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EC


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B ENGINE

                                                                                                                                                                        A




                                                                            ENGINE CONTROL SYSTEM
                                                                                                       SECTION                     EC                                   EC



                                                                                                                                                                        C



                                                                                                                                                                        D



                                                                                                                                                                        E
                                                                    CONTENTS
INDEX FOR DTC ....................................................... 9     .         Description ............................................................. 44
                                                                                                                                                               .        F
  DTC No. Index ........................................................ 9  .         Component Inspection ........................................... 44      .
  Alphabetical Index ................................................. 13   .        NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-
PRECAUTIONS ....................................................... 17      .        NATS) ....................................................................... 46
                                                                                                                                                               .        G
  Precautions for Supplemental Restraint System                                       Description ............................................................. 46
                                                                                                                                                               .
  (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                            ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 47                           .
  SIONER" ............................................................... 17.         Introduction ............................................................ 47
                                                                                                                                                               .
                                                                                                                                                                        H
  Precautions for Procedures without Cowl Top Cover 17                      ...       Two Trip Detection Logic ....................................... 47      .
  On Board Diagnostic (OBD) System of Engine and                                      Emission-related Diagnostic Information ............... 48               .
  A/T ......................................................................... 17
                                                                            .         Malfunction Indicator Lamp (MIL) .......................... 61           .
  Precaution ............................................................. 18
                                                                            .         OBD System Operation Chart ............................... 64            .         I
PREPARATION ........................................................ 21     .        BASIC SERVICE PROCEDURE .............................. 70                 .
  Special Service Tools ............................................ 21     .         Basic Inspection .................................................... 70 .
  Commercial Service Tools ..................................... 22         .         Idle Speed and Ignition Timing Check ................... 75              .        J
ENGINE CONTROL SYSTEM ................................. 23                  .         Procedure After Replacing ECM ........................... 76             .
  System Diagram .................................................... 23    .         VIN Registration .................................................... 76 .
  Multiport Fuel Injection (MFI) System ................... 24              .         Accelerator Pedal Released Position Learning ..... 77                    .
                                                                                                                                                                        K
  Electronic Ignition (EI) System .............................. 26         .         Throttle Valve Closed Position Learning ................ 77              .
  Fuel Cut Control (at No Load and High Engine                                        Idle Air Volume Learning ....................................... 77      .
  Speed) ................................................................... 27
                                                                            .         Fuel Pressure Check ............................................. 79     .
AIR CONDITIONING CUT CONTROL .................... 28                        .        TROUBLE DIAGNOSIS ........................................... 82          .        L
  Input/Output Signal Chart ...................................... 28       .         Trouble Diagnosis Introduction .............................. 82         .
  System Description ............................................... 28     .         DTC Inspection Priority Chart ................................ 88        .
AUTOMATIC SPEED CONTROL DEVICE (ASCD) 29                                    ...       Fail-safe Chart ....................................................... 90
                                                                                                                                                               .        M
  System Description ............................................... 29     .         Symptom Matrix Chart ........................................... 91      .
  Component Description ......................................... 30        .         Engine Control Component Parts Location ........... 95                   .
CAN COMMUNICATION ......................................... 31              .         Vacuum Hose Drawing ........................................ 102         .
  System Description ............................................... 31     .         Circuit Diagram .................................................... 103 .
EVAPORATIVE EMISSION SYSTEM ...................... 32                       .         ECM Harness Connector Terminal Layout .......... 105                     .
  Description ............................................................ 32
                                                                            .         ECM Terminals and Reference Value .................. 105                 .
  Component Inspection .......................................... 35        .         CONSULT-II Function (ENGINE) ......................... 114               .
  Removal and Installation ....................................... 36       .         Generic Scan Tool (GST) Function ...................... 126              .
  How to Detect Fuel Vapor Leakage ...................... 36                .         CONSULT-II Reference Value in Data Monitor .... 129                      .
ON BOARD REFUELING VAPOR RECOVERY                                                     Major Sensor Reference Graph in Data Monitor
(ORVR) ..................................................................... 39
                                                                            .         Mode .................................................................... 133
                                                                                                                                                               .
  System Description ............................................... 39     .        TROUBLE DIAGNOSIS - SPECIFICATION VALUE 135                               .
  Diagnostic Procedure ............................................ 40      .         Description ........................................................... 135
                                                                                                                                                               .
  Component Inspection .......................................... 42        .         Testing Condition ................................................. 135  .
