Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti G20 P11 1999-2002 Approved G20-P11-2000 ec

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                                                                                                                                                                                  EXIT




                                                                                       ENGINE CONTROL SYSTEM                                                                GI




                                                                                                   SECTION                       EC                                         MA

                                                                                                                                                                            EM

                                                                                                                                                                            LC




                                                                 CONTENTS                                                                                                   FE


TROUBLE DIAGNOSIS - INDEX ....................................8                          Introduction ................................................................67
                                                                                                                                                                            CL
  Alphabetical & P No. Index for DTC ...........................8                        Two Trip Detection Logic ...........................................67
PRECAUTIONS .............................................................14              Emission-related Diagnostic Information ...................68                      MT
  Supplemental Restraint System (SRS) AIR                                                Malfunction Indicator Lamp (MIL)..............................81
  BAG and SEAT BELT PRE-TENSIONER.............14                                         OBD System Operation Chart ...................................83
  Precautions for On Board Diagnostic (OBD)                                              CONSULT-II ...............................................................88       AT
  System of Engine and A/T.........................................14                    Generic Scan Tool (GST) ........................................100
  Engine Fuel & Emission Control System ..................15                           TROUBLE DIAGNOSIS - INTRODUCTION................102
  Precautions ................................................................16         Introduction ..............................................................102
                                                                                                                                                                            AX
  Wiring Diagrams and Trouble Diagnosis...................17                             Work Flow................................................................104
PREPARATION .............................................................18            TROUBLE DIAGNOSIS - BASIC INSPECTION .........106                                    SU
  Special Service Tools ................................................18               Basic Inspection.......................................................106
  Commercial Service Tools .........................................18                 TROUBLE DIAGNOSIS - GENERAL
ENGINE AND EMISSION CONTROL OVERALL                                                    DESCRIPTION .............................................................122         BR
SYSTEM.........................................................................20        DTC Inspection Priority Chart..................................122
  Engine Control Component Parts Location...............20                               Fail-safe Chart .........................................................123
  Circuit Diagram ..........................................................24           Symptom Matrix Chart.............................................124               ST
  System Diagram ........................................................26              CONSULT-II Reference Value in Data Monitor
  Vacuum Hose Drawing ..............................................27                   Mode ........................................................................128
                                                                                                                                                                            RS
  System Chart .............................................................28           Major Sensor Reference Graph in Data Monitor
ENGINE AND EMISSION BASIC CONTROL                                                        Mode ........................................................................130
SYSTEM DESCRIPTION ...............................................29                     ECM Terminals and Reference Value .....................133                         BT
  Multiport Fuel Injection (MFI) System .......................29                      TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..141
  Distributor Ignition (DI) System .................................31                   Description ...............................................................141
  Air Conditioning Cut Control......................................32                   Testing Condition .....................................................141         HA
  Fuel Cut Control (at no load & high engine                                             Inspection Procedure...............................................141
  speed) ........................................................................33      Diagnostic Procedure ..............................................142
  Evaporative Emission System ...................................33                    TROUBLE DIAGNOSIS FOR INTERMITTENT
                                                                                                                                                                            SC
  Positive Crankcase Ventilation ..................................48                  INCIDENT.....................................................................145
BASIC SERVICE PROCEDURE ...................................50                            Description ...............................................................145     EL
  Fuel Pressure Release ..............................................50                 Diagnostic Procedure ..............................................145
  Fuel Pressure Check .................................................50              TROUBLE DIAGNOSIS FOR POWER SUPPLY........146
  Fuel Pressure Regulator Check ................................51                       Main Power Supply and Ground Circuit..................146                          IDX
  Injector .......................................................................51   DTC P0100 MASS AIR FLOW SENSOR (MAFS)......152
  Idle Speed/Ignition Timing/Idle Mixture Ratio                                          Component Description ...........................................152
  Adjustment .................................................................53         CONSULT-II Reference Value in Data Monitor
  Idle Air Volume Learning ...........................................65                 Mode ........................................................................152
ON BOARD DIAGNOSTIC SYSTEM                                                               ECM Terminals and Reference Value .....................152
DESCRIPTION ...............................................................67            On Board Diagnosis Logic.......................................153
                                                                                                                                                                          EXIT


