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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 ....................................................... 8     .        NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-                                           F
  DTC No. Index ........................................................ 8  .        NATS) ....................................................................... 47
                                                                                                                                                               .
  Alphabetical Index ................................................. 12   .         Description ............................................................. 47
                                                                                                                                                               .
PRECAUTIONS ....................................................... 16      .        ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 48                           .        G
  Precautions for Supplemental Restraint System                                       Introduction ............................................................ 48
                                                                                                                                                               .
  (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                             Two Trip Detection Logic ....................................... 48      .
  SIONER" ............................................................... 16.         Emission-related Diagnostic Information ............... 49               .
                                                                                                                                                                        H
  On Board Diagnostic (OBD) System of Engine and                                      Malfunction Indicator Lamp (MIL) .......................... 63           .
  A/T ......................................................................... 16
                                                                            .         OBD System Operation Chart ............................... 65            .
  Precaution ............................................................. 16
                                                                            .        BASIC SERVICE PROCEDURE .............................. 71                 .
PREPARATION ........................................................ 20     .         Basic Inspection .................................................... 71 .         I
  Special Service Tools ............................................ 20     .         Idle Speed and Ignition Timing Check ................... 81              .
  Commercial Service Tools ..................................... 22         .         VIN Registration .................................................... 83 .
ENGINE CONTROL SYSTEM ................................. 23                  .         Accelerator Pedal Released Position Learning ..... 83                    .        J
  System Diagram .................................................... 23    .         Throttle Valve Closed Position Learning ................ 83              .
  Multiport Fuel Injection (MFI) System ................... 24              .         Ethanol Mixture Ratio Adaptation (Flexible Fuel
  Electronic Ignition (EI) System .............................. 26         .         Vehicle) .................................................................. 84
                                                                                                                                                               .
                                                                                                                                                                        K
  Fuel Cut Control (at No Load and High Engine                                        Idle Air Volume Learning ....................................... 85      .
  Speed) ................................................................... 27
                                                                            .         Fuel Pressure Check ............................................. 87     .
AIR CONDITIONING CUT CONTROL .................... 28                        .        TROUBLE DIAGNOSIS ........................................... 89          .
  Input/Output Signal Chart ...................................... 28       .         Trouble Diagnosis Introduction .............................. 89         .        L
  System Description ............................................... 28     .         DTC Inspection Priority Chart ................................ 95        .
AUTOMATIC SPEED CONTROL DEVICE (ASCD) 29                                    ...       Fail-safe Chart ....................................................... 97
                                                                                                                                                               .
  System Description ............................................... 29     .         Symptom Matrix Chart ........................................... 98      .        M
  Component Description ......................................... 30        .         Engine Control Component Parts Location ......... 102                    .
CAN COMMUNICATION ......................................... 31              .         Vacuum Hose Drawing ........................................ 108         .
  System Description ............................................... 31     .         Circuit Diagram .................................................... 109 .
EVAPORATIVE EMISSION SYSTEM ...................... 32                       .         ECM Harness Connector Terminal Layout ...........111                     .
  Description ............................................................ 32
                                                                            .         ECM Terminals and Reference Value ...................111                 .
  Component Inspection .......................................... 35        .         CONSULT-II Function (ENGINE) ......................... 120               .
  Removal and Installation ....................................... 36       .         Generic Scan Tool (GST) Function ...................... 133              .
  How to Detect Fuel Vapor Leakage ...................... 37                .         CONSULT-II Reference Value in Data Monitor .... 135                      .
ON BOARD REFUELING VAPOR RECOVERY                                                     Major Sensor Reference Graph in Data Monitor
(ORVR) ..................................................................... 39
                                                                            .         Mode .................................................................... 138
                                                                                                                                                               .
  System Description ............................................... 39     .        TROUBLE DIAGNOSIS - SPECIFICATION VALUE 140                               .
  Diagnostic Procedure ............................................ 40      .         Description ........................................................... 140
                                                                                                                                                               .
  Component Inspection .......................................... 43        .         Testing Condition ................................................. 140  .
POSITIVE CRANKCASE VENTILATION ................ 45                          .         Inspection Procedure ........................................... 140     .
  Description ............................................................ 45
                                                                            .         Diagnostic Procedure .......................................... 141      .
  Component Inspection .......................................... 45        .        TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-


Revision: October 2006                                                         EC-1                                                                   2006 Titan
DENT ...................................................................... 150
                                                                          .        Component Inspection ......................................... 192.
