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ENGINE CONTROL SYSTEM
B ENGINE
SECTION
EC
EC
ENGINE CONTROL SYSTEM
C
D
E
CONTENTS
F
APPLICATION NOTICE ........................................... 21
How to Check Vehicle Type .................................. 21
Emission-related Diagnostic Information ............... 48
Malfunction Indicator (MI) ...................................... 58
OBD System Operation Chart ............................... 61
BASIC SERVICE PROCEDURE .............................. 66
Basic Inspection .................................................... 66
Idle Speed Check .................................................. 69
Accelerator Pedal Released Position Learning ..... 69
Throttle Valve Closed Position Learning ................ 69
Idle Air Volume Learning ....................................... 69
Fuel Pressure Check ............................................. 71
TROUBLE DIAGNOSIS ........................................... 74
Trouble Diagnosis Introduction .............................. 74
DTC Inspection Priority Chart ................................ 80
Fail-Safe Chart ...................................................... 81
Symptom Matrix Chart ........................................... 82
Engine Control Component Parts Location ........... 86
Vacuum Hose Drawing .......................................... 92
Circuit Diagram ...................................................... 93
ECM Harness Connector Terminal Layout ............ 95
ECM Terminals and Reference Value .................... 95
CONSULT-II Function (ENGINE) ..........................102
Generic Scan Tool (GST) Function .......................111
CONSULT-IIReferenceValueinDataMonitorMode
.112
CR (WITH EURO-OBD)
G
INDEX FOR DTC ..................................................... 22
DTC No. Index ...................................................... 22
Alphabetical Index ................................................. 24
PRECAUTIONS ....................................................... 26
Precautions for Supplemental Restraint System
(SRS)“AIRBAG”and“SEATBELTPRE-TEN-
SIONER” ............................................................... 26
Maintenance Information ....................................... 26
PrecautionsforProcedureswithoutCowl Top Cove... 26
On Board Diagnostic (OBD) System of Engine ..... 26
Precaution ............................................................. 27
PREPARATION ........................................................ 31
Special Service Tools ............................................ 31
Commercial Service Tools ..................................... 32
ENGINE CONTROL SYSTEM ................................. 33
System Diagram .................................................... 33
Multiport Fuel Injection (MFI) System ................... 34
Electronic Ignition (EI) System .............................. 36
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................... 36
AIR CONDITIONING CUT CONTROL .................... 38
Input/Output Signal Chart ...................................... 38
CAN COMMUNICATION ......................................... 39
System Description ............................................... 39
EVAPORATIVE EMISSION SYSTEM ...................... 40
Description ............................................................ 40
Component Inspection .......................................... 43
NATS (NISSAN ANTI-THEFT SYSTEM) ................. 44
Description ............................................................ 44
POSITIVE CRANKCASE VENTILATION ................ 45
Description ............................................................ 45
Component Inspection .......................................... 45
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 47
Introduction ........................................................... 47
Two Trip Detection Logic ....................................... 47
H
I
J
K
L
M
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................115
TROUBLE DIAGNOSIS - SPECIFICATION VALUE. 117
Description ............................................................117
Testing Condition ..................................................117
Inspection Procedure ............................................117
Diagnostic Procedure ...........................................118
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................127
Description ............................................................127
Diagnostic Procedure ...........................................127
POWER SUPPLY AND GROUND CIRCUIT ...........128
Wiring Diagram .....................................................128
Diagnostic Procedure ...........................................129
Ground Inspection ................................................133
EC-1
DTC U1001 CAN COMMUNICATION LINE ...........134
Description ............................................................134
On Board Diagnosis Logic ....................................134
DTC Confirmation Procedure ...............................134
Wiring Diagram .....................................................135
Diagnostic Procedure ...........................................136
DTC U1010 CAN COMMUNICATION .....................137
Description ............................................................137
On Board Diagnosis Logic ....................................137
DTC Confirmation Procedure ...............................137
Diagnostic Procedure ...........................................138
DTC P0011 IVT CONTROL .....................................139
Description ............................................................139
CONSULT-IIReferenceValueinDataMonitorMode
.139
On Board Diagnosis Logic ....................................140
DTC Confirmation Procedure ...............................140
Diagnostic Procedure ...........................................141
Component Inspection ..........................................142
Removal and Installation .....................................142
DTC P0031, P0032 HO2S1 HEATER .....................143
Description ............................................................143
CONSULT-IIReferenceValueinDataMonitorMode
.143
On Board Diagnosis Logic ....................................143
DTC Confirmation Procedure ...............................144
Wiring Diagram .....................................................145
Diagnostic Procedure ...........................................146
Component Inspection ..........................................148
Removal and Installation .....................................148
