Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti G20 P11 1999-2002 Approved G20-P11-2001 ec

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                                                                                       ENGINE CONTROL SYSTEM                                                                GI




                                                                                                   SECTION                       EC                                         MA

                                                                                                                                                                            EM

                                                                                                                                                                            LC




                                                                 CONTENTS                                                                                                   FE


TROUBLE DIAGNOSIS - INDEX ....................................8                        ON BOARD DIAGNOSTIC SYSTEM
                                                                                                                                                                            CL
  Alphabetical & P No. Index for DTC ...........................8                      DESCRIPTION ...............................................................67
PRECAUTIONS .............................................................14              Introduction ................................................................67    MT
  Supplemental Restraint System (SRS) AIR                                                Two Trip Detection Logic ...........................................67
  BAG and SEAT BELT PRE-TENSIONER.............14                                         Emission-related Diagnostic Information ...................68
  Precautions for On Board Diagnostic (OBD)                                              Malfunction Indicator Lamp (MIL)..............................81                   AT
  System of Engine and A/T.........................................14                    OBD System Operation Chart ...................................83
  Engine Fuel & Emission Control System ..................15                             CONSULT-II ...............................................................88
  Precautions ................................................................16         Generic Scan Tool (GST) ........................................101
                                                                                                                                                                            AX
  Wiring Diagrams and Trouble Diagnosis...................17                           TROUBLE DIAGNOSIS - INTRODUCTION................103
PREPARATION .............................................................18              Introduction ..............................................................103     SU
  Special Service Tools ................................................18               Work Flow................................................................105
  Commercial Service Tools .........................................18                 TROUBLE DIAGNOSIS - BASIC INSPECTION .........107
ENGINE AND EMISSION CONTROL OVERALL                                                      Basic Inspection.......................................................107         BR
SYSTEM.........................................................................20      TROUBLE DIAGNOSIS - GENERAL
  Engine Control Component Parts Location...............20                             DESCRIPTION .............................................................123
  Circuit Diagram ..........................................................24           DTC Inspection Priority Chart..................................123                 ST
  System Diagram ........................................................26              Fail-safe Chart .........................................................124
  Vacuum Hose Drawing ..............................................27                   Symptom Matrix Chart.............................................125
                                                                                                                                                                            RS
  System Chart .............................................................28           CONSULT-II Reference Value in Data Monitor
ENGINE AND EMISSION BASIC CONTROL                                                        Mode ........................................................................129
SYSTEM DESCRIPTION ...............................................29                     Major Sensor Reference Graph in Data Monitor                                       BT
  Multiport Fuel Injection (MFI) System .......................29                        Mode ........................................................................131
  Distributor Ignition (DI) System .................................31                   ECM Terminals and Reference Value .....................134
  Air Conditioning Cut Control......................................32                 TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..142                                        HA
  Fuel Cut Control (at no load & high engine                                             Description ...............................................................142
  speed) ........................................................................33      Testing Condition .....................................................142
  Evaporative Emission System ...................................33                      Inspection Procedure...............................................142
                                                                                                                                                                            SC
  On Board Refueling Vapor Recovery (ORVR) ..........39                                  Diagnostic Procedure ..............................................143
  Positive Crankcase Ventilation ..................................48                  TROUBLE DIAGNOSIS FOR INTERMITTENT                                                   EL
BASIC SERVICE PROCEDURE ...................................50                          INCIDENT.....................................................................146
  Fuel Pressure Release ..............................................50                 Description ...............................................................146
  Fuel Pressure Check .................................................50                Diagnostic Procedure ..............................................146             IDX
  Fuel Pressure Regulator Check ................................51                     TROUBLE DIAGNOSIS FOR POWER SUPPLY........147
  Injector .......................................................................51     Main Power Supply and Ground Circuit..................147
  Idle Speed/Ignition Timing/Idle Mixture Ratio                                        DTC P0100 MASS AIR FLOW SENSOR (MAFS)......154
  Adjustment .................................................................53         Component Description ...........................................154
  Idle Air Volume Learning ...........................................65                 CONSULT-II Reference Value in Data Monitor
                                                                                         Mode ........................................................................154
