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EC


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B ENGINE

                                                                                                                                                                    A


                                                                                                                                                                    EC
                                                                                                    SECTION
                                                                         ENGINE CONTROL SYSTEM                                                                      C


                                                                                                                                                                    D


                                                                                                                                                                    E
                                                                  CONTENTS
                                KA24DE                                             Basic Inspection .................................................... 73 .       F
                                                                                   Symptom Matrix Chart ........................................... 83      .
INDEX FOR DTC ..................................................... 17   .         Engine Control Component Parts Location ........... 88                   .
  Alphabetical Index ................................................. 17.         Circuit Diagram ...................................................... 90.       G
  DTC No. Index ...................................................... 19.         ECM Harness Connector Terminal Layout ............ 91                    .
PRECAUTIONS ....................................................... 22   .         ECM Terminals and Reference Value .................... 91                .
  Supplemental Restraint System (SRS) "AIR BAG"                                    CONSULT-II Function ............................................ 99      .
  and "SEAT BELT PRE-TENSIONER" ................... 22                   .                                                                                          H
                                                                                   Generic Scan Tool (GST) .................................... 110         .
  Precautions for On Board Diagnostic (OBD) System                                 CONSULT-II Reference Value in Data Monitor Mode
  of Engine ............................................................... 22
                                                                         .                                                                                  . 112
  Engine Fuel & Emission Control System .............. 23                .         Major Sensor Reference Graph in Data Monitor                                      I
  Precautions ........................................................... 24
                                                                         .         Mode .................................................................... 113
                                                                                                                                                            .
  Wiring Diagrams and Trouble Diagnosis ............... 25               .        TROUBLE DIAGNOSIS - SPECIFICATION VALUE 116                               .
PREPARATION ........................................................ 26  .         Description ........................................................... 116
                                                                                                                                                            .       J
  Special Service Tools ............................................ 26  .         Testing Condition ................................................. 116  .
  Commercial Service Tools ..................................... 26      .         Inspection Procedure ........................................... 116     .
ENGINE CONTROL SYSTEM ................................. 28               .         Diagnostic Procedure .......................................... 117      .
  System Diagram .................................................... 28 .                                                                                          K
                                                                                  TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
  Vacuum Hose Drawing .......................................... 29      .        DENT ...................................................................... 120
                                                                                                                                                            .
  System Chart ........................................................ 30
                                                                         .         Description ........................................................... 120
                                                                                                                                                            .
  Multiport Fuel Injection (MFI) System ................... 30           .         Diagnostic Procedure .......................................... 120      .       L
  Distributor Ignition (DI) System ............................. 32      .        POWER SUPPLY CIRCUIT FOR ECM .................. 121                       .
  Air Conditioning Cut Control .................................. 33     .         Wiring Diagram .................................................... 121  .
  Fuel Cut Control (at No Load and High Engine                                     Diagnostic Procedure .......................................... 122      .       M
  Speed) ................................................................... 33
                                                                         .        DTC P0031, P0032 HO2S1 HEATER .................... 126                    .
  Fast Idle Cam (FIC) ............................................... 34 .         Description ........................................................... 126
                                                                                                                                                            .
BASIC SERVICE PROCEDURE ............................. 35                 .         CONSULT-II Reference Value in Data Monitor Mode
  Idle Speed/Ignition Timing/Idle Mixture Ratio                                                                                                             . 126
  Adjustment ............................................................ 35
                                                                         .         On Board Diagnosis Logic ................................... 126         .
  Fuel Pressure Check ............................................. 45   .         DTC Confirmation Procedure .............................. 127            .
  Fuel Pressure Regulator Check ............................ 47          .         Wiring Diagram .................................................... 128  .
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 48                          .         Diagnostic Procedure .......................................... 129      .
  Introduction ........................................................... 48
                                                                         .         Removal and Installation ..................................... 130       .
  Two Trip Detection Logic ....................................... 48    .        DTC P0037, P0038 HO2S2 HEATER .................... 131                    .
  Emission-related Diagnostic Information ............... 49             .         Description ........................................................... 131
                                                                                                                                                            .
  Malfunction Indicator Lamp (MIL) .......................... 61         .         CONSULT-II Reference Value in Data Monitor Mode
  OBD System Operation Chart ............................... 62          .                                                                                  . 131
TROUBLE DIAGNOSIS ........................................... 67         .         On Board Diagnosis Logic ................................... 131         .
  Trouble Diagnosis Introduction .............................. 67       .         DTC Confirmation Procedure .............................. 132            .
