Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Pathfinder 2008-2009 Approved Nissan Pathfinder 2008 EC
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ENGINE
A
ENGINE CONTROL SYSTEM
SECTION EC EC
C
D
E
CONTENTS
VQ40DE EVAPORATIVE EMISSION SYSTEM ............... 46 F
Description ..............................................................46
.
BASIC INSPECTION .................................. 14
.
INTAKE VALVE TIMING CONTROL ................ 49 G
DIAGNOSIS AND REPAIR WORKFLOW ........14
. Description ..............................................................49
.
Trouble Diagnosis Introduction .............................. 14
.
VARIABLE INDUCTION AIR SYSTEM ............ 50
INSPECTION AND ADJUSTMENT ...................20
. Description ..............................................................50
. H
Basic Inspection ..................................................... 20
. Vacuum Hose Drawing ...........................................52 .
Idle Speed and Ignition Timing Check ................... 24 .
Procedure After Replacing ECM ............................ 25 . ON BOARD DIAGNOSTIC (OBD) SYSTEM .... 53
I
VIN Registration ..................................................... 25
. Introduction .............................................................53
.
Accelerator Pedal Released Position Learning ...... 26 . Two Trip Detection Logic ........................................53 .
Throttle Valve Closed Position Learning ................ 26 . Emission-related Diagnostic Information ................54 .
Idle Air Volume Learning ........................................ 26
. Malfunction Indicator Lamp (MIL) ...........................66 . J
OBD System Operation Chart ................................69 .
FUNCTION DIAGNOSIS ............................. 29
. CONSULT-III Function (ENGINE) ..........................74 .
Generic Scan Tool (GST) Function ........................83 . K
ENGINE CONTROL SYSTEM ...........................29
.
System Diagram ..................................................... 29
. COMPONENT DIAGNOSIS ........................ 85
.
Engine Control Component Parts Location ............ 30 .
TROUBLE DIAGNOSIS - SPECIFICATION L
MULTIPORT FUEL INJECTION SYSTEM ........37
. VALUE ............................................................... 85
System Description ................................................ 37
. Description ..............................................................85
.
Testing Condition ....................................................85
. M
ELECTRIC IGNITION SYSTEM ........................40
. Inspection Procedure ..............................................85 .
System Description ................................................ 40
. Diagnosis Procedure ..............................................85 .
AIR CONDITIONING CUT CONTROL ..............41
. POWER SUPPLY AND GROUND CIRCUIT .... 93 N
Input/Output Signal Chart ....................................... 41
.
Diagnosis Procedure ..............................................93
.
System Description ................................................ 41
.
Ground Inspection ..................................................96
.
AUTOMATIC SPEED CONTROL DEVICE O
U1000, U1001 CAN COMM CIRCUIT ............... 97
(ASCD) ..............................................................42
. Description ..............................................................97
.
System Description ................................................ 42
. On Board Diagnosis Logic ......................................97 .
Component Description .......................................... 43
. P
DTC Confirmation Procedure .................................97 .
CAN COMMUNICATION ...................................44
. Diagnosis Procedure ..............................................97 .
System Description ................................................ 44
. U1010 CONTROL UNIT (CAN) ......................... 98
COOLING FAN CONTROL ...............................45
. Description ..............................................................98
.
Description ............................................................. 45
. On Board Diagnosis Logic ......................................98 .
DTC Confirmation Procedure .................................98 .
EC-1
Diagnosis Procedure ............................................. 98
. P0122, P0123 TP SENSOR ............................. 130
.
Component Description ....................................... 130
.
P0011, P0021 IVT CONTROL .......................... 99
. On Board Diagnosis Logic ................................... 130
.
On Board Diagnosis Logic ..................................... 99
. DTC Confirmation Procedure ............................... 130 .
DTC Confirmation Procedure ................................ 99. Diagnosis Procedure ............................................ 130
.
Diagnosis Procedure ............................................100
. Component Inspection ......................................... 133
.
Component Inspection ..........................................101
.
P0125 ECT SENSOR ...................................... 134
.
P0031, P0032, P0051, P0052 A/F SENSOR 1 Component Description ....................................... 134
.
HEATER .......................................................... 102
. On Board Diagnosis Logic ................................... 134
.