POSITIVE CRANKCASE VENTILATION ................ 44                          .         Inspection Procedure ........................................... 135     .
                                                                                      Diagnostic Procedure .......................................... 136      .


Revision: September 2006                                                       EC-1                                                           2007 Pathfinder
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-                                           Component Inspection ......................................... 186.
DENT ...................................................................... 145
                                                                          .        Removal and Installation ...................................... 186
                                                                                                                                                     .
 Description ........................................................... 145
                                                                          .       DTC P0101 MAF SENSOR .................................... 187      .
 Diagnostic Procedure .......................................... 145      .        Component Description ....................................... 187 .
POWER SUPPLY AND GROUND CIRCUIT .......... 146                            .        CONSULT-II Reference Value in Data Monitor Mode
 Wiring Diagram .................................................... 146  .                                                                          .187
 Diagnostic Procedure .......................................... 149      .        On Board Diagnosis Logic ................................... 187  .
 Ground Inspection ............................................... 153    .        DTC Confirmation Procedure ............................... 188    .
DTC U1000, U1001 CAN COMMUNICATION LINE. 154                                       Overall Function Check ........................................ 189
                                                                                                                                                     .
 Description ........................................................... 154
                                                                          .        Wiring Diagram .................................................... 190
                                                                                                                                                     .
 On Board Diagnosis Logic ................................... 154         .        Diagnostic Procedure ........................................... 191
                                                                                                                                                     .
 DTC Confirmation Procedure .............................. 154            .        Component Inspection ......................................... 193.
 Wiring Diagram .................................................... 155  .        Removal and Installation ...................................... 195
                                                                                                                                                     .
 Diagnostic Procedure .......................................... 156      .       DTC P0102, P0103 MAF SENSOR ........................ 196           .
DTC U1010 CAN COMMUNICATION .................... 157                      .        Component Description ....................................... 196 .
 Description ........................................................... 157
                                                                          .        CONSULT-II Reference Value in Data Monitor Mode
 On Board Diagnosis Logic ................................... 157         .                                                                          .196
 DTC Confirmation Procedure .............................. 157            .        On Board Diagnosis Logic ................................... 196  .
 Diagnostic Procedure .......................................... 158      .        DTC Confirmation Procedure ............................... 197    .
DTC P0011, P0021 IVT CONTROL ....................... 159                  .        Wiring Diagram .................................................... 198
                                                                                                                                                     .
 Description ........................................................... 159
                                                                          .        Diagnostic Procedure ........................................... 199
                                                                                                                                                     .
 CONSULT-II Reference Value in Data Monitor Mode                                   Component Inspection ......................................... 201.
                                                                          . 159    Removal and Installation ...................................... 202
                                                                                                                                                     .
 On Board Diagnosis Logic ................................... 160         .       DTC P0112, P0113 IAT SENSOR ........................... 203        .
 DTC Confirmation Procedure .............................. 160            .        Component Description ....................................... 203 .
 Diagnostic Procedure .......................................... 161      .        On Board Diagnosis Logic ................................... 203  .
 Component Inspection ......................................... 162       .        DTC Confirmation Procedure ............................... 203    .
 Removal and Installation ..................................... 162       .        Wiring Diagram .................................................... 205
                                                                                                                                                     .
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1                                        Diagnostic Procedure ........................................... 206
                                                                                                                                                     .
HEATER ................................................................. 163
                                                                          .        Component Inspection ......................................... 207.
 Description ........................................................... 163
                                                                          .        Removal and Installation ...................................... 207
                                                                                                                                                     .
 CONSULT-II Reference Value in Data Monitor Mode                                  DTC P0117, P0118 ECT SENSOR ......................... 208          .
                                                                          . 163    Component Description ....................................... 208 .
 On Board Diagnosis Logic ................................... 163         .        On Board Diagnosis Logic ................................... 208  .
 DTC Confirmation Procedure .............................. 163            .        DTC Confirmation Procedure ............................... 209    .
 Wiring Diagram .................................................... 165  .        Wiring Diagram .................................................... 210
                                                                                                                                                     .
 Diagnostic Procedure .......................................... 168      .        Diagnostic Procedure ........................................... 211
                                                                                                                                                     .
 Component Inspection ......................................... 170       .        Component Inspection ......................................... 212.
 Removal and Installation ..................................... 170       .        Removal and Installation ...................................... 212
                                                                                                                                                     .
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER 171                           .       DTC P0122, P0123 TP SENSOR ........................... 213         .
 Description ........................................................... 171
                                                                          .        Component Description ....................................... 213 .