  DTC Inspection Priority Chart ............................... 71       .         Wiring Diagram .................................................... 133  .
  Fail-safe Chart ....................................................... 72
                                                                         .

                                                                            EC-1
 Diagnostic Procedure .......................................... 134
                                                                   .       DTC P0127 IAT SENSOR ....................................... 179   .
 Removal and Installation ..................................... 135.        Component Description ....................................... 179 .
DTC P0101 MAF SENSOR .................................... 136      .        On Board Diagnosis Logic ................................... 179  .
 Component Description ....................................... 136 .        DTC Confirmation Procedure ............................... 180    .
 CONSULT-II Reference Value in Data Monitor Mode                            Wiring Diagram .................................................... 181
                                                                                                                                              .
                                                                   . 136    Diagnostic Procedure ........................................... 182
                                                                                                                                              .
 On Board Diagnosis Logic ................................... 136  .        Component Inspection ......................................... 183.
 DTC Confirmation Procedure .............................. 137     .       DTC P0128 THERMOSTAT FUNCTION ................ 184                 .
 Overall Function Check ....................................... 138.        On Board Diagnosis Logic ................................... 184  .
 Wiring Diagram .................................................... 139
                                                                   .        DTC Confirmation Procedure ............................... 184    .
 Diagnostic Procedure .......................................... 140
                                                                   .        Diagnostic Procedure ........................................... 185
                                                                                                                                              .
DTC P0102, P0103 MAF SENSOR ........................ 143           .       DTC P0132 HO2S1 ................................................ 186
                                                                                                                                              .
 Component Description ....................................... 143 .        Component Description ....................................... 186 .
 CONSULT-II Reference Value in Data Monitor Mode                            CONSULT-II Reference Value in Data Monitor Mode
                                                                   . 143                                                                      .186
 On Board Diagnosis Logic ................................... 143  .        On Board Diagnosis Logic ................................... 186  .
 DTC Confirmation Procedure .............................. 144     .        DTC Confirmation Procedure ............................... 187    .
 Wiring Diagram .................................................... 145
                                                                   .        Wiring Diagram .................................................... 188
                                                                                                                                              .
 Diagnostic Procedure .......................................... 146
                                                                   .        Diagnostic Procedure ........................................... 189
                                                                                                                                              .
DTC P0112, P0113 IAT SENSOR .......................... 149         .        Component Inspection ......................................... 190.
 Component Description ....................................... 149 .        Removal and Installation ...................................... 191
                                                                                                                                              .
 On Board Diagnosis Logic ................................... 149  .       DTC P0133 HO2S1 ................................................ 192
                                                                                                                                              .
 DTC Confirmation Procedure .............................. 150     .        Component Description ....................................... 192 .
 Wiring Diagram .................................................... 151
                                                                   .        CONSULT-II Reference Value in Data Monitor Mode
 Diagnostic Procedure .......................................... 152
                                                                   .                                                                          .192
DTC P0117, P0118 ECT SENSOR ......................... 154          .        On Board Diagnosis Logic ................................... 192  .
 Component Description ....................................... 154 .        DTC Confirmation Procedure ............................... 193    .
 CONSULT-II Reference Value in Data Monitor Mode                            Overall Function Check ........................................ 194
                                                                                                                                              .
                                                                   . 154    Wiring Diagram .................................................... 195
                                                                                                                                              .
 On Board Diagnosis Logic ................................... 154  .        Diagnostic Procedure ........................................... 196
                                                                                                                                              .
 DTC Confirmation Procedure .............................. 155     .        Component Inspection ......................................... 199.
 Wiring Diagram .................................................... 156
                                                                   .        Removal and Installation ...................................... 201
                                                                                                                                              .
 Diagnostic Procedure .......................................... 157
                                                                   .       DTC P0134 HO2S1 ................................................ 202
                                                                                                                                              .
 Component Inspection ......................................... 158.        Component Description ....................................... 202 .
DTC P0121 TP SENSOR ....................................... 159    .        CONSULT-II Reference Value in Data Monitor Mode
 Component Description ....................................... 159 .                                                                          .202
 CONSULT-II Reference Value in Data Monitor Mode                            On Board Diagnosis Logic ................................... 202  .
                                                                   . 159    DTC Confirmation Procedure ............................... 203    .
 On Board Diagnosis Logic ................................... 160  .        Overall Function Check ........................................ 203
                                                                                                                                              .
 DTC Confirmation Procedure .............................. 160     .        Wiring Diagram .................................................... 205
                                                                                                                                              .
 Wiring Diagram .................................................... 162
                                                                   .        Diagnostic Procedure ........................................... 206
                                                                                                                                              .