 Description ........................................................... 150
                                                                          .        Removal and Installation ...................................... 193
                                                                                                                                                     .
 Diagnostic Procedure .......................................... 150      .       DTC P0112, P0113 IAT SENSOR ........................... 194        .
POWER SUPPLY AND GROUND CIRCUIT .......... 151                            .        Component Description ....................................... 194 .
 Wiring Diagram .................................................... 151  .        On Board Diagnosis Logic ................................... 194  .
 Diagnostic Procedure .......................................... 152      .        DTC Confirmation Procedure ............................... 194    .
 Ground Inspection ............................................... 156    .        Wiring Diagram .................................................... 195
                                                                                                                                                     .
DTC U1000, U1001 CAN COMMUNICATION LINE. 157                                       Diagnostic Procedure ........................................... 196
                                                                                                                                                     .
 Description ........................................................... 157
                                                                          .        Component Inspection ......................................... 197.
 On Board Diagnosis Logic ................................... 157         .        Removal and Installation ...................................... 197
                                                                                                                                                     .
 DTC Confirmation Procedure .............................. 157            .       DTC P0117, P0118 ECT SENSOR ......................... 198          .
 Wiring Diagram .................................................... 158  .        Component Description ....................................... 198 .
 Diagnostic Procedure .......................................... 159      .        On Board Diagnosis Logic ................................... 198  .
DTC U1010 CAN COMMUNICATION .................... 160                      .        DTC Confirmation Procedure ............................... 199    .
 Description ........................................................... 160
                                                                          .        Wiring Diagram .................................................... 200
                                                                                                                                                     .
 On Board Diagnosis Logic ................................... 160         .        Diagnostic Procedure ........................................... 201
                                                                                                                                                     .
 DTC Confirmation Procedure .............................. 160            .        Component Inspection ......................................... 202.
 Diagnostic Procedure .......................................... 161      .        Removal and Installation ...................................... 203
                                                                                                                                                     .
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1                                       DTC P0122, P0123 TP SENSOR ........................... 204         .
HEATER ................................................................. 162
                                                                          .        Component Description ....................................... 204 .
 Description ........................................................... 162
                                                                          .        CONSULT-II Reference Value in Data Monitor Mode
 CONSULT-II Reference Value in Data Monitor Mode                                                                                                     .204
                                                                          . 162    On Board Diagnosis Logic ................................... 204  .
 On Board Diagnosis Logic ................................... 162         .        DTC Confirmation Procedure ............................... 205    .
 DTC Confirmation Procedure .............................. 162            .        Wiring Diagram .................................................... 206
                                                                                                                                                     .
 Wiring Diagram .................................................... 163  .        Diagnostic Procedure ........................................... 207
                                                                                                                                                     .
 Diagnostic Procedure .......................................... 166      .        Component Inspection ......................................... 210.
 Component Inspection ......................................... 168       .        Removal and Installation ...................................... 210
                                                                                                                                                     .
 Removal and Installation ..................................... 168       .       DTC P0125 ECT SENSOR ..................................... 211     .
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER 169                           .        Component Description ....................................... 211 .
 Description ........................................................... 169
                                                                          .        On Board Diagnosis Logic ................................... 211  .
 CONSULT-II Reference Value in Data Monitor Mode                                   DTC Confirmation Procedure ............................... 212    .
                                                                          . 169    Diagnostic Procedure ........................................... 212
                                                                                                                                                     .
 On Board Diagnosis Logic ................................... 169         .        Component Inspection ......................................... 213.
 DTC Confirmation Procedure .............................. 170            .        Removal and Installation ...................................... 213
                                                                                                                                                     .
 Wiring Diagram .................................................... 171  .       DTC P0127 IAT SENSOR ....................................... 214   .
 Diagnostic Procedure .......................................... 174      .        Component Description ....................................... 214 .
 Component Inspection ......................................... 176       .        On Board Diagnosis Logic ................................... 214  .
 Removal and Installation ..................................... 176       .        DTC Confirmation Procedure ............................... 214    .
DTC P0101 MAF SENSOR .................................... 177             .        Diagnostic Procedure ........................................... 215
                                                                                                                                                     .
 Component Description ....................................... 177        .        Component Inspection ......................................... 216.
 CONSULT-II Reference Value in Data Monitor Mode                                   Removal and Installation ...................................... 216
                                                                                                                                                     .
                                                                          . 177   DTC P0128 THERMOSTAT FUNCTION ................ 217                 .