                                                     CONTENTS                                  (Cont'd)
  DTC Confirmation Procedure ..................................153                     CONSULT-II Reference Value in Data Monitor
  Overall Function Check ...........................................155                Mode ........................................................................197
  Wiring Diagram ........................................................156           ECM Terminals and Reference Value .....................197
  Diagnostic Procedure ..............................................157               On Board Diagnosis Logic.......................................198
  Component Inspection.............................................160                 DTC Confirmation Procedure ..................................198
DTC P0105 ABSOLUTE PRESSURE SENSOR ........161                                         Overall Function Check ...........................................199
  Component Description ...........................................161                 Wiring Diagram ........................................................200
  On Board Diagnosis Logic.......................................161                   Diagnostic Procedure ..............................................201
  DTC Confirmation Procedure ..................................161                     Component Inspection.............................................203
  Wiring Diagram ........................................................162         DTC P0131 FRONT HEATED OXYGEN SENSOR
  Diagnostic Procedure ..............................................163             (FRONT HO2S) (LEAN SHIFT MONITORING) ..........205
DTC P0110 INTAKE AIR TEMPERATURE                                                       Component Description ...........................................205
SENSOR ......................................................................166       CONSULT-II Reference Value in Data Monitor
  Component Description ...........................................166                 Mode ........................................................................205
  On Board Diagnosis Logic.......................................166                   ECM Terminals and Reference Value .....................205
  DTC Confirmation Procedure ..................................166                     On Board Diagnosis Logic.......................................206
  Wiring Diagram ........................................................168           DTC Confirmation Procedure ..................................206
  Diagnostic Procedure ..............................................169               Overall Function Check ...........................................207
  Component Inspection.............................................171                 Diagnostic Procedure ..............................................207
DTC P0115 ENGINE COOLANT TEMPERATURE                                                   Component Inspection.............................................209
SENSOR (ECTS) (CIRCUIT) .......................................172                   DTC P0132 FRONT HEATED OXYGEN SENSOR
  Component Description ...........................................172               (FRONT HO2S) (RICH SHIFT MONITORING) ...........211
  CONSULT-II Reference Value in Data Monitor                                           Component Description ...........................................211
  Mode ........................................................................172     CONSULT-II Reference Value in Data Monitor
  On Board Diagnosis Logic.......................................172                   Mode ........................................................................211
  DTC Confirmation Procedure ..................................173                     ECM Terminals and Reference Value .....................211
  Wiring Diagram ........................................................174           On Board Diagnosis Logic.......................................212
  Diagnostic Procedure ..............................................175               DTC Confirmation Procedure ..................................212
  Component Inspection.............................................177                 Overall Function Check ...........................................213
DTC P0120 THROTTLE POSITION SENSOR ...........178                                      Diagnostic Procedure ..............................................214
  Component Description ...........................................178                 Component Inspection.............................................216
  CONSULT-II Reference Value in Data Monitor                                         DTC P0133 FRONT HEATED OXYGEN SENSOR
  Mode ........................................................................178   (FRONT HO2S) (RESPONSE MONITORING)............218
  ECM Terminals and Reference Value .....................179                           Component Description ...........................................218
  On Board Diagnosis Logic.......................................179                   CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................180                     Mode ........................................................................218
  Wiring Diagram ........................................................184           ECM Terminals and Reference Value .....................218
  Diagnostic Procedure ..............................................185               On Board Diagnosis Logic.......................................219
  Component Inspection.............................................189                 DTC Confirmation Procedure ..................................219
DTC P0125 ENGINE COOLANT TEMPERATURE                                                   Overall Function Check ...........................................220
(ECT) SENSOR............................................................191            Wiring Diagram ........................................................221
  Component Description ...........................................191                 Diagnostic Procedure ..............................................222
  CONSULT-II Reference Value in Data Monitor                                           Component Inspection.............................................225
  Mode ........................................................................191   DTC P0134 FRONT HEATED OXYGEN SENSOR
  On Board Diagnosis Logic.......................................191                 (FRONT HO2S) (HIGH VOLTAGE).............................227
  DTC Confirmation Procedure ..................................192                     Component Description ...........................................227
  Wiring Diagram ........................................................193           CONSULT-II Reference Value in Data Monitor
  Diagnostic Procedure ..............................................194               Mode ........................................................................227
  Component Inspection.............................................196                 ECM Terminals and Reference Value .....................227
DTC P0130 FRONT HEATED OXYGEN SENSOR                                                   On Board Diagnosis Logic.......................................228
(FRONT HO2S) (CIRCUIT)..........................................197                    DTC Confirmation Procedure ..................................228
  Component Description ...........................................197                 Wiring Diagram ........................................................229