 CONSULT-II Reference Value in Data Monitor Mode                                   CONSULT-II Reference Value in Data Monitor Mode
                                                                          . 171                                                                      .213
 On Board Diagnosis Logic ................................... 171         .        On Board Diagnosis Logic ................................... 213  .
 DTC Confirmation Procedure .............................. 172            .        DTC Confirmation Procedure ............................... 214    .
 Wiring Diagram .................................................... 173  .        Wiring Diagram .................................................... 215
                                                                                                                                                     .
 Diagnostic Procedure .......................................... 176      .        Diagnostic Procedure ........................................... 216
                                                                                                                                                     .
 Component Inspection ......................................... 178       .        Component Inspection ......................................... 219.
 Removal and Installation ..................................... 179       .        Removal and Installation ...................................... 219
                                                                                                                                                     .
DTC P0075, P0081 IVT CONTROL SOLENOID                                             DTC P0125 ECT SENSOR ..................................... 220     .
VALVE .................................................................... 180
                                                                          .        Component Description ....................................... 220 .
 Component Description ....................................... 180        .        On Board Diagnosis Logic ................................... 220  .
 CONSULT-II Reference Value in Data Monitor Mode                                   DTC Confirmation Procedure ............................... 221    .
                                                                          . 180    Diagnostic Procedure ........................................... 221
                                                                                                                                                     .
 On Board Diagnosis Logic ................................... 180         .        Component Inspection ......................................... 222.
 DTC Confirmation Procedure .............................. 180            .        Removal and Installation ...................................... 222
                                                                                                                                                     .
 Wiring Diagram .................................................... 181  .       DTC P0127 IAT SENSOR ....................................... 223   .
 Diagnostic Procedure .......................................... 185      .        Component Description ....................................... 223 .
                                                                                   On Board Diagnosis Logic ................................... 223  .

Revision: September 2006                                                     EC-2                                                     2007 Pathfinder
 DTC Confirmation Procedure .............................. 223    .        Component Description ....................................... 277   .
 Diagnostic Procedure .......................................... 224
                                                                  .        CONSULT-II Reference Value in Data Monitor Mode                             A
 Component Inspection ........................................ 225.                                                                            . 277
 Removal and Installation ..................................... 225
                                                                  .        On Board Diagnosis Logic ................................... 277    .
DTC P0128 THERMOSTAT FUNCTION ............... 226                 .        DTC Confirmation Procedure .............................. 278       .       EC
 On Board Diagnosis Logic .................................. 226  .        Overall Function Check ....................................... 279  .
 DTC Confirmation Procedure .............................. 226    .        Wiring Diagram .................................................... 280
                                                                                                                                               .
 Diagnostic Procedure .......................................... 226
                                                                  .        Diagnostic Procedure .......................................... 283 .
 Component Inspection ........................................ 227.        Component Inspection ......................................... 288  .       C
 Removal and Installation ..................................... 227
                                                                  .        Removal and Installation ..................................... 290  .
DTC P0130, P0150 A/F SENSOR 1 ...................... 228          .       DTC P0139, P0159 HO2S2 .................................... 291      .
 Component Description ....................................... 228.        Component Description ....................................... 291   .       D
 CONSULT-II Reference Value in Data Monitor Mode                           CONSULT-II Reference Value in Data Monitor Mode
                                                                  . 228                                                                        . 291
 On Board Diagnosis Logic .................................. 228  .        On Board Diagnosis Logic ................................... 291    .       E
 DTC Confirmation Procedure .............................. 228    .        DTC Confirmation Procedure .............................. 292       .
 Overall Function Check ....................................... 230
                                                                  .        Overall Function Check ....................................... 292  .
 Wiring Diagram ................................................... 231
                                                                  .        Wiring Diagram .................................................... 294
                                                                                                                                               .
 Diagnostic Procedure .......................................... 234
                                                                  .        Diagnostic Procedure .......................................... 297 .       F
 Removal and Installation ..................................... 236
                                                                  .        Component Inspection ......................................... 300  .
DTC P0131, P0151 A/F SENSOR 1 ...................... 237          .        Removal and Installation ..................................... 302  .
 Component Description ....................................... 237.       DTC P0171, P0174 FUEL INJECTION SYSTEM                                       G
 CONSULT-II Reference Value in Data Monitor Mode                          FUNCTION ............................................................. 303
                                                                                                                                               .
                                                                  . 237    On Board Diagnosis Logic ................................... 303    .