 On Board Diagnosis Logic ................................... 177         .        On Board Diagnosis Logic ................................... 217  .
 DTC Confirmation Procedure .............................. 178            .        DTC Confirmation Procedure ............................... 217    .
 Overall Function Check ....................................... 179       .        Diagnostic Procedure ........................................... 217
                                                                                                                                                     .
 Wiring Diagram .................................................... 180  .        Component Inspection ......................................... 218.
 Diagnostic Procedure .......................................... 181      .        Removal and Installation ...................................... 218
                                                                                                                                                     .
 Component Inspection ......................................... 184       .       DTC P0130, P0150 A/F SENSOR 1 ....................... 219          .
 Removal and Installation ..................................... 185       .        Component Description ....................................... 219 .
DTC P0102, P0103 MAF SENSOR ........................ 186                  .        CONSULT-II Reference Value in Data Monitor Mode
 Component Description ....................................... 186        .                                                                          .219
 CONSULT-II Reference Value in Data Monitor Mode                                   On Board Diagnosis Logic ................................... 219  .
                                                                          . 186    DTC Confirmation Procedure ............................... 219    .
 On Board Diagnosis Logic ................................... 186         .        Overall Function Check ........................................ 220
                                                                                                                                                     .
 DTC Confirmation Procedure .............................. 187            .        Wiring Diagram .................................................... 222
                                                                                                                                                     .
 Wiring Diagram .................................................... 188  .        Diagnostic Procedure ........................................... 225
                                                                                                                                                     .
 Diagnostic Procedure .......................................... 189      .        Removal and Installation ...................................... 228
                                                                                                                                                     .
                                                                                  DTC P0131, P0151 A/F SENSOR 1 ....................... 229          .

Revision: October 2006                                                       EC-2                                                            2006 Titan
 Component Description ....................................... 229.       DTC P0171, P0174 FUEL INJECTION SYSTEM
 CONSULT-II Reference Value in Data Monitor Mode                          FUNCTION ............................................................. 294
                                                                                                                                               .       A
                                                                  . 229     On Board Diagnosis Logic ................................... 294   .
 On Board Diagnosis Logic .................................. 229  .         DTC Confirmation Procedure .............................. 294      .
 DTC Confirmation Procedure .............................. 229    .         Wiring Diagram .................................................... 296
                                                                                                                                               .       EC
 Wiring Diagram ................................................... 231
                                                                  .         Diagnostic Procedure .......................................... 300.
 Diagnostic Procedure .......................................... 234
                                                                  .       DTC P0172, P0175 FUEL INJECTION SYSTEM
 Removal and Installation ..................................... 237
                                                                  .       FUNCTION ............................................................. 305
                                                                                                                                               .
DTC P0132, P0152 A/F SENSOR 1 ...................... 238          .         On Board Diagnosis Logic ................................... 305   .       C
 Component Description ....................................... 238.         DTC Confirmation Procedure .............................. 305      .
 CONSULT-II Reference Value in Data Monitor Mode                            Wiring Diagram .................................................... 307
                                                                                                                                               .
                                                                  . 238     Diagnostic Procedure .......................................... 311.       D
 On Board Diagnosis Logic .................................. 238  .       DTC P0181 FTT SENSOR ..................................... 315       .
 DTC Confirmation Procedure .............................. 238    .         Component Description ....................................... 315  .
 Wiring Diagram ................................................... 240
                                                                  .         On Board Diagnosis Logic ................................... 315   .       E
 Diagnostic Procedure .......................................... 243
                                                                  .         DTC Confirmation Procedure .............................. 315      .
 Removal and Installation ..................................... 246
                                                                  .         Wiring Diagram .................................................... 317
                                                                                                                                               .
DTC P0133, P0153 A/F SENSOR 1 ...................... 247          .         Diagnostic Procedure .......................................... 318.
 Component Description ....................................... 247.         Component Inspection ......................................... 320 .       F
 CONSULT-II Reference Value in Data Monitor Mode                            Removal and Installation ..................................... 320 .
                                                                  . 247   DTC P0182, P0183 FTT SENSOR ......................... 321            .
 On Board Diagnosis Logic .................................. 247  .         Component Description ....................................... 321  .       G
 DTC Confirmation Procedure .............................. 248    .         On Board Diagnosis Logic ................................... 321   .
 Wiring Diagram ................................................... 250
                                                                  .         DTC Confirmation Procedure .............................. 321      .