DTC P0037, P0038 HO2S2 HEATER .....................149
Description ............................................................149
CONSULT-IIReferenceValueinDataMonitorMode
.149
On Board Diagnosis Logic ....................................149
DTC Confirmation Procedure ...............................149
Wiring Diagram .....................................................151
Diagnostic Procedure ...........................................152
Component Inspection ..........................................154
Removal and Installation .....................................154
DTC P0107, P0108 MANIFOLD ABSOLUTE PRES-
SURE SENSOR .......................................................155
Component Description ........................................155
On Board Diagnosis Logic ....................................155
DTC Confirmation Procedure ...............................155
Wiring Diagram .....................................................156
Diagnostic Procedure ...........................................157
Component Inspection ..........................................159
Removal and Installation .....................................160
DTC P0112, P0113 IAT SENSOR ...........................161
Component Description ........................................161
On Board Diagnosis Logic ....................................161
DTC Confirmation Procedure ...............................162
Wiring Diagram .....................................................163
Diagnostic Procedure ...........................................164
Component Inspection ..........................................165
Removal and Installation .....................................165
DTC P0117, P0118 ECT SENSOR ..........................166
Component Description ........................................166
On Board Diagnosis Logic ...................................166
DTC Confirmation Procedure ...............................167
Wiring Diagram ....................................................168
Diagnostic Procedure ...........................................169
Component Inspection .........................................170
Removal and Installation ......................................170
DTC P0122, P0123 TP SENSOR ...........................171
Component Description .......................................171
CONSULT-IIReferenceValueinDataMonitorMode
.171
On Board Diagnosis Logic ...................................171
DTC Confirmation Procedure ...............................172
Wiring Diagram ....................................................173
Diagnostic Procedure ...........................................174
Component Inspection .........................................177
Removal and Installation ......................................177
DTC P0132 HO2S1 ................................................178
Component Description .......................................178
CONSULT-IIReferenceValueinDataMonitorMode
.178
On Board Diagnosis Logic ...................................178
DTC Confirmation Procedure ...............................179
Wiring Diagram ....................................................180
Diagnostic Procedure ...........................................181
Component Inspection .........................................183
Removal and Installation ......................................184
DTC P0133 HO2S1 ................................................185
Component Description .......................................185
CONSULT-IIReferenceValueinDataMonitorMode
.185
On Board Diagnosis Logic ...................................185
DTC Confirmation Procedure ...............................186
Overall Function Check ........................................187
Wiring Diagram ....................................................188
Diagnostic Procedure ...........................................189
Component Inspection .........................................193
Removal and Installation ......................................194
DTC P0134 HO2S1 ................................................195
Component Description .......................................195
CONSULT-IIReferenceValueinDataMonitorMode
.195
On Board Diagnosis Logic ...................................195
DTC Confirmation Procedure ...............................196
Overall Function Check ........................................197
Wiring Diagram ....................................................198
Diagnostic Procedure ...........................................199
Component Inspection .........................................201
Removal and Installation ......................................202
DTC P0138 HO2S2 ................................................203
Component Description .......................................203
CONSULT-IIReferenceValueinDataMonitorMode
.203
On Board Diagnosis Logic ...................................203
DTC Confirmation Procedure ...............................204
Wiring Diagram ....................................................205
Diagnostic Procedure ...........................................206
Component Inspection .........................................208
Removal and Installation ......................................209
EC-2
DTC P0139 HO2S2 ................................................ 210
Component Description ....................................... 210
CONSULT-IIReferenceValueinDataMonitorMode
. 210
On Board Diagnosis Logic .................................. 210
DTC Confirmation Procedure ...............................211
Overall Function Check ....................................... 212
Wiring Diagram ................................................... 213
Diagnostic Procedure .......................................... 214
Component Inspection ........................................ 216
Removal and Installation ..................................... 217
DTC P0171 FUELINJECTIONSYSTEM FUNCTION. 218
On Board Diagnosis Logic .................................. 218
DTC Confirmation Procedure .............................. 218
Wiring Diagram ................................................... 220
Diagnostic Procedure .......................................... 222
DTC P0172 FUELINJECTIONSYSTEM FUNCTION. 226
On Board Diagnosis Logic .................................. 226
DTC Confirmation Procedure .............................. 226
Wiring Diagram ................................................... 228
Diagnostic Procedure .......................................... 230
DTC P0222, P0223 TP SENSOR .......................... 233
Component Description ....................................... 233
CONSULT-IIReferenceValueinDataMonitorMode
