...........................................614
CONSULT-II Reference Value in Data Monitor
Mode........................................................................614
ECM Terminals and Reference Value.....................614
On Board Diagnosis Logic.......................................614
DTC Confirmation Procedure..................................615
Overall Function Check...........................................616
Wiring Diagram........................................................617
Diagnostic Procedure ..............................................618
DTC P1456 EVAP CONTROL SYSTEM.....................623
On Board Diagnosis Logic.......................................623
DTC Confirmation Procedure..................................625
Overall Function Check...........................................626
Diagnostic Procedure ..............................................626
DTC P1464 FUEL LEVEL SENSOR...........................639
Component Description ...........................................639
On Board Diagnostic Logic......................................639
DTC Confirmation Procedure..................................639
Wiring Diagram........................................................640
Diagnostic Procedure ..............................................641
DTC P1490 VACUUM CUT VALVE BYPASS
VALVE..........................................................................642
Description...............................................................642
CONSULT-II Reference Value in Data Monitor
Mode........................................................................642
ECM Terminals and Reference Value.....................642
On Board Diagnosis Logic.......................................643
DTC Confirmation Procedure..................................643
Wiring Diagram........................................................644
Diagnostic Procedure ..............................................645
DTC P1491 VACUUM CUT VALVE BYPASS
VALVE..........................................................................648
Description...............................................................648
CONSULT-II Reference Value in Data Monitor
Mode........................................................................648
ECM Terminals and Reference Value.....................648
On Board Diagnosis Logic.......................................649
DTC Confirmation Procedure..................................649
Overall Function Check...........................................650
Wiring Diagram........................................................651
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Diagnostic Procedure ..............................................652
DTC P1605 A/T DIAGNOSIS COMMUNICATION
LINE .............................................................................660
Component Description ...........................................660
On Board Diagnosis Logic.......................................660
DTC Confirmation Procedure..................................660
DTC P1706 PNP SWITCH...........................................661
Component Description ...........................................661
CONSULT-II Reference Value in Data Monitor
Mode........................................................................661
ECM Terminals and Reference Value.....................661
On Board Diagnosis Logic.......................................661
DTC Confirmation Procedure..................................662
Overall Function Check...........................................662
Wiring Diagram........................................................664
Diagnostic Procedure ..............................................665
VARIABLE INDUCTION AIR CONTROL SYSTEM
(VIAS)...........................................................................669
Description...............................................................669
ECM Terminals and Reference Value.....................670
Wiring Diagram........................................................671
Diagnostic Procedure ..............................................672
IGNITION SIGNAL.......................................................677
Component Description ...........................................677
ECM Terminals and Reference Value.....................677
Wiring Diagram........................................................678
Diagnostic Procedure ..............................................681
INJECTOR ...................................................................687
Component Description ...........................................687
CONSULT-II Reference Value in Data Monitor
Mode........................................................................687
ECM Terminals and Reference Value.....................687
Wiring Diagram........................................................688
Diagnostic Procedure ..............................................689
START SIGNAL...........................................................692
CONSULT-II Reference Value in Data Monitor
Mode........................................................................692
ECM Terminals and Reference Value.....................692
Wiring Diagram........................................................693
Diagnostic Procedure ..............................................694
FUEL PUMP.................................................................696
System Description..................................................696
Component Description ...........................................696
CONSULT-II Reference Value in Data Monitor
Mode........................................................................696
ECM Terminals and Reference Value.....................697
Wiring Diagram........................................................698
Diagnostic Procedure ..............................................699
POWER STEERING OIL PRESSURE SWITCH.........705
Component Description ...........................................705
CONSULT-II Reference Value in Data Monitor
Mode........................................................................705
ECM Terminals and Reference Value.....................705
Wiring Diagram........................................................706
Diagnostic Procedure ..............................................707
REFRIGERANT PRESSURE SENSOR......................710
Description...............................................................710
ECM Terminals and Reference Value.....................710
Wiring Diagram........................................................711
Diagnostic Procedure ..............................................712
ELECTRICAL LOAD SIGNAL.....................................715
ECM Terminals and Reference Value.....................715
Wiring Diagram........................................................716
Diagnostic Procedure ..............................................717
MIL & DATA LINK CONNECTORS............................720
Wiring Diagram........................................................720
SERVICE DATA AND SPECIFICATIONS (SDS).......721
Fuel Pressure Regulator..........................................721
Idle Speed and Ignition Timing................................721
Mass Air Flow Sensor..............................................721
Engine Coolant Temperature Sensor......................721
Heated Oxygen Sensor 1 Heater............................721
Fuel Pump ...............................................................721
IACV-AAC Valve......................................................721
Injector.....................................................................721
Throttle Position Sensor..........................................722
Calculated Load Value.............................................722
Intake Air Temperature Sensor................................722
Heated Oxygen Sensor 2 Heater............................722
Crankshaft Position Sensor (REF) ..........................722
Fuel Tank Temperature Sensor ...............................722
Camshaft Position Sensor (PHASE) .......................722
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Alphabetical & P No. Index for DTC
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC
ALPHABETICAL INDEX FOR DTC
Items
(CONSULT-II screen terms)
Unable to access ECM — — EC-131
A/T 1ST GR FNCTN P0731 0731 AT-120
A/T 2ND GR FNCTN P0732 0732 AT-126
A/T 3RD GR FNCTN P0733 0733 AT-132
A/T 4TH GR FNCTN P0734 0734 AT-138
A/T COMM LINE P0600 0600 EC-476
A/T DIAG COMM LINE P1605 1605 EC-660
A/T TCC S/V FNCTN P0744 0744 AT-153
ABSL PRES SEN/CIRC P0107 0107 EC-197
ABSL PRES SEN/CIRC P0108 0108 EC-197
THRTL POS SEN/CIRC*5 P0121 0121 EC-208
ATF TEMP SEN/CIRC P0710 0710 AT-105
CONSULT-II
GST*2
DTC*1
Reference page
ECM*3
NAEC0001
NAEC0001S01
CKP SEN (REF)/CIRC P1335 1335 EC-580
CKP SENSOR (COG) P1336 1336 EC-586
CKP SEN/CIRCUIT P0335 0335 EC-325
CLOSED LOOP-B1 P1148 1148 EC-567
CLOSED LOOP-B2 P1168 1168 EC-567
CLOSED TP SW/CIRC P0510 0510 EC-468
CMP SEN/CIRCUIT P0340 0340 EC-333
CYL 1 MISFIRE P0301 0301 EC-312
CYL 2 MISFIRE P0302 0302 EC-312
CYL 3 MISFIRE P0303 0303 EC-312
CYL 4 MISFIRE P0304 0304 EC-312
CYL 5 MISFIRE P0305 0305 EC-312
CYL 6 MISFIRE P0306 0306 EC-312
ECM P0605 0605 EC-479
ECT SEN/CIRC*5 P0117 0117 EC-203
ECT SEN/CIRC*5 P0118 0118 EC-203
ECT SENSOR*5 P0125 0125 EC-227
ENG OVER TEMP P0217 0217 EC-306
ENG OVER TEMP P1217 1217 EC-575
ENGINE SPEED SIG P0725 0725 AT-116
EVAP VERY SML LEAK P0456 0456 EC-412
EVAP VERY SML LEAK P1456 1456 EC-623
EC-8
Page 9
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
Items
(CONSULT-II screen terms)
EVAP GROSS LEAK P0455 0455 EC-399
EVAP PURG FLOW/MON P0441 0441 EC-343
EVAP SMALL LEAK P0442 0442 EC-354
EVAP SYS PRES SEN P0452 0452 EC-384
EVAP SYS PRES SEN P0453 0453 EC-390
FTT SEN/CIRCUIT P0182 0182 EC-301
FTT SEN/CIRCUIT P0183 0183 EC-301
FTT SENSOR P0181 0181 EC-298
FUEL LEV SEN SLOSH P0460 0460 EC-428
FUEL LEVEL SENSOR P0461 0461 EC-432
FUEL LEVL SEN/CIRC P0462 0462 EC-434
FUEL LEVL SEN/CIRC P0463 0463 EC-434
FUEL LEVL SEN/CIRC P1464 1464 EC-639
FUEL SYS-LEAN-B1 P0171 0171 EC-283
CONSULT-II
GST*2
DTC*1
Reference page
ECM*3
GI
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FUEL SYS-LEAN-B2 P0174 0174 EC-283
FUEL SYS-RICH-B1 P0172 0172 EC-291
FUEL SYS-RICH-B2 P0175 0175 EC-291
HO2S1 (B1) P0132 0132 EC-232
HO2S1 (B1) P0133 0133 EC-241
HO2S1 (B1) P0134 0134 EC-254
HO2S1 (B1) P1143 1143 EC-531
HO2S1 (B1) P1144 1144 EC-539
HO2S1 (B2) P0152 0152 EC-232
HO2S1 (B2) P0153 0153 EC-241
HO2S1 (B2) P0154 0154 EC-254
HO2S1 (B2) P1163 1163 EC-531
HO2S1 (B2) P1164 1164 EC-539
HO2S1 HTR (B1) P0031 0031 EC-169
HO2S1 HTR (B1) P0032 0032 EC-169
HO2S1 HTR (B2) P0051 0051 EC-169
HO2S1 HTR (B2) P0052 0052 EC-169
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HO2S2 (B1) P0138 0138 EC-264
HO2S2 (B1) P0139 0139 EC-273
HO2S2 (B1) P1146 1146 EC-547
HO2S2 (B1) P1147 1147 EC-557
HO2S2 (B2) P0158 0158 EC-264
EC-9
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Page 10
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
Items
(CONSULT-II screen terms)
HO2S2 (B2) P0159 0159 EC-273
HO2S2 (B2) P1166 1166 EC-547
HO2S2 (B2) P1167 1167 EC-557
HO2S2 HTR (B1) P0037 0037 EC-176
HO2S2 HTR (B1) P0038 0038 EC-176
HO2S2 HTR (B2) P0057 0057 EC-176
HO2S2 HTR (B2) P0058 0058 EC-176
IAT SEN/CIRCUIT*6 P0112 0112 EC-199
IAT SEN/CIRCUIT*6 P0113 0113 EC-199
IAT SENSOR P0127 0127 EC-230
INT/V TIM CONT-B1 P0011 0011 EC-164
INT/V TIM CONT-B2 P0021 0021 EC-164
INT/V TIM V/CIR-B1 P1111 1111 EC-487
INT/V TIM V/CIR-B2 P1136 1136 EC-487
CONSULT-II
GST*2
DTC*1
Reference page
ECM*3
INTK TIM S/CIRC-B1 P1140 1140 EC-522
INTK TIM S/CIRC-B2 P1145 1145 EC-522
ISC SYSTEM P0506 0506 EC-450
ISC SYSTEM P0507 0507 EC-459
ISC SYSTEM/CIRC P0505 0505 EC-443
KNOCK SEN/CIRC-B1 P0328*2 0328 EC-320
KNOCK SEN/CIRC-B1 P0327*2 0327 EC-320
L/PRESS SOL/CIRC P0745 0745 AT-162
MAF SEN/CIRCUIT*5 P0101 0101 EC-184
MAF SEN/CIRCUIT*5 P0102 0102 EC-191
MAF SEN/CIRCUIT*5 P0103 0103 EC-191
MAF SENSOR*5 P1102 1102 EC-481
MULTI CYL MISFIRE P0300 0300 EC-312
NATS MALFUNCTION P1610-P1615 1610-1615 EL-385
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
No DTC Flashing*4 EC-89
P0000 0000 —
O/R CLTCH SOL/CIRC P1760 1760 AT-185
P-N POS SW/CIRCUIT P1706 1706 EC-661
PNP SW/CIRC P0705 0705 AT-99
PURG VOLUME CONT/V P0444 0444 EC-370
EC-10
Page 11
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
Items
(CONSULT-II screen terms)
PURG VOLUME CONT/V P0445 0445 EC-370
PURG VOLUME CONT/V P1444 1444 EC-594
SFT SOL A/CIRC*5 P0750 0750 AT-168
SFT SOL B/CIRC*5 P0755 0755 AT-172
SWIRL CONT SOL/V P1130 1130 EC-493
SWIRL CONT SOL/V P1131 1131 EC-516
SWL CON VC SW/CIRC P1165 1165 EC-569
TCC SOLENOID/CIRC P0740 0740 AT-148
TP SEN/CIRC A/T*5 P1705 1705 AT-176
TP SEN/CIRCUIT*5 P0122 0122 EC-219
TP SEN/CIRCUIT*5 P0123 0123 EC-219
TW CATALYST SYS-B1 P0420 0420 EC-338
TW CATALYST SYS-B2 P0430 0430 EC-338
VC/V BYPASS/V P1490 1490 EC-642
CONSULT-II
GST*2
DTC*1
Reference page
ECM*3
GI
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LC
FE
CL
MT
AT
VC CUT/V BYPASS/V P1491 1491 EC-648
VEH SPD SEN/CIR AT*6 P0720 0720 AT-111
VEH SPEED SEN/CIRC*6 P0500 0500 EC-438
VENT CONTROL VALVE P0447 0447 EC-377
VENT CONTROL VALVE P1446 1446 EC-606
VENT CONTROL VALVE P1448 1448 EC-614
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: When engine is running.