 Diagnostic Procedure .......................................... 253
                                                                  .         Wiring Diagram .................................................... 322
                                                                                                                                               .       H
 Removal and Installation ..................................... 258
                                                                  .         Diagnostic Procedure .......................................... 323.
DTC P0137, P0157 HO2S2 ................................... 259    .         Component Inspection ......................................... 325 .
 Component Description ....................................... 259.         Removal and Installation ..................................... 325 .
                                                                                                                                                        I
 CONSULT-II Reference Value in Data Monitor Mode                          DTC P0222, P0223 TP SENSOR ........................... 326           .
                                                                  . 259     Component Description ....................................... 326  .
 On Board Diagnosis Logic .................................. 259  .         CONSULT-II Reference Value in Data Monitor Mode
 DTC Confirmation Procedure .............................. 260    .                                                                            . 326   J
 Overall Function Check ....................................... 260
                                                                  .         On Board Diagnosis Logic ................................... 326   .
 Wiring Diagram ................................................... 262
                                                                  .         DTC Confirmation Procedure .............................. 327      .
 Diagnostic Procedure .......................................... 265
                                                                  .         Wiring Diagram .................................................... 328
                                                                                                                                               .       K
 Component Inspection ........................................ 268.         Diagnostic Procedure .......................................... 329.
 Removal and Installation ..................................... 269
                                                                  .         Component Inspection ......................................... 332 .
DTC P0138, P0158 HO2S2 ................................... 270    .         Removal and Installation ..................................... 332 .
                                                                                                                                                       L
 Component Description ....................................... 270.       DTC P0300 - P0308 MULTIPLE CYLINDER MIS-
 CONSULT-II Reference Value in Data Monitor Mode                          FIRE, NO. 1 - 8 CYLINDER MISFIRE .................... 333            .
                                                                  . 270     On Board Diagnosis Logic ................................... 333   .
 On Board Diagnosis Logic .................................. 270  .         DTC Confirmation Procedure .............................. 333      .       M
 DTC Confirmation Procedure .............................. 271    .         Diagnostic Procedure .......................................... 334.
 Overall Function Check ....................................... 272
                                                                  .       DTC P0327, P0328, P0332, P0333 KS .................. 341             .
 Wiring Diagram ................................................... 273
                                                                  .         Component Description ....................................... 341  .
 Diagnostic Procedure .......................................... 276
                                                                  .         On Board Diagnosis Logic ................................... 341   .
 Component Inspection ........................................ 281.         DTC Confirmation Procedure .............................. 341      .
 Removal and Installation ..................................... 282
                                                                  .         Wiring Diagram .................................................... 342
                                                                                                                                               .
DTC P0139, P0159 HO2S2 ................................... 283    .         Diagnostic Procedure .......................................... 343.
 Component Description ....................................... 283.         Component Inspection ......................................... 345 .
 CONSULT-II Reference Value in Data Monitor Mode                            Removal and Installation ..................................... 345 .
                                                                  . 283   DTC P0335 CKP SENSOR (POS) ......................... 346             .
 On Board Diagnosis Logic .................................. 283  .         Component Description ....................................... 346  .
 DTC Confirmation Procedure .............................. 284    .         CONSULT-II Reference Value in Data Monitor Mode
 Overall Function Check ....................................... 284
                                                                  .                                                                            . 346
 Wiring Diagram ................................................... 286
                                                                  .         On Board Diagnosis Logic ................................... 346   .
 Diagnostic Procedure .......................................... 289
                                                                  .         DTC Confirmation Procedure .............................. 346      .
 Component Inspection ........................................ 292.         Wiring Diagram .................................................... 348
                                                                                                                                               .
 Removal and Installation ..................................... 293
                                                                  .         Diagnostic Procedure .......................................... 349.

Revision: October 2006                                               EC-3                                                             2006 Titan
  Component Inspection ......................................... 352       .       VALVE ..................................................................... 401
                                                                                                                                                             .
  Removal and Installation ..................................... 352       .        Component Description ....................................... 401        .
DTC P0340 CMP SENSOR (PHASE) .................... 353                      .        CONSULT-II Reference Value in Data Monitor Mode
  Component Description ....................................... 353        .                                                                                 .401
  On Board Diagnosis Logic ................................... 353         .        On Board Diagnosis Logic ................................... 401         .
  DTC Confirmation Procedure .............................. 353            .        DTC Confirmation Procedure ............................... 402           .
  Wiring Diagram .................................................... 355  .        Wiring Diagram .................................................... 403  .