Description ............................................................102
. DTC Confirmation Procedure ............................... 134 .
On Board Diagnosis Logic ....................................102 . Diagnosis Procedure ............................................ 135
.
DTC Confirmation Procedure ...............................102 . Component Inspection ......................................... 135
.
Diagnosis Procedure ............................................102 .
Component Inspection ..........................................104 . P0127 IAT SENSOR ........................................ 137
.
Component Description ....................................... 137
.
P0037, P0038, P0057, P0058 HO2S2 HEAT- On Board Diagnosis Logic ................................... 137
.
ER ................................................................... 105
. DTC Confirmation Procedure ............................... 137 .
Description ............................................................105
. Diagnosis Procedure ............................................ 138
.
On Board Diagnosis Logic ....................................105 . Component Inspection ......................................... 138
.
DTC Confirmation Procedure ...............................105 .
Diagnosis Procedure ............................................106 . P0128 THERMOSTAT FUNCTION ................. 140
.
Component Inspection ..........................................107 . On Board Diagnosis Logic ................................... 140
.
DTC Confirmation Procedure ............................... 140 .
P0075, P0081 IVT CONTROL SOLENOID Diagnosis Procedure ............................................ 140
.
VALVE ............................................................ 109
. Component Inspection ......................................... 140
.
Component Description ........................................109
.
On Board Diagnosis Logic ....................................109
. P0130, P0150 A/F SENSOR 1 ........................ 142
.
DTC Confirmation Procedure ...............................109 . Component Description ....................................... 142
.
Diagnosis Procedure ............................................109
. On Board Diagnosis Logic ................................... 142
.
Component Inspection ..........................................110
. DTC Confirmation Procedure ............................... 142 .
Overall Function Check ........................................ 143
.
P0101 MAF SENSOR ..................................... 112
. Diagnosis Procedure ............................................ 143
.
Component Description ........................................112
.
On Board Diagnosis Logic ....................................112
. P0131, P0151 A/F SENSOR 1 ........................ 146
.
DTC Confirmation Procedure ...............................112 . Component Description ....................................... 146
.
Overall Function Check ........................................113
. On Board Diagnosis Logic ................................... 146
.
Diagnosis Procedure ............................................114
. DTC Confirmation Procedure ............................... 146 .
Component Inspection ..........................................116
. Diagnosis Procedure ............................................ 147
.
P0102, P0103 MAF SENSOR ......................... 118
. P0132, P0152 A/F SENSOR 1 ........................ 150
.
Component Description ........................................118
. Component Description ....................................... 150
.
On Board Diagnosis Logic ....................................118
. On Board Diagnosis Logic ................................... 150
.
DTC Confirmation Procedure ...............................118 . DTC Confirmation Procedure ............................... 150 .
Diagnosis Procedure ............................................119
. Diagnosis Procedure ............................................ 151
.
Component Inspection ..........................................120
.
P0133, P0153 A/F SENSOR 1 ........................ 154
.
P0112, P0113 IAT SENSOR ........................... 123
. Component Description ....................................... 154
.
Component Description ........................................123
. On Board Diagnosis Logic ................................... 154
.
On Board Diagnosis Logic ....................................123
. DTC Confirmation Procedure ............................... 154 .
DTC Confirmation Procedure ...............................123 . Diagnosis Procedure ............................................ 155
.
Diagnosis Procedure ............................................123
.
Component Inspection ..........................................125
.
P0137, P0157 HO2S2 ...................................... 159
.
Component Description ....................................... 159
.
P0117, P0118 ECT SENSOR ......................... 126
. On Board Diagnosis Logic ................................... 159
.
Component Description ........................................126
. DTC Confirmation Procedure ............................... 159 .
On Board Diagnosis Logic ....................................126
. Overall Function Check ........................................ 160
.
DTC Confirmation Procedure ...............................127 . Diagnosis Procedure ............................................ 160
.
Diagnosis Procedure ............................................127
. Component Inspection ......................................... 163
.
Component Inspection ..........................................128
.
P0138, P0158 HO2S2 ...................................... 165
.