*5: When the fail-safe operation occurs, the MIL illuminates.
*6: When fail-safe operations for both self-diagnoses occur at the same time, the MIL illuminates.
NOTE:
I Regarding R50 models, “-B1” indicates bank 1 and “-B2” indicates left bank 2.
I Bank 1 (-B1) includes No. 1 cylinder.
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EC-11
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Page 12
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
P NO. INDEX FOR DTC
DTC*1
CONSULT-II
GST*2
— — Unable to access ECM EC-131
No DTC Flashing*4
P0000 0000
P0011 0011 INT/V TIM CONT-B1 EC-164
P0021 0021 INT/V TIM CONT-B2 EC-164
P0031 0031 HO2S1 HTR (B1) EC-169
P0032 0032 HO2S1 HTR (B1) EC-169
P0037 0037 HO2S2 HTR (B1) EC-176
P0038 0038 HO2S2 HTR (B1) EC-176
P0051 0051 HO2S1 HTR (B2) EC-169
P0052 0052 HO2S1 HTR (B2) EC-169
ECM*3
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
(CONSULT-II screen terms)
Items
=NAEC0001S02
Reference page
EC-89
—
P0057 0057 HO2S2 HTR (B2) EC-176
P0058 0058 HO2S2 HTR (B2) EC-176
P0101 0101 MAF SEN/CIRCUIT*5 EC-184
P0102 0102 MAF SEN/CIRCUIT*5 EC-191
P0103 0103 MAF SEN/CIRCUIT*5 EC-191
P0107 0107 ABSL PRES SEN/CIRC EC-197
P0108 0108 ABSL PRES SEN/CIRC EC-197
P0112 0112 IAT SEN/CIRCUIT*6 EC-199
P0113 0113 IAT SEN/CIRCUIT*6 EC-199
P0117 0117 ECT SEN/CIRC*5 EC-203
P0118 0118 ECT SEN/CIRC*5 EC-203
P0121 0121 THRTL POS SEN/CIRC*5 EC-208
P0122 0122 TP SEN/CIRCUIT*5 EC-219
P0123 0123 TP SEN/CIRCUIT*5 EC-219
P0125 0125 ECT SENSOR*5 EC-227
P0127 0127 IAT SENSOR EC-230
P0132 0132 HO2S1 (B1) EC-232
P0133 0133 HO2S1 (B1) EC-241
P0134 0134 HO2S1 (B1) EC-254
P0138 0138 HO2S2 (B1) EC-264
P0139 0139 HO2S2 (B1) EC-273
P0152 0152 HO2S1 (B2) EC-232
EC-12
Page 13
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
DTC*1
CONSULT-II
GST*2
P0153 0153 HO2S1 (B2) EC-241
P0154 0154 HO2S1 (B2) EC-254
P0158 0158 HO2S2 (B2) EC-264
P0159 0159 HO2S2 (B2) EC-273
P0171 0171 FUEL SYS-LEAN-B1 EC-283
P0172 0172 FUEL SYS-RICH-B1 EC-291
P0174 0174 FUEL SYS-LEAN-B2 EC-283
P0175 0175 FUEL SYS-RICH-B2 EC-291
P0181 0181 FTT SENSOR EC-298
P0182 0182 FTT SEN/CIRCUIT EC-301
P0183 0183 FTT SEN/CIRCUIT EC-301
P0217 0217 ENG OVER TEMP EC-306
P0300 0300 MULTI CYL MISFIRE EC-312
P0301 0301 CYL 1 MISFIRE EC-312
ECM*3
(CONSULT-II screen terms)
Items
Reference page
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P0302 0302 CYL 2 MISFIRE EC-312
P0303 0303 CYL 3 MISFIRE EC-312
P0304 0304 CYL 4 MISFIRE EC-312
P0305 0305 CYL 5 MISFIRE EC-312
P0306 0306 CYL 6 MISFIRE EC-312
P0327 0327 KNOCK SEN/CIRC-B1 EC-320
P0328 0328 KNOCK SEN/CIRC-B1 EC-320
P0335 0335 CKP SEN/CIRCUIT EC-325
P0340 0340 CMP SEN/CIRCUIT EC-333
P0420 0420 TW CATALYST SYS-B1 EC-338
P0430 0430 TW CATALYST SYS-B2 EC-338
P0441 0441 EVAP PURG FLOW/MON EC-343
P0442 0442 EVAP SMALL LEAK EC-354
P0444 0444 PURG VOLUME CONT/V EC-370
P0445 0445 PURG VOLUME CONT/V EC-370
P0447 0447 VENT CONTROL VALVE EC-377
P0452 0452 EVAP SYS PRES SEN EC-384
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P0453 0453 EVAP SYS PRES SEN EC-390
P0455 0455 EVAP GROSS LEAK EC-399
P0456 0456 EVAP VERY SML LEAK EC-412
P0460 0460 FUEL LEV SEN SLOSH EC-428
P0461 0461 FUEL LEVEL SENSOR EC-432
EC-13
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Page 14
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
DTC*1
CONSULT-II
GST*2
P0462 0462 FUEL LEVL SEN/CIRC EC-434
P0463 0463 FUEL LEVL SEN/CIRC EC-434
P0500 0500 VEH SPEED SEN/CIRC*6 EC-438
P0505 0505 ISC SYSTEM/CIRC EC-443
P0506 0506 ISC SYSTEM EC-450
P0507 0507 ISC SYSTEM EC-459
P0510 0510 CLOSED TP SW/CIRC EC-468
P0600*2 0600 A/T COMM LINE EC-476
P0605 0605 ECM EC-479
P0705 0705 PNP SW/CIRC AT-99
P0710 0710 ATF TEMP SEN/CIRC AT-105
P0720 0720 VEH SPD SEN/CIR AT*4 AT-111
P0725 0725 ENGINE SPEED SIG AT-116
P0731 0731 A/T 1ST GR FNCTN AT-120
ECM*3
(CONSULT-II screen terms)
Items
Reference page
P0732 0732 A/T 2ND GR FNCTN AT-126
P0733 0733 A/T 3RD GR FNCTN AT-132
P0734 0734 A/T 4TH GR FNCTN AT-138
P0740 0740 TCC SOLENOID/CIRC AT-148
P0744 0744 A/T TCC S/V FNCTN AT-153
P0745 0745 L/PRESS SOL/CIRC AT-162
P0750 0750 SFT SOL A/CIRC*3 AT-168
P0755 0755 SFT SOL B/CIRC*3 AT-172
P1102 1102 MAF SENSOR*3 EC-481
P1111 1111 INT/V TIM V/CIR-B1 EC-487
P1130 1130 SWIRL CONT SOL/V EC-493
P1131 1131 SWIRL CONT SOL/V EC-516
P1136 1136 INT/V TIM V/CIR-B2 EC-487
P1140 1140 INTK TIM S/CIRC-B1 EC-522
P1143 1143 HO2S1 (B1) EC-531
P1144 1144 HO2S1 (B1) EC-539
P1145 1145 INTK TIM S/CIRC-B2 EC-522
P1146 1146 HO2S2 (B1) EC-547
P1147 1147 HO2S2 (B1) EC-557
P1148 1148 CLOSED LOOP-B1 EC-567
P1163 1163 HO2S1 (B2) EC-531
P1164 1164 HO2S1 (B2) EC-539
EC-14
Page 15
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
DTC*1
CONSULT-II
GST*2
P1165 1165 SWL CON VC SW/CIRC EC-569
P1166 1166 HO2S2 (B2) EC-547
P1167 1167 HO2S2 (B2) EC-557
P1168 1168 CLOSED LOOP-B2 EC-567
P1217 1217 ENG OVER TEMP EC-575
P1335 1335 CKP SEN (REF)/CIRC EC-580
P1336 1336 CKP SENSOR (COG) EC-586
P1444 1444 PURG VOLUME CONT/V EC-594
P1446 1446 VENT CONTROL VALVE EC-606
P1448 1448 VENT CONTROL VALVE EC-614
P1456 1456 EVAP VERY SML LEAK EC-623
P1464 1464 FUEL LEVL SEN/CIRC EC-639
P1490 1490 VC/V BYPASS/V EC-642
P1491 1491 VC CUT/V BYPASS/V EC-648
ECM*3
(CONSULT-II screen terms)
Items
Reference page
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P1605 1605 A/T DIAG COMM LINE EC-660
P1610-P1615 1610-1615 NATS MALFUNCTION EL-385
P1705 1705 TP SEN/CIRC A/T*3 AT-176
P1706 1706 P-N POS SW/CIRCUIT EC-661
P1760 1760 O/R CLTCH SOL/CIRC AT-185
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: When engine is running.
*5: When the fail-safe operation occurs, the MIL illuminates.
*6: When fail-safe operations for both self-diagnoses occur at the same time, the MIL illuminates.
NOTE:
I Regarding R50 models, “-B1” indicates right bank 1 and “-B2” indicates bank 2.
I Bank 1 (-B1) includes No. 1 cylinder.
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EC-15
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Page 16
PRECAUTIONS
Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
Supplemental Restraint System (SRS) “AIR
BAG” and “SEAT BELT PRE-TENSIONER”
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL R50 is as follows:
I For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steering wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt
pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
I For a side collision
The Supplemental Restraint System consists of side air bag module (located in the outer side of front seat),
satellite sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring harness,
warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
I To avoid rendering the SRS inoperative, which could increase the risk of personal 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 dealer.
I Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, refer to RS section.
I Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow harness connector (and by yellow harness protector or yellow insulation tape before the harness connectors).
NAEC0002
Precautions for On Board Diagnostic (OBD) System of Engine and A/T
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
I Be sure to turn the ignition switch OFF and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc.
will cause the MIL to light up.
I 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.)
I 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 EL-6, “HARNESS
CONNECTOR (SLIDE-LOCKING TYPE)”.
I 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.
I Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the fuel injection system, etc.
I 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.
NAEC0003
EC-16
Page 17
PRECAUTIONS
Engine Fuel & Emission Control System
Engine Fuel & Emission Control System
NAEC0004
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EC-17
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SEF952RK
IDX
Page 18
Precautions
PRECAUTIONS
SEF289H
SEF908W
Precautions
NAEC0005
I Before connecting or disconnecting the ECM harness
connector, turn ignition switch OFF and disconnect negative battery terminal. Failure to do so may damage the
ECM because battery voltage is applied to ECM even if
ignition switch is turned off.
I When connecting ECM harness connector, fasten it
securely with a lever as far as it will go as shown at left.
I When connecting or disconnecting 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.
SEF291H
MEF040D
SEF217U
I Before replacing ECM, perform “ECM Terminals and Ref-
erence Value” inspection and make sure ECM functions
properly. Refer to EC-141.
I 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 “Overall
Function Check” should be a good result if the repair is
completed.
EC-18
Page 19
PRECAUTIONS
Precautions (Cont’d)
SEF348N
I When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
I Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the
ECM’s transistor. Use a ground other than the ECM
terminals, such as the ground.
I Regarding model R50, “-B1” indicates the right bank and
“-B2” indicates the left bank as shown in the figure.
I Bank 1 includes No. 1 cylinder.
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SEF099WB
Wiring Diagrams and Trouble Diagnosis
When you read Wiring diagrams, refer to the following:
I GI-11, “HOW TO READ WIRING DIAGRAMS”
I EL-9, “POWER SUPPLY ROUTING” for power distribution circuit
When you perform trouble diagnosis, refer to the following:
I GI-35, “HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES”
I GI-24, “HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT”
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EC-19
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Page 20
Special Service Tools
PREPARATION
Special Service Tools
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
KV10117100
(J36471-A)
Heated oxygen sensor
wrench
(J44321)
Fuel pressure gauge kit
Description
Loosening or tightening heated oxygen sensor
(bank 1)/(bank 2) with 22 mm (0.87 in) hexagon
nut
NT379
Checking fuel pressure with pressure gauge
LEC642
Commercial Service Tools
Tool name
(Kent-Moore No.)
Description
NAEC0007
NAEC0008
Fuel filler cap adapter
i.e.: (MLR-8382)
Leak detector
i.e.: (J41416)
EVAP service port
adapter
i.e.: (J41413-OBD)
Checking fuel tank vacuum relief valve opening
pressure
NT815
Locating the EVAP leak
NT703
Applying positive pressure through EVAP service
port
NT704
EC-20
Page 21
PREPARATION
Commercial Service Tools (Cont’d)
Tool name
(Kent-Moore No.)
Socket wrench
Oxygen sensor thread
cleaner
i.e.: (J-43897-18)
(J-43897-12)
Anti-seize lubricant
i.e.: (Permatex
or equivalent meeting
MIL specification MIL-A-
907)
TM
133AR
Description
NT705
AEM488
Removing and installing engine coolant temperature sensor
Reconditioning the exhaust system threads before
installing a new oxygen sensor. Use with antiseize 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
Lubricating oxygen sensor thread cleaning tool
when reconditioning exhaust system threads.