                                                     CONTENTS                                  (Cont'd)
  ECM Terminals and Reference Value .....................154                           Component Description ...........................................196
  On Board Diagnosis Logic.......................................155                   CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................155                     Mode ........................................................................196
  Overall Function Check ...........................................157                ECM Terminals and Reference Value .....................196
  Wiring Diagram ........................................................158           On Board Diagnosis Logic.......................................197
  Diagnostic Procedure ..............................................159               DTC Confirmation Procedure ..................................197
  Component Inspection.............................................162                 Overall Function Check ...........................................198
DTC P0105 ABSOLUTE PRESSURE SENSOR ........163                                         Wiring Diagram ........................................................199
  Component Description ...........................................163                 Diagnostic Procedure ..............................................200
  On Board Diagnosis Logic.......................................163                   Component Inspection.............................................202
  DTC Confirmation Procedure ..................................163                   DTC P0131 HEATED OXYGEN SENSOR 1
  Diagnostic Procedure ..............................................164             (FRONT) (LEAN SHIFT MONITORING) .....................204
DTC P0110 INTAKE AIR TEMPERATURE                                                       Component Description ...........................................204
SENSOR ......................................................................165       CONSULT-II Reference Value in Data Monitor
  Component Description ...........................................165                 Mode ........................................................................204
  On Board Diagnosis Logic.......................................165                   ECM Terminals and Reference Value .....................204
  DTC Confirmation Procedure ..................................165                     On Board Diagnosis Logic.......................................205
  Wiring Diagram ........................................................167           DTC Confirmation Procedure ..................................205
  Diagnostic Procedure ..............................................168               Overall Function Check ...........................................206
  Component Inspection.............................................170                 Diagnostic Procedure ..............................................206
DTC P0115 ENGINE COOLANT TEMPERATURE                                                   Component Inspection.............................................208
SENSOR (ECTS) (CIRCUIT) .......................................171                   DTC P0132 HEATED OXYGEN SENSOR 1
  Component Description ...........................................171               (FRONT) (RICH SHIFT MONITORING) ......................210
  CONSULT-II Reference Value in Data Monitor                                           Component Description ...........................................210
  Mode ........................................................................171     CONSULT-II Reference Value in Data Monitor
  On Board Diagnosis Logic.......................................171                   Mode ........................................................................210
  DTC Confirmation Procedure ..................................172                     ECM Terminals and Reference Value .....................210
  Wiring Diagram ........................................................173           On Board Diagnosis Logic.......................................211
  Diagnostic Procedure ..............................................174               DTC Confirmation Procedure ..................................211
  Component Inspection.............................................176                 Overall Function Check ...........................................212
DTC P0120 THROTTLE POSITION SENSOR ...........177                                      Diagnostic Procedure ..............................................213
  Component Description ...........................................177                 Component Inspection.............................................215
  CONSULT-II Reference Value in Data Monitor                                         DTC P0133 HEATED OXYGEN SENSOR 1
  Mode ........................................................................177   (FRONT) (RESPONSE MONITORING).......................217
  ECM Terminals and Reference Value .....................178                           Component Description ...........................................217
  On Board Diagnosis Logic.......................................178                   CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................179                     Mode ........................................................................217
  Wiring Diagram ........................................................183           ECM Terminals and Reference Value .....................217
  Diagnostic Procedure ..............................................184               On Board Diagnosis Logic.......................................218
  Component Inspection.............................................188                 DTC Confirmation Procedure ..................................218
DTC P0125 ENGINE COOLANT TEMPERATURE                                                   Overall Function Check ...........................................219
(ECT) SENSOR............................................................190            Wiring Diagram ........................................................220
  Component Description ...........................................190                 Diagnostic Procedure ..............................................221
  CONSULT-II Reference Value in Data Monitor                                           Component Inspection.............................................224
  Mode ........................................................................190   DTC P0134 HEATED OXYGEN SENSOR 1
  On Board Diagnosis Logic.......................................190                 (FRONT) (HIGH VOLTAGE)........................................226
  DTC Confirmation Procedure ..................................191                     Component Description ...........................................226
  Wiring Diagram ........................................................192           CONSULT-II Reference Value in Data Monitor
  Diagnostic Procedure ..............................................193               Mode ........................................................................226
  Component Inspection.............................................195                 ECM Terminals and Reference Value .....................226
DTC P0130 HEATED OXYGEN SENSOR 1                                                       On Board Diagnosis Logic.......................................227
(FRONT) (CIRCUIT).....................................................196              DTC Confirmation Procedure ..................................227