 Diagnostic Procedure .......................................... 163
                                                                   .        Component Inspection ......................................... 207.
 Component Inspection ......................................... 166.        Removal and Installation ...................................... 208
                                                                                                                                              .
DTC P0122, P0123 TP SENSOR ........................... 168         .       DTC P0138 HO2S2 ................................................ 209
                                                                                                                                              .
 Component Description ....................................... 168 .        Component Description ....................................... 209 .
 CONSULT-II Reference Value in Data Monitor Mode                            CONSULT-II Reference Value in Data Monitor Mode
                                                                   . 168                                                                      .209
 On Board Diagnosis Logic ................................... 168  .        On Board Diagnosis Logic ................................... 209  .
 DTC Confirmation Procedure .............................. 169     .        DTC Confirmation Procedure ............................... 210    .
 Wiring Diagram .................................................... 170
                                                                   .        Wiring Diagram .................................................... 211
                                                                                                                                              .
 Diagnostic Procedure .......................................... 171
                                                                   .        Diagnostic Procedure ........................................... 212
                                                                                                                                              .
 Component Inspection ......................................... 172.        Component Inspection ......................................... 213.
DTC P0125 ECT SENSOR ..................................... 174     .        Removal and Installation ...................................... 215
                                                                                                                                              .
 Component Description ....................................... 174 .       DTC P0139 HO2S2 ................................................ 216
                                                                                                                                              .
 On Board Diagnosis Logic ................................... 174  .        Component Description ....................................... 216 .
 DTC Confirmation Procedure .............................. 175     .        CONSULT-II Reference Value in Data Monitor Mode
 Wiring Diagram .................................................... 176
                                                                   .                                                                          .216
 Diagnostic Procedure .......................................... 177
                                                                   .        On Board Diagnosis Logic ................................... 216  .
 Component Inspection ......................................... 178.        DTC Confirmation Procedure ............................... 217    .

                                                                      EC-2
 Overall Function Check ....................................... 217
                                                                  .        Wiring Diagram .................................................... 264
                                                                                                                                                 .
 Wiring Diagram ................................................... 219
                                                                  .        Diagnostic Procedure .......................................... 265   .       A
 Diagnostic Procedure .......................................... 220
                                                                  .        Component Inspection ......................................... 267    .
 Component Inspection ........................................ 222.       DTC P0340 CMP SENSOR .................................... 268          .
 Removal and Installation ..................................... 224
                                                                  .        Component Description ....................................... 268     .       EC
DTC P0171 FUEL INJECTION SYSTEM FUNCTION 225                      .        On Board Diagnosis Logic ................................... 268      .
 On Board Diagnosis Logic .................................. 225  .        DTC Confirmation Procedure .............................. 269         .
 DTC Confirmation Procedure .............................. 225    .        Wiring Diagram .................................................... 270
                                                                                                                                                 .
 Wiring Diagram ................................................... 227
                                                                  .        Diagnostic Procedure .......................................... 272   .       C
 Diagnostic Procedure .......................................... 228
                                                                  .        Component Inspection ......................................... 273    .
 Component Inspection ........................................ 231.        Removal and Installation ..................................... 274    .
DTC P0172 FUEL INJECTION SYSTEM FUNCTION 232                      .       DTC P0400 EGR FUNCTION ................................ 275            .       D
 On Board Diagnosis Logic .................................. 232  .        Description ........................................................... 275
                                                                                                                                                 .
 DTC Confirmation Procedure .............................. 232    .        On Board Diagnosis Logic ................................... 276      .
 Wiring Diagram ................................................... 234
                                                                  .        DTC Confirmation Procedure .............................. 276         .       E
 Diagnostic Procedure .......................................... 235
                                                                  .        Overall Function Check ....................................... 277    .
 Component Inspection ........................................ 237.        Wiring Diagram .................................................... 279
                                                                                                                                                 .
DTC P0181 FTT SENSOR ..................................... 238    .        Diagnostic Procedure .......................................... 280   .
 Component Description ....................................... 238.        Component Inspection ......................................... 283    .       F
 On Board Diagnosis Logic .................................. 238  .        Removal and Installation ..................................... 284    .
 DTC Confirmation Procedure .............................. 238    .       DTC P0402 EGRC-BPT VALVE FUNCTION ......... 285                        .
 Wiring Diagram ................................................... 240
                                                                  .        Description ........................................................... 285
                                                                                                                                                 .       G
 Diagnostic Procedure .......................................... 241
                                                                  .        On Board Diagnosis Logic ................................... 285      .