  Diagnostic Procedure .......................................... 356      .        Diagnostic Procedure ........................................... 404     .
  Component Inspection ......................................... 359       .        Component Inspection ......................................... 406       .
  Removal and Installation ..................................... 359       .       DTC P0451 EVAP CONTROL SYSTEM PRESSURE
DTC P0420, P0430 THREE WAY CATALYST FUNC-                                          SENSOR ................................................................. 408
                                                                                                                                                             .
TION ....................................................................... 360
                                                                           .        Component Description ....................................... 408        .
  On Board Diagnosis Logic ................................... 360         .        CONSULT-II Reference Value in Data Monitor Mode
  DTC Confirmation Procedure .............................. 360            .                                                                                 .408
  Overall Function Check ....................................... 361       .        On Board Diagnosis Logic ................................... 408         .
  Diagnostic Procedure .......................................... 362      .        DTC Confirmation Procedure ............................... 409           .
DTC P0441 EVAP CONTROL SYSTEM ................ 366                         .        Diagnostic Procedure ........................................... 409     .
  System Description .............................................. 366    .        Component Inspection ......................................... 410       .
  On Board Diagnosis Logic ................................... 366         .       DTC P0452 EVAP CONTROL SYSTEM PRESSURE
  DTC Confirmation Procedure .............................. 366            .       SENSOR ................................................................. 411
                                                                                                                                                             .
  Overall Function Check ....................................... 367       .        Component Description ....................................... 411        .
  Diagnostic Procedure .......................................... 368      .        CONSULT-II Reference Value in Data Monitor Mode
DTC P0442 EVAP CONTROL SYSTEM ................ 371                         .                                                                                 . 411
  On Board Diagnosis Logic ................................... 371         .        On Board Diagnosis Logic ................................... 411         .
  DTC Confirmation Procedure .............................. 372            .        DTC Confirmation Procedure ............................... 412           .
  Diagnostic Procedure .......................................... 373      .        Wiring Diagram .................................................... 413  .
DTC P0443 EVAP CANISTER PURGE VOLUME                                                Diagnostic Procedure ........................................... 414     .
CONTROL SOLENOID VALVE .............................. 379                  .        Component Inspection ......................................... 416       .
  Description ........................................................... 379
                                                                           .       DTC P0453 EVAP CONTROL SYSTEM PRESSURE
  CONSULT-II Reference Value in Data Monitor Mode                                  SENSOR ................................................................. 417
                                                                                                                                                             .
                                                                           . 379    Component Description ....................................... 417        .
  On Board Diagnosis Logic ................................... 380         .        CONSULT-II Reference Value in Data Monitor Mode
  DTC Confirmation Procedure .............................. 380            .                                                                                 .417
  Wiring Diagram .................................................... 381  .        On Board Diagnosis Logic ................................... 417         .
  Diagnostic Procedure .......................................... 383      .        DTC Confirmation Procedure ............................... 418           .
  Component Inspection ......................................... 386       .        Wiring Diagram .................................................... 419  .
  Removal and Installation ..................................... 386       .        Diagnostic Procedure ........................................... 420     .
DTC P0444, P0445 EVAP CANISTER PURGE VOL-                                           Component Inspection ......................................... 424       .
UME CONTROL SOLENOID VALVE ..................... 387                       .       DTC P0455 EVAP CONTROL SYSTEM ................ 425                        .
  Description ........................................................... 387
                                                                           .        On Board Diagnosis Logic ................................... 425         .
  CONSULT-II Reference Value in Data Monitor Mode                                   DTC Confirmation Procedure ............................... 426           .
                                                                           . 387    Diagnostic Procedure ........................................... 427     .
  On Board Diagnosis Logic ................................... 388         .       DTC P0456 EVAP CONTROL SYSTEM ................ 433                        .
  DTC Confirmation Procedure .............................. 388            .        On Board Diagnosis Logic ................................... 433         .
  Wiring Diagram .................................................... 389  .        DTC Confirmation Procedure ............................... 434           .
  Diagnostic Procedure .......................................... 391      .        Overall Function Check ........................................ 435      .
  Component Inspection ......................................... 392       .        Diagnostic Procedure ........................................... 436     .
  Removal and Installation ..................................... 393       .       DTC P0460 FUEL LEVEL SENSOR ...................... 442                    .
DTC P0447 EVAP CANISTER VENT CONTROL                                                Component Description ....................................... 442        .