. 233
On Board Diagnosis Logic .................................. 233
DTC Confirmation Procedure .............................. 234
Wiring Diagram ................................................... 235
Diagnostic Procedure .......................................... 236
Component Inspection ........................................ 239
Removal and Installation ..................................... 239
DTC P0300 - P0304 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 4 CYLINDER MISFIRE .................... 240
On Board Diagnosis Logic .................................. 240
DTC Confirmation Procedure .............................. 240
Diagnostic Procedure .......................................... 241
DTC P0327, P0328 KS .......................................... 246
Component Description ....................................... 246
On Board Diagnosis Logic .................................. 246
DTC Confirmation Procedure .............................. 246
Wiring Diagram ................................................... 247
Diagnostic Procedure .......................................... 248
Component Inspection ........................................ 249
Removal and Installation ..................................... 249
DTC P0335 CKP SENSOR (POS) ......................... 250
Component Description ....................................... 250
CONSULT-IIReferenceValueinDataMonitorMode
. 250
On Board Diagnosis Logic .................................. 250
DTC Confirmation Procedure .............................. 250
Wiring Diagram ................................................... 252
Diagnostic Procedure .......................................... 254
Component Inspection ........................................ 256
Removal and Installation ..................................... 256
DTC P0340 CMP SENSOR (PHASE) .................... 257
Component Description ....................................... 257
On Board Diagnosis Logic .................................. 257
DTC Confirmation Procedure .............................. 257
Wiring Diagram ................................................... 259
Diagnostic Procedure ...........................................260
Component Inspection ..........................................263
Removal and Installation ......................................263
DTC P0420 THREE WAY CATALYST FUNCTION . 264
On Board Diagnosis Logic ....................................264
DTC Confirmation Procedure ...............................264
Overall Function Check ........................................265
Diagnostic Procedure ...........................................266
DTC P0444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ...............................270
Description ............................................................270
CONSULT-IIReferenceValueinDataMonitorMode
.270
On Board Diagnosis Logic ....................................270
DTC Confirmation Procedure ...............................271
Wiring Diagram .....................................................272
Diagnostic Procedure ...........................................274
Component Inspection ..........................................275
Removal and Installation ......................................276
DTC P0500 VSS ......................................................277
Description ............................................................277
On Board Diagnosis Logic ....................................277
DTC Confirmation Procedure ...............................277
Overall Function Check ........................................278
Diagnostic Procedure ...........................................278
DTC P0605 ECM .....................................................279
Component Description ........................................279
On Board Diagnosis Logic ....................................279
DTC Confirmation Procedure ...............................279
Diagnostic Procedure ...........................................280
DTC P1065 ECM POWER SUPPLY .......................282
Component Description ........................................282
On Board Diagnosis Logic ....................................282
DTC Confirmation Procedure ...............................282
Wiring Diagram .....................................................283
Diagnostic Procedure ...........................................284
DTC P1111 IVT CONTROL SOLENOID VALVE .....286
Component Description ........................................286
CONSULT-IIReferenceValueinDataMonitorMode
.286
On Board Diagnosis Logic ....................................286
DTC Confirmation Procedure ...............................286
Wiring Diagram .....................................................287
Diagnostic Procedure ...........................................289
Component Inspection ..........................................290
Removal and Installation ......................................290
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR .............................................................291
Component Description ........................................291
On Board Diagnosis Logic ....................................291
DTC Confirmation Procedure ...............................291
Diagnostic Procedure ...........................................292
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION ..............................................................293
Description ............................................................293
On Board Diagnosis Logic ....................................293
DTC Confirmation Procedure ...............................293
Wiring Diagram .....................................................294
Diagnostic Procedure ...........................................295
A
EC
C
D
E
F
G
H
I
J
K
L
M
EC-3
Component Inspection ..........................................298
Removal and Installation .....................................298
DTC P1124, P1126 THROTTLE CONTROL MOTOR
RELAY .....................................................................299
Component Description ........................................299
CONSULT-IIReferenceValueinDataMonitorMode
.299
On Board Diagnosis Logic ....................................299
DTC Confirmation Procedure ...............................299
Wiring Diagram .....................................................301
Diagnostic Procedure ...........................................302
DTC P1128 THROTTLE CONTROL MOTOR ........305
Component Description ........................................305
On Board Diagnosis Logic ....................................305