 On Board Diagnosis Logic .................................. 237  .        DTC Confirmation Procedure .............................. 303       .       H
 DTC Confirmation Procedure .............................. 237    .        Wiring Diagram .................................................... 305
                                                                                                                                               .
 Wiring Diagram ................................................... 239
                                                                  .        Diagnostic Procedure .......................................... 309 .
 Diagnostic Procedure .......................................... 242
                                                                  .       DTC P0172, P0175 FUEL INJECTION SYSTEM
                                                                                                                                                        I
 Removal and Installation ..................................... 244
                                                                  .       FUNCTION ............................................................. 315
                                                                                                                                               .
DTC P0132, P0152 A/F SENSOR 1 ...................... 245          .        On Board Diagnosis Logic ................................... 315    .
 Component Description ....................................... 245.        DTC Confirmation Procedure .............................. 315       .
 CONSULT-II Reference Value in Data Monitor Mode                           Wiring Diagram .................................................... 317
                                                                                                                                               .       J
                                                                  . 245    Diagnostic Procedure .......................................... 321 .
 On Board Diagnosis Logic .................................. 245  .       DTC P0181 FTT SENSOR ..................................... 326       .
 DTC Confirmation Procedure .............................. 245    .        Component Description ....................................... 326   .       K
 Wiring Diagram ................................................... 247
                                                                  .        On Board Diagnosis Logic ................................... 326    .
 Diagnostic Procedure .......................................... 250
                                                                  .        DTC Confirmation Procedure .............................. 326       .
 Removal and Installation ..................................... 252
                                                                  .        Wiring Diagram .................................................... 328
                                                                                                                                               .
                                                                                                                                                       L
DTC P0133, P0153 A/F SENSOR 1 ...................... 253          .        Diagnostic Procedure .......................................... 329 .
 Component Description ....................................... 253.        Component Inspection ......................................... 330  .
 CONSULT-II Reference Value in Data Monitor Mode                           Removal and Installation ..................................... 330  .
                                                                  . 253   DTC P0182, P0183 FTT SENSOR ......................... 331            .       M
 On Board Diagnosis Logic .................................. 253  .        Component Description ....................................... 331   .
 DTC Confirmation Procedure .............................. 254    .        On Board Diagnosis Logic ................................... 331    .
 Wiring Diagram ................................................... 256
                                                                  .        DTC Confirmation Procedure .............................. 331       .
 Diagnostic Procedure .......................................... 259
                                                                  .        Wiring Diagram .................................................... 332
                                                                                                                                               .
 Removal and Installation ..................................... 264
                                                                  .        Diagnostic Procedure .......................................... 333 .
DTC P0137, P0157 HO2S2 ................................... 265    .        Component Inspection ......................................... 334  .
 Component Description ....................................... 265.        Removal and Installation ..................................... 334  .
 CONSULT-II Reference Value in Data Monitor Mode                          DTC P0222, P0223 TP SENSOR ........................... 335           .
                                                                  . 265    Component Description ....................................... 335   .
 On Board Diagnosis Logic .................................. 265  .        CONSULT-II Reference Value in Data Monitor Mode
 DTC Confirmation Procedure .............................. 266    .                                                                            . 335
 Overall Function Check ....................................... 266
                                                                  .        On Board Diagnosis Logic ................................... 335    .
 Wiring Diagram ................................................... 268
                                                                  .        DTC Confirmation Procedure .............................. 336       .
 Diagnostic Procedure .......................................... 271
                                                                  .        Wiring Diagram .................................................... 337
                                                                                                                                               .
 Component Inspection ........................................ 274.        Diagnostic Procedure .......................................... 338 .
 Removal and Installation ..................................... 276
                                                                  .        Component Inspection ......................................... 341  .
DTC P0138, P0158 HO2S2 ................................... 277    .        Removal and Installation ..................................... 341  .

Revision: September 2006                                             EC-3                                                      2007 Pathfinder
DTC P0300 - P0306 MULTIPLE CYLINDER MIS-                                            Component Inspection ......................................... 397       .
FIRE, NO. 1 - 6 CYLINDER MISFIRE .................... 342                  .        Removal and Installation ...................................... 397      .
  On Board Diagnosis Logic ................................... 342         .       DTC P0444, P0445 EVAP CANISTER PURGE VOL-
  DTC Confirmation Procedure .............................. 342            .       UME CONTROL SOLENOID VALVE ..................... 398                      .
  Diagnostic Procedure .......................................... 343      .        Description ........................................................... 398
                                                                                                                                                             .