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NT779
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EC-21
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Page 22
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Engine Control Component Parts Location
Engine Control Component Parts Location
NAEC0009
EC-22
SEF952ZA
Page 23
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Engine Control Component Parts Location (Cont’d)
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EC-23
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SEF034ZA
IDX
Page 24
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Engine Control Component Parts Location (Cont’d)
EC-24
SEF584ZA
Page 25
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Engine Control Component Parts Location (Cont’d)
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Circuit Diagram
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Circuit Diagram
NAEC0010
EC-26
MEC668D
Page 27
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
System Diagram
System Diagram
NAEC0011
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ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Vacuum Hose Drawing
Vacuum Hose Drawing
Refer to “System Diagram”, EC-27 for Vacuum Control System.
NAEC0012
EC-28
SEF953Z
Page 29
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
System Chart
Input (Sensor) ECM Function Output (Actuator)
I Camshaft position sensor (PHASE)
I Crankshaft position sensor (REF)
I Mass air flow sensor
I Engine coolant temperature sensor
I Heated oxygen sensor 1
I Ignition switch
I Throttle position sensor
I Closed throttle position switch *3
I Park/neutral position (PNP) switch
I Air conditioner switch
I Knock sensor
I Intake air temperature sensor
I Absolute pressure sensor
I EVAP control system pressure sensor *1
I Battery voltage
I Power steering oil pressure switch
I Vehicle speed sensor
I Fuel tank temperature sensor *1
I Crankshaft position sensor (POS)
I Heated oxygen sensor 2*2
I TCM (Transmission control module)
I Refrigerant pressure sensor
I Electrical load
I Fuel level sensor*1
System Chart
Fuel injection & mixture ratio control Injectors
Electronic ignition system Power transistor
Idle air control system IACV-AAC valve
Fuel pump control Fuel pump relay
On board diagnostic system MIL (On the instrument panel)
Swirl control valve control
Power valve control VIAS control solenoid valve
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow control
Air conditioning cut control Air conditioner relay
ON BOARD DIAGNOSIS for EVAP system
Swirl control valve control solenoid
valve
EVAP canister purge volume control solenoid valve
I EVAP canister vent control valve
I Vacuum cut valve bypass valve
NAEC0013
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*1: These sensors are not used to control the engine system. They are used only for the on board diagnosis.
*2: This sensor is not used to control the engine system under normal conditions.
*3: This switch will operate in place of the throttle position sensor to control EVAP parts if the sensor malfunctions.
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Multiport Fuel Injection (MFI) System
Multiport Fuel Injection (MFI) System
DESCRIPTION
Input/Output Signal Chart
Sensor Input Signal to ECM
Crankshaft position sensor (POS) Engine speed (POS signal)
Crankshaft position sensor (REF) Engine speed (REF signal)
Camshaft position sensor (PHASE) Piston position
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
ECM func-
tion
NAEC0014
NAEC0014S01
Actuator
Throttle position sensor
Park/neutral position (PNP) switch Gear position
Vehicle speed sensor Vehicle speed
Ignition switch Start signal
Air conditioner switch Air conditioner operation
Knock sensor Engine knocking condition
Battery Battery voltage
Absolute pressure sensor Ambient air barometric pressure
Power steering oil pressure switch Power steering operation
Heated oxygen sensor 2* Density of oxygen in exhaust gas
*: Under normal conditions, this sensor is not for engine control operation.
Basic Multiport Fuel Injection System
Throttle position
Throttle valve idle position
Fuel injection & mixture ratio
control
Injectors
NAEC0014S02
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 (injection pulse duration). The amount of fuel injected is a program value 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 both the crankshaft position sensor and the mass air
flow sensor.
Various Fuel Injection Increase/Decrease Compensation
NAEC0014S03
In addition, the amount of fuel injected is compensated to improve engine performance under various operating conditions as listed below.
<Fuel increase>
I During warm-up
I When starting the engine
I During acceleration
I Hot-engine operation
I When selector lever is changed from “N” to “D”
I High-load, high-speed operation
<Fuel decrease>
I During deceleration
I During high engine speed operation
EC-30
Page 31
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Multiport Fuel Injection (MFI) System (Cont’d)
Mixture Ratio Feedback Control (Closed loop control)
The mixture ratio 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 heated oxygen sensor 1 in the exhaust manifold to monitor if the engine operation is rich or lean. The ECM
adjusts the injection pulse width according to the sensor voltage signal. For more information about the heated
oxygen sensor 1, refer to EC-254. This maintains the mixture ratio within the range of stoichiometric (ideal
air-fuel mixture).
This stage is referred to as the closed loop control condition.
Heated oxygen sensor 2 is located downstream of the three way catalyst (manifold). Even if the switching
characteristics of the heated oxygen sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal from the 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.
I Deceleration and acceleration
I High-load, high-speed operation
I Malfunction of heated oxygen sensor 1 or its circuit
I Insufficient activation of heated oxygen sensor 1 at low engine coolant temperature
I High engine coolant temperature
I During warm-up
I After shifting from “N” to “D”
I When starting the engine
NAEC0014S04
SEF336WC
NAEC0014S05
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Mixture Ratio Self-learning Control
The mixture ratio feedback control system monitors the mixture ratio signal transmitted from the heated oxygen 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
changes during operation (i.e., injector clogging) directly affect mixture ratio.
Accordingly, the difference between the basic and theoretical mixture ratios is monitored in this system. This
is then computed in terms of “injection pulse duration” to automatically compensate for the difference between
the two ratios.
“Fuel trim” refers to the feedback compensation value compared against the basic injection duration. Fuel trim
includes short term fuel trim and long term fuel trim.
“Short term fuel trim” is the short-term fuel compensation used to maintain the mixture ratio at its theoretical
value. The signal from the heated oxygen 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 overall fuel compensation carried out long-term to compensate for continual deviation
of the short term fuel trim from the central value. Such deviation will occur due to individual engine differences,
wear over time and changes in the usage environment.
NAEC0014S06
EC-31
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Multiport Fuel Injection (MFI) System (Cont’d)
Fuel Injection Timing
NAEC0014S07
SEF179U
Two types of systems are used.
Sequential Multiport Fuel Injection System
NAEC0014S0701
Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used
when the engine is running.
Simultaneous Multiport Fuel Injection System
NAEC0014S0702
Fuel is injected simultaneously into all six cylinders twice each engine cycle. In other words, pulse signals of
the same width are simultaneously transmitted from the ECM.
The six 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
NAEC0014S08
Fuel to each cylinder is cut off during deceleration or operation of the engine at excessively high speeds.
Electronic Ignition (EI) System
DESCRIPTION
Input/Output Signal Chart
Sensor Input Signal to ECM
Crankshaft position sensor (POS) Engine speed (POS signal)
Crankshaft position sensor (REF) Engine speed (REF signal)
Camshaft position sensor (PHASE) Piston position
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor
Vehicle speed sensor Vehicle speed
Ignition switch Start signal
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Battery Battery voltage
Throttle position
Throttle valve idle position
ECM func-
tion
Ignition
timing control
NAEC0015
NAEC0015S01
Actuator
Power transistor
EC-32
Page 33
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Electronic Ignition (EI) System (Cont’d)
System Description
SEF742M
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of
the engine. The ignition timing data is stored in the ECM. This data forms the map shown.
The ECM receives information such as the injection pulse width and camshaft position sensor signal. Computing this information, ignition signals are transmitted to the power transistor.
e.g., N: 1,800 rpm, Tp: 1.50 msec
A °BTDC
During the following conditions, the ignition timing is revised by the ECM according to the other data stored
in the ECM.
I At starting
I During warm-up
I At idle
I At low battery voltage
I 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.
NAEC0015S02
Air Conditioning Cut Control
DESCRIPTION
Input/Output Signal Chart
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch Air conditioner “ON” signal
NAEC0016
NAEC0016S01
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Throttle position sensor Throttle valve opening angle
Crankshaft position sensor (POS) Engine speed (POS signal)
Crankshaft position sensor (REF) Engine speed (REF signal)
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Vehicle speed sensor Vehicle speed
Refrigerant pressure sensor Refrigerant pressure
Power steering oil pressure switch Power steering operation
System Description
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
I When the accelerator pedal is fully depressed.
I When cranking the engine.
I At high engine speeds.
EC-33
Air conditioner
cut control
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Air Conditioning Cut Control (Cont’d)
I When the engine coolant temperature becomes excessively high.
I When operating power steering during low engine speed or low vehicle speed.
I When engine speed is excessively low.
I When refrigerant pressure is excessively low or high.
Fuel Cut Control (at no load & high engine speed)
DESCRIPTION
Input/Output Signal Chart
Sensor Input Signal to ECM
Vehicle speed sensor Vehicle speed
Park/neutral position (PNP) switch Neutral position
ECM func-
tion
NAEC0017
NAEC0017S01
Actuator
Throttle position sensor Throttle position
Engine coolant temperature sensor Engine coolant temperature
Crankshaft position sensor (POS) Engine speed (POS signal)
Crankshaft position sensor (REF) Engine speed (REF signal)
Fuel cut
control
Injectors
If the engine speed is above 1,800 rpm with no load (for example, in neutral and engine speed over 1,800
rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed.
Fuel cut will operate until the engine speed reaches 1,500 rpm, then fuel cut is cancelled.
NOTE:
This function is different from deceleration control listed under “Multiport Fuel Injection (MFI) System”, EC-30.
Evaporative Emission System
DESCRIPTION
NAEC0018
SEF569XA
The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere 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. EVAPcanister purge volume control solenoid valve is controlled by ECM. When the engine
EC-34
Page 35
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Evaporative Emission System (Cont’d)
operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.
INSPECTION
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.
SEF428T
Tightening Torque
Tighten EVAP canister as shown in the figure.
Make sure new O-ring is installed properly between EVAPcanister and EVAP canister vent control valve.
NAEC0019
NAEC0019S01
NAEC0019S02
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SEF231SB
SEF445Y
Fuel Tank Vacuum Relief Valve (Built into fuel filler cap)
1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.
Pressure:
15.3 - 20.0 kPa (0.156 - 0.204 kg/cm
Vacuum:
−6.0 to −3.3 kPa (−0.061 to −0.034 kg/cm
−0.48 psi)
3. If out of specification, replace fuel filler cap as an assembly.
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.
2
, 2.22 - 2.90 psi)
NAEC0019S03
2
, −0.87 to
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Evaporative Emission System (Cont’d)
SEF462UA
SEF200U
PEF838U
Vacuum Cut Valve and Vacuum Cut Valve Bypass Valve
NAEC0019S04
Refer to EC-648.
Evaporative Emission (EVAP) Canister Purge Volume
Control Solenoid Valve
Refer to EC-370.
Fuel Tank Temperature Sensor
Refer to EC-298, 301.
Evap Service Port
Positive pressure is delivered to the EVAP system through the
EVAP service port. If fuel vapor leakage in the EVAP system
occurs, use a leak detector to locate the leak.
How to Detect Fuel Vapor Leakage
CAUTION:
I Never use compressed air or a high pressure pump.
I Do not exceed 4.12 kPa (0.042 kg/cm
in EVAP system.
NOTE:
I Do not start engine.
I Improper installation of EVAPservice port adapter to the EVAP
service port may cause a leak.
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.
8) Locatethe leak using a leak detector.Refer to “EVAPORATIVE
EMISSION LINE DRAWING”, EC-38.
2
, 0.6 psi) of pressure
NAEC0019S05
NAEC0019S06
NAEC0019S07
NAEC0019S08
NAEC0019S0801
PEF917U
EC-36
Page 37
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Evaporative Emission System (Cont’d)
SEF462UA
SEC930C
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.
3) Apply battery voltage to between the terminals of both EVAP
canister vent control valve and vacuum cut valve bypass valve
to make a closed EVAP system.
4) To locate the leak, deliver positive pressure to the EVAP system until pressure 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) Locatethe leak using a leak detector.Refer to “EVAPORATIVE
EMISSION LINE DRAWING”, EC-38.
2
, 0.2 to 0.4 psi).
NAEC0019S0802
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Evaporative Emission System (Cont’d)
EVAPORATIVE EMISSION LINE DRAWING
NAEC0020
EC-38
SEF954Z
Page 39
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Evaporative Emission System (Cont’d)
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR)
SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR)
NAEC0744S01
SEF206VA
NAEC0744
SEC883C
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 EVAP
canister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed
and 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:
I Put a “CAUTION: INFLAMMABLE” sign in workshop.
I Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
I Be sure to furnish the workshop with a CO
fire extinguisher.
2
EC-40
Page 41
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
CAUTION:
I Before removing fuel line parts, carry out the following procedures:
a) Put drained fuel in an explosion-proof container and put lid on securely.
b) Release fuel pressure from fuel line. Refer to “Fuel Pressure Release”, EC-51.
c) Disconnect battery ground cable.
I Always replace O-ring when the fuel gauge retainer is removed.
I Do not kink or twist hose and tube when they are installed.
I Do not tighten hose and clamps excessively to avoid damaging hoses.
I After installation, run engine and check for fuel leaks at connection.
I 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.
DIAGNOSTIC PROCEDURE
Symptom: Fuel Odor from EVAP Canister Is Strong.
1 CHECK EVAP CANISTER
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.
NAEC0744S02
NAEC0744S0201
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2 CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
YesorNo
Yes © GO TO 3.
No (With CONSULT-II) © GO TO 6.
No (Without CONSULT-
II)
3 REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
© GO TO 7.
© GO TO 4.
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
4 CHECK WATER SEPARATOR
1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Check that A and C are not clogged by blowing air into B with A, and then C plugged.