VALVE .................................................................... 394
                                                                           .        On Board Diagnosis Logic ................................... 442         .
  Component Description ....................................... 394        .        DTC Confirmation Procedure ............................... 442           .
  CONSULT-II Reference Value in Data Monitor Mode                                   Diagnostic Procedure ........................................... 443     .
                                                                           . 394    Removal and Installation ...................................... 443      .
  On Board Diagnosis Logic ................................... 394         .       DTC P0461 FUEL LEVEL SENSOR ...................... 444                    .
  DTC Confirmation Procedure .............................. 395            .        Component Description ....................................... 444        .
  Wiring Diagram .................................................... 396  .        On Board Diagnosis Logic ................................... 444         .
  Diagnostic Procedure .......................................... 397      .        Overall Function Check ........................................ 444      .
  Component Inspection ......................................... 399       .        Diagnostic Procedure ........................................... 445     .
DTC P0448 EVAP CANISTER VENT CONTROL                                                Removal and Installation ...................................... 445      .

Revision: October 2006                                                        EC-4                                                                 2006 Titan
DTC P0462, P0463 FUEL LEVEL SENSOR CIR-                                            DTC P1148, P1168 CLOSED LOOP CONTROL ... 476                             .
CUIT ....................................................................... 446
                                                                           .         On Board Diagnosis Logic ................................... 476       .       A
 Component Description ....................................... 446         .       DTC P1211 TCS CONTROL UNIT ......................... 477                 .
 On Board Diagnosis Logic .................................. 446           .         Description ........................................................... 477
                                                                                                                                                            .
 DTC Confirmation Procedure .............................. 446             .         On Board Diagnosis Logic ................................... 477       .       EC
 Diagnostic Procedure .......................................... 447       .         DTC Confirmation Procedure .............................. 477          .
 Removal and Installation ..................................... 447        .         Diagnostic Procedure .......................................... 477    .
DTC P0500 VSS .................................................... 448     .       DTC P1212 TCS COMMUNICATION LINE ........... 478                         .
 Description .......................................................... 448.         Description ........................................................... 478
                                                                                                                                                            .       C
 On Board Diagnosis Logic .................................. 448           .         On Board Diagnosis Logic ................................... 478       .
 DTC Confirmation Procedure .............................. 448             .         DTC Confirmation Procedure .............................. 478          .
 Overall Function Check ....................................... 448        .         Diagnostic Procedure .......................................... 478    .       D
 Diagnostic Procedure .......................................... 449       .       DTC P1217 ENGINE OVER TEMPERATURE ....... 479                            .
DTC P0506 ISC SYSTEM ...................................... 450            .         Description ........................................................... 479
                                                                                                                                                            .
 Description .......................................................... 450.         CONSULT-II Reference Value in Data Monitor Mode                                E
 On Board Diagnosis Logic .................................. 450           .                                                                                . 479
 DTC Confirmation Procedure .............................. 450             .         On Board Diagnosis Logic ................................... 480       .
 Diagnostic Procedure .......................................... 451       .         Overall Function Check ....................................... 480     .
DTC P0507 ISC SYSTEM ...................................... 452            .         Wiring Diagram .................................................... 482.       F
 Description .......................................................... 452.         Diagnostic Procedure .......................................... 484    .
 On Board Diagnosis Logic .................................. 452           .         Main 12 Causes of Overheating .......................... 487           .
 DTC Confirmation Procedure .............................. 452             .         Component Inspection ......................................... 488     .       G
 Diagnostic Procedure .......................................... 453       .       DTC P1220 FUEL PUMP CONTROL MODULE
DTC P0550 PSP SENSOR .................................... 454              .       (FPCM) ................................................................... 489
                                                                                                                                                            .
 Component Description ....................................... 454         .         Description ........................................................... 489
                                                                                                                                                            .       H
 CONSULT-II Reference Value in Data Monitor Mode                                     CONSULT-II Reference Value in Data Monitor Mode
                                                                           . 454                                                                            . 489
 On Board Diagnosis Logic .................................. 454           .         On Board Diagnosis Logic ................................... 489       .
                                                                                                                                                                     I
 DTC Confirmation Procedure .............................. 454             .         DTC Confirmation Procedure .............................. 490          .
 Wiring Diagram ................................................... 455    .         Wiring Diagram .................................................... 491.
 Diagnostic Procedure .......................................... 456       .         Diagnostic Procedure .......................................... 492    .