                                                                                EC-2
                                                     CONTENTS                                  (Cont'd)
  Wiring Diagram ........................................................228           Component Description ...........................................261               GI
  Diagnostic Procedure ..............................................229               CONSULT-II Reference Value in Data Monitor
  Component Inspection.............................................230                 Mode ........................................................................261
DTC P0135 HEATED OXYGEN SENSOR 1                                                       ECM Terminals and Reference Value .....................261                         MA
HEATER (FRONT).......................................................232               On Board Diagnosis Logic.......................................261
  Description ...............................................................232       DTC Confirmation Procedure ..................................262
  CONSULT-II Reference Value in Data Monitor                                           Overall Function Check ...........................................262
                                                                                                                                                                          EM
  Mode ........................................................................232     Wiring Diagram ........................................................263
  ECM Terminals and Reference Value .....................232                           Diagnostic Procedure ..............................................264             LC
  On Board Diagnosis Logic.......................................232                   Component Inspection.............................................265
  DTC Confirmation Procedure ..................................233                   DTC P0141 HEATED OXYGEN SENSOR 2
  Wiring Diagram ........................................................234         HEATER (REAR) .........................................................267
  Diagnostic Procedure ..............................................235               Description ...............................................................267
  Component Inspection.............................................236                 CONSULT-II Reference Value in Data Monitor
DTC P0137 HEATED OXYGEN SENSOR 2                                                       Mode ........................................................................267   FE
(REAR) (MIN. VOLTAGE MONITORING)...................237                                 ECM Terminals and Reference Value .....................267
  Component Description ...........................................237                 On Board Diagnosis Logic.......................................267                 CL
  CONSULT-II Reference Value in Data Monitor                                           DTC Confirmation Procedure ..................................268
  Mode ........................................................................237     Wiring Diagram ........................................................269
  ECM Terminals and Reference Value .....................237                           Diagnostic Procedure ..............................................270             MT
  On Board Diagnosis Logic.......................................237                   Component Inspection.............................................271
  DTC Confirmation Procedure ..................................238                   DTC P0171 FUEL INJECTION SYSTEM
  Overall Function Check ...........................................238              FUNCTION (LEAN SIDE) ............................................272                 AT
  Wiring Diagram ........................................................239           On Board Diagnosis Logic.......................................272
  Diagnostic Procedure ..............................................240               DTC Confirmation Procedure ..................................272
                                                                                                                                                                          AX
  Component Inspection.............................................243                 Wiring Diagram ........................................................274
DTC P0138 HEATED OXYGEN SENSOR 2                                                       Diagnostic Procedure ..............................................275
(REAR) (MAX. VOLTAGE MONITORING) .................245                                DTC P0172 FUEL INJECTION SYSTEM                                                      SU
  Component Description ...........................................245               FUNCTION (RICH SIDE) .............................................279
  CONSULT-II Reference Value in Data Monitor                                           On Board Diagnosis Logic.......................................279
  Mode ........................................................................245     DTC Confirmation Procedure ..................................279                   BR
  ECM Terminals and Reference Value .....................245                           Wiring Diagram ........................................................281
  On Board Diagnosis Logic.......................................245                   Diagnostic Procedure ..............................................282
  DTC Confirmation Procedure ..................................246                   DTC P0180 FUEL TANK TEMPERATURE
                                                                                                                                                                          ST
  Overall Function Check ...........................................246              SENSOR ......................................................................286
  Wiring Diagram ........................................................247           Component Description ...........................................286               RS
  Diagnostic Procedure ..............................................248               On Board Diagnosis Logic.......................................286
  Component Inspection.............................................251                 DTC Confirmation Procedure ..................................286
DTC P0139 HEATED OXYGEN SENSOR 2                                                       Wiring Diagram ........................................................288         BT
(REAR) (RESPONSE MONITORING).........................253                               Diagnostic Procedure ..............................................289
  Component Description ...........................................253                 Component Inspection.............................................290
  CONSULT-II Reference Value in Data Monitor                                         DTC P0217 COOLANT OVERTEMPERATURE                                                    HA
  Mode ........................................................................253   ENRICHMENT PROTECTION.....................................291
  ECM Terminals and Reference Value .....................253                           System Description..................................................291
                                                                                                                                                                          SC
  On Board Diagnosis Logic.......................................253                   CONSULT-II Reference Value in Data Monitor
  DTC Confirmation Procedure ..................................254                     Mode ........................................................................291
  Overall Function Check ...........................................254                ECM Terminals and Reference Value .....................292                         EL
  Wiring Diagram ........................................................255           On Board Diagnosis Logic.......................................292
  Diagnostic Procedure ..............................................256               Possible Cause........................................................292
  Component Inspection.............................................259                 Overall Function Check ...........................................293              IDX
DTC P0140 HEATED OXYGEN SENSOR 2                                                       Wiring Diagram ........................................................296
(REAR) (HIGH VOLTAGE) ..........................................261                    Diagnostic Procedure ..............................................297