EC-2
Component Description ........................................ 165
. P0335 CKP SENSOR (POS) ........................... 211
On Board Diagnosis Logic ................................... 165
. Component Description ........................................ 211
. A
DTC Confirmation Procedure ............................... 166. On Board Diagnosis Logic .................................... 211
.
Overall Function Check ........................................ 166
. DTC Confirmation Procedure ............................... 211.
Diagnosis Procedure ............................................ 167
. Diagnosis Procedure ............................................ 211
. EC
Component Inspection ......................................... 171
. Component Inspection .......................................... 213
.
P0139, P0159 HO2S2 ..................................... 173
. P0340, P0345 CMP SENSOR (PHASE) ......... 215
Component Description ........................................ 173
. Component Description ........................................ 215
. C
On Board Diagnosis Logic ................................... 173
. On Board Diagnosis Logic .................................... 215
.
DTC Confirmation Procedure ............................... 173. DTC Confirmation Procedure ............................... 215.
Overall Function Check ........................................ 174
. Diagnosis Procedure ............................................ 216
. D
Diagnosis Procedure ............................................ 174
. Component Inspection .......................................... 218
.
Component Inspection ......................................... 177
.
P0420, P0430 THREE WAY CATALYST
P0171, P0174 FUEL INJECTION SYSTEM FUNCTION ...................................................... 219 E
FUNCTION ...................................................... 179
. On Board Diagnosis Logic .................................... 219
.
On Board Diagnosis Logic ................................... 179
. DTC Confirmation Procedure ............................... 219.
DTC Confirmation Procedure ............................... 179. Overall Function Check ........................................ 220
. F
Diagnosis Procedure ............................................ 180
. Diagnosis Procedure ............................................ 220
.
P0172, P0175 FUEL INJECTION SYSTEM P0441 EVAP CONTROL SYSTEM ................. 224
G
FUNCTION ...................................................... 185
. System Description ............................................... 224
.
On Board Diagnosis Logic ................................... 185
. On Board Diagnosis Logic .................................... 224
.
DTC Confirmation Procedure ............................... 185. DTC Confirmation Procedure ............................... 224 .
Diagnosis Procedure ............................................ 186
. Overall Function Check ........................................ 225
. H
Diagnosis Procedure ............................................ 225
.
P0181 FTT SENSOR ....................................... 191
. Component Inspection .......................................... 228
.
Component Description ........................................ 191
. I
On Board Diagnosis Logic ................................... 191
. P0442 EVAP CONTROL SYSTEM ................. 229
DTC Confirmation Procedure ............................... 191. On Board Diagnosis Logic .................................... 229
.
Diagnosis Procedure ............................................ 192
. DTC Confirmation Procedure ............................... 230.
Component Inspection ......................................... 193
. Diagnosis Procedure ............................................ 230
. J
Component Inspection .......................................... 235
.
P0182, P0183 FTT SENSOR .......................... 194
.
Component Description ........................................ 194
. P0443 EVAP CANISTER PURGE VOLUME K
On Board Diagnosis Logic ................................... 194
. CONTROL SOLENOID VALVE ...................... 236
DTC Confirmation Procedure ............................... 194. Description ............................................................ 236
.
Diagnosis Procedure ............................................ 194
. On Board Diagnosis Logic .................................... 236 .
L
Component Inspection ......................................... 196
. DTC Confirmation Procedure ............................... 237 .
Diagnosis Procedure ............................................ 237 .
P0222, P0223 TP SENSOR ............................ 197
. Component Inspection .......................................... 240 .
Component Description ........................................ 197
. M
On Board Diagnosis Logic ................................... 197
. P0444, P0445 EVAP CANISTER PURGE
DTC Confirmation Procedure ............................... 197. VOLUME CONTROL SOLENOID VALVE ...... 241
Diagnosis Procedure ............................................ 197
. Description ............................................................ 241
. N
Component Inspection ......................................... 200
. On Board Diagnosis Logic .................................... 241 .
DTC Confirmation Procedure ............................... 242 .
P0300, P0301, P0302, P0303, P0304, P0305, Diagnosis Procedure ............................................ 242 .
P0306, P0307, P0308 MISFIRE ...................... 201
. O
Component Inspection .......................................... 243 .
On Board Diagnosis Logic ................................... 201
.