DTC P0327, P0328, P0332, P0333 KS .................. 350                   .        CONSULT-II Reference Value in Data Monitor Mode
  Component Description ....................................... 350        .                                                                                 .398
  On Board Diagnosis Logic ................................... 350         .        On Board Diagnosis Logic ................................... 399         .
  DTC Confirmation Procedure .............................. 350            .        DTC Confirmation Procedure ............................... 399           .
  Wiring Diagram .................................................... 351  .        Wiring Diagram .................................................... 400  .
  Diagnostic Procedure .......................................... 352      .        Diagnostic Procedure ........................................... 402     .
  Component Inspection ......................................... 354       .        Component Inspection ......................................... 403       .
  Removal and Installation ..................................... 354       .        Removal and Installation ...................................... 404      .
DTC P0335 CKP SENSOR (POS) ......................... 355                   .       DTC P0447 EVAP CANISTER VENT CONTROL
  Component Description ....................................... 355        .       VALVE ..................................................................... 405
                                                                                                                                                             .
  CONSULT-II Reference Value in Data Monitor Mode                                   Component Description ....................................... 405        .
                                                                           . 355    CONSULT-II Reference Value in Data Monitor Mode
  On Board Diagnosis Logic ................................... 355         .                                                                                 .405
  DTC Confirmation Procedure .............................. 355            .        On Board Diagnosis Logic ................................... 405         .
  Wiring Diagram .................................................... 357  .        DTC Confirmation Procedure ............................... 406           .
  Diagnostic Procedure .......................................... 358      .        Wiring Diagram .................................................... 407  .
  Component Inspection ......................................... 361       .        Diagnostic Procedure ........................................... 408     .
  Removal and Installation ..................................... 361       .        Component Inspection ......................................... 410       .
DTC P0340, P0345 CMP SENSOR (PHASE) ........ 362                           .       DTC P0448 EVAP CANISTER VENT CONTROL
  Component Description ....................................... 362        .       VALVE ..................................................................... 412
                                                                                                                                                             .
  CONSULT-II Reference Value in Data Monitor Mode                                   Component Description ....................................... 412        .
                                                                           . 362    CONSULT-II Reference Value in Data Monitor Mode
  On Board Diagnosis Logic ................................... 362         .                                                                                 .412
  DTC Confirmation Procedure .............................. 362            .        On Board Diagnosis Logic ................................... 412         .
  Wiring Diagram .................................................... 364  .        DTC Confirmation Procedure ............................... 413           .
  Diagnostic Procedure .......................................... 367      .        Wiring Diagram .................................................... 414  .
  Component Inspection ......................................... 370       .        Diagnostic Procedure ........................................... 415     .
  Removal and Installation ..................................... 370       .        Component Inspection ......................................... 416       .
DTC P0420, P0430 THREE WAY CATALYST FUNC-                                          DTC P0451 EVAP CONTROL SYSTEM PRESSURE
TION ....................................................................... 371
                                                                           .       SENSOR ................................................................. 418
                                                                                                                                                             .
  On Board Diagnosis Logic ................................... 371         .        Component Description ....................................... 418        .
  DTC Confirmation Procedure .............................. 371            .        CONSULT-II Reference Value in Data Monitor Mode
  Overall Function Check ....................................... 372       .                                                                                 .418
  Diagnostic Procedure .......................................... 373      .        On Board Diagnosis Logic ................................... 418         .
DTC P0441 EVAP CONTROL SYSTEM ................ 377                         .        DTC Confirmation Procedure ............................... 419           .
  System Description .............................................. 377    .        Diagnostic Procedure ........................................... 419     .
  On Board Diagnosis Logic ................................... 377         .        Component Inspection ......................................... 420       .
  DTC Confirmation Procedure .............................. 377            .       DTC P0452 EVAP CONTROL SYSTEM PRESSURE
  Overall Function Check ....................................... 378       .       SENSOR ................................................................. 421
                                                                                                                                                             .
  Diagnostic Procedure .......................................... 379      .        Component Description ....................................... 421        .
DTC P0442 EVAP CONTROL SYSTEM ................ 382                         .        CONSULT-II Reference Value in Data Monitor Mode
  On Board Diagnosis Logic ................................... 382         .                                                                                 .421
  DTC Confirmation Procedure .............................. 383            .        On Board Diagnosis Logic ................................... 421         .
  Diagnostic Procedure .......................................... 384      .        DTC Confirmation Procedure ............................... 422           .
DTC P0443 EVAP CANISTER PURGE VOLUME                                                Wiring Diagram .................................................... 423  .