 Component Inspection ........................................ 458         .         Component Inspection ......................................... 495     .       J
 Removal and Installation ..................................... 458        .       DTC P1225 TP SENSOR ....................................... 497          .
DTC P0603 ECM POWER SUPPLY ...................... 459                      .         Component Description ....................................... 497      .
 Component Description ....................................... 459         .         On Board Diagnosis Logic ................................... 497       .       K
 On Board Diagnosis Logic .................................. 459           .         DTC Confirmation Procedure .............................. 497          .
 DTC Confirmation Procedure .............................. 459             .         Diagnostic Procedure .......................................... 498    .
 Wiring Diagram ................................................... 460    .         Removal and Installation ..................................... 498     .
                                                                                                                                                                    L
 Diagnostic Procedure .......................................... 461       .       DTC P1226 TP SENSOR ....................................... 499          .
DTC P0605 ECM ................................................... 463      .         Component Description ....................................... 499      .
 Component Description ....................................... 463         .         On Board Diagnosis Logic ................................... 499       .
 On Board Diagnosis Logic .................................. 463           .         DTC Confirmation Procedure .............................. 499          .       M
 DTC Confirmation Procedure .............................. 463             .         Diagnostic Procedure .......................................... 500    .
 Diagnostic Procedure .......................................... 464       .         Removal and Installation ..................................... 500     .
DTC P0643 SENSOR POWER SUPPLY ............... 466                          .       DTC P1564 ASCD STEERING SWITCH ............... 501                       .
 On Board Diagnosis Logic .................................. 466           .         Component Description ....................................... 501      .
 DTC Confirmation Procedure .............................. 466             .         CONSULT-II Reference Value in Data Monitor Mode
 Wiring Diagram ................................................... 467    .                                                                                . 501
 Diagnostic Procedure .......................................... 469       .         On Board Diagnosis Logic ................................... 501       .
DTC P0850 PNP SWITCH ..................................... 471             .         DTC Confirmation Procedure .............................. 502          .
 Component Description ....................................... 471         .         Wiring Diagram .................................................... 503.
 CONSULT-II Reference Value in Data Monitor Mode                                     Diagnostic Procedure .......................................... 504    .
                                                                           . 471     Component Inspection ......................................... 507     .
 On Board Diagnosis Logic .................................. 471           .       DTC P1572 ASCD BRAKE SWITCH ..................... 508                    .
 DTC Confirmation Procedure .............................. 471             .         Component Description ....................................... 508      .
 Overall Function Check ....................................... 472        .         CONSULT-II Reference Value in Data Monitor Mode
 Wiring Diagram ................................................... 473    .                                                                                . 508
 Diagnostic Procedure .......................................... 474       .         On Board Diagnosis Logic ................................... 508       .
                                                                                     DTC confirmation Procedure ............................... 509         .

Revision: October 2006                                                       EC-5                                                                 2006 Titan
 Wiring Diagram .................................................... 510 .       DTC P2127, P2128 APP SENSOR ........................ 548               .
 Diagnostic Procedure .......................................... 511     .        Component Description ....................................... 548     .
 Component Inspection ......................................... 515      .        CONSULT-II Reference Value in Data Monitor Mode
DTC P1574 ASCD VEHICLE SPEED SENSOR .... 516                             .                                                                              .548
 Component Description ....................................... 516       .        On Board Diagnosis Logic ................................... 548      .
 On Board Diagnosis Logic ................................... 516        .        DTC Confirmation Procedure ............................... 549        .
 DTC Confirmation Procedure .............................. 516           .        Wiring Diagram .................................................... 550
                                                                                                                                                        .
 Diagnostic Procedure .......................................... 517     .        Diagnostic Procedure ........................................... 551  .
DTC P1805 BRAKE SWITCH ................................ 518              .        Component Inspection ......................................... 554    .
 Description ........................................................... 518
                                                                         .        Removal and Installation ...................................... 554   .
 CONSULT-II Reference Value in Data Monitor Mode                                 DTC P2135 TP SENSOR ....................................... 555        .
                                                                         . 518    Component Description ....................................... 555     .
 On Board Diagnosis Logic ................................... 518        .        CONSULT-II Reference Value in Data Monitor Mode
 DTC Confirmation Procedure .............................. 518           .                                                                              .555
 Wiring Diagram .................................................... 519 .        On Board Diagnosis Logic ................................... 555      .
 Diagnostic Procedure .......................................... 520     .        DTC Confirmation Procedure ............................... 556        .