5. In case of NG in items2-4,replace the parts.
NOTE:
I Do not disassemble water separator.
OK or NG
OK © GO TO 5.
NG © Replace water separator.
PBIB1032E
5 DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and water separator for clogging or poor connection.
© Repair or replace EVAP hose.
EC-42
Page 43
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
6 CHECK REFUELING EVAP VAPOR CUT VALVE
With CONSULT-II
1. Remove fuel tank. Refer to FE-4, “FUEL SYSTEM.
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 valve for being stuck to open as follows.
a. Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
b. Remove fuel gauge retainer with fuel 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 applicable.
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OK or NG
OK © GO TO 8.
NG © Replace refueling EVAP vapor cut valve with fuel tank.
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
7 CHECK REFUELING EVAP VAPOR CUT VALVE
Without CONSULT-II
1. Remove fuel tank. Refer to FE-4, “FUEL SYSTEM”.
2. Drain fuel from the tank as follows:
a. Remove fuel gauge retainer.
b. Drain fuel from the tank using a hand pump into a fuel container.
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 valve for being stuck to open as follows.
a. Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
b. Remove fuel gauge retainer with fuel 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 applicable.
SEF968X
OK or NG
OK © GO TO 8.
NG © Replace refueling EVAP vapor cut valve with fuel tank.
8 CHECK REFUELING CONTROL VALVE
1. Remove fuel filler cap.
2. Check air continuity 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 leakage.
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-way connector. Check that there is no leakage.
SEF968X
OK or NG
OK © INSPECTION END
NG © Replace refueling control valve with fuel tank.
EC-44
Page 45
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
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 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?
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Yes © GO TO 3.
No © GO TO 6.
3 REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
© GO TO 4.
YesorNo
SEF596U
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
4 CHECK WATER SEPARATOR
1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Check that A and C are not clogged by blowing air into B with A, and then C plugged.
5. In case of NG in items2-4,replace the parts.
NOTE:
I Do not disassemble water separator.
OK or NG
OK © GO TO 5.
NG © Replace water separator.
PBIB1032E
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 tubes between EVAP canister and refueling control valve for clogging, kink, looseness and improper
connection.
OK or NG
OK © GO TO 7.
NG © Repair or replace hoses and tubes.
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.
EC-46
Page 47
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
8 CHECK REFUELING CONTROL VALVE
1. Remove fuel filler cap.
2. Check air continuity 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 leakage.
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-way connector. Check that there is no leakage.
SEF968X
OK or NG
OK (With CONSULT-II) © GO TO 9.
OK (Without CONSULT-
II)
NG © Replace refueling control valve with fuel tank.
© GO TO 10.
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9 CHECK REFUELING EVAP VAPOR CUT VALVE
With CONSULT-II
1. Remove fuel tank. Refer to FE-4, “FUEL SYSTEM”.
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 valve for being stuck to open as follows.
a. Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
b. Remove fuel gauge retainer with fuel 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 applicable.
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OK or NG
OK © GO TO 11.
NG © Replace refueling EVAP vapor cut valve with fuel tank.
EC-47
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
10 CHECK REFUELING EVAP VAPOR CUT VALVE
Without CONSULT-II
1. Remove fuel tank. Refer to FE-4, “FUEL SYSTEM”.
2. Drain fuel from the tank as follows:
a. Remove fuel gauge retainer.
b. Drain fuel from the tank using a hand pump into a fuel container.
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 valve for being stuck to open as follows.
a. Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
b. Remove fuel gauge retainer with fuel 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 applicable.
OK or NG
OK © GO TO 11.
NG © Replace refueling EVAP vapor cut valve with fuel tank.
11 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 12.
NG © Replace fuel filler tube.
12 CHECK ONE-WAY FUEL VALVE-I
Check one-way valve for clogging.
OK or NG
OK © GO TO 13.
NG © Repair or replace one-way fuel valve with fuel tank.
SEF968X
EC-48
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR) (Cont’d)
13 CHECK ONE-WAY FUEL VALVE-II
1. Make sure that fuel is drained from the tank.
2. Remove fuel filler tube and hose.
3. Check one-way fuel valve for operation as follows.
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.
Positive Crankcase Ventilation
DESCRIPTION
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-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 any
blow-by and a small amount of ventilating air.
The ventilating air is then drawn from the air inlet tubes into the
SEF372Q
crankcase. In this process the air passes through the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to
draw the blow-by flow 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.
SEF665U
NAEC0021
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SEF559A
SEC137A
INSPECTION
PCV (Positive Crankcase Ventilation) Valve
With engine running at idle, remove PCV valve ventilation hose
from PCV valve; if the valve is working properly, a hissing noise will
be heard as air passes through it and a strong vacuum should be
felt immediately when a finger is placed over valve inlet.
NAEC0022
NAEC0022S01
EC-49
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ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Positive Crankcase Ventilation (Cont’d)
ET277
PCV Valve Ventilation Hose
NAEC0022S02
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.
EC-50
Page 51
BASIC SERVICE PROCEDURE
Fuel Pressure Release
SEF941Y
SEF214Y
Fuel Pressure Release
Before disconnecting fuel line, release fuel pressure from fuel
line to eliminate danger.
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 ignition 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 ignition switch “OFF”.
5. Reinstall fuel pump fuse after servicing fuel system.
NAEC0023
NAEC0023S01
NAEC0023S02
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SEF933Y
SEF327Z
Fuel Pressure Check
I When reconnecting fuel line, always use new clamps.
I Make sure that clamp screw does not contact adjacent
parts.
I Use a torque driver to tighten clamps.
I Use Pressure Gauge to check fuel pressure.
I Do not perform fuel pressure check with electrical system
operating (i.e. lights, rear window defogger,A/C, etc.). Fuel
pressure gauge may indicate false readings due to varying engine loads and change in manifold vacuum.
1. Release fuel pressure to zero.
2. Disconnect fuel tube joint between fuel damper and injector
tube and set fuel pressure check adapter (J44321).
NAEC0024
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EC-51
Page 52
Fuel Pressure Check (Cont’d)
BASIC SERVICE PROCEDURE
3. Install pressure gauge to the fuel pressure check adapter as
shown in the figure.
4. Start engine and check for fuel leakage.
5. Read the indication of fuel pressure gauge.
At idling:
With vacuum hose connected
Approximately 235 kPa (2.4 kg/cm
With vacuum hose disconnected
Approximately 294 kPa (3.0 kg/cm
SEF328Z
If results are unsatisfactory, perform Fuel Pressure Regulator
Check.
2
, 34 psi)
2
, 43 psi)
SEF329Z
SEF718BA
Fuel Pressure Regulator Check
NAEC0025
1. Stop engine and disconnect fuel pressure regulator vacuum
hose from vacuum gallery.
2. Plug vacuum gallery with a blind cap.
3. Connect variable vacuum source to fuel pressure regulator.
4. Start engine and read indication of fuel pressure gauge as
vacuum is changed.
Fuel pressure should decrease as vacuum increases. If results
are unsatisfactory, replace fuel pressure regulator.
EC-52
Page 53
BASIC SERVICE PROCEDURE
Injector
SEF937Y
SEF703X
Injector
REMOVAL AND INSTALLATION
1. Release fuel pressure to zero.
2. Remove intake manifold collector. Refer to EM-20, “TIMING
CHAIN”.
3. Remove fuel tube assemblies in numerical sequence as
shown in the figure at left.
4. Expand and remove clips securing fuel injectors.
5. Extract fuel injectors straight from fuel tubes.
I Be careful not to damage injector nozzles during removal.
I Do not bump or drop fuel injectors.
6. Carefully install O-rings, including the one used with the pressure regulator.
I Lubricate O-rings with a smear of engine oil.
I Be careful not to damage O-rings with service tools, fin-
ger nails or clips. Do not expand or twist O-rings.
I Discard old clips; replace with new ones.
7. Position clips in grooves on fuel injectors.
I Make sure that protrusions of fuel injectors are aligned
with cutouts of clips after installation.
NAEC0026
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SEF938Y
8. Align protrusions of fuel tubes with those of fuel injectors.
Insert fuel injectors straight into fuel tubes.
9. After properly inserting fuel injectors, check to make sure that
fuel tube protrusions are engaged with those of fuel injectors,
and that flanges of fuel tubes are engaged with clips.
EC-53
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Injector (Cont’d)
BASIC SERVICE PROCEDURE
10. Tighten fuel tube assembly mounting nuts in numerical
sequence (indicated in the figure at left) and in two stages.
: Tightening torque N·m (kg-m, ft-lb)
1st stage:
9.3 - 10.8 (1.0 - 1.1, 6.9 - 7.9)
2nd stage:
20.6 - 26.5 (2.1 - 2.7, 16 - 19)
11. Install all parts removed in reverse order of removal.
CAUTION:
SEF939Y
After properly connecting fuel tube assembly to injector and
fuel hose, check connection for fuel leakage.
How to Check Idle Speed and Ignition Timing
IDLE SPEED
I Using CONSULT-II
Check idle speed in “DATA MONITOR” mode with CONSULT-II.
NAEC0607
NAEC0607S01
SEF058Y
SEF940Y
SEF942Y
IGNITION TIMING
Any of following two methods may be used.
I Method A
a) Attach timing light to loop wire as shown.
b) Check ignition timing.
I Method B
a) Remove No. 1 ignition coil.
NAEC0607S02
EC-54
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BASIC SERVICE PROCEDURE
How to Check Idle Speed and Ignition Timing (Cont’d)
SEF943Y
SEF572X
b) Connect No. 1 ignition coil and No. 1 spark plug with suitable
high-tension wire as shown, and attach timing light clamp to
this wire.
c) Check ignition timing.
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SEF311Q
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment
PREPARATION
1) Make sure that the following parts are in good order.
I Battery
I Ignition system
I Engine oil and coolant levels
I Fuses
I ECM harness connector
I Vacuum hoses
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NAEC0028S01
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EC-55
Page 56
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
I Air intake system
(Oil filler cap, oil level gauge, etc.)
I Fuel pressure
I Engine compression
I Throttle valve
I Evaporative emission system
2) On air conditioner equipped models, checks should be carried out while the air conditioner is “OFF”.
3) On automatic transmission equipped models, when checking idle rpm, ignition timing and mixture ratio,
checks should be carried out while shift lever is in “N” position.
4) When measuring “CO” percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
5) Turn off headlamps, heater blower, rear defogger.
6) Keep front wheels pointed straight ahead.
7) Make the check after the cooling fan has stopped.
EC-56
Page 57
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
Overall Inspection Sequence
NAEC0028S0101
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EC-57
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BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
INSPECTION PROCEDURE
1 INSPECTION START
1. Visually check the following:
I Air cleaner clogging
I Hoses and ducts for leaks
I Electrical connectors
I Gasket
I Throttle valve and throttle position sensor operation
2. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.
Ensure engine stays below 1,000 rpm.
3. Open engine hood and run engine at about 2,000 rpm for about 2 minutes under no-load.
=NAEC0028S02
SEF976U
4. 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 necessary according to corresponding “Diagnostic Procedure”.
© GO TO 3.
SEF977U
EC-58
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BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
3 CHECK TARGET IDLE SPEED
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.
M/T: 750±50 rpm
A/T: 750±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.
M/T: 750±50 rpm
A/T: 750±50 rpm (in “P” or “N” position)
OK or NG
OK © GO TO 12.
NG © GO TO 4.
4 PERFORM IDLE AIR VOLUME LEARNING
Refer to “Idle Air Volume Learning”, EC-70.
Is Idle Air Volume Learning carried out successfully?
YesorNo
Yes © GO TO 5.
No © 1. Follow the instruction of “Idle Air Volume Leaning”.
2. GO TO 4.
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5 CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.
M/T: 750±50 rpm
A/T: 750±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.
M/T: 750±50 rpm
A/T: 750±50 rpm (in “P” or “N” position)
OK or NG
OK © GO TO 10.
NG © GO TO 6.
6 REPLACE IACV-AAC VALVE
Replace IACV-AAC valve.
© GO TO 7.
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BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
7 PERFORM IDLE AIR VOLUME LEARNING
Refer to “Idle Air Volume Learning”, EC-70.
Is Idle Air Volume Learning carried out successfully?
YesorNo
Yes © GO TO 8.
No © 1. Follow the instruction of “Idle Air Volume Learning”.
2. GO TO 4.
8 CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.
M/T: 750±50 rpm
A/T: 750±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.
M/T: 750±50 rpm
A/T: 750±50 rpm (in “P” or “N” position)
OK or NG
OK © GO TO 10.
NG © GO TO 9.
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 rarely
the case.)
2. Perform initialization of NVIS (NATS) system and registration of NVIS (NATS) ignition key IDs. Refer to “NVIS (NISSAN
VEHICLE IMMOBILIZER SYSTEM — NATS)”, EC-88.
© GO TO 4.
10 CHECK IGNITION TIMING
1. Start engine and warm it up to normal operating temperature.
2. Check ignition timing at idle using a timing light.
SEF572X
Ignition timing:
M/T: 15°±5° BTDC
A/T: 15°±5° BTDC (in “P” or “N” position)
OK or NG
OK © GO TO 18.
NG © GO TO 11.