                                                                                EC-2
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                                                     CONTENTS                                  (Cont'd)
  Diagnostic Procedure ..............................................230               CONSULT-II Reference Value in Data Monitor                                         GI
  Component Inspection.............................................231                 Mode ........................................................................262
DTC P0135 FRONT HEATED OXYGEN SENSOR                                                   ECM Terminals and Reference Value .....................262
HEATER.......................................................................233       On Board Diagnosis Logic.......................................262                 MA
  Description ...............................................................233       DTC Confirmation Procedure ..................................263
  CONSULT-II Reference Value in Data Monitor                                           Overall Function Check ...........................................263
  Mode ........................................................................233     Wiring Diagram ........................................................264
                                                                                                                                                                          EM
  ECM Terminals and Reference Value .....................233                           Diagnostic Procedure ..............................................265
  On Board Diagnosis Logic.......................................233                   Component Inspection.............................................266               LC
  DTC Confirmation Procedure ..................................234                   DTC P0141 REAR HEATED OXYGEN SENSOR
  Wiring Diagram ........................................................235         HEATER.......................................................................268
  Diagnostic Procedure ..............................................236               Description ...............................................................268
  Component Inspection.............................................237                 CONSULT-II Reference Value in Data Monitor
DTC P0137 REAR HEATED OXYGEN SENSOR                                                    Mode ........................................................................268
(REAR HO2S) (MIN. VOLTAGE MONITORING)........238                                       ECM Terminals and Reference Value .....................268                         FE
  Component Description ...........................................238                 On Board Diagnosis Logic.......................................268
  CONSULT-II Reference Value in Data Monitor                                           DTC Confirmation Procedure ..................................269                   CL
  Mode ........................................................................238     Wiring Diagram ........................................................270
  ECM Terminals and Reference Value .....................238                           Diagnostic Procedure ..............................................271
  On Board Diagnosis Logic.......................................238                   Component Inspection.............................................272               MT
  DTC Confirmation Procedure ..................................239                   DTC P0171 FUEL INJECTION SYSTEM
  Overall Function Check ...........................................239              FUNCTION (LEAN SIDE) ............................................273
  Wiring Diagram ........................................................240           On Board Diagnosis Logic.......................................273                 AT
  Diagnostic Procedure ..............................................241               DTC Confirmation Procedure ..................................273
  Component Inspection.............................................244                 Wiring Diagram ........................................................275
                                                                                                                                                                          AX
DTC P0138 REAR HEATED OXYGEN SENSOR                                                    Diagnostic Procedure ..............................................276
(REAR HO2S) (MAX. VOLTAGE MONITORING) ......246                                      DTC P0172 FUEL INJECTION SYSTEM
  Component Description ...........................................246               FUNCTION (RICH SIDE) .............................................280                SU
  CONSULT-II Reference Value in Data Monitor                                           On Board Diagnosis Logic.......................................280
  Mode ........................................................................246     DTC Confirmation Procedure ..................................280
  ECM Terminals and Reference Value .....................246                           Wiring Diagram ........................................................282         BR
  On Board Diagnosis Logic.......................................246                   Diagnostic Procedure ..............................................283
  DTC Confirmation Procedure ..................................247                   DTC P0180 FUEL TANK TEMPERATURE
  Overall Function Check ...........................................247              SENSOR ......................................................................287
                                                                                                                                                                          ST
  Wiring Diagram ........................................................248           Component Description ...........................................287
  Diagnostic Procedure ..............................................249               On Board Diagnosis Logic.......................................287                 RS
  Component Inspection.............................................252                 DTC Confirmation Procedure ..................................287
DTC P0139 REAR HEATED OXYGEN SENSOR                                                    Wiring Diagram ........................................................289
(REAR HO2S) (RESPONSE MONITORING)..............254                                     Diagnostic Procedure ..............................................290             BT
  Component Description ...........................................254                 Component Inspection.............................................291
  CONSULT-II Reference Value in Data Monitor                                         DTC P0217 COOLANT OVERTEMPERATURE
  Mode ........................................................................254   ENRICHMENT PROTECTION.....................................292                        HA
  ECM Terminals and Reference Value .....................254                           System Description..................................................292
  On Board Diagnosis Logic.......................................254                   CONSULT-II Reference Value in Data Monitor
                                                                                                                                                                          SC
  DTC Confirmation Procedure ..................................255                     Mode ........................................................................292
  Overall Function Check ...........................................255                ECM Terminals and Reference Value .....................293
  Wiring Diagram ........................................................256           On Board Diagnosis Logic.......................................293                 EL
  Diagnostic Procedure ..............................................257               Possible Cause........................................................293
  Component Inspection.............................................260                 Overall Function Check ...........................................294
DTC P0140 REAR HEATED OXYGEN SENSOR                                                    Wiring Diagram ........................................................297         IDX
(REAR HO2S) (HIGH VOLTAGE) ...............................262                          Diagnostic Procedure ..............................................298
  Component Description ...........................................262                 Main 12 Causes of Overheating..............................309