                                                                                EC-3
                                                     CONTENTS                                   (Cont'd)
   Main 12 Causes of Overheating..............................308                       Wiring Diagram ........................................................347
DTC P0300 - P0304 NO. 4 - 1 CYLINDER                                                    Diagnostic Procedure ..............................................348
MISFIRE, MULTIPLE CYLINDER MISFIRE ...............309                                 DTC P0420 THREE WAY CATALYST FUNCTION ...351
   On Board Diagnosis Logic.......................................309                   On Board Diagnosis Logic.......................................351
   DTC Confirmation Procedure ..................................309                     DTC Confirmation Procedure ..................................351
   Diagnostic Procedure ..............................................310               Overall Function Check ...........................................352
   Component Inspection.............................................315                 Diagnostic Procedure ..............................................352
DTC P0325 KNOCK SENSOR (KS) ...........................316                            DTC P0440 EVAP CONTROL SYSTEM (SMALL
   Component Description ...........................................316               LEAK) (NEGATIVE PRESSURE)................................355
   ECM Terminals and Reference Value .....................316                           On Board Diagnosis Logic.......................................355
   On Board Diagnosis Logic.......................................316                   Possible Cause........................................................355
   DTC Confirmation Procedure ..................................316                     DTC Confirmation Procedure ..................................356
   Wiring Diagram ........................................................317           Diagnostic Procedure ..............................................357
   Diagnostic Procedure ..............................................318             DTC P0443 EVAP CANISTER PURGE VOLUME
   Component Inspection.............................................319               CONTROL SOLENOID VALVE (CIRCUIT).................369
DTC P0335 CRANKSHAFT POSITION SENSOR                                                    Description ...............................................................369
(CKPS) (OBD)..............................................................320           CONSULT-II Reference Value in Data Monitor
   Component Description ...........................................320                 Mode ........................................................................369
   ECM Terminals and Reference Value .....................320                           ECM Terminals and Reference Value .....................370
   On Board Diagnosis Logic.......................................320                   On Board Diagnosis Logic.......................................370
   DTC Confirmation Procedure ..................................321                     Possible Cause........................................................370
   Wiring Diagram ........................................................322           DTC Confirmation Procedure ..................................371
   Diagnostic Procedure ..............................................323               Wiring Diagram ........................................................372
   Component Inspection.............................................325                 Diagnostic Procedure ..............................................373
DTC P0340 CAMSHAFT POSITION SENSOR                                                    DTC P0446 EVAPORATIVE EMISSION (EVAP)
(CMPS).........................................................................326    CANISTER VENT CONTROL VALVE (CIRCUIT) ......376
   Component Description ...........................................326                 Component Description ...........................................376
   ECM Terminals and Reference Value .....................326                           CONSULT-II Reference Value in Data Monitor
   On Board Diagnosis Logic.......................................327                   Mode ........................................................................376
   DTC Confirmation Procedure ..................................327                     ECM Terminals and Reference Value .....................376
   Wiring Diagram ........................................................329           On Board Diagnosis Logic.......................................376
   Diagnostic Procedure ..............................................330               Possible Cause........................................................377
   Component Inspection.............................................333                 DTC Confirmation Procedure ..................................377
DTC P0400 EGR FUNCTION (CLOSE)......................334                                 Wiring Diagram ........................................................378
   Description ...............................................................334       Diagnostic Procedure ..............................................379
   CONSULT-II Reference Value in Data Monitor                                         DTC P0450 EVAPORATIVE EMISSION (EVAP)
   Mode ........................................................................335   CONTROL SYSTEM PRESSURE SENSOR ..............383
   ECM Terminals and Reference Value .....................335                           Component Description ...........................................383
   On Board Diagnosis Logic.......................................335                   CONSULT-II Reference Value in Data Monitor
   Possible Cause........................................................336            Mode ........................................................................383
   DTC Confirmation Procedure ..................................336                     ECM Terminals and Reference Value .....................383
   Wiring Diagram ........................................................338           On Board Diagnosis Logic.......................................384
   Diagnostic Procedure ..............................................339               Possible Cause........................................................384
DTC P0403 EGR VOLUME CONTROL VALVE                                                      DTC Confirmation Procedure ..................................384
(CIRCUIT).....................................................................344       Wiring Diagram ........................................................386
   Description ...............................................................344       Diagnostic Procedure ..............................................387
   CONSULT-II Reference Value in Data Monitor                                         DTC P0455 EVAP CONTROL SYSTEM (GROSS
   Mode ........................................................................345   LEAK)...........................................................................396
   ECM Terminals and Reference Value .....................345                           On Board Diagnosis Logic.......................................396
   On Board Diagnosis Logic.......................................345                   Possible Cause........................................................396
   Possible Cause........................................................346            DTC Confirmation Procedure ..................................397
   DTC Confirmation Procedure ..................................346                     Diagnostic Procedure ..............................................398