EC-60
Page 61
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
11 CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-29, “Installation”.
OK or NG
OK © GO TO 9.
NG © 1. Repair the timing chain installation.
2. GO TO 4.
12 CHECK IGNITION TIMING
1. Start engine and let it idle.
2. Check ignition timing at idle using a timing light.
Ignition timing:
M/T: 15°±5° BTDC
A/T: 15°±5° BTDC (in “P” or “N” position)
OK or NG
OK © GO TO 18.
NG © GO TO 13.
SEF572X
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13 PERFORM IDLE AIR VOLUME LEARNING
Refer to “Idle Air Volume Learning”, EC-70.
Is Idle Air Volume Learning carried out successfully?
YesorNo
Yes © GO TO 14.
No © 1. Follow the instruction of “Idle Air volume Learning”.
2. GO TO 13.
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EC-61
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BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
14 CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “ENG SPEED” in “DATA MONITOR” mode with CONSULT-II.
3. Check idle speed.
M/T: 750±50 rpm
A/T: 750±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.
M/T: 750±50 rpm
A/T: 750±50 rpm (in “P” or “N” position)
OK or NG
OK © GO TO 16.
NG © GO TO 15.
15 CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function.
(ECM may be the cause of an incident, but this is rarely the case.)
2. Perform initialization of NVIS (NATS) system and registration of NVIS (NATS) ignition key IDs. Refer to “NVIS (NISSAN
VEHICLE IMMOBILIZER SYSTEM — NATS)”, EC-88.
© GO TO 13.
16 CHECK IGNITION TIMING AGAIN
Check ignition timing again. Refer to Test No. 12.
OK or NG
OK © GO TO 18.
NG © GO TO 17.
17 CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-29, “Installation”.
OK or NG
OK © GO TO 15.
NG © 1. Repair the timing chain installation.
2. GO TO 13.
18 ERASE UNNECESSARY DTC
After this inspection, unnecessary DTC No. might be displayed.
Erase the stored memory in ECM and TCM (Transmission control module).
Refer to “HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION”, EC-86 and AT-35 , “HOW TO ERASE
DTC”.
With CONSULT-II © GO TO 19.
Without CONSULT-II © GO TO 20.
EC-62
Page 63
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
19 CHECK HEATED OXYGEN SENSOR 1 (BANK 2) SIGNAL
With CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
2. See “HO2S1 MNTR (B2)” in “DATA MONITOR” mode.
3. Running engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the
monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.
SEF945Y
OK or NG
OK © GO TO 23.
NG (Monitor does not
fluctuate.)
NG (Monitor fluctuates
less than 5 times.)
© GO TO 28.
© GO TO 21.
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20 CHECK HEATED OXYGEN SENSOR 1 (BANK 2) SIGNAL
Without CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
2. Set voltmeter probe between ECM terminal 62 and ground.
3. Make sure that the voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000
rpm.
1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
OK or NG
OK © GO TO 23.
NG (Voltage does not
fluctuate.)
NG (Voltage fluctuates
less than 5 times.)
© GO TO 28.
© GO TO 21.
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BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
21 CHECK HEATED OXYGEN SENSOR 1 (BANK 2) SIGNAL
With CONSULT-II
1. Stop engine.
2. Replace heated oxygen sensor 1 (bank 2).
3. Start engine and warm it up to normal operating temperature.
4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.
5. See “HO2S1 MNTR (B2)” in “DATA MONITOR” mode.
6. Running engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the
monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.
1 time: RICH → LEAN → RICH
2 times: RICH → LEAN → RICH → LEAN → RICH
Without CONSULT-II
1. Stop engine.
2. Replace heated oxygen sensor 1 (bank 2).
3. Start engine and warm it up to normal operating temperature.
4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.
5. Set voltmeter probe between ECM terminal 62 and ground.
6. Make sure that the voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000
rpm.
1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
OK or NG
OK (With CONSULT-II) © GO TO 23.
OK (Without CONSULT-
II)
NG © GO TO 22.
© GO TO 24.
22 DETECT MALFUNCTIONING PART
Check the following.
1. Check fuel pressure regulator. Refer to EC-52.
2. Check mass air flow sensor and its circuit. Refer to EC-184, 191 and 481.
3. Check injector and its circuit. Refer to EC-687.
Clean or replace if necessary.
4. Check engine coolant temperature sensor and its circuit. Refer to EC-203 and 227.
5. Check ECM function by substituting another known-good ECM.
(ECM may be the cause of an incident, but this is rarely the case.)
© GO TO 3.
EC-64
Page 65
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
23 CHECK HEATED OXYGEN SENSOR 1 (BANK 1) SIGNAL
With CONSULT-II
1. See “HO2S1 MNTR (B1)” in “DATA MONITOR” mode.
2. Maintaining engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the
monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.
SEF945Y
OK or NG
OK © INSPECTION END
NG (Monitor does not
fluctuate.)
NG (Monitor fluctuates
less than 5 times.)
© GO TO 27.
© GO TO 25.
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24 CHECK HEATED OXYGEN SENSOR 1 (BANK 1) SIGNAL
Without CONSULT-II
1. Set voltmeter probe between ECM terminal 63 and ground.
2. Make sure that the voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000
rpm.
1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
OK or NG
OK © INSPECTION END
NG (Voltage does not
fluctuate.)
NG (Voltage fluctuates
less than 5 times.)
© GO TO 27.
© GO TO 25.
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EC-65
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BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
25 CHECK HEATED OXYGEN SENSOR 1 (BANK 1) SIGNAL
With CONSULT-II
1. Stop engine.
2. Replace heated oxygen sensor 1 (bank 1).
3. Start engine and warm it up to normal operating temperature.
4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.
5. See “HO2S1 MNTR (B1)” in “DATA MONITOR” mode.
6. Maintaining engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the
monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.
1 time: RICH → LEAN → RICH
2 times: RICH → LEAN → RICH → LEAN → RICH
Without CONSULT-II
1. Stop engine.
2. Replace heated oxygen sensor 1 (bank 1).
3. Start engine and warm it up to normal operating temperature.
4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.
5. Set voltmeter probe between ECM terminal 63 and ground.
6. Make sure that the voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000
rpm.
1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
OK or NG
OK © INSPECTION END
NG © GO TO 26.
26 DETECT MALFUNCTIONING PART
Check the following.
I Check fuel pressure regulator. Refer to EC-52.
I Check mass air flow sensor and its circuit. Refer to EC-184, 191 and 481.
I Check injector and its circuit. Refer to EC-687.
Clean or replace if necessary.
I Check engine coolant temperature sensor and its circuit. Refer to EC-203 and 227.
I Check ECM function by substituting another known-good ECM.
(ECM may be the cause of an incident, but this is rarely the case.)
© GO TO 3.
27 CHECK HEATED OXYGEN SENSOR 1 (BANK 1) HARNESS
1. Turn off engine and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (bank 1) harness connector.
4. Check harness continuity between ECM terminal 63 and heated oxygen sensor 1 (bank 1) harness connector terminal
2.
Refer to Wiring Diagram, EC-258.
Continuity should exist.
OK or NG
OK © GO TO 30.
NG © GO TO 29.
EC-66
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BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
28 CHECK HEATED OXYGEN SENSOR 1 (BANK 2) HARNESS
1. Turn off engine and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (bank 2) harness connector.
4. Check harness continuity between ECM terminal 62 and heated oxygen sensor 1 (bank 2) harness connector terminal
2.
Refer to Wiring Diagram, EC-259.
Continuity should exist.
OK or NG
OK © GO TO 30.
NG © GO TO 29.
29 REPAIR OR REPLACE
Repair or replace harness between ECM and heated oxygen sensor 1.
© GO TO 3.
30 PREPARATION FOR “CO” % CHECK
With CONSULT-II
1. Reconnect ECM harness connector.
2. Turn ignition switch “ON”.
3. Select “ENG COOLANT TEMP” in “ACTIVE TEST” mode.
4. Set “ENG COOLANT TEMP” to 5°C (41°F) by touching “DOWN” and “Qd”.
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Without CONSULT-II
1. Disconnect ECM harness connector.
2. Disconnect engine coolant temperature sensor harness connector.
3. Connect a resistor (4.4 kΩ) between terminals of engine coolant temperature sensor harness connector.
© GO TO 31.
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BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
31 CHECK “CO” %
With CONSULT-II
1. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.
2. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed.
SEF976U
3. Check “CO” %.
Idle CO: 1.0 - 9.5%
Without CONSULT-II
1. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.
2. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed.
SEF978U
SEF976U
3. Check “CO” %.
4. After checking CO%,
a. Disconnect the resistor from terminals of engine coolant temperature sensor.
b. Connect engine coolant temperature sensor harness connector to engine coolant temperature sensor.
OK or NG
OK © GO TO 32.
NG © GO TO 33.
EC-68
SEF978U
Page 69
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
32 CHECK HEATED OXYGEN SENSOR 1 (BANK 1)/(BANK 2) SIGNAL
With CONSULT-II
1. Stop engine.
2. Replace heated oxygen sensor 1 (bank 1)/(bank 2).
3. Start engine and warm it up to normal operating temperature.
4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.
5. See “HO2S1 MNTR (B1)/(B2)” in “DATA MONITOR” mode.
6. Maintaining engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the
monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.
1 time: RICH → LEAN → RICH
2 times: RICH → LEAN → RICH → LEAN → RICH
Without CONSULT-II
1. Stop engine.
2. Replace heated oxygen sensor 1 (bank 1)/(bank 2).
3. Start engine and warm it up to normal operating temperature.
4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.
5. Set voltmeter probe between ECM terminal 63 or 62 and ground.
6. Make sure that voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000 rpm.
1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V
OK or NG
OK © GO TO 3.
NG © GO TO 33.
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33 DETECT MALFUNCTIONING PART
Check the following.
I Connect heated oxygen sensor 1 harness connectors to heated oxygen sensors 1.
I Check fuel pressure regulator. Refer to EC-52.
I Check mass air flow sensor and its circuit. Refer to EC-184, 191 and 481.
I Check injector and its circuit. Refer to EC-687.
Clean or replace if necessary.
I Check engine coolant temperature sensor and its circuit. Refer to EC-203 and 227.
I Check ECM function by substituting another known-good ECM.
(ECM may be the cause of an incident, but this is rarely the case.)
© GO TO 3.
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Idle Air Volume Learning
BASIC SERVICE PROCEDURE
SEF452Y
SEF454Y
Idle Air Volume Learning
DESCRIPTION
NAEC0642
NAEC0642S01
“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:
I Each time IACV-AAC valve, throttle body or ECM is replaced.
I Idle speed or ignition timing is out of specification.
PRE-CONDITIONING
NAEC0642S02
Before performing “IdleAir 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 even a moment.
I Battery voltage: More than 12.9V (At idle)
I Engine coolant temperature: 70 - 99°C (158 - 210°F)
I PNP switch: ON
I 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 illuminate.
I Cooling fan motor: Not operating
I Steering wheel: Neutral (Straight-ahead position)
I Vehicle speed: Stopped
I Transmission: Warmed-up
For A/T models with CONSULT-II, drive vehicle until “FLUID
TEMP SE” in “DATA MONITOR” mode of “A/T” system indicates less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive
vehicle for 10 minutes.
MBIB0238E
OPERATION PROCEDURE
With CONSULT-II
NAEC0642S03
NAEC0642S0301
1. Turn ignition switch “ON” and wait at least 1 second.
2. Turn ignition switch “OFF” and wait at least 10 seconds.
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic “PRE-CONDITIONING” (previously mentioned) are in good order.
5. Turn ignition switch “OFF” and wait at least 10 seconds.
6. Start the engine and let it idle for at least 30 seconds.
7. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
8. Touch “START” and wait 20 seconds.
9. Make sure that “CMPLT” is displayed on CONSULT-II screen.
If “CMPLT” is not displayed, “Idle Air Volume Learning” will not
be carried out successfully. In this case, find the cause of the
incident by referring to the NOTE below.
10. Rev up the engine two or three times. Make sure that idle
speed and ignition timing are within specifications.
ITEM SPECIFICATION
Idle speed M/T: 750±50 rpm
A/T: 750±50 rpm (in “P” or “N” position)
Ignition timing M/T: 15°±5° BTDC
A/T: 15°±5° BTDC (in “P” or “N” position)
EC-70
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BASIC SERVICE PROCEDURE
Idle Air Volume Learning (Cont’d)
SEF944Y
Without CONSULT-II
1. Turn ignition switch “ON” and wait at least 1 second.
2. Turn ignition switch “OFF” and wait at least 10 seconds.
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic “PRE-CONDITIONING” (previously mentioned) are in good order.
5. Turn ignition switch “OFF” and wait at least 10 seconds.
6. Start the engine and let it idle for at least 30 seconds.
7. Disconnect throttle position sensor harness connector (brown),
then reconnect it within 5 seconds.
8. Wait 20 seconds.
9. Make sure that idle speed is within specifications. If not, the
result will be incomplete. In this case, find the cause of the
incident by referring to the NOTE below.
10. Rev up the engine two or three times. Make sure that idle
speed and ignition timing are within specifications.