 Component Inspection ........................................ 242.        DTC Confirmation Procedure .............................. 286         .
 Removal and Installation ..................................... 242
                                                                  .        Overall Function Check ....................................... 287    .       H
DTC P0182, P0183 FTT SENSOR ........................ 243          .        Diagnostic Procedure .......................................... 288   .
 Component Description ....................................... 243.        Component Inspection ......................................... 289    .
 On Board Diagnosis Logic .................................. 243  .       DTC P0405, P0406 EGRT SENSOR ..................... 291                 .
                                                                                                                                                          I
 DTC Confirmation Procedure .............................. 243    .        Component Description ....................................... 291     .
 Wiring Diagram ................................................... 244
                                                                  .        On Board Diagnosis Logic ................................... 291      .
 Diagnostic Procedure .......................................... 245
                                                                  .        DTC Confirmation Procedure .............................. 292         .
 Component inspection ........................................ 246.        Overall Function Check ....................................... 293    .       J
 Removal and Installation ..................................... 246
                                                                  .        Wiring Diagram .................................................... 294
                                                                                                                                                 .
DTC P0217 COOLANT OVERTEMPERATURE                                          Diagnostic Procedure .......................................... 295   .
ENRICHMENT PROTECTION ............................... 247         .        Component Inspection ......................................... 296    .       K
 On Board Diagnosis Logic .................................. 247  .        Removal and Installation ..................................... 296    .
 Overall Function Check ....................................... 247
                                                                  .       DTC P0420 THREE WAY CATALYST FUNCTION . 297
 Diagnostic Procedure .......................................... 248
                                                                  .        On Board Diagnosis Logic ................................... 297      .       L
 Main 11 Causes of Overheating .......................... 249     .        DTC Confirmation Procedure .............................. 297         .
 Component Inspection ........................................ 250.        Overall Function Check ....................................... 298    .
DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE,                              Diagnostic Procedure .......................................... 299   .
MULTIPLE CYLINDER MISFIRE ........................... 251         .       DTC P0441 EVAP CONTROL SYSTEM ................ 302                     .       M
 On Board Diagnosis Logic .................................. 251  .        System Description .............................................. 302 .
 DTC Confirmation Procedure .............................. 252    .        On Board Diagnosis Logic ................................... 302      .
 Diagnostic Procedure .......................................... 252
                                                                  .        DTC Confirmation Procedure .............................. 303         .
 Component Inspection ........................................ 257.        Overall Function Check ....................................... 303    .
 Removal and Installation ..................................... 258
                                                                  .        Diagnostic Procedure .......................................... 304   .
DTC P0327, P0328 KS .......................................... 259.       DTC P0442 EVAP CONTROL SYSTEM ................ 311                     .
 Component Description ....................................... 259.        On Board Diagnosis Logic ................................... 311      .
 On Board Diagnosis Logic .................................. 259  .        DTC Confirmation Procedure .............................. 312         .
 DTC Confirmation Procedure .............................. 259    .        Diagnostic Procedure .......................................... 314   .
 Wiring Diagram ................................................... 260
                                                                  .       DTC P0444, P0445 EVAP CANISTER PURGE VOL-
 Diagnostic Procedure .......................................... 261
                                                                  .       UME CONTROL SOLENOID VALVE ..................... 325                   .
 Component Inspection ........................................ 262.        Description ........................................................... 325
                                                                                                                                                 .
 Removal and Installation ..................................... 262
                                                                  .        CONSULT-II Reference Value in Data Monitor Mode
DTC P0335 CKP SENSOR (OBD) ........................ 263           .                                                                              . 325
 Component Description ....................................... 263.        On Board Diagnosis Logic ................................... 326      .
 On Board Diagnosis Logic .................................. 263  .        DTC Confirmation Procedure .............................. 326         .
 DTC Confirmation Procedure .............................. 263    .

                                                                     EC-3
 Wiring Diagram .................................................... 327 .        DTC Confirmation Procedure ............................... 388        .
 Diagnostic Procedure .......................................... 329     .        Overall Function Check ........................................ 389   .
DTC P0447 EVAP CANISTER VENT CONTROL                                              Wiring Diagram .................................................... 390
                                                                                                                                                        .
VALVE .................................................................... 331
                                                                         .        Diagnostic Procedure ........................................... 391  .
 Component Description ....................................... 331       .       DTC P0505 ISC SYSTEM ...................................... 393        .
 CONSULT-II Reference Value in Data Monitor Mode                                  Description ........................................................... 393
                                                                                                                                                        .