CONTROL SOLENOID VALVE .............................. 390                  .        Diagnostic Procedure ........................................... 424     .
  Description ........................................................... 390
                                                                           .        Component Inspection ......................................... 426       .
  CONSULT-II Reference Value in Data Monitor Mode                                  DTC P0453 EVAP CONTROL SYSTEM PRESSURE
                                                                           . 390   SENSOR ................................................................. 427
                                                                                                                                                             .
  On Board Diagnosis Logic ................................... 391         .        Component Description ....................................... 427        .
  DTC Confirmation Procedure .............................. 391            .        CONSULT-II Reference Value in Data Monitor Mode
  Wiring Diagram .................................................... 392  .                                                                                 .427
  Diagnostic Procedure .......................................... 394      .        On Board Diagnosis Logic ................................... 427         .
                                                                                    DTC Confirmation Procedure ............................... 428           .

Revision: September 2006                                                      EC-4                                                          2007 Pathfinder
 Wiring Diagram ................................................... 429
                                                                      .        DTC Confirmation Procedure .............................. 468         .
 Diagnostic Procedure .......................................... 430  .        Wiring Diagram .................................................... 469
                                                                                                                                                     .       A
 Component Inspection ........................................ 434    .        Diagnostic Procedure .......................................... 470   .
DTC P0455 EVAP CONTROL SYSTEM ............... 435                     .       DTC P0605 ECM .................................................... 472 .
 On Board Diagnosis Logic .................................. 435      .        Component Description ....................................... 472     .       EC
 DTC Confirmation Procedure .............................. 436        .        On Board Diagnosis Logic ................................... 472      .
 Diagnostic Procedure .......................................... 437  .        DTC Confirmation Procedure .............................. 472         .
DTC P0456 EVAP CONTROL SYSTEM ............... 442                     .        Diagnostic Procedure .......................................... 473   .
 On Board Diagnosis Logic .................................. 442      .       DTC P0643 SENSOR POWER SUPPLY ............... 475                      .       C
 DTC Confirmation Procedure .............................. 443        .        On Board Diagnosis Logic ................................... 475      .
 Overall Function Check ....................................... 444   .        DTC Confirmation Procedure .............................. 475         .
 Diagnostic Procedure .......................................... 445  .        Wiring Diagram .................................................... 476
                                                                                                                                                     .       D
DTC P0460 FUEL LEVEL SENSOR ..................... 451                 .        Diagnostic Procedure .......................................... 478   .
 Component Description ....................................... 451    .       DTC P0850 PNP SWITCH ..................................... 480         .
 On Board Diagnosis Logic .................................. 451      .        Component Description ....................................... 480     .       E
 DTC Confirmation Procedure .............................. 451        .        CONSULT-II Reference Value in Data Monitor Mode
 Diagnostic Procedure .......................................... 452  .                                                                              . 480
 Removal and Installation ..................................... 452   .        On Board Diagnosis Logic ................................... 480      .
DTC P0461 FUEL LEVEL SENSOR ..................... 453                 .        DTC Confirmation Procedure .............................. 480         .       F
 Component Description ....................................... 453    .        Overall Function Check ....................................... 481    .
 On Board Diagnosis Logic .................................. 453      .        Wiring Diagram .................................................... 482
                                                                                                                                                     .
 Overall Function Check ....................................... 453   .        Diagnostic Procedure .......................................... 483   .       G
 Diagnostic Procedure .......................................... 454  .       DTC P1148, P1168 CLOSED LOOP CONTROL ... 485                           .
 Removal and Installation ..................................... 454   .        On Board Diagnosis Logic ................................... 485      .
DTC P0462, P0463 FUEL LEVEL SENSOR ......... 455                      .       DTC P1211 TCS CONTROL UNIT ......................... 486               .       H
 Component Description ....................................... 455    .        Description ........................................................... 486
                                                                                                                                                     .
 On Board Diagnosis Logic .................................. 455      .        On Board Diagnosis Logic ................................... 486      .
 DTC Confirmation Procedure .............................. 455        .        DTC Confirmation Procedure .............................. 486         .
                                                                                                                                                              I
 Diagnostic Procedure .......................................... 456  .        Diagnostic Procedure .......................................... 486   .
 Removal and Installation ..................................... 456   .       DTC P1212 TCS COMMUNICATION LINE ........... 487                       .
DTC P0500 VSS .................................................... 457.        Description ........................................................... 487
                                                                                                                                                     .