                                                                                EC-3
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                                                     CONTENTS                                   (Cont'd)
DTC P0300 - P0304 NO. 4 - 1 CYLINDER                                                    Diagnostic Procedure ..............................................349
MISFIRE, MULTIPLE CYLINDER MISFIRE ...............310                                 DTC P0420 THREE WAY CATALYST FUNCTION ...352
   On Board Diagnosis Logic.......................................310                   On Board Diagnosis Logic.......................................352
   DTC Confirmation Procedure ..................................310                     DTC Confirmation Procedure ..................................352
   Diagnostic Procedure ..............................................311               Overall Function Check ...........................................353
   Component Inspection.............................................316                 Diagnostic Procedure ..............................................353
DTC P0325 KNOCK SENSOR (KS) ...........................317                            DTC P0440 EVAP CONTROL SYSTEM (SMALL
   Component Description ...........................................317               LEAK) (NEGATIVE PRESSURE)................................356
   ECM Terminals and Reference Value .....................317                           On Board Diagnosis Logic.......................................356
   On Board Diagnosis Logic.......................................317                   Possible Cause........................................................356
   DTC Confirmation Procedure ..................................317                     DTC Confirmation Procedure ..................................357
   Wiring Diagram ........................................................318           Diagnostic Procedure ..............................................358
   Diagnostic Procedure ..............................................319             DTC P0443 EVAP CANISTER PURGE VOLUME
   Component Inspection.............................................320               CONTROL SOLENOID VALVE (CIRCUIT).................370
DTC P0335 CRANKSHAFT POSITION SENSOR                                                    Description ...............................................................370
(CKPS) (OBD)..............................................................321           CONSULT-II Reference Value in Data Monitor
   Component Description ...........................................321                 Mode ........................................................................370
   ECM Terminals and Reference Value .....................321                           ECM Terminals and Reference Value .....................371
   On Board Diagnosis Logic.......................................321                   On Board Diagnosis Logic.......................................371
   DTC Confirmation Procedure ..................................322                     Possible Cause........................................................371
   Wiring Diagram ........................................................323           DTC Confirmation Procedure ..................................372
   Diagnostic Procedure ..............................................324               Wiring Diagram ........................................................373
   Component Inspection.............................................326                 Diagnostic Procedure ..............................................374
DTC P0340 CAMSHAFT POSITION SENSOR                                                    DTC P0446 EVAPORATIVE EMISSION (EVAP)
(CMPS).........................................................................327    CANISTER VENT CONTROL VALVE (CIRCUIT) ......377
   Component Description ...........................................327                 Component Description ...........................................377
   ECM Terminals and Reference Value .....................327                           CONSULT-II Reference Value in Data Monitor
   On Board Diagnosis Logic.......................................328                   Mode ........................................................................377
   DTC Confirmation Procedure ..................................328                     ECM Terminals and Reference Value .....................377
   Wiring Diagram ........................................................330           On Board Diagnosis Logic.......................................377
   Diagnostic Procedure ..............................................331               Possible Cause........................................................378
   Component Inspection.............................................334                 DTC Confirmation Procedure ..................................378
DTC P0400 EGR FUNCTION (CLOSE)......................335                                 Wiring Diagram ........................................................379
   Description ...............................................................335       Diagnostic Procedure ..............................................380
   CONSULT-II Reference Value in Data Monitor                                         DTC P0450 EVAPORATIVE EMISSION (EVAP)
   Mode ........................................................................336   CONTROL SYSTEM PRESSURE SENSOR ..............384
   ECM Terminals and Reference Value .....................336                           Component Description ...........................................384
   On Board Diagnosis Logic.......................................336                   CONSULT-II Reference Value in Data Monitor
   Possible Cause........................................................337            Mode ........................................................................384
   DTC Confirmation Procedure ..................................337                     ECM Terminals and Reference Value .....................384
   Wiring Diagram ........................................................339           On Board Diagnosis Logic.......................................385
   Diagnostic Procedure ..............................................340               Possible Cause........................................................385
DTC P0403 EGR VOLUME CONTROL VALVE                                                      DTC Confirmation Procedure ..................................385
(CIRCUIT).....................................................................345       Wiring Diagram ........................................................387
   Description ...............................................................345       Diagnostic Procedure ..............................................388
   CONSULT-II Reference Value in Data Monitor                                         DTC P0455 EVAP CONTROL SYSTEM (GROSS
   Mode ........................................................................346   LEAK)...........................................................................397
   ECM Terminals and Reference Value .....................346                           On Board Diagnosis Logic.......................................397
   On Board Diagnosis Logic.......................................346                   Possible Cause........................................................397
   Possible Cause........................................................347            DTC Confirmation Procedure ..................................398
   DTC Confirmation Procedure ..................................347                     Diagnostic Procedure ..............................................399
   Wiring Diagram ........................................................348