                                                                                 EC-4
                                                     CONTENTS                                  (Cont'd)
DTC P0460 FUEL LEVEL SENSOR FUNCTION                                                   System Description..................................................440            GI
(SLOSH).......................................................................407      ECM Terminals and Reference Value .....................440
  Component Description ...........................................407                 On Board Diagnosis Logic.......................................440
  ECM Terminals and Reference Value .....................407                           DTC Confirmation Procedure ..................................440                   MA
  On Board Diagnostic Logic......................................407                   Wiring Diagram ........................................................441
  Possible Cause........................................................407            Diagnostic Procedure ..............................................442
  DTC Confirmation Procedure ..................................408                   DTC P0605 ECM .........................................................443
                                                                                                                                                                          EM
  Wiring Diagram ........................................................409           Component Description ...........................................443
  Diagnostic Procedure ..............................................410               On Board Diagnosis Logic.......................................443                 LC
DTC P0461 FUEL LEVEL SENSOR FUNCTION .......412                                        DTC Confirmation Procedure ..................................443
  Component Description ...........................................412                 Diagnostic Procedure ..............................................444
  On Board Diagnostic Logic......................................412                 DTC P1126 THERMOSTAT FUNCTION.....................445
  Possible Cause........................................................412            On Board Diagnosis Logic.......................................445
  Overall Function Check ...........................................412                Possible Cause........................................................445
DTC P0464 FUEL LEVEL SENSOR CIRCUIT ...........414                                     DTC Confirmation Procedure ..................................445                   FE
  Component Description ...........................................414                 Diagnostic Procedure ..............................................446
  ECM Terminals and Reference Value .....................414                         DTC P1148 CLOSED LOOP CONTROL ....................447                                CL
  On Board Diagnostic Logic......................................414                   On Board Diagnosis Logic.......................................447
  Possible Cause........................................................414            DTC Confirmation Procedure ..................................447
  DTC Confirmation Procedure ..................................415                     Overall Function Check ...........................................448              MT
  Wiring Diagram ........................................................416           Diagnostic Procedure ..............................................448
  Diagnostic Procedure ..............................................417             DTC P1217 ENGINE OVER TEMPERATURE
DTC P0500 VEHICLE SPEED SENSOR (VSS) .........419                                    (OVERHEAT) ...............................................................449        AT
  Component Description ...........................................419                 System Description..................................................449
  ECM Terminals and Reference Value .....................419                           CONSULT-II Reference Value in Data Monitor
                                                                                                                                                                          AX