                                                                         . 331    CONSULT-II Reference Value in Data Monitor Mode
 On Board Diagnosis Logic ................................... 331        .                                                                              .393
 DTC Confirmation Procedure .............................. 331           .        On Board Diagnosis Logic ................................... 394      .
 Wiring Diagram .................................................... 332 .        DTC Confirmation Procedure ............................... 394        .
 Diagnostic Procedure .......................................... 333     .        Wiring Diagram .................................................... 395
                                                                                                                                                        .
DTC P0452 EVAP CONTROL SYSTEM PRESSURE                                            Diagnostic Procedure ........................................... 396  .
SENSOR ................................................................. 337
                                                                         .       DTC P0506 ISC SYSTEM ...................................... 398        .
 Component Description ....................................... 337       .        Description ........................................................... 398
                                                                                                                                                        .
 CONSULT-II Reference Value in Data Monitor Mode                                  CONSULT-II Reference Value in Data Monitor Mode
                                                                         . 337                                                                          .398
 On Board Diagnosis Logic ................................... 337        .        On Board Diagnosis Logic ................................... 398      .
 DTC Confirmation Procedure .............................. 338           .        DTC Confirmation Procedure ............................... 399        .
 Wiring Diagram .................................................... 339 .        Wiring Diagram .................................................... 400
                                                                                                                                                        .
 Diagnostic Procedure .......................................... 340     .        Diagnostic Procedure ........................................... 401  .
DTC P0453 EVAP CONTROL SYSTEM PRESSURE                                           DTC P0507 ISC SYSTEM ...................................... 403        .
SENSOR ................................................................. 344
                                                                         .        Description ........................................................... 403
                                                                                                                                                        .
 Component Description ....................................... 344       .        CONSULT-II Reference Value in Data Monitor Mode
 CONSULT-II Reference Value in Data Monitor Mode                                                                                                        .403
                                                                         . 344    On Board Diagnosis Logic ................................... 403      .
 On Board Diagnosis Logic ................................... 344        .        DTC Confirmation Procedure ............................... 404        .
 DTC Confirmation Procedure .............................. 345           .        Wiring Diagram .................................................... 405
                                                                                                                                                        .
 Wiring Diagram .................................................... 346 .        Diagnostic Procedure ........................................... 406  .
 Diagnostic Procedure .......................................... 347     .       DTC P0510 CTP SWITCH ...................................... 408        .
DTC P0455 EVAP CONTROL SYSTEM ................ 354                       .        Component Description ....................................... 408     .
 On Board Diagnosis Logic ................................... 354        .        On Board Diagnosis Logic ................................... 408      .
 DTC Confirmation Procedure .............................. 355           .        DTC Confirmation Procedure ............................... 408        .
 Diagnostic Procedure .......................................... 356     .        Overall Function Check ........................................ 409   .
DTC P0456 EVAP CONTROL SYSTEM ................ 366                       .        Wiring Diagram .................................................... 410
                                                                                                                                                        .
 On Board Diagnosis Logic ................................... 366        .        Diagnostic Procedure ........................................... 411  .
 DTC Confirmation Procedure .............................. 367           .       DTC P0605 ECM .................................................... 415 .
 Overall Function Check ....................................... 368      .        Component Description ....................................... 415     .
 Diagnostic Procedure .......................................... 369     .        On Board Diagnosis Logic ................................... 415      .
DTC P0460 FUEL LEVEL SENSOR ...................... 378                   .        DTC Confirmation Procedure ............................... 415        .
 Component Description ....................................... 378       .        Diagnostic Procedure ........................................... 416  .
 On Board Diagnostic Logic .................................. 378        .       DTC P1143 HO2S1 ................................................. 417  .
 DTC Confirmation Procedure .............................. 378           .        Component Description ....................................... 417     .
 Wiring Diagram .................................................... 379 .        CONSULT-II Reference Value in Data Monitor Mode
 Diagnostic Procedure .......................................... 380     .                                                                              .417
 Removal and Installation ..................................... 381      .        On Board Diagnosis Logic ................................... 417      .
DTC P0461 FUEL LEVEL SENSOR ...................... 382                   .        DTC Confirmation Procedure ............................... 418        .
 Component Description ....................................... 382       .        Overall Function Check ........................................ 418   .
 On Board Diagnostic Logic .................................. 382        .        Diagnostic Procedure ........................................... 419  .
 Overall Function Check ....................................... 382      .        Removal and Installation ...................................... 421   .
DTC P0462, P0463 FUEL LEVEL SENSOR ......... 384                         .       DTC P1144 HO2S1 ................................................. 422  .