                                                                                 EC-4
                                                                                                                                                                                EXIT


                                                     CONTENTS                                  (Cont'd)
DTC P0460 FUEL LEVEL SENSOR FUNCTION                                                   System Description..................................................442            GI
(SLOSH).......................................................................409      ECM Terminals and Reference Value .....................442
  Component Description ...........................................409                 On Board Diagnosis Logic.......................................442
  ECM Terminals and Reference Value .....................409                           DTC Confirmation Procedure ..................................442                   MA
  On Board Diagnostic Logic......................................409                   Wiring Diagram ........................................................443
  Possible Cause........................................................409            Diagnostic Procedure ..............................................444
  DTC Confirmation Procedure ..................................410                   DTC P0605 ECM .........................................................445
                                                                                                                                                                          EM
  Wiring Diagram ........................................................411           Component Description ...........................................445
  Diagnostic Procedure ..............................................412               On Board Diagnosis Logic.......................................445                 LC
DTC P0461 FUEL LEVEL SENSOR FUNCTION .......414                                        DTC Confirmation Procedure ..................................445
  Component Description ...........................................414                 Diagnostic Procedure ..............................................446
  On Board Diagnostic Logic......................................414                 DTC P1126 THERMOSTAT FUNCTION.....................447
  Possible Cause........................................................414            On Board Diagnosis Logic.......................................447
  Overall Function Check ...........................................414                Possible Cause........................................................447
DTC P0464 FUEL LEVEL SENSOR CIRCUIT ...........416                                     DTC Confirmation Procedure ..................................447                   FE
  Component Description ...........................................416                 Diagnostic Procedure ..............................................448
  ECM Terminals and Reference Value .....................416                         DTC P1148 CLOSED LOOP CONTROL ....................449                                CL
  On Board Diagnostic Logic......................................416                   On Board Diagnosis Logic.......................................449
  Possible Cause........................................................416            DTC Confirmation Procedure ..................................449
  DTC Confirmation Procedure ..................................417                     Overall Function Check ...........................................450              MT
  Wiring Diagram ........................................................418           Diagnostic Procedure ..............................................450
  Diagnostic Procedure ..............................................419             DTC P1217 ENGINE OVER TEMPERATURE
DTC P0500 VEHICLE SPEED SENSOR (VSS) .........421                                    (OVERHEAT) ...............................................................451        AT
  Component Description ...........................................421                 System Description..................................................451
  ECM Terminals and Reference Value .....................421                           CONSULT-II Reference Value in Data Monitor
                                                                                                                                                                          AX
  On Board Diagnosis Logic.......................................421                   Mode ........................................................................451
  DTC Confirmation Procedure ..................................421                     ECM Terminals and Reference Value .....................452
  Overall Function Check ...........................................422                On Board Diagnosis Logic.......................................452                 SU
  Wiring Diagram ........................................................423           Overall Function Check ...........................................453
  Diagnostic Procedure ..............................................424               Wiring Diagram ........................................................454
DTC P0505 IDLE AIR CONTROL VALVE (IACV) -                                              Diagnostic Procedure ..............................................455             BR
AUXILIARY AIR CONTROL (AAC) VALVE ...............425                                   Main 12 Causes of Overheating..............................467
  Description ...............................................................425       Component Inspection.............................................467
  CONSULT-II Reference Value in Data Monitor                                         DTC P1320 IGNITION SIGNAL...................................469
                                                                                                                                                                          ST
  Mode ........................................................................426     Component Description ...........................................469
  ECM Terminals and Reference Value .....................426                           CONSULT-II Reference Value in Data Monitor                                         RS
  On Board Diagnosis Logic.......................................426                   Mode ........................................................................469
  DTC Confirmation Procedure ..................................426                     ECM Terminals and Reference Value .....................469
  Wiring Diagram ........................................................428           On Board Diagnosis Logic.......................................470                 BT
  Diagnostic Procedure ..............................................429               DTC Confirmation Procedure ..................................470
DTC P0510 CLOSED THROTTLE POSITION                                                     Wiring Diagram ........................................................471
SWITCH .......................................................................434      Diagnostic Procedure ..............................................472             HA
  Component Description ...........................................434                 Component Inspection.............................................475
  CONSULT-II Reference Value in Data Monitor                                         DTC P1336 CRANKSHAFT POSITION SENSOR
                                                                                                                                                                          SC
  Mode ........................................................................434   (CKPS) (OBD) (COG)..................................................476
  ECM Terminals and Reference Value .....................434                           Component Description ...........................................476
  On Board Diagnosis Logic.......................................434                   ECM Terminals and Reference Value .....................476                         EL
  DTC Confirmation Procedure ..................................435                     On Board Diagnosis Logic.......................................476
  Overall Function Check ...........................................435                DTC Confirmation Procedure ..................................477
  Wiring Diagram ........................................................436           Wiring Diagram ........................................................478         IDX
  Diagnostic Procedure ..............................................437               Diagnostic Procedure ..............................................479
DTC P0600 A/T CONTROL.........................................442                      Component Inspection.............................................481