  On Board Diagnosis Logic.......................................419                   Mode ........................................................................449
  DTC Confirmation Procedure ..................................419                     ECM Terminals and Reference Value .....................450
  Overall Function Check ...........................................420                On Board Diagnosis Logic.......................................450                 SU
  Wiring Diagram ........................................................421           Overall Function Check ...........................................451
  Diagnostic Procedure ..............................................422               Wiring Diagram ........................................................452
DTC P0505 IDLE AIR CONTROL VALVE (IACV) -                                              Diagnostic Procedure ..............................................453             BR
AUXILIARY AIR CONTROL (AAC) VALVE ...............423                                   Main 12 Causes of Overheating..............................465
  Description ...............................................................423       Component Inspection.............................................465
  CONSULT-II Reference Value in Data Monitor                                         DTC P1336 CRANKSHAFT POSITION SENSOR
                                                                                                                                                                          ST
  Mode ........................................................................424   (CKPS) (OBD) (COG)..................................................467
  ECM Terminals and Reference Value .....................424                           Component Description ...........................................467               RS
  On Board Diagnosis Logic.......................................424                   ECM Terminals and Reference Value .....................467
  DTC Confirmation Procedure ..................................424                     On Board Diagnosis Logic.......................................467
  Wiring Diagram ........................................................426           DTC Confirmation Procedure ..................................468                   BT
  Diagnostic Procedure ..............................................427               Wiring Diagram ........................................................469
DTC P0510 CLOSED THROTTLE POSITION                                                     Diagnostic Procedure ..............................................470
SWITCH .......................................................................432      Component Inspection.............................................472               HA
  Component Description ...........................................432               DTC P1401 EGR TEMPERATURE SENSOR.............473
  CONSULT-II Reference Value in Data Monitor                                           Component Description ...........................................473
                                                                                                                                                                          SC
  Mode ........................................................................432     On Board Diagnosis Logic.......................................473
  ECM Terminals and Reference Value .....................432                           Possible Cause........................................................473
  On Board Diagnosis Logic.......................................432                   DTC Confirmation Procedure ..................................474                   EL
  DTC Confirmation Procedure ..................................433                     Wiring Diagram ........................................................476
  Overall Function Check ...........................................433                Diagnostic Procedure ..............................................477
  Wiring Diagram ........................................................434         DTC P1402 EGR FUNCTION (OPEN) ........................481                            IDX
  Diagnostic Procedure ..............................................435               Description ...............................................................481
DTC P0600 A/T CONTROL.........................................440