DTC Confirmation Procedure ............................... 201. P0447 EVAP CANISTER VENT CONTROL
Diagnosis Procedure ............................................ 202
. VALVE ............................................................. 244 P
Component Description ........................................ 244
.
P0327, P0328, P0332, P0333 KS ................... 208
. On Board Diagnosis Logic .................................... 244
.
Component Description ........................................ 208
.
DTC Confirmation Procedure ............................... 244.
On Board Diagnosis Logic ................................... 208
.
Diagnosis Procedure ............................................ 244
.
DTC Confirmation Procedure ............................... 208.
Component Inspection .......................................... 246
.
Diagnosis Procedure ............................................ 208
.
Component Inspection ......................................... 210
.
EC-3
P0448 EVAP CANISTER VENT CONTROL DTC Confirmation Procedure ............................... 284 .
VALVE ............................................................ 248
. Diagnosis Procedure ............................................ 284
.
Component Description ........................................248
.
On Board Diagnosis Logic ....................................248
.
P0500 VSS ....................................................... 286
.
Description ........................................................... 286
.
DTC Confirmation Procedure ...............................248 .
On Board Diagnosis Logic ................................... 286 .
Diagnosis Procedure ............................................249
.
DTC Confirmation Procedure ............................... 286 .
Component Inspection ..........................................250
.
Overall Function Check ........................................ 287 .
P0451 EVAP CONTROL SYSTEM PRES- Diagnosis Procedure ............................................ 287 .
SURE SENSOR .............................................. 253
.
P0506 ISC SYSTEM ........................................ 288
.
Component Description ........................................253
.
Description ........................................................... 288
.
On Board Diagnosis Logic ....................................253
.
On Board Diagnosis Logic ................................... 288 .
DTC Confirmation Procedure ...............................253 .
DTC Confirmation Procedure ............................... 288 .
Diagnosis Procedure ............................................253
.
Diagnosis Procedure ............................................ 288 .
Component Inspection ..........................................254
.
P0507 ISC SYSTEM ........................................ 290
.
P0452 EVAP CONTROL SYSTEM PRES-
Description ........................................................... 290
.
SURE SENSOR .............................................. 256
. On Board Diagnosis Logic ................................... 290 .
Component Description ........................................256
.
DTC Confirmation Procedure ............................... 290 .
On Board Diagnosis Logic ....................................256
. Diagnosis Procedure ............................................ 290 .
DTC Confirmation Procedure ...............................256 .
Diagnosis Procedure ............................................257
. P0550 PSP SENSOR ...................................... 292
.
Component Inspection ..........................................259
. Component Description ....................................... 292
.
On Board Diagnosis Logic ................................... 292
.
P0453 EVAP CONTROL SYSTEM PRES- DTC Confirmation Procedure ............................... 292 .
SURE SENSOR .............................................. 260
. Diagnosis Procedure ............................................ 292
.
Component Description ........................................260
. Component Inspection ......................................... 294
.
On Board Diagnosis Logic ....................................260
.
DTC Confirmation Procedure ...............................260 . P0603 ECM POWER SUPPLY ........................ 295
.
Diagnosis Procedure ............................................261
. Component Description ....................................... 295
.
Component Inspection ..........................................264
. On Board Diagnosis Logic ................................... 295
.
DTC Confirmation Procedure ............................... 295 .
P0455 EVAP CONTROL SYSTEM ................. 265
. Diagnosis Procedure ............................................ 295
.
On Board Diagnosis Logic ....................................265
.
DTC Confirmation Procedure ...............................265 . P0605 ECM ...................................................... 297
.
Diagnosis Procedure ............................................266
. Component Description ....................................... 297
.
Component Inspection ..........................................270
. On Board Diagnosis Logic ................................... 297
.
DTC Confirmation Procedure ............................... 297 .
P0456 EVAP CONTROL SYSTEM ................. 272
. Diagnosis Procedure ............................................ 298
.
On Board Diagnosis Logic ....................................272
.
DTC Confirmation Procedure ...............................273 . P0643 SENSOR POWER SUPPLY ................. 299
.
Overall Function Check ........................................273
. On Board Diagnosis Logic ................................... 299
.