                                                                                EC-5
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                                                     CONTENTS                                   (Cont'd)
DTC P1401 EGR TEMPERATURE SENSOR.............482                                        Overall Function Check ...........................................523
  Component Description ...........................................482                  Diagnostic Procedure ..............................................525
  On Board Diagnosis Logic.......................................482                 DTC P1448 EVAPORATIVE EMISSION (EVAP)
  Possible Cause........................................................482          CANISTER VENT CONTROL VALVE (OPEN)...........534
  DTC Confirmation Procedure ..................................483                      Component Description ...........................................534
  Wiring Diagram ........................................................485            CONSULT-II Reference Value in Data Monitor
  Diagnostic Procedure ..............................................486                Mode ........................................................................534
DTC P1402 EGR FUNCTION (OPEN) ........................490                               ECM Terminals and Reference Value .....................534
  Description ...............................................................490        On Board Diagnosis Logic.......................................534
  CONSULT-II Reference Value in Data Monitor                                            Possible Cause........................................................535
  Mode ........................................................................491      DTC Confirmation Procedure ..................................535
  ECM Terminals and Reference Value .....................491                            Overall Function Check ...........................................536
  On Board Diagnosis Logic.......................................491                    Wiring Diagram ........................................................537
  Possible Cause........................................................492             Diagnostic Procedure ..............................................538
  DTC Confirmation Procedure ..................................492                   DTC P1464 FUEL LEVEL SENSOR CIRCUIT
  Wiring Diagram ........................................................494         (GROUND SIGNAL) ....................................................543
  Diagnostic Procedure ..............................................495                Component Description ...........................................543
DTC P1440 EVAP CONTROL SYSTEM (SMALL                                                    ECM Terminals and Reference Value .....................543
LEAK) (POSITIVE PRESSURE) .................................500                          On Board Diagnostic Logic......................................543
  On Board Diagnosis Logic.......................................500                    Possible Cause........................................................543
  Possible Cause........................................................500             DTC Confirmation Procedure ..................................544
  DTC Confirmation Procedure ..................................501                      Wiring Diagram ........................................................545
  Diagnostic Procedure ..............................................501                Diagnostic Procedure ..............................................546
DTC P1444 EVAP CANISTER PURGE VOLUME                                                 DTC P1490 VACUUM CUT VALVE BYPASS
CONTROL SOLENOID VALVE...................................502                         VALVE (CIRCUIT)........................................................547
  Description ...............................................................502        Description ...............................................................547
  CONSULT-II Reference Value in Data Monitor                                            CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................502      Mode ........................................................................547
  ECM Terminals and Reference Value .....................503                            ECM Terminals and Reference Value .....................547
  On Board Diagnosis Logic.......................................503                    On Board Diagnosis Logic.......................................548
  Possible Cause........................................................503             Possible Cause........................................................548
  DTC Confirmation Procedure ..................................504                      DTC Confirmation Procedure ..................................548
  Wiring Diagram ........................................................505            Wiring Diagram ........................................................549
  Diagnostic Procedure ..............................................506                Diagnostic Procedure ..............................................550
DTC P1446 EVAPORATIVE EMISSION (EVAP)                                                DTC P1491 VACUUM CUT VALVE BYPASS
CANISTER VENT CONTROL VALVE (CLOSE).........514                                      VALVE..........................................................................553
  Component Description ...........................................514                  Description ...............................................................553
  CONSULT-II Reference Value in Data Monitor                                            CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................514      Mode ........................................................................553
  ECM Terminals and Reference Value .....................514                            ECM Terminals and Reference Value .....................553
  On Board Diagnosis Logic.......................................514                    On Board Diagnosis Logic.......................................554
  Possible Cause........................................................515             Possible Cause........................................................554
  DTC Confirmation Procedure ..................................515                      DTC Confirmation Procedure ..................................554
  Wiring Diagram ........................................................516            Overall Function Check ...........................................555
  Diagnostic Procedure ..............................................517                Wiring Diagram ........................................................556
DTC P1447 EVAPORATIVE EMISSION (EVAP)                                                   Diagnostic Procedure ..............................................557
CONTROL SYSTEM PURGE FLOW                                                            DTC P1605 A/T DIAGNOSIS COMMUNICATION
MONITORING ..............................................................522         LINE .............................................................................565
  System Description..................................................522               System Description..................................................565
  On Board Diagnosis Logic.......................................522                    ECM Terminals and Reference Value .....................565
  Possible Cause........................................................522             On Board Diagnosis Logic.......................................565
  DTC Confirmation Procedure ..................................523                      DTC Confirmation Procedure ..................................565