                                                                                EC-5
                                                     CONTENTS                                   (Cont'd)
  CONSULT-II Reference Value in Data Monitor                                            Possible Cause........................................................526
  Mode ........................................................................482      DTC Confirmation Procedure ..................................526
  ECM Terminals and Reference Value .....................482                            Overall Function Check ...........................................527
  On Board Diagnosis Logic.......................................482                    Wiring Diagram ........................................................528
  Possible Cause........................................................483             Diagnostic Procedure ..............................................529
  DTC Confirmation Procedure ..................................483                   DTC P1464 FUEL LEVEL SENSOR CIRCUIT
  Wiring Diagram ........................................................485         (GROUND SIGNAL) ....................................................534
  Diagnostic Procedure ..............................................486                Component Description ...........................................534
DTC P1440 EVAP CONTROL SYSTEM (SMALL                                                    ECM Terminals and Reference Value .....................534
LEAK) (POSITIVE PRESSURE) .................................491                          On Board Diagnostic Logic......................................534
  On Board Diagnosis Logic.......................................491                    Possible Cause........................................................534
  Possible Cause........................................................491             DTC Confirmation Procedure ..................................535
  DTC Confirmation Procedure ..................................492                      Wiring Diagram ........................................................536
  Diagnostic Procedure ..............................................492                Diagnostic Procedure ..............................................537
DTC P1444 EVAP CANISTER PURGE VOLUME                                                 DTC P1490 VACUUM CUT VALVE BYPASS
CONTROL SOLENOID VALVE...................................493                         VALVE (CIRCUIT)........................................................538
  Description ...............................................................493        Description ...............................................................538
  CONSULT-II Reference Value in Data Monitor                                            CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................493      Mode ........................................................................538
  ECM Terminals and Reference Value .....................494                            ECM Terminals and Reference Value .....................538
  On Board Diagnosis Logic.......................................494                    On Board Diagnosis Logic.......................................539
  Possible Cause........................................................494             Possible Cause........................................................539
  DTC Confirmation Procedure ..................................495                      DTC Confirmation Procedure ..................................539
  Wiring Diagram ........................................................496            Wiring Diagram ........................................................540
  Diagnostic Procedure ..............................................497                Diagnostic Procedure ..............................................541
DTC P1446 EVAPORATIVE EMISSION (EVAP)                                                DTC P1491 VACUUM CUT VALVE BYPASS
CANISTER VENT CONTROL VALVE (CLOSE).........505                                      VALVE..........................................................................544
  Component Description ...........................................505                  Description ...............................................................544
  CONSULT-II Reference Value in Data Monitor                                            CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................505      Mode ........................................................................544
  ECM Terminals and Reference Value .....................505                            ECM Terminals and Reference Value .....................544
  On Board Diagnosis Logic.......................................505                    On Board Diagnosis Logic.......................................545
  Possible Cause........................................................506             Possible Cause........................................................545
  DTC Confirmation Procedure ..................................506                      DTC Confirmation Procedure ..................................545
  Wiring Diagram ........................................................507            Overall Function Check ...........................................546
  Diagnostic Procedure ..............................................508                Wiring Diagram ........................................................547
DTC P1447 EVAPORATIVE EMISSION (EVAP)                                                   Diagnostic Procedure ..............................................548
CONTROL SYSTEM PURGE FLOW                                                            DTC P1605 A/T DIAGNOSIS COMMUNICATION
MONITORING ..............................................................513         LINE .............................................................................556
  System Description..................................................513               System Description..................................................556
  On Board Diagnosis Logic.......................................513                    ECM Terminals and Reference Value .....................556
  Possible Cause........................................................513             On Board Diagnosis Logic.......................................556
  DTC Confirmation Procedure ..................................514                      DTC Confirmation Procedure ..................................556
  Overall Function Check ...........................................514                 Wiring Diagram ........................................................557
  Diagnostic Procedure ..............................................516                Diagnostic Procedure ..............................................558
DTC P1448 EVAPORATIVE EMISSION (EVAP)                                                DTC P1706 PARK/NEUTRAL POSITION (PNP)
CANISTER VENT CONTROL VALVE (OPEN)...........525                                     SWITCH .......................................................................559
  Component Description ...........................................525                  Component Description ...........................................559
  CONSULT-II Reference Value in Data Monitor                                            CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................525      Mode ........................................................................559
  ECM Terminals and Reference Value .....................525                            ECM Terminals and Reference Value .....................559
  On Board Diagnosis Logic.......................................525                    On Board Diagnosis Logic.......................................559