DTC Confirmation Procedure ...............................305
Wiring Diagram .....................................................306
Diagnostic Procedure ...........................................307
Component Inspection ..........................................308
Removal and Installation .....................................309
DTC P1143 HO2S1 .................................................310
Component Description ........................................310
CONSULT-IIReferenceValueinDataMonitorMode
.310
On Board Diagnosis Logic ....................................310
DTC Confirmation Procedure ...............................311
Overall Function Check ........................................312
Diagnostic Procedure ...........................................312
Component Inspection ..........................................314
Removal and Installation .....................................315
DTC P1144 HO2S1 .................................................316
Component Description ........................................316
CONSULT-IIReferenceValueinDataMonitorMode
.316
On Board Diagnosis Logic ....................................316
DTC Confirmation Procedure ...............................317
Overall Function Check ........................................318
Diagnostic Procedure ...........................................318
Component Inspection ..........................................320
Removal and Installation .....................................321
DTC P1146 HO2S2 .................................................322
Component Description ........................................322
CONSULT-IIReferenceValueinDataMonitorMode
.322
On Board Diagnosis Logic ....................................322
DTC Confirmation Procedure ...............................322
Overall Function Check ........................................324
Wiring Diagram .....................................................325
Diagnostic Procedure ...........................................326
Component Inspection ..........................................328
Removal and Installation .....................................329
DTC P1147 HO2S2 .................................................330
Component Description ........................................330
CONSULT-IIReferenceValueinDataMonitorMode
.330
On Board Diagnosis Logic ....................................330
DTC Confirmation Procedure ...............................331
Overall Function Check ........................................332
Wiring Diagram .....................................................333
Diagnostic Procedure ...........................................334
Component Inspection .........................................336
Removal and Installation ......................................337
DTC P1171 INTAKE ERROR .................................338
On Board Diagnosis Logic ...................................338
DTC Confirmation Procedure ...............................338
Wiring Diagram ....................................................339
Diagnostic Procedure ...........................................340
DTC P1211 TCS CONTROL UNIT .........................343
Description ...........................................................343
On Board Diagnosis Logic ...................................343
DTC Confirmation Procedure ...............................343
Diagnostic Procedure ...........................................343
DTC P1212 TCS COMMUNICATION LINE ............344
Description ...........................................................344
On Board Diagnosis Logic ...................................344
DTC Confirmation Procedure ...............................344
Diagnostic Procedure ...........................................344
DTC P1217 ENGINE OVER TEMPERATURE .......345
System Description ..............................................345
CONSULT-IIReferenceValueinDataMonitorMode
.346
On Board Diagnosis Logic ...................................346
Overall Function Check ........................................347
Wiring Diagram ....................................................349
Diagnostic Procedure ...........................................351
Main 12 Causes of Overheating ..........................357
Component Inspection .........................................358
DTC P1225 TP SENSOR .......................................359
Component Description .......................................359
On Board Diagnosis Logic ...................................359
DTC Confirmation Procedure ...............................359
Diagnostic Procedure ...........................................360
Removal and Installation ......................................360
DTC P1226 TP SENSOR .......................................361
Component Description .......................................361
On Board Diagnosis Logic ...................................361
DTC Confirmation Procedure ...............................361
Diagnostic Procedure ...........................................362
Removal and Installation ......................................362
DTC P1229 SENSOR POWER SUPPLY ...............363
On Board Diagnosis Logic ...................................363
DTC Confirmation Procedure ...............................363
Wiring Diagram ....................................................364
Diagnostic Procedure ...........................................368
DTC P1706 PNP SWITCH ......................................371
Component Description .......................................371
CONSULT-IIReferenceValueinDataMonitorMode
.371
On Board Diagnosis Logic ...................................371
DTC Confirmation Procedure ...............................371
Overall Function Check ........................................372
Wiring Diagram ....................................................373
Diagnostic Procedure ...........................................374
DTC P1805 BRAKE SWITCH ................................377
Description ...........................................................377
CONSULT-IIReferenceValueinDataMonitorMode
.377
On Board Diagnosis Logic ...................................377
DTC Confirmation Procedure ...............................377
EC-4
Wiring Diagram ................................................... 379
Diagnostic Procedure .......................................... 380
Component Inspection ........................................ 382
DTC P2122, P2123 APP SENSOR ....................... 383
Component Description ....................................... 383
CONSULT-IIReferenceValueinDataMonitorMode
. 383