                                                                                EC-6
                                                                                                                                                                                 EXIT


                                                     CONTENTS                                  (Cont'd)
  Wiring Diagram ........................................................566           CONSULT-II Reference Value in Data Monitor                                          GI
  Diagnostic Procedure ..............................................567               Mode ........................................................................593
DTC P1706 PARK/NEUTRAL POSITION (PNP)                                                  ECM Terminals and Reference Value .....................593
SWITCH .......................................................................568      Wiring Diagram ........................................................594          MA
  Component Description ...........................................568                 Diagnostic Procedure ..............................................595
  CONSULT-II Reference Value in Data Monitor                                           Component Inspection.............................................597
  Mode ........................................................................568   REFRIGERANT PRESSURE SENSOR ......................598
                                                                                                                                                                           EM
  ECM Terminals and Reference Value .....................568                           Description ...............................................................598
  On Board Diagnosis Logic.......................................568                   ECM Terminals and Reference Value .....................598                          LC
  DTC Confirmation Procedure ..................................568                     Wiring Diagram ........................................................599
  Overall Function Check ...........................................569                Diagnostic Procedure ..............................................600
  Wiring Diagram ........................................................570         ELECTRICAL LOAD SIGNAL.....................................603
  Diagnostic Procedure For M/T Models....................571                           CONSULT-II Reference Value in Data Monitor
  Diagnostic Procedure For A/T Models ....................573                          Mode ........................................................................603
INJECTOR ...................................................................575        ECM Terminals and Reference Value .....................603                          FE
  Component Description ...........................................575                 Wiring Diagram ........................................................604
  CONSULT-II Reference Value in Data Monitor                                           Diagnostic Procedure ..............................................606              CL
  Mode ........................................................................575   MIL & DATA LINK CONNECTORS ............................610
  ECM Terminals and Reference Value .....................575                           Wiring Diagram ........................................................610
  Wiring Diagram ........................................................576         SERVICE DATA AND SPECIFICATIONS (SDS) .......611                                      MT
  Diagnostic Procedure ..............................................577               Fuel Pressure Regulator..........................................611
START SIGNAL...........................................................580             Idle Speed and Ignition Timing................................611
  CONSULT-II Reference Value in Data Monitor                                           Ignition Coil ..............................................................611     AT
  Mode ........................................................................580     Mass Air Flow Sensor..............................................611
  ECM Terminals and Reference Value .....................580                           Engine Coolant Temperature Sensor ......................611
                                                                                                                                                                           AX
  Wiring Diagram ........................................................581           EGR Temperature Sensor .......................................611
  Diagnostic Procedure ..............................................582               Fuel Pump ...............................................................611
FUEL PUMP.................................................................584          IACV-AAC Valve ......................................................611            SU
  System Description..................................................584              Injector .....................................................................612
  Component Description ...........................................584                 Resistor....................................................................612
  CONSULT-II Reference Value in Data Monitor                                           Throttle Position Sensor ..........................................612              BR
  Mode ........................................................................584     Front Heated Oxygen Sensor Heater......................612
  ECM Terminals and Reference Value .....................584                           Calculated Load Value.............................................612
  Wiring Diagram ........................................................586           Intake Air Temperature Sensor................................612
                                                                                                                                                                           ST
  Diagnostic Procedure ..............................................587               EVAP Canister Purge Volume Control Valve ..........612
  Component Inspection.............................................592                 Rear Heated Oxygen Sensor Heater ......................612                          RS
POWER STEERING OIL PRESSURE SWITCH.........593                                         Crankshaft Position Sensor (OBD)..........................612
  Component Description ...........................................593                 Fuel Tank Temperature Sensor ...............................612
                                                                                                                                                                           BT