 Component Description ....................................... 384       .        Component Description ....................................... 422     .
 On Board Diagnostic Logic .................................. 384        .        CONSULT-II Reference Value in Data Monitor Mode
 DTC Confirmation Procedure .............................. 384           .                                                                              .422
 Wiring Diagram .................................................... 385 .        On Board Diagnosis Logic ................................... 422      .
 Diagnostic Procedure .......................................... 386     .        DTC Confirmation Procedure ............................... 423        .
 Removal and Installation ..................................... 387      .        Overall Function Check ........................................ 423   .
DTC P0500 VSS ..................................................... 388  .        Diagnostic Procedure ........................................... 424  .
 Component Description ....................................... 388       .        Removal and Installation ...................................... 426   .
 On Board Diagnosis Logic ................................... 388        .

                                                                            EC-4
DTC P1146 HO2S2 ................................................ 427  .                                                                                . 469
 Component Description ....................................... 427    .        On Board Diagnosis Logic ................................... 470        .       A
 CONSULT-II Reference Value in Data Monitor Mode                               DTC Confirmation Procedure .............................. 470           .
                                                                      . 427    Wiring Diagram .................................................... 472 .
 On Board Diagnosis Logic .................................. 427      .        Diagnostic Procedure .......................................... 474     .       EC
 DTC Confirmation Procedure .............................. 428        .       DTC P1446 EVAP CANISTER VENT CONTROL
 Overall Function Check ....................................... 428   .       VALVE .................................................................... 479
                                                                                                                                                       .
 Wiring Diagram ................................................... 430
                                                                      .        Component Description ....................................... 479       .
 Diagnostic Procedure .......................................... 431  .        CONSULT-II Reference Value in Data Monitor Mode                                 C
 Removal and Installation ..................................... 433   .                                                                                . 479
DTC P1147 HO2S2 ................................................ 434  .        On Board Diagnosis Logic ................................... 479        .
 Component Description ....................................... 434    .        DTC Confirmation Procedure .............................. 479           .       D
 CONSULT-II Reference Value in Data Monitor Mode                               Diagnostic Procedure .......................................... 480     .
                                                                      . 434   DTC P1448 EVAP CANISTER VENT CONTROL
 On Board Diagnosis Logic .................................. 434      .       VALVE .................................................................... 483
                                                                                                                                                       .       E
 DTC Confirmation Procedure .............................. 435        .        Component Description ....................................... 483       .
 Overall Function Check ....................................... 435   .        CONSULT-II Reference Value in Data Monitor Mode
 Wiring Diagram ................................................... 437
                                                                      .                                                                                . 483
 Diagnostic Procedure .......................................... 438  .        On Board Diagnosis Logic ................................... 483        .       F
 Removal and Installation ..................................... 440   .        DTC Confirmation Procedure .............................. 484           .
DTC P1148 CLOSED LOOP CONTROL ............... 441                     .        Overall Function Check ....................................... 485      .
 On Board Diagnosis Logic .................................. 441      .        Diagnostic Procedure .......................................... 485     .       G
 DTC Confirmation Procedure .............................. 441        .       DTC P1456 EVAP CONTROL SYSTEM ................ 489                       .
 Overall Function Check ....................................... 441   .        On Board Diagnosis Logic ................................... 489        .
 Diagnostic Procedure .......................................... 442  .        DTC Confirmation Procedure .............................. 490           .       H
DTC P1217 ENGINE OVER TEMPERATURE ...... 443                          .        Overall Function Check ....................................... 491      .
 On Board Diagnosis Logic .................................. 443      .        Diagnostic Procedure .......................................... 492     .
 Overall Function Check ....................................... 443   .       DTC P1464 FUEL LEVEL SENSOR ...................... 501                   .
                                                                                                                                                                I
 Diagnostic Procedure .......................................... 444  .        Component Description ....................................... 501       .
 Main 11 Causes of Overheating .......................... 445         .        On Board Diagnostic Logic .................................. 501        .
DTC P1336 CKP SENSOR (OBD) ........................ 447               .        DTC Confirmation Procedure .............................. 501           .
 Component Description ....................................... 447    .        Wiring Diagram .................................................... 502 .       J
 On Board Diagnosis Logic .................................. 447      .        Diagnostic Procedure .......................................... 503     .
 DTC Confirmation Procedure .............................. 447        .        Removal and Installation ..................................... 503      .
 Wiring Diagram ................................................... 448
                                                                      .       DTC P1490 VACUUM CUT VALVE BYPASS VALVE 504                              .       K
 Diagnostic Procedure .......................................... 449  .        Description ........................................................... 504
                                                                                                                                                       .