On Board Diagnosis Logic .................................. 383
DTC Confirmation Procedure .............................. 384
Wiring Diagram ................................................... 385
Diagnostic Procedure .......................................... 388
Component Inspection ........................................ 390
Removal and Installation ..................................... 391
DTC P2127, P2128 APP SENSOR ....................... 392
Component Description ....................................... 392
CONSULT-IIReferenceValueinDataMonitorMode
. 392
On Board Diagnosis Logic .................................. 392
DTC Confirmation Procedure .............................. 393
Wiring Diagram ................................................... 394
Diagnostic Procedure .......................................... 397
Component Inspection ........................................ 400
Removal and Installation ..................................... 401
DTC P2135 TP SENSOR ....................................... 402
Component Description ....................................... 402
CONSULT-IIReferenceValueinDataMonitorMode
. 402
On Board Diagnosis Logic .................................. 402
DTC Confirmation Procedure .............................. 403
Wiring Diagram ................................................... 404
Diagnostic Procedure .......................................... 405
Component Inspection ........................................ 408
Removal and Installation ..................................... 408
DTC P2138 APP SENSOR .................................... 409
Component Description ....................................... 409
CONSULT-IIReferenceValueinDataMonitorMode
. 409
On Board Diagnosis Logic .................................. 409
DTC Confirmation Procedure .............................. 410
Wiring Diagram ....................................................411
Diagnostic Procedure .......................................... 414
Component Inspection ........................................ 418
Removal and Installation ..................................... 418
ELECTRICAL LOAD SIGNAL ............................... 419
Description .......................................................... 419
CONSULT-IIReferenceValueinDataMonitorMode
. 419
Diagnostic Procedure .......................................... 419
FUEL INJECTOR ................................................... 421
Component Description ....................................... 421
CONSULT-IIReferenceValueinDataMonitorMode
. 421
Wiring Diagram ................................................... 422
Diagnostic Procedure .......................................... 423
Component Inspection ........................................ 426
Removal and Installation ..................................... 426
FUEL PUMP .......................................................... 427
Description .......................................................... 427
CONSULT-IIReferenceValueinDataMonitorMode
.427
Wiring Diagram .....................................................428
Diagnostic Procedure ...........................................429
Component Inspection ..........................................431
Removal and Installation ......................................432
IGNITION SIGNAL ..................................................433
Component Description ........................................433
Wiring Diagram .....................................................434
Diagnostic Procedure ...........................................437
Component Inspection ..........................................441
Removal and Installation ......................................442
REFRIGERANT PRESSURE SENSOR ..................443
Component Description ........................................443
Wiring Diagram .....................................................444
Diagnostic Procedure ...........................................445
Removal and Installation ......................................447
MI & DATA LINK CONNECTORS ...........................448
Wiring Diagram .....................................................448
SERVICE DATA AND SPECIFICATIONS (SDS) ....449
Fuel Pressure .......................................................449
Idle Speed ............................................................449
Calculated Load Value ..........................................449
Manifold Absolute Pressure Sensor .....................449
Intake Air Temperature Sensor .............................449
Engine Coolant Temperature Sensor ...................449
Knock Sensor .......................................................449
Crankshaft Position Sensor (POS) .......................449
Camshaft Position Sensor (PHASE) ....................449
Heated Oxygen Sensor 1 Heater .........................449
Heated Oxygen Sensor 2 Heater .........................449
Intake Valve Timing Control Solenoid Valve .........449
Throttle Control Motor ...........................................450
Fuel Injector ..........................................................450
Fuel Pump ............................................................450
A
EC
C
D
E
F
G
H
I
J
K
CR (WITHOUT EURO-OBD)
INDEX FOR DTC .....................................................451
DTC No. Index ......................................................451
Alphabetical Index ................................................453
PRECAUTIONS ......................................................455
Precautions for Supplemental Restraint System
(SRS)“AIRBAG”and“SEATBELTPRE-TEN-
SIONER” ...............................................................455
Maintenance Information ......................................455
Precautions forProcedureswithout Cowl Top Cove.455
On Board Diagnostic (OBD) System of Engine ....455
Precaution ............................................................456
PREPARATION .......................................................460
Special Service Tools ...........................................460
Commercial Service Tools ....................................461
ENGINE CONTROL SYSTEM ................................462
System Diagram ...................................................462
Multiport Fuel Injection (MFI) System ...................463
Electronic Ignition (EI) System .............................465
Fuel Cut Control (at No Load and High Engine
Speed) ..................................................................465
AIR CONDITIONING CUT CONTROL ....................467
Input/Output Signal Chart .....................................467
L
M
EC-5
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