ITEM SPECIFICATION
Idle speed M/T: 750±50 rpm
A/T: 750±50 rpm (in “P” or “N” position)
Ignition timing M/T: 15°±5° BTDC
A/T: 15°±5° BTDC (in “P” or “N” position)
NOTE:
If idle air volume learning cannot be performed successfully,
proceed as follows:
1) Check that throttle valve is fully closed.
2) Check PCV valve operation.
3) Check that downstream of throttle valve is free from air
leakage.
4) Adjust closed throttle position switch and reset memory.
(Refer to Basic Inspection, EC-117.)
5) When the above four items check out OK, engine component parts and their installation condition are questionable. Check and eliminate the cause of the incident. It is
useful to perform “TROUBLE DIAGNOSIS — SPECIFICATION VALVE”, EC-150.
6) If any of the following conditions occur after the engine
has started, eliminate the cause of the incident and perform “Idle air volume learning” all over again:
I Engine stalls.
I Erroneous idle.
I Blown fuses related to the IACV-AAC valve system.
NAEC0642S0302
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Introduction
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Introduction
NAEC0029
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actuators. The ECM also records various emission-related diagnostic information including:
Emission-related diagnostic information SAE Mode
Diagnostic Trouble Code (DTC) Mode 3 of SAE J1979
Freeze Frame data Mode 2 of SAE J1979
System Readiness Test (SRT) code Mode 1 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC) Mode 7 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits Mode 6 of SAE J1979
Calibration ID Mode 9 of SAE 1979
The above information can be checked using procedures listed in the table below.
X: Applicable —: Not applicable
DTC 1st trip DTC
CONSULT-II X X X X X —
GST X X*1 X — X X
ECM X X*2
Freeze Frame
data
1st trip Freeze
Frame data
SRT code Test value
*1: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.
*2: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to EC-131.)
Two Trip Detection Logic
NAEC0030
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 lights up. The MIL lights up at the same time when the DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
X: Applicable —: Not Exit
MIL DTC 1st trip DTC
Items
Misfire (Possible three way catalyst
damage) — DTC: P0300 - P0306
is being detected
Misfire (Possible three way catalyst
damage) — DTC: P0300 - P0306
is being detected
1st trip 2nd trip
Blinking Lighting up Blinking
X — ————X—
——X——X——
Lighting
up
1st trip
displaying
2nd trip
displaying
1st trip
displaying
2nd trip
displaying
Closed loop control
— DTC: P1148, P1168
Fail-safe items (Refer to EC-131.) — X — — X*1 — X*1 —
Except above — — — X — X X —
*1: Except “ECM”
— X ——X—X—
EC-72
Page 73
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information
Emission-related Diagnostic Information
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 was cleared previously, and the 1st trip DTC did not reoccur, 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 detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected 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 stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consecutive 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 clearing the DTC and the 1st trip DTC from the ECM memory are described in “HOW TO
ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION”, EC-86.
For malfunctions in which 1st trip DTCs are displayed, refer to EC-82. 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 Mode 7 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” procedure Step II, refer to EC-115. Then perform “DTC Confirmation Procedure” or “Overall Function Check” to try to duplicate the malfunction. If the malfunction is duplicated, the item
requires repair.
NAEC0031
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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) Examples: P0340, P0705, P0750, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)
No TOOLS
The number of times the MIL blinks in Diagnostic Test Mode II (Self-diagnostic Results) indicates the DTC.
(Example: 0340, 0705, 0750, etc.)
I 1st trip DTC No. is the same as DTC No.
I Output of a DTC indicates a malfunction. However, GST does not indicate whether the malfunction
is still occurring or has occurred in the past and has returned to normal. CONSULT-II can identify
malfunction status as shown below. Therefore, using CONSULT-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”.
If a 1st trip DTC is stored in the ECM, the time data will be “[1t]”.
NAEC0031S0101
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA
NAEC0031S02
The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant
temperature, short term fuel trim, long term fuel trim, engine speed, vehicle speed and absolute pressure at
the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II 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-101.
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 frame data and it is updated each time a different 1st trip DTC is detected. 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. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the following priorities to update the data.
Priority Items
1
2 Except the above items (Includes A/T related items)
3 1st trip freeze frame data
Freeze frame data Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
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
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different malfunction is detected. There is no priority for 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 “HOW TO ERASE EMISSIONRELATED DIAGNOSTIC INFORMATION”, EC-86.
SYSTEM READINESS TEST (SRT) CODE
NAEC0031S03
System Readiness Test (SRT) code is specified in Mode 1 of SAE J1979.
As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the 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 order 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.
If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector 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.
EC-74
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
SRT Item
The table below shows required self-diagnostic items to set the SRT to “CMPLT”.
SRT item
(CONSULT-II indica-
tion)
CATALYST 3 Three way catalyst function P0420, P0430
EVAP SYSTEM 2 EVAP control system (small leak) (negative pressure) P0442
O2 SENSOR 3 Heated oxygen sensor 1 (circuit) P0134, P0154
Perfor-
mance Pri-
ority*
3 EVAP control system (very small leak) (negative pressure)/
3 EVAP control system purge flow monitoring P0441
Required self-diagnostic items to set the SRT to “CMPLT”
(positive pressure)
Heated oxygen sensor 1 (lean shift monitoring) P1143, P1163
Heated oxygen sensor 1 (rich shift monitoring) P1144, P1164
Heated oxygen sensor 1 (response monitoring) P0133, P0153
Heated oxygen sensor 1 (high voltage) P0132, P0152
Heated oxygen sensor 2 (min. voltage monitoring) P1146, P1166
Heated oxygen sensor 2 (max. voltage monitoring) P1147, P1167
Heated oxygen sensor 2 (response monitoring) P0139, P0159
Corresponding
DTC No.
P0456/P1456
=NAEC0031S0310
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Heated oxygen sensor 2 (high voltage) P0138, P0158
O2 SEN HEATER 3 Heated oxygen sensor 1 heater P0031, P0032, P0051,
P0052
Heated oxygen sensor 2 heater P0037, P0038, P0057,
P0058
*: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority
for models with CONSULT-II.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
SRT Set Timing
=NAEC0031S0311
SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRTis done
regardless 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 Case 1 P0400 OK (1) — (1) OK (2) — (2)
Case 2 P0400 OK (1) — (1) — (1) — (1)
NG exists Case 3 P0400 OK OK — —
Diagnosis
P0402 OK (1) — (1) — (1) OK (2)
P1402 OK (1) OK (2) — (2) — (2)
SRT of EGR “CMPLT” “CMPLT” “CMPLT” “CMPLT”
P0402 — (0) — (0) OK (1) — (1)
P1402 OK (1) OK (2) — (2) — (2)
SRT of EGR “INCMP” “INCMP” “CMPLT” “CMPLT”
P0402 — — — —
P1402 NG — NG
+ ON , OFF + ON , OFF + ON , OFF + ON ,
Ignition cycle
NG
(Consecutive NG)
(1st trip)
DTC
SRT of EGR “INCMP” “INCMP” “INCMP” “CMPLT”
OK: Self-diagnosis is carried out and the result is OK.
NG: Self-diagnosis is carried out and the result is NG.
—: Self-diagnosis is not carried out.
1st trip DTC — 1st trip DTC
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
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 (Case1&2)ortwo(2)foroneofself-diagnoses (Case 3). However, in preparation for the state
emissions inspection, it is unnecessary of each self-diagnosis to be executed twice (Case 3) for the following
reasons:
I The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.
I The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results.
I When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to “CMPLT” of SRT, the self-diag-
nosis memory must be erased from ECM after repair.
I 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 SRT indicates “CMPLT”.
SRT Service Procedure
NAEC0031S0312
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.
EC-76
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
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How to Display SRT Code
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.
With GST
Selecting Mode 1 with GST (Generic Scan Tool)
A sample of CONSULT-II display for SRT code is shown below.
“INCMP” means the self-diagnosis is incomplete and SRT is not set. “CMPLT” means the self-diagnosis is
complete and SRT is set.
NAEC0031S0301
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
SEF949Z
How to Set SRT Code
NAEC0031S0302
To set all SRTcodes, self-diagnosis for the items indicated above must be performed one or more times. Each
diagnosis may require a long period of actual driving under various conditions.
With CONSULT-II
Perform corresponding DTC Confirmation Procedure one by one based on “Performance Priority” in the table
on EC-75.
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.
EC-78
Page 79
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
Driving Pattern
NAEC0031S0303
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
I 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:
I 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 70 and ground is 3.0 - 4.3V).
I The engine must be operated at idle speed until the engine coolant temperature is greater than 70°C
(158°F) (where the voltage between the ECM terminal 70 and ground is lower than 1.4V).
I The engine is started at the fuel tank temperature of warmer than 0°C (32°F) (where the voltage
between the ECM terminal 92 and ground is less than 4.1V).
Pattern 2:
I When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.
In this case, the time required for diagnosis may be extended.
Pattern 3:
I The driving pattern outlined in *2 must be repeated at least 3 times.
Pattern 4:
I Tests are performed after the engine has been operated for at least 17 minutes.
I The accelerator pedal must be held very steady during steady-state driving.
I If the accelerator pedal is moved, the test must be conducted all over again.
*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal
and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h
(56 MPH) again.
*2: Operate the vehicle in the following driving pattern.
1) Decelerate vehicle to 0 km/h (0 MPH) and let engine idle.
2) Repeat driving pattern shown below at least 10 times.
I During acceleration, hold the accelerator pedal as steady as possible.
SEF414S
*3: Checking the vehicle speed with GST is advised.
Suggested Transmission Gear Position for A/T Models
Set the selector lever in the “D” position with the overdrive switch turned ON.
Suggested upshift speeds for M/T models
Shown below are suggested vehicle speeds for shifting into a higher gear. These suggestions relate to fuel
economy and vehicle performance. Actual upshift speeds will vary according to road conditions, the weather
and individual driving habits.
EC-80
Page 81
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
For normal acceleration in low altitude areas
[less than 1,219 m (4,000 ft)]:
Gear change
1st to 2nd 21 (13) 21 (13) 24 (15)
2nd to 3rd 37 (23) 26 (16) 40 (25)
3rd to 4th 53 (33) 44 (27) 64 (40)
4th to 5th 63 (39) 58 (36) 72 (45)
ACCEL shift point
km/h (MPH)
CRUISE shift point
km/h (MPH)
For quick acceleration in low altitude
areas and high altitude areas
[over 1,219 m (4,000 ft)]:
km/h (MPH)
Suggested Maximum Speed in Each Gear
Downshift to a lower gear if the engine is not running smoothly, or if you need to accelerate.
Do not exceed the maximum suggested speed (shown below) in any gear. For level road driving, use the
highest gear suggested for that speed. Always observe posted speed limits and drive according to the road
conditions to ensure safe operation. Do not over-rev the engine when shifting to a lower gear as it may cause
engine damage or loss of vehicle control.
Gear km/h (MPH)
1st 50 (30)
2nd 89 (55)
3rd 128 (80)
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4th —
5th —
TEST VALUE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II)
NAEC0031S04
The following is the information specified in Mode 6 of SAE J1979.
The test value is a parameter used to determine whether a system/circuit diagnostic test is “OK” or “NG” while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
Items for which these data (test value and test limit) are displayed are the same as SRT code items (30 test
items).
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.