 Component Inspection ......................................... 522      .        Wiring Diagram .................................................... 557
                                                                                                                                                        .
DTC P2100, P2103 THROTTLE CONTROL MOTOR                                           Diagnostic Procedure ........................................... 558  .
RELAY .................................................................... 523
                                                                         .        Component Inspection ......................................... 561    .
 Component Description ....................................... 523       .        Removal and Installation ...................................... 561   .
 CONSULT-II Reference Value in Data Monitor Mode                                 DTC P2138 APP SENSOR ..................................... 562         .
                                                                         . 523    Component Description ....................................... 562     .
 On Board Diagnosis Logic ................................... 523        .        CONSULT-II Reference Value in Data Monitor Mode
 DTC Confirmation Procedure .............................. 523           .                                                                              .562
 Wiring Diagram .................................................... 525 .        On Board Diagnosis Logic ................................... 562      .
 Diagnostic Procedure .......................................... 526     .        DTC Confirmation Procedure ............................... 563        .
DTC P2101 ELECTRIC THROTTLE CONTROL                                               Wiring Diagram .................................................... 564
                                                                                                                                                        .
FUNCTION ............................................................. 529
                                                                         .        Diagnostic Procedure ........................................... 565  .
 Description ........................................................... 529
                                                                         .        Component Inspection ......................................... 569    .
 On Board Diagnosis Logic ................................... 529        .        Removal and Installation ...................................... 569   .
 DTC Confirmation Procedure .............................. 529           .       DTC P2A00, P2A03 A/F SENSOR 1 ...................... 570               .
 Wiring Diagram .................................................... 530 .        Component Description ....................................... 570     .
 Diagnostic Procedure .......................................... 531     .        CONSULT-II Reference Value in Data Monitor Mode
 Component Inspection ......................................... 534      .                                                                              .570
 Removal and Installation ..................................... 534      .        On Board Diagnosis Logic ................................... 570      .
DTC P2118 THROTTLE CONTROL MOTOR ........ 535                            .        DTC Confirmation Procedure ............................... 570        .
 Component Description ....................................... 535       .        Wiring Diagram .................................................... 572
                                                                                                                                                        .
 On Board Diagnosis Logic ................................... 535        .        Diagnostic Procedure ........................................... 575  .
 DTC Confirmation Procedure .............................. 535           .        Removal and Installation ...................................... 580   .
 Wiring Diagram .................................................... 536 .       ASCD BRAKE SWITCH ......................................... 581        .
 Diagnostic Procedure .......................................... 537     .        Component Description ....................................... 581     .
 Component Inspection ......................................... 538      .        CONSULT-II Reference Value in Data Monitor Mode
 Removal and Installation ..................................... 539      .                                                                              .581
DTC P2119 ELECTRIC THROTTLE CONTROL                                               Wiring Diagram .................................................... 582
                                                                                                                                                        .
ACTUATOR ............................................................ 540.        Diagnostic Procedure ........................................... 583  .
 Component Description ....................................... 540       .        Component Inspection ......................................... 587    .
 On Board Diagnosis Logic ................................... 540        .       ASCD INDICATOR ................................................. 588   .
 DTC Confirmation Procedure .............................. 540           .        Component Description ....................................... 588     .
 Diagnostic Procedure .......................................... 541     .        CONSULT-II Reference Value in Data Monitor Mode
DTC P2122, P2123 APP SENSOR ........................ 542                 .                                                                              .588
 Component Description ....................................... 542       .        Wiring Diagram .................................................... 589
                                                                                                                                                        .
 CONSULT-II Reference Value in Data Monitor Mode                                  Diagnostic Procedure ........................................... 590  .
                                                                         . 542   ELECTRICAL LOAD SIGNAL ............................... 591             .
 On Board Diagnosis Logic ................................... 542        .        Description ........................................................... 591
                                                                                                                                                        .
 DTC Confirmation Procedure .............................. 543           .        CONSULT-II Reference Value in Data Monitor Mode
 Wiring Diagram .................................................... 544 .                                                                              .591
 Diagnostic Procedure .......................................... 545     .        Diagnostic Procedure ........................................... 591  .
 Component Inspection ......................................... 547      .       FUEL INJECTOR .................................................... 592 .
 Removal and Installation ..................................... 547      .        Component Description ....................................... 592     .

Revision: October 2006                                                      EC-6                                                               2006 Titan
  CONSULT-II Reference Value in Data Monitor Mode                               Component Description .................



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