Diagnosis Procedure ............................................274
. DTC Confirmation Procedure ............................... 299 .
Component Inspection ..........................................279
. Diagnosis Procedure ............................................ 299
.
P0460 FUEL LEVEL SENSOR ....................... 280
. P0850 PNP SWITCH ....................................... 302
.
Component Description ........................................280
. Component Description ....................................... 302
.
On Board Diagnosis Logic ....................................280
. On Board Diagnosis Logic ................................... 302
.
DTC Confirmation Procedure ...............................280 . DTC Confirmation Procedure ............................... 302 .
Diagnosis Procedure ............................................280
. Overall Function Check ........................................ 302
.
Diagnosis Procedure ............................................ 303
.
P0461 FUEL LEVEL SENSOR ....................... 282
.
Component Description ........................................282
. P1148, P1168 CLOSED LOOP CONTROL .... 305
.
On Board Diagnosis Logic ....................................282
. On Board Diagnosis Logic ................................... 305
.
Overall Function Check ........................................282
.
Diagnosis Procedure ............................................283
. P1211 TCS CONTROL UNIT .......................... 306
.
Description ........................................................... 306
.
P0462, P0463 FUEL LEVEL SENSOR .......... 284
. On Board Diagnosis Logic ................................... 306 .
Component Description ........................................284
. DTC Confirmation Procedure ............................... 306 .
On Board Diagnosis Logic ....................................284
. Diagnosis Procedure ............................................ 306 .
EC-4
P1212 TCS COMMUNICATION LINE ............. 307
. On Board Diagnosis Logic .................................... 334
.
Description ........................................................... 307
. DTC Confirmation Procedure ............................... 334. A
On Board Diagnosis Logic ................................... 307 . Diagnosis Procedure ............................................ 334
.
DTC Confirmation Procedure ............................... 307 . Component Inspection .......................................... 336
.
Diagnosis Procedure ............................................ 307 .
P1572 ASCD BRAKE SWITCH ...................... 338 EC
P1217 ENGINE OVER TEMPERATURE ........ 308
. Component Description ........................................ 338
.
On Board Diagnosis Logic ................................... 308
. On Board Diagnosis Logic .................................... 338
.
Overall Function Check ........................................ 308
. DTC Confirmation Procedure ............................... 338. C
Diagnosis Procedure ............................................ 309
. Diagnosis Procedure ............................................ 339
.
Main 12 Causes of Overheating ........................... 310 . Component Inspection .......................................... 342
.
D
P1225 TP SENSOR ......................................... 312
. P1574 ASCD VEHICLE SPEED SENSOR ..... 343
Component Description ........................................ 312
. Component Description ........................................ 343
.
On Board Diagnosis Logic ................................... 312
. On Board Diagnosis Logic .................................... 343
.
DTC Confirmation Procedure ............................... 312. DTC Confirmation Procedure ............................... 343. E
Diagnosis Procedure ............................................ 312
. Diagnosis Procedure ............................................ 343
.
P1226 TP SENSOR ......................................... 314
. P1715 INPUT SPEED SENSOR (TURBINE F
Component Description ........................................ 314
. REVOLUTION SENSOR) ................................ 345
On Board Diagnosis Logic ................................... 314
. Description ............................................................ 345
.
DTC Confirmation Procedure ............................... 314. On Board Diagnosis Logic .................................... 345 .
Diagnosis Procedure ............................................ 314
. Diagnosis Procedure ............................................ 345 . G
P1421 COLD START CONTROL .................... 316
. P1800 VIAS CONTROL SOLENOID VALVE 1. 346
Description ........................................................... 316
. Component Description ........................................ 346
. H
On Board Diagnosis Logic ................................... 316 . On Board Diagnosis Logic .................................... 346
.
DTC Confirmation Procedure ............................... 316 . DTC Confirmation Procedure ............................... 346.
Diagnosis Procedure ............................................ 316 . Diagnosis Procedure ............................................ 346
.
I
Component Inspection .......................................... 347
.
P1550 BATTERY CURRENT SENSOR .......... 318
.
Component Description ........................................ 318
. P1805 BRAKE SWITCH ................................. 349
On Board Diagnosis Logic ................................... 318
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