X: Applicable —: Not applicable
SRT item Self-diagnostic test item
Three way catalyst function
(bank 1)
CATALYST
Three way catalyst function
(bank 2)
EVAP control system
(Small leak)
EVAP SYSTEM
EVAP control system purge flow
monitoring
Test value (GST display)
Test limit Application
TID CID
01H 01H Max. X
03H 02H Max. X
05H 03H Max. X
06H 83H Min. X
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EC-81
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Page 82
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
SRT item Self-diagnostic test item
Heated oxygen sensor 1 (bank 1)
Heated oxygen sensor 1 (bank 2)
O2 SENSOR
Heated oxygen sensor 2 (bank 1)
Test value (GST display)
Test limit Application
TID CID
09H 04H Max. X
0AH 84H Min. X
0BH 04H Max. X
0CH 04H Max. X
0DH 04H Max. X
11H 05H Max. X
12H 85H Min. X
13H 05H Max. X
14H 05H Max. X
15H 05H Max. X
19H 86H Min. X
1AH 86H Min. X
1BH 06H Max. X
1CH 06H Max. X
21H 87H Min. X
Heated oxygen sensor 2 (bank 2)
Heated oxygen sensor 1 heater
(bank 1)
Heated oxygen sensor 1 heater
(bank 2)
O2 SENSOR HEATER
Heated oxygen sensor 2 heater
(bank 1)
Heated oxygen sensor 2 heater
(bank 2)
22H 87H Min. X
23H 07H Max. X
24H 07H Max. X
29H 08H Max. X
2AH 88H Min. X
2BH 09H Max. X
2CH 89H Min. X
2DH 0AH Max. X
2EH 8AH Min. X
2FH 0BH Max. X
30H 8BH Min. X
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
Items
(CONSULT-II screen terms)
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
CONSULT-II
GST*2
P0000 0000 ————
DTC*1
SRT code
ECM*3
Test value/
Testlimit
X: Applicable —: Not applicable
1st trip DTC*1
NAEC0031S05
Reference
page
INT/V TIM CONT-B1 P0011 0011 — — X EC-164
INT/V TIM CONT-B2 P0021 0021 — — X EC-164
HO2S1 HTR (B1) P0031 0031 X X X*5 EC-169
HO2S1 HTR (B1) P0032 0032 X X X*5 EC-169
EC-82
Page 83
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
Items
(CONSULT-II screen terms)
HO2S2 HTR (B1) P0037 0037 X X X*5 EC-176
HO2S2 HTR (B1) P0038 0038 X X X*5 EC-176
HO2S1 HTR (B2) P0051 0051 X X X*5 EC-169
HO2S1 HTR (B2) P0052 0052 X X X*5 EC-169
HO2S2 HTR (B2) P0057 0057 X X X*5 EC-176
HO2S2 HTR (B2) P0058 0058 X X X*5 EC-176
MAF SEN/CIRCUIT*7 P0101 0101 — — X EC-184
MAF SEN/CIRCUIT*7 P0102 0102 — — X EC-191
MAF SEN/CIRCUIT*7 P0103 0103 — — X EC-191
ABSL PRES SEN/CIRC P0107 0107 — — X EC-197
ABSL PRES SEN/CIRC P0108 0108 — — X EC-197
IAT SEN/CIRCUIT P0112 0112 — — X EC-199
IAT SEN/CIRCUIT P0113 0113 — — X EC-199
ECT SEN/CIRC*3 P0117 0117 — — X EC-203
CONSULT-II
GST*2
DTC*1
ECM*3
SRT code
Test value/
Testlimit
1st trip DTC*1
Reference
page
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ECT SEN/CIRC*3 P0118 0118 — — X EC-203
APP SEN/CIRCUIT*7 P0121 0121 — — X EC-208
TP SEN/CIRCUIT*7 P0122 0122 — — X EC-219
TP SEN/CIRCUIT*7 P0123 0123 — — X EC-219
ECT SENSOR*7 P0125 0125 — — X EC-227
IAT SENSOR P0127 0127 — — X EC-230
HO2S1 (B1) P0132 0132 X X X*5 EC-232
HO2S1 (B1) P0133 0133 X X X*5 EC-241
HO2S1 (B1) P0134 0134 X X X*5 EC-254
HO2S2 (B1) P0138 0138 X X X*5 EC-264
HO2S2 (B1) P0139 0139 X X X*5 EC-273
HO2S1 (B2) P0152 0152 X X X*5 EC-232
HO2S1 (B2) P0153 0153 X X X*5 EC-241
HO2S1 (B2) P0154 0154 X X X*5 EC-254
HO2S2 (B2) P0158 0158 X X X*5 EC-264
HO2S2 (B2) P0159 0159 X X X*5 EC-273
FUEL SYS-LEAN-B1 P0171 0171 — — X EC-283
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FUEL SYS-RICH-B1 P0172 0172 — — X EC-291
FUEL SYS-LEAN-B2 P0174 0174 — — X EC-283
FUEL SYS-RICH-B2 P0175 0175 — — X EC-291
FTT SENSOR P0181 0181 — — X EC-298
FTT SEN/CIRCUIT P0182 0182 — — X EC-301
EC-83
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Page 84
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
Items
(CONSULT-II screen terms)
FTT SEN/CIRCUIT P0183 0183 — — X EC-301
ENG OVER TEMP P0217 0217 — — X EC-306
MULTI CYL MISFIRE P0300 0300 — — X EC-312
CYL 1 MISFIRE P0301 0301 — — X EC-312
CYL 2 MISFIRE P0302 0302 — — X EC-312
CYL 3 MISFIRE P0303 0303 — — X EC-312
CYL 4 MISFIRE P0304 0304 — — X EC-312
CYL 5 MISFIRE P0305 0305 — — X EC-312
CYL 6 MISFIRE P0306 0306 — — X EC-312
KNOCK SEN/CIRC-B1 P0327 0327 — — — EC-320
KNOCK SEN/CIRC-B1 P0328 0328 — — — EC-320
CKP SEN/CIRCUIT P0335 0335 — — X EC-325
CMP SEN/CIRCUIT P0340 0340 — — X EC-333
TW CATALYST SYS-B1 P0420 0420 X X X*5 EC-338
CONSULT-II
GST*2
DTC*1
ECM*3
SRT code
Test value/
Testlimit
1st trip DTC*1
Reference
page
TW CATALYST SYS-B2 P0430 0430 X X X*5 EC-338
EVAP PURG FLOW/MON P0441 0441 X X X*5 EC-343
EVAP SMALL LEAK P0442 0442 X X X*5 EC-354
PURG VOLUME CONT/V P0444 0444 — — X EC-370
PURG VOLUME CONT/V P0445 0445 — — X EC-370
VENT CONTROL VALVE P0447 0447 — — X EC-377
EVAP SYS PRES SEN P0452 0452 — — X EC-384
EVAP SYS PRES SEN P0453 0453 — — X EC-390
EVAP GROSS LEAK P0455 0455 X X X*5 EC-399
EVAP VERY SML LEAK P0456 0456 X*4 X X*5 EC-412
FUEL LEV SEN SLOSH P0460 0460 — — X EC-428
FUEL LEVEL SENSOR P0461 0461 — — X EC-432
FUEL LEVL SEN/CIRC P0462 0462 — — X EC-434
FUEL LEVL SEN/CIRC P0463 0463 — — X EC-434
VEH SPEED SEN/CIRC*6 P0500 0500 — — X EC-438
ISC SYSTEM/CIRC P0505 0505 — — X EC-443
ISC SYSTEM P0506 0506 — — X EC-450
ISC SYSTEM P0507 0507 — — X EC-459
CLOSED TP SW/CIRC P0510 0510 — — X EC-468
A/T COMM LINE P0600 0600 — — — EC-476
ECM P0605 0605 — — X EC-479
PNP SW/CIRC P0705 0705 — — X AT-99
EC-84
Page 85
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
Items
(CONSULT-II screen terms)
ATF TEMP SEN/CIRC P0710 0710 — — X AT-105
VEH SPD SEN/CIR AT*6 P0720 0720 — — X AT-111
ENGINE SPEED SIG P0725 0725 — — X AT-116
A/T 1ST GR FNCTN P0731 0731 — — X AT-120
A/T 2ND GR FNCTN P0732 0732 — — X AT-126
A/T 3RD GR FNCTN P0733 0733 — — X AT-132
A/T 4TH GR FNCTN P0734 0734 — — X AT-138
TCC SOLENOID/CIRC P0740 0740 — — X AT-148
A/T TCC S/V FNCTN P0744 0744 — — X AT-153
L/PRESS SOL/CIRC P0745 0745 — — X AT-162
SFT SOL A/CIRC*7 P0750 0750 — — X AT-168
SFT SOL B/CIRC*7 P0755 0755 — — X AT-172
MAF SENSOR*7 P1102 1102 — — X EC-481
INT/V TIM V/CIR-B1 P1111 1111 — — X EC-487
CONSULT-II
GST*2
DTC*1
ECM*3
SRT code
Test value/
Testlimit
1st trip DTC*1
Reference
page
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SWIRL CONT SOL/V P1130 1130 — — X EC-493
SWIRL CONT SOL/V P1131 1131 — — X EC-516
INT/V TIM V/CIR-B2 P1136 1136 — — X EC-487
INTK TIM S/CIRC-B1 P1140 1140 — — X EC-522
HO2S1 (B1) P1143 1143 X X X*5 EC-531
HO2S1 (B1) P1144 1144 X X X*5 EC-539
INTK TIM S/CIRC-B2 P1145 1145 — — X EC-522
HO2S2 (B1) P1146 1146 X X X*5 EC-547
HO2S2 (B1) P1147 1147 X X X*5 EC-557
CLOSED LOOP-B1 P1148 1148 — — X EC-567
HO2S1 (B2) P1163 1163 X X X*5 EC-531
HO2S1 (B2) P1164 1164 X X X*5 EC-539
SWL CON VC SW/CIRC P1165 1165 — — X EC-569
HO2S2 (B2) P1166 1166 X X X*5 EC-547
HO2S2 (B2) P1167 1167 X X X*5 EC-557
CLOSED LOOP-B2 P1168 1168 — — X EC-567
ENG OVER TEMP P1217 1217 — — X EC-575
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CKP SEN (REF)/CIRC P1335 1335 — — X EC-580
CKP SENSOR (COG) P1336 1336 — — X EC-586
PURG VOLUME CONT/V P1444 1444 — — X EC-594
VENT CONTROL VALVE P1446 1446 — — X EC-606
VENT CONTROL VALVE P1448 1448 — — X EC-614
EC-85
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Page 86
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
Items
(CONSULT-II screen terms)
EVAP VERY SML LEAK P1456 1456 X X X*5 EC-623
FUEL LEVL SEN/CIRC P1464 1464 — — X EC-639
VC/V BYPASS/V P1490 1490 — — X EC-642
VC CUT/V BYPASS/V P1491 1491 — — X EC-648
A/T DIAG COMM LINE P1605 1605 — — X EC-660
NATS MALFUNCTION P1610-P1615 1610-1615 — — X EL-385
TP SEN/CIRC A/T*3 P1705 1705 — — X AT-176
P-N POS SW/CIRCUIT P1706 1706 — — X EC-661
O/R CLTCH SOL/CIRC P1760 1760 — — X AT-185
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: SRT code will not be set if the self-diagnostic result is NG.
*5: These are not displayed with GST.
*6: When the fail-safe operations for both self-diagnoses occur at the same time, the MIL illuminates.
*7: When the fail-safe operation occurs, the MIL illuminates.
NOTE:
Regarding R50 models, “-B1” indicates bank 1 and “-B2” indicates bank 2.
CONSULT-II
GST*2
DTC*1
ECM*3
SRT code
Test value/
Testlimit
1st trip DTC*1
Reference
page
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC ( With CONSULT-II)
NAEC0031S06
NAEC0031S0601
NOTE:
If the DTC is not for A/T related items (see EC-8), 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.)
I 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).
EC-86
Page 87
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
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SEF823YA
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).
How to Erase DTC ( With GST)
NOTE:
If the DTC is not for A/T related items (see EC-8), 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 “SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)” in AT section titled “TROUBLE
DIAGNOSIS”, “Self-diagnosis”. (The engine warm-up step can be skipped when performing the diagnosis
only to erase the DTC.)
3. Select Mode 4 with GST (Generic Scan Tool).
The emission related diagnostic information in the ECM can be erased by selecting Mode 4 with GST.
I If the battery is disconnected, the emission-related diagnostic information will be lost after approx.
24 hours.
I The following data are cleared when the ECM memory is erased.
1) Diagnostic trouble codes
2) 1st trip diagnostic trouble codes
3) Freeze frame data
4) 1st trip freeze frame data
5) System readiness test (SRT) codes
6) Test values
7) Others
NAEC0031S0602
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EC-87
Page 88
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Emission-related Diagnostic Information (Cont’d)
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.
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM — NATS)
SEF515Y
NAEC0031S08
I If the security indicator lights up with the ignition switch in the “ON” position or “NATS MALFUNC-
TION” is displayed on “SELF-DIAG RESULTS” screen, perform self-diagnostic results mode with
CONSULT-II using NATS program card. Refer to EL-385, “NVIS (Nissan Vehicle Immobilizer System
— NATS)”.
I Confirm no self-diagnostic results of NVIS (NATS) is displayed before touching “ERASE” in “SELF-
DIAG RESULTS” mode with CONSULT-II.
I When replacing ECM, initialization of NVIS (NATS) system and registration of all NVIS (NATS) igni-
tion 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 NVIS (NATS)
initialization and NVIS (NATS) ignition key ID registration, refer to CONSULT-II operation manual,
IVIS/NVIS.
Malfunction Indicator Lamp (MIL)
DESCRIPTION
SEF217U
The MIL is located on the instrument panel.
1. The MIL will light up when the ignition switch is turned ON without the engine running. This is a bulb check.
I If the MIL does not light up, refer to EL-136, “WARNING LAMPS” or see EC-720.
2. When the engine is started, the MIL should 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 four functions.
NAEC0032
NAEC0032S01
EC-88
Page 89
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL) (Cont’d)
Diagnostic Test
Mode
Mode I Ignition switch in
Mode II Ignition switch in
KEY and ENG.
Status
“ON” position
Engine stopped
Engine running
“ON” position
Engine stopped
Function Explanation of Function
BULB CHECK This function checks the MIL bulb for damage (blown,
open circuit, etc.).
If the MIL does not come on, check MIL circuit.
MALFUNCTION
WARNING
SELF-DIAGNOSTIC RESULTS This function allows DTCs and 1st trip DTCs to be read.
This is a usual driving condition. When a malfunction is
detected twice in two consecutive driving cycles (two trip
detection logic), the MIL will light up to inform the driver
that a malfunction has been detected.
The following malfunctions will light up or blink the MIL
in the 1st trip.
I Coolant overtemperature enrichment protection
I “Misfire (Possible three way catalyst damage)”
I “Closed loop control”
I Fail-safe mode
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Engine running
MIL Flashing without DTC
HEATED OXYGEN SENSOR 1
MONITOR
This function allows the fuel mixture condition (lean or
rich), monitored by heated oxygen sensor 1, to be read.
NAEC0032S0102
If the ECM is in Diagnostic Test Mode II, MIL may flash when engine is running. In this case, check ECM
diagnostic test mode. How to Switch Diagnostic Test Mode.