                                                                                                                                                                           HA

                                                                                                                                                                           SC

                                                                                                                                                                           EL

                                                                                                                                                                           IDX




                                                                                EC-7
                                                                                                           EXIT
                                     TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC

                                             Alphabetical & P No. Index for DTC                NCEC0001
ALPHABETICAL INDEX FOR DTC                                                                   NCEC0001S01


                         Items
                                                            DTC*1           Reference page
                 (CONSULT-II screen terms)

 Unable to access ECM                                        --                EC-123

 ABSL PRES SEN/CIRC                                         P0105              EC-161

 AIR TEMP SEN/CIRC                                          P0110              EC-166

 A/T 1ST GR FNCTN                                           P0731                 AT-125

 A/T 2ND GR FNCTN                                           P0732                 AT-132

 A/T 3RD GR FNCTN                                           P0733                 AT-138

 A/T 4TH GR FNCTN                                           P0734                 AT-144

 A/T COMM LINE                                             P0600*2             EC-442

 A/T DIAG COMM LINE                                         P1605              EC-565

 A/T TCC S/V FNCTN                                          P0744                 AT-160

 ATF TEMP SEN/CIRC                                          P0710                 AT-110

 CAM POS SEN/CIRC                                           P0340              EC-327

 CLOSED LOOP-B1                                             P1148              EC-449

 CLOSED TP SW/CIRC                                          P0510              EC-434

 COOLANT T SEN/CIRC*3                                       P0115              EC-172

 *COOLAN T SEN/CIRC                                         P0125              EC-191

 CPS/CIRC (OBD) COG                                         P1336              EC-476

 CPS/CIRCUIT (OBD)                                          P0335              EC-321

 CYL 1 MISFIRE                                              P0301              EC-310

 CYL 2 MISFIRE                                              P0302              EC-310

 CYL 3 MISFIRE                                              P0303              EC-310

 CYL 4 MISFIRE                                              P0304              EC-310

 ECM                                                        P0605              EC-445

 EGR SYSTEM                                                 P0400              EC-335

 EGR SYSTEM                                                 P1402              EC-490

 EGR TEMP SEN/CIRC                                          P1401              EC-482

 EGR VOL CONT/V CIR                                         P0403              EC-345

 ENGINE SPEED SIG                                           P0725                 AT-121

 ENG OVER TEMP                                              P0217              EC-292

 ENG OVER TEMP                                             P1217*2             EC-451

 EVAP GROSS LEAK                                            P0455              EC-397

 EVAP PURG FLOW/MON                                         P1447              EC-522

 EVAP SYS PRES SEN                                          P0450              EC-384

 EVAP SMALL LEAK                                            P0440              EC-356

 EVAP SMALL LEAK                                            P1440              EC-500



                                                  EC-8
                                                                                                                    EXIT
                                TROUBLE DIAGNOSIS -- INDEX
                                                                Alphabetical & P No. Index for DTC (Cont'd)

                       Items
                                                        DTC*1                      Reference page
               (CONSULT-II screen terms)
                                                                                                              GI
FR O2 SE HEATER-B1                                      P0135                          EC-233

FRONT O2 SENSOR-B1                                      P0130                          EC-197
                                                                                                              MA
FRONT O2 SENSOR-B1                                      P0131                          EC-205

FRONT O2 SENSOR-B1                                      P0132                          EC-211
                                                                                                              EM
FRONT O2 SENSOR-B1                                      P0133                          EC-218

FRONT O2 SENSOR-B1                                      P0134                          EC-227                 LC
FUEL LEVL SEN/CIRC                                      P0464                          EC-416

FUEL LEVL SEN/CIRC                                      P1464                          EC-543

FUEL LEVEL SENSOR                                       P0461                          EC-414

FUEL LV SE (SLOSH)                                      P0460                          EC-409                 FE
FUEL SYS-LEAN/BK1                                       P0171                          EC-273

FUEL SYS-RICH/BK1                                       P0172                          EC-280                 CL
FUEL TEMP SEN/CIRC                                      P0180                          EC-287

IACV/AAC VLV/CIRC                                       P0505                          EC-425                 MT
IGN SIGNAL-PRIMARY                                      P1320                          EC-469

KNOCK SEN/CIRC-B1                                      P0325*2                         EC-317
                                                                                                              AT
L/PRES SOL/CIRC                                         P0745                          AT-171
                                                                                                              AX
MAF SEN/CIRCUIT*3                                       P0100                          EC-152

MULTI CYL MISFIRE                                       P0300 



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