 Description .......................................................... 457
                                                                      .        On Board Diagnosis Logic ................................... 487      .       J
 On Board Diagnosis Logic .................................. 457      .        DTC Confirmation Procedure .............................. 487         .
 DTC Confirmation Procedure .............................. 457        .        Diagnostic Procedure .......................................... 487   .
 Overall Function Check ....................................... 458   .       DTC P1217 ENGINE OVER TEMPERATURE ....... 488                          .       K
 Diagnostic Procedure .......................................... 458  .        Description ........................................................... 488
                                                                                                                                                     .
DTC P0506 ISC SYSTEM ...................................... 459       .        CONSULT-II Reference Value in Data Monitor Mode
 Description .......................................................... 459
                                                                      .                                                                              . 489
                                                                                                                                                             L
 On Board Diagnosis Logic .................................. 459      .        On Board Diagnosis Logic ................................... 490      .
 DTC Confirmation Procedure .............................. 459        .        Overall Function Check ....................................... 490    .
 Diagnostic Procedure .......................................... 460  .        Wiring Diagram .................................................... 492
                                                                                                                                                     .
DTC P0507 ISC SYSTEM ...................................... 461       .        Diagnostic Procedure .......................................... 494   .       M
 Description .......................................................... 461
                                                                      .        Main 12 Causes of Overheating .......................... 496          .
 On Board Diagnosis Logic .................................. 461      .        Component Inspection ......................................... 497    .
 DTC Confirmation Procedure .............................. 461        .       DTC P1225 TP SENSOR ....................................... 498        .
 Diagnostic Procedure .......................................... 462  .        Component Description ....................................... 498     .
DTC P0550 PSP SENSOR .................................... 463         .        On Board Diagnosis Logic ................................... 498      .
 Component Description ....................................... 463    .        DTC Confirmation Procedure .............................. 498         .
 CONSULT-II Reference Value in Data Monitor Mode                               Diagnostic Procedure .......................................... 499   .
                                                                      . 463    Removal and Installation ..................................... 499    .
 On Board Diagnosis Logic .................................. 463      .       DTC P1226 TP SENSOR ....................................... 500        .
 DTC Confirmation Procedure .............................. 463        .        Component Description ....................................... 500     .
 Wiring Diagram ................................................... 464
                                                                      .        On Board Diagnosis Logic ................................... 500      .
 Diagnostic Procedure .......................................... 465  .        DTC Confirmation Procedure .............................. 500         .
 Component Inspection ........................................ 467    .        Diagnostic Procedure .......................................... 501   .
 Removal and Installation ..................................... 467   .        Removal and Installation ..................................... 501    .
DTC P0603 ECM POWER SUPPLY ...................... 468                 .       DTC P1421 COLD START CONTROL .................. 502                    .
 Component Description ....................................... 468    .        Description ........................................................... 502
                                                                                                                                                     .
 On Board Diagnosis Logic .................................. 468      .        On Board Diagnosis Logic ................................... 502      .

Revision: September 2006                                                 EC-5                                                       2007 Pathfinder
 DTC Confirmation Procedure .............................. 502     .        DTC Confirmation Procedure ............................... 547          .
 Diagnostic Procedure .......................................... 502
                                                                   .        Diagnostic Procedure ........................................... 548    .
DTC P1550 BATTERY CURRENT SENSOR ......... 504                     .       DTC P1715 INPUT SPEED SENSOR (TURBINE
 Component Description ....................................... 504 .       REVOLUTION SENSOR) ....................................... 549           .
 CONSULT-II Reference Value in Data Monitor Mode                            Description ........................................................... 549
                                                                                                                                                    .
                                                                   . 504    CONSULT-II Reference Value in Data Monitor Mode
 On Board Diagnosis Logic ................................... 504  .                                                                                .549
 DTC Confirmation Procedure .............................. 504     .        On Board Diagnosis Logic ................................... 549        .
 Wiring Diagram .................................................... 506
                                                                   .        Diagnostic Procedure ........................................... 549    .
 Diagnostic Procedure .......................................... 507
                                                                   .       DTC P1800 VIAS CONTROL SOLENOID VALVE . 550
 Component Inspection ......................................... 509.        Component Description ....................................... 550       .
DTC P1551, P1552 BATTERY CURRENT SENSOR 511                        .        CONSULT-II Reference Value in Data Monitor Mode
 Component Description ....................................... 511 .                                                                                .550
 CONSULT-II Reference Value in Data Monitor Mode                            On Board Diagnosis Logic ................................... 550        .
                                                                   . 511    DTC Confirmation Procedure ............................... 550          .