DTC P1400 EGRC-SOLENOID VALVE ................. 452                   .        CONSULT-II Reference Value in Data Monitor Mode
 Component Description ....................................... 452    .                                                                                . 504   L
 CONSULT-II Reference Value in Data Monitor Mode                               On Board Diagnosis Logic ................................... 504        .
                                                                      . 452    DTC Confirmation Procedure .............................. 505           .
 On Board Diagnosis Logic .................................. 452      .        Wiring Diagram .................................................... 506 .
 DTC Confirmation Procedure .............................. 452        .        Diagnostic Procedure .......................................... 507     .       M
 Overall Function Check ....................................... 453   .       DTC P1491 VACUUM CUT VALVE BYPASS VALVE 510                              .
 Wiring Diagram ................................................... 454
                                                                      .        Description ........................................................... 510
                                                                                                                                                       .
 Diagnostic Procedure .......................................... 455  .        CONSULT-II Reference Value in Data Monitor Mode
DTC P1402 EGR FUNCTION ................................ 458           .                                                                                . 510
 Description .......................................................... 458
                                                                      .        On Board Diagnosis Logic ................................... 511        .
 On Board Diagnosis Logic .................................. 459      .        DTC Confirmation Procedure .............................. 511           .
 DTC Confirmation Procedure .............................. 459        .        Overall Function Check ....................................... 512      .
 Wiring Diagram ................................................... 462
                                                                      .        Wiring Diagram .................................................... 513 .
 Diagnostic Procedure .......................................... 463  .        Diagnostic Procedure .......................................... 514     .
DTC P1442 EVAP CONTROL SYSTEM ............... 467                     .       DTC P1706 PNP SWITCH ..................................... 520           .
 On Board Diagnosis Logic .................................. 467      .        Component Description ....................................... 520       .
 DTC Confirmation Procedure .............................. 468        .        CONSULT-II Reference Value in Data Monitor Mode
 Diagnostic Procedure .......................................... 468  .                                                                                . 520
DTC P1444 EVAP CANISTER PURGE VOLUME                                           On Board Diagnosis Logic ................................... 520        .
CONTROL SOLENOID VALVE ............................. 469              .        DTC Confirmation Procedure .............................. 521           .
 Description .......................................................... 469
                                                                      .        Overall Function Check ....................................... 521      .
 CONSULT-II Reference Value in Data Monitor Mode

                                                                         EC-5
  Wiring Diagram .................................................... 522.         IACV-AAC Valve .................................................. 574    .
  Diagnostic Procedure For M/T Models ................ 523               .         Injector ................................................................. 574
                                                                                                                                                            .
IGNITION SIGNAL ................................................. 525    .         Resistor ................................................................ 575
                                                                                                                                                            .
  Component Description ....................................... 525      .         Throttle Position Sensor ....................................... 575     .
  CONSULT-II Reference Value in Data Monitor Mode                                  Heated Oxygen Sensor 1 Heater ......................... 575              .
                                                                         . 525     Calculated Load Value ......................................... 575      .
  Wiring Diagram .................................................... 526.         Intake Air Temperature Sensor ............................ 575           .
  Diagnostic Procedure .......................................... 527    .         Heated Oxygen Sensor 2 Heater ......................... 575              .
  Removal and Installation ..................................... 531     .         Crankshaft Position Sensor (OBD) ...................... 575              .
INJECTOR CIRCUIT .............................................. 532      .         Fuel Tank Temperature Sensor ............................ 575            .
  Component Description ....................................... 532      .
  CONSULT-II Reference Value in Data Monitor Mode                                                                  VG33E
                                                                         . 532
  Wiring Diagram .................................................... 533.       INDEX FOR DTC .................................................... 576      .
  Diagnostic Procedure .......................................... 534    .         Alphabetical Index ................................................ 576   .
  Removal and Installation ..................................... 536     .         DTC No. Index ..................................................... 579   .
START SIGNAL ..................................................... 537   .       PRECAUTIONS ...................................................... 582      .
  CONSULT-II Reference Value in Data Monitor Mode                                  Precautions for Supplemental Restraint System
                                                                         . 537     (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
  Wiring Diagram .................................................... 538.         SIONER" .............................................................. 582.
  Diagnostic Procedure .......................................... 539    .         On Board Diagnostic (OBD) System of Engine and
FUEL PUMP CIRCUIT ........................................... 541        .         A/T ....................................................................... 582
                                                                                                                                                             .
  Description ........................................................... 541
                                                                         .         Precautions .......................................................... 583.