How to switch the diagnostic test (function) modes, and details of the above functions are described later.How
to Switch Diagnostic Test Mode.
The following emission-related diagnostic information is cleared when the ECM memory is erased.
1. Diagnostic trouble codes
2. 1st trip diagnostic trouble codes
3. Freeze frame data
4. 1st trip freeze frame data
5. System readiness test (SRT) codes
6. Test values
7. Others
How to Switch Diagnostic Test Mode
NAEC0032S07
NOTE:
I It is better to count the time accurately with a clock.
I It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.
I Always ECM returns to Diagnostic Test Mode I after ignition switch is turned “OFF”.
How to Set Diagnostic Test Mode II (Self-diagnostic Results)
NAEC0032S0701
1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following procedure quickly five times within 5 seconds.
1) Fully depress the accelerator pedal.
2) Fully release the accelerator pedal.
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EC-89
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL) (Cont’d)
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts
blinking.
4. Fully release the accelerator pedal.
ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).
PBIB0092E
How to Set Diagnostic Test Mode II (Heated Oxygen Sensor 1 Monitor)
NAEC0032S0702
1. Set the ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to How to Set Diagnostic Test Mode
II (Self-diagnostic Results).
2. Start Engine.
ECM has entered to Diagnostic Test Mode II (Heated oxygen sensor 1 monitor).
ECM will start heated oxygen sensor 1 monitoring from the bank 1 sensor.
How to Set Diagnostic Switch Monitored Sensor from Bank 1 to Bank 2 or Vice versa
NAEC0032S0703
1. Fully depress the accelerator pedal quickly and then release it immediately.
2. Make sure that monitoring sensor has changed by MIL blinking as follows.
PBIB0093E
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
NAEC0032S0704
1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to How to Set Diagnostic Test Mode
II (Self-diagnostic Results).
2. Fully depress the accelerator pedal and keep it for more than 10 seconds. The emission-related diagnostic information has been erased from the backup memory in the ECM.
3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.
Diagnostic Test Mode I — Bulb Check
NAEC0032S03
Inthis mode, the MIL on theinstrument panel should stay ON.If it remains OFF,check the bulb. Refer toEL-136,
“WARNING LAMPS” or see EC-720.
Diagnostic Test Mode I — Malfunction Warning
MIL Condition
ON When the malfunction is detected or the ECM’s CPU is malfunctioning.
OFF No malfunction.
I These DTC numbers are clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS).
NAEC0032S04
EC-90
Page 91
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL) (Cont’d)
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.
The DTC and 1st trip DTC are displayed at the same time. If the MIL does not illuminate in diagnostic test
mode I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the
MIL illuminates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes
are displayed, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These
unidentified codes can be identified by using the CONSULT-II or GST. A DTC will be used as an example for
how to read a code.
NAEC0032S08
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SEF952W
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 length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds
consisting of an ON (0.6-second) - 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 trouble code to another occurs at an interval of 1.8-second OFF.
In this way, all the detected malfunctions are classified by their DTC numbers. The DTC “0000” refers to no
malfunction. (See “TROUBLE DIAGNOSIS — INDEX”, EC-8.)
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to How
to Switch Diagnostic Test Mode.
I If the battery is disconnected, the DTC will be lost from the backup memory after approx 24 hours.
I Be careful not to erase the stored memory before starting trouble diagnoses.
Diagnostic Test Mode II — Heated Oxygen Sensor 1 Monitor
In this mode, the MIL displays the condition of the fuel mixture (lean or rich) which is monitored by the heated
oxygen sensor 1.
MIL Fuel mixture condition in the exhaust gas Air fuel ratio feedback control condition
ON Lean
Closed loop system
OFF Rich
*Remains ON or OFF Any condition Open loop system
NAEC0032S0801
NAEC0032S09
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*: Maintains conditions just before switching to open loop.
To check the heated oxygen sensor 1 function, start engine in the Diagnostic Test Mode II and warm it up until
engine coolant temperature indicator points to the middle of the gauge.
Next run engine at about 2,000 rpm for about 2 minutes under no-load conditions. Then make sure that the
MIL comes ON more than 5 times within 10 seconds with engine running at 2,000 rpm under no-load.
EC-91
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Page 92
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD System Operation Chart
OBD System Operation Chart
RELATIONSHIP BETWEEN MIL, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMS
NAEC0033
NAEC0033S01
I When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are
stored in the ECM memory.
I When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are
stored in the ECM memory, and the MIL will come on. For details, refer to “Two Trip Detection Logic” on
EC-72.
I The MIL will go off after the vehicle is driven 3 times with no malfunction. The drive is counted only when
the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting,
the counter will reset.
I The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A)
without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel
Injection System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times (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.
I 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) 1 (pattern C), *1 1 (pattern C), *1 1 (pattern B)
80 (pattern C) 80 (pattern C) 40 (pattern A)
NAEC0033S02
1st Trip Freeze Frame Data
(clear)
For details about patterns “B” and “C” under “Fuel Injection System” and “Misfire”, see EC-94.
For details about patterns “A” and “B” under “Other”, see EC-96.
*1: Clear timing is at the moment OK is detected.
*2: Clear timing is when the same malfunction is detected in the 2nd trip.
*1, *2 *1, *2 1 (pattern B)
EC-92
Page 93
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD System Operation Chart (Cont’d)
RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS FOR
“MISFIRE” <EXHAUST QUALITY DETERIORATION>, “FUEL INJECTION SYSTEM”
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=NAEC0033S03
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*1: When the same malfunction is
detected in two consecutive trips,
MIL will light up.
*2: MIL will go off after vehicle is
driven 3 times (pattern B) without
any malfunctions.
*3: When the same malfunction is
detected in two consecutive trips,
the DTC and the freeze frame
data will be stored in ECM.
*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
ECM.)
*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.
*6: The 1st trip DTC and the 1st trip
SEF392S
freeze frame data will be cleared
at the moment OK is detected.
*7: When the same malfunction is
detected in the 2nd trip, the 1st
trip freeze frame data will be
cleared.
*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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EC-93
Page 94
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD System Operation Chart (Cont’d)
EXPLANATION FOR DRIVING PATTERNS FOR “MISFIRE <EXHAUST QUALITY
DETERIORATION>”, “FUEL INJECTION SYSTEM”
<Driving Pattern B>
Driving pattern B means the vehicle operation as follows:
All components and systems should be monitored at least once by the OBD system.
I The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
I The B counter will be counted up when driving pattern B is satisfied without any malfunction.
I The MIL will go off when the B counter reaches 3. (*2 in “OBD SYSTEM OPERATION CHART”)
NAEC0033S04
NAEC0033S0401
<Driving Pattern C>
NAEC0033S0402
Driving pattern C means the vehicle operation as follows:
1) The following conditions should be satisfied at the same time:
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:
I When the freeze frame data shows lower than 70°C (158°F), “T” should be lower than 70°C (158°F).
I When the freeze frame data shows higher than or equal to 70°C (158°F), “T” should be higher than or
equal 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 temperature: 80°C (176°F)
To be satisfied with driving pattern C, the vehicle should run under the following conditions:
Engine speed: 475 - 1,225 rpm, Calculated load value: 27 - 33%, Engine coolant temperature: more than 70°C
(158°F)
I The C counter will be cleared when the malfunction is detected regardless of (1).
I The C counter will be counted up when (1) is satisfied without the same malfunction.
I The DTC will not be displayed after C counter reaches 80.
I The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC
is stored in ECM.
EC-94
Page 95
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD System Operation Chart (Cont’d)
RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPT
FOR “MISFIRE <EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”
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NAEC0033S05
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*1: When the same malfunction is
detected in two consecutive trips,
MIL will light up.
*2: MIL will go off after vehicle is
driven 3 times (pattern B) without
any malfunctions.
*3: When the same malfunction is
detected in two consecutive trips,
the DTC and the freeze frame
data will be stored in ECM.
*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.)
*5: When a malfunction is detected
for the first time, the 1st trip DTC
SEF393S
and the 1st trip 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.
*7: When the same malfunction is
detected in the 2nd trip, the 1st
trip freeze frame data will be
cleared.
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EC-95
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Page 96
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD System Operation Chart (Cont’d)
EXPLANATION FOR DRIVING PATTERNS EXCEPT FOR “MISFIRE <EXHAUST QUALITY
DETERIORATION>”, “FUEL INJECTION SYSTEM”
<Driving Pattern A>
NAEC0033S0601
NAEC0033S06
AEC574
I The A counter will be cleared when the malfunction is detected regardless of (1) - (4).
I The A counter will be counted up when (1) - (4) are satisfied without the same malfunction.
I The DTC will not be displayed after the A counter reaches 40.
<Driving Pattern B>
NAEC0033S0602
Driving pattern B means the vehicle operation as follows:
All components and systems should be monitored at least once by the OBD system.
I The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
I The B counter will be counted up when driving pattern B is satisfied without any malfunctions.
I The MIL will go off when the B counter reaches 3 (*2 in “OBD System Operation Chart”, EC-92).
EC-96
Page 97
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II
SEF941Y
MBIB0233E
CONSULT-II
CONSULT-II INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect CONSULT-II and “CONSULT-II CONVERTER” to
data link connector,which is located under LH dash panel near
the fuse box cover.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “ENGINE”.
If “ENGINE” is not indicated, go to GI-40, “CONSULT-II Data
Link Connector (DLC) Circuit”.
=NAEC0034
NAEC0034S01
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SEF948Y
SEF824Y
6. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation
Manual.
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EC-97
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CONSULT-II (Cont’d)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
ENGINE CONTROL COMPONENT PARTS/CONTROL
SYSTEMS APPLICATION
DIAGNOSTIC TEST MODE
NAEC0034S02
SELF-DIAGNOSTIC
Item
Crankshaft position sensor
(POS)
Crankshaft position sensor (REF) X X X
Mass air flow sensor X X X
Engine coolant temperature sen-
sor
Heated oxygen sensor 1 X X X X X
Heated oxygen sensor 2 X X X X X
Vehicle speed sensor XXXX
Throttle position sensor X X X
Fuel tank temperature sensor X X X X
EVAP control system pressure
sensor
Absolute pressure sensor X X X
WORK
SUP-
PORT
RESULTS
FREEZE
DTC*1
FRAME
DATA*2
XXXX
XXXXX
XXX
DATA
MONI-
TOR
DATA
MONI-
TOR
(SPEC)
ACTIVE
TEST
DTC & SRT
CONFIRMATION
DTC
SRT
STATUS
WORK
SUP-
PORT
Intake air temperature sensor X X X
Knock sensor X
Ignition switch (start signal) X X
INPUT
Closed throttle position switch X X X
Closed throttle position switch
(throttle position sensor signal)
Air conditioner switch X X
ENGINE CONTROL COMPONENT PARTS
Park/neutral position (PNP)
switch
Power steering oil pressure
switch
Battery voltage X X
Ambient air temperature switch X X
Load signal X X
Swirl control valve control
vacuum check switch
Fuel level sensor X X X
Intake valve timing control posi-
tion sensor
XXX
XXX
XXX
XX
XX
EC-98
Page 99
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
DIAGNOSTIC TEST MODE
SELF-DIAGNOSTIC
Item
Injectors X X X
Power transistor (Ignition timing)
IACV-AAC valve X X X X
EVAP canister purge volume
control solenoid valve
Air conditioner relay X X
Fuel pump relay X X X X
Heated oxygen sensor 1 heater X X X X
Heated oxygen sensor 2 heater X X X X
OUTPUT
EVAP canister vent control valve X X X X
Vacuum cut valve bypass valve X X X X X
Swirl control valve control sole-
noid valve
ENGINE CONTROL COMPONENT PARTS
VIAS control solenoid valve X X X
Intake valve timing control sole-
noid valve
Calculated load value X X X
WORK
SUP-
PORT
RESULTS
FREEZE
DTC*1
(Ignition
signal)
FRAME
DATA*2
X
X XXX X
X XXX
X XXX
DATA
MONI-
TOR
XXX
DATA
MONI-
TOR
(SPEC)
ACTIVE
TEST
CONFIRMATION
STATUS
DTC & SRT
SRT
DTC
WORK
SUP-
PORT
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X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-74.
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EC-99
Page 100
CONSULT-II (Cont’d)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
FUNCTION
Diagnostic test mode Function
WORK SUPPORT
SELF-DIAG RESULTS
DATA MONITOR Input/Output data in the ECM can be read.
DATA MONITOR (SPEC)
ACTIVE TEST
FUNCTION TEST
DTC & SRT CONFIRMATION
ECM PART NUMBER ECM part number can be read.
*1 The following emission-related diagnostic information is cleared when the ECM memory is erased.
1) Diagnostic trouble codes
2) 1st trip diagnostic trouble codes
3) Freeze frame data
4) 1st trip freeze frame data
5) System readiness test (SRT) codes
6) Test values
7) Others
This mode enables a technician to adjust some devices faster and more accurately by following the
indications on the CONSULT-II unit.
Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame
data can be read and erased quickly.*1
Input/Output specification of the basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.
Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.
Conducted by CONSULT-II instead of a technician to determine whether each system is “OK” or
“NG”.
The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
=NAEC0034S03
EC-100
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