 On Board Diagnosis Logic ................................... 511  .        Wiring Diagram .................................................... 551 .
 DTC Confirmation Procedure .............................. 511     .        Diagnostic Procedure ........................................... 552    .
 Wiring Diagram .................................................... 513
                                                                   .        Component Inspection ......................................... 553      .
 Diagnostic Procedure .......................................... 514
                                                                   .        Removal and Installation ...................................... 554     .
 Component Inspection ......................................... 516.       DTC P1805 BRAKE SWITCH ................................ 555              .
DTC P1553 BATTERY CURRENT SENSOR ......... 518                     .        Description ........................................................... 555
                                                                                                                                                    .
 Component Description ....................................... 518 .        CONSULT-II Reference Value in Data Monitor Mode
 CONSULT-II Reference Value in Data Monitor Mode                                                                                                    .555
                                                                   . 518    On Board Diagnosis Logic ................................... 555        .
 On Board Diagnosis Logic ................................... 518  .        DTC Confirmation Procedure ............................... 555          .
 DTC Confirmation Procedure .............................. 518     .        Wiring Diagram .................................................... 556 .
 Wiring Diagram .................................................... 520
                                                                   .        Diagnostic Procedure ........................................... 557    .
 Diagnostic Procedure .......................................... 521
                                                                   .        Component Inspection ......................................... 559      .
 Component Inspection ......................................... 523.       DTC P2100, P2103 THROTTLE CONTROL MOTOR
DTC P1554 BATTERY CURRENT SENSOR ......... 525                     .       RELAY .................................................................... 560
                                                                                                                                                    .
 Component Description ....................................... 525 .        Component Description ....................................... 560       .
 CONSULT-II Reference Value in Data Monitor Mode                            CONSULT-II Reference Value in Data Monitor Mode
                                                                   . 525                                                                            .560
 On Board Diagnosis Logic ................................... 525  .        On Board Diagnosis Logic ................................... 560        .
 Overall Function Check ....................................... 525.        DTC Confirmation Procedure ............................... 560          .
 Wiring Diagram .................................................... 527
                                                                   .        Wiring Diagram .................................................... 562 .
 Diagnostic Procedure .......................................... 528
                                                                   .        Diagnostic Procedure ........................................... 563    .
 Component Inspection ......................................... 530.       DTC P2101 ELECTRIC THROTTLE CONTROL
DTC P1564 ASCD STEERING SWITCH ............... 532                 .       FUNCTION ............................................................. 566
                                                                                                                                                    .
 Component Description ....................................... 532 .        Description ........................................................... 566
                                                                                                                                                    .
 CONSULT-II Reference Value in Data Monitor Mode                            On Board Diagnosis Logic ................................... 566        .
                                                                   . 532    DTC Confirmation Procedure ............................... 566          .
 On Board Diagnosis Logic ................................... 532  .        Wiring Diagram .................................................... 567 .
 DTC Confirmation Procedure .............................. 533     .        Diagnostic Procedure ........................................... 568    .
 Wiring Diagram .................................................... 534
                                                                   .        Component Inspection ......................................... 571      .
 Diagnostic Procedure .......................................... 535
                                                                   .        Removal and Installation ...................................... 571     .
 Component Inspection ......................................... 538.       DTC P2118 THROTTLE CONTROL MOTOR ........ 572                            .
DTC P1572 ASCD BRAKE SWITCH ..................... 539              .        Component Description ....................................... 572       .
 Component Description ....................................... 539 .        On Board Diagnosis Logic ................................... 572        .
 CONSULT-II Reference Value in Data Monitor Mode                            DTC Confirmation Procedure ............................... 572          .
                                                                   . 539    Wiring Diagram .................................................... 573 .
 On Board Diagnosis Logic ................................... 539  .        Diagnostic Procedure ........................................... 574    .
 DTC Confirmation Procedure .............................. 540     .        Component Inspection ......................................... 575      .
 Wiring Diagram .................................................... 541
                                                                   .        Removal and Installation ...................................... 576     .
 Diagnostic Procedure .......................................... 542
                                                                   .       DTC P2119 ELECTRIC THROTTLE CONTROL
 Component Inspection ......................................... 546.       ACTUATOR ............................................................ 577.
DTC P1574 ASCD VEHICLE SPEED SENSOR .... 547                       .        Component Description ....................................... 577       .
 Component Description ....................................... 547 .        On Board Diagnosis Logic ................................... 577        .
 On Board Diagnosis Logic ................................... 547  .

Revision: September 2006                                              EC-6                           



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