  CONSULT-II Reference Value in Data Monitor Mode                                  Wiring Diagrams and Trouble Diagnosis .............. 586                  .
                                                                         . 541   PREPARATION ...................................................... 587      .
  Wiring Diagram .................................................... 542.         Special Service Tools ........................................... 587     .
  Diagnostic Procedure .......................................... 543    .         Commercial Service Tools ................................... 587          .
  Removal and Installation ..................................... 545     .       ENGINE CONTROL SYSTEM ................................ 589                  .
POWER STEERING OIL PRESSURE SWITCH .... 546                              .         System Diagram .................................................. 589     .
  Component Description ....................................... 546      .         Vacuum Hose Drawing ........................................ 590          .
  CONSULT-II Reference Value in Data Monitor Mode                                  System Chart ....................................................... 591  .
                                                                         . 546     Multiport Fuel Injection (MFI) System .................. 591              .
  Wiring Diagram .................................................... 547.         Distributor Ignition (DI) System ............................ 593         .
  Diagnostic Procedure .......................................... 548    .         Air Conditioner Cut Control .................................. 594        .
IACV-FICD SOLENOID VALVE ............................. 550               .         Fuel Cut Control (at No Load and High Engine Load)                        .594
  Component Description ....................................... 550      .       BASIC SERVICE PROCEDURE ............................ 596                    .
  Wiring Diagram .................................................... 551.         Idle Speed/Ignition Timing/Idle Mixture Ratio
  Diagnostic Procedure .......................................... 552    .         Adjustment ........................................................... 596.
DATA LINK CONNECTOR ..................................... 555            .         Fast Idle Cam (FIC) Inspection and Adjustment .. 606                      .
  Wiring Diagram .................................................... 555.         Fuel Pressure Check ........................................... 608       .
EVAPORATIVE EMISSION SYSTEM .................... 556                     .         Fuel Pressure Regulator Check ........................... 609             .
  Description ........................................................... 556
                                                                         .       ON BOARD DIAGNOSTIC (OBD) SYSTEM .......... 610                             .
  Component Inspection ......................................... 559     .         Introduction .......................................................... 610
                                                                                                                                                             .
  How To Detect Fuel Vapor Leakage .................... 560              .         Two Trip Detection Logic ...................................... 610       .
ON BOARD REFUELING VAPOR RECOVERY                                                  Emission-related Diagnostic Information ............. 611                 .
(ORVR) ................................................................... 562
                                                                         .         Malfunction Indicator Lamp (MIL) ........................ 625             .
  System Description .............................................. 562  .         OBD System Operation Chart .............................. 625             .
  Diagnostic Procedure .......................................... 563    .       TROUBLE DIAGNOSIS ......................................... 631             .
POSITIVE CRANKCASE VENTILATION .............. 572                        .         Trouble Diagnosis Introduction ............................ 631           .
  Description ........................................................... 572
                                                                         .         DTC Inspection Priority Chart .............................. 636          .
  Inspection ............................................................ 572
                                                                         .         Fail-safe Chart ..................................................... 637 .
SERVICE DATA AND SPECIFICATIONS (SDS) ... 574                            .         Basic Inspection ................................................... 637  .
  Fuel Pressure Regulator ...................................... 574     .         Symptom Matrix Chart ......................................... 650        .
  Idle Speed and Ignition Timing ............................ 574        .         Engine Control Component Parts Location .......... 654                    .
  Ignition Coil .......................................................... 574
                                                                         .         Circuit Diagram .................................................... 657  .
  Mass Air Flow Sensor .......................................... 574    .         ECM Harness Connector Terminal Layout ........... 658                     .
  Engine Coolant Temperature Sensor .................. 574               .         ECM Terminals and Reference Value .................. 658                  .
  EGR Temperature Sensor ................................... 574         .         CONSULT-II Function .......................................... 666        .
  Fuel Pump ........................................................... 574
                                                                         .         Generic Scan Tool (GST) Function ...................... 677               .

                                                                            EC-6
 CONSULT-II Reference Value in Data Monitor Mode                                  Wiring Diagram .................................................... 727
                                                                                                                                                    .
                                                                         . 679    Diagnostic Procedure .......................................... 728
                                                                                                                                                    .       A
 Major Sensor Reference Graph in Data Monitor                                     Component Inspection ......................................... 729.
 Mode ................................................................... 681
                                                                         .       DTC P0117, P0118 ECT SENSOR ........................ 730           .
TROUBLE DIAGNOSIS - SPECIFICATION VALUE 684                              .        Component Description ....................................... 730



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