                                                                                EC-6
                                                     CONTENTS                                  (Cont'd)
  DTC Confirmation Procedure ..................................559                     ECM Terminals and Reference Value .....................592                          GI
  Overall Function Check ...........................................560                Wiring Diagram ........................................................593
  Wiring Diagram ........................................................561           Diagnostic Procedure ..............................................594
  Diagnostic Procedure For M/T Models....................562                           Component Inspection.............................................596                MA
  Diagnostic Procedure For A/T Models ....................564                        REFRIGERANT PRESSURE SENSOR ......................597
IGNITION SIGNAL.......................................................566              Description ...............................................................597
  Component Description ...........................................566                 ECM Terminals and Reference Value .....................597
                                                                                                                                                                           EM
  CONSULT-II Reference Value in Data Monitor                                           Wiring Diagram ........................................................598
  Mode ........................................................................566     Diagnostic Procedure ..............................................599              LC
  ECM Terminals and Reference Value .....................566                         ELECTRICAL LOAD SIGNAL.....................................602
  Wiring Diagram ........................................................568           CONSULT-II Reference Value in Data Monitor
  Diagnostic Procedure ..............................................569               Mode ........................................................................602
  Component Inspection.............................................573                 ECM Terminals and Reference Value .....................602
INJECTOR ...................................................................574        Wiring Diagram ........................................................603
  Component Description ...........................................574                 Diagnostic Procedure ..............................................605              FE
  CONSULT-II Reference Value in Data Monitor                                         MIL & DATA LINK CONNECTORS ............................609
  Mode ........................................................................574     Wiring Diagram ........................................................609          CL
  ECM Terminals and Reference Value .....................574                         SERVICE DATA AND SPECIFICATIONS (SDS) .......610
  Wiring Diagram ........................................................575           Fuel Pressure Regulator..........................................610
  Diagnostic Procedure ..............................................576               Idle Speed and Ignition Timing................................610                   MT
START SIGNAL...........................................................579             Ignition Coil ..............................................................610
  CONSULT-II Reference Value in Data Monitor                                           Mass Air Flow Sensor..............................................610
  Mode ........................................................................579     Engine Coolant Temperature Sensor ......................610                         AT
  ECM Terminals and Reference Value .....................579                           EGR Volume Control Valve .....................................610
  Wiring Diagram ........................................................580           EGR Temperature Sensor .......................................610
                                                                                                                                                                           AX
  Diagnostic Procedure ..............................................581               Fuel Pump ...............................................................611
FUEL PUMP.................................................................583          IACV-AAC Valve ......................................................611
  System Description..................................................583              Injector .....................................................................611   SU
  Component Description ...........................................583                 Resistor....................................................................611
  CONSULT-II Reference Value in Data Monitor                                           Throttle Position Sensor ..........................................611
  Mode ........................................................................583     Heated Oxygen Sensor 1 Heater (Front) ................611                           BR
  ECM Terminals and Reference Value .....................584                           Calculated Load Value.............................................611
  Wiring Diagram ........................................................585           Intake Air Temperature Sensor................................611
  Diagnostic Procedure ..............................................586               EVAP Canister Purge Volume Control Valve ..........611
                                                                                                                                                                           ST
  Component Inspection.............................................591                 Heated Oxygen Sensor 2 Heater (Rear).................611
POWER STEERING OIL PRESSURE SWITCH.........592                                         Crankshaft Position Sensor (OBD)..........................611                       RS
  Component Description ...........................................592                 Fuel Tank Temperature Sensor ...............................612
  CONSULT-II Reference Value in Data Monitor
  Mode ........................................................................592                                                                                         BT

                                                                                                                                                                           HA

                                                                                                                                                                           SC

                                                                                                                                                                           EL

                                                                                                                                                                           IDX




                                                                                EC-7
                                     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-124

 ABSL PRES SEN/CIRC                                         P0105              EC-163

 AIR TEMP SEN/CIRC                                          P0110              EC-165

 A/T 1ST GR FNCTN                                           P0731                 AT-128

 A/T 2ND GR FNCTN                                           P0732                 AT-135

 A/T 3RD GR FNCTN                                           P0733                 AT-141

 A/T 4TH GR FNCTN                                           P0734                 AT-147

 A/T COMM LINE                                             P0600*2             EC-440

 A/T DIAG COMM LINE                                         P1605              EC-556

 A/T TCC S/V FNCTN                                          P0744                 AT-163

 ATF TEMP SEN/CIRC                                          P0710                 AT-113

 CKP SEN/CIRCUIT                                            P0335              EC-320

 CKP SENSOR (COG)                                           P1336              EC-467

 CLOSED LOOP-B1                                             P1148              EC-447

 CLOSED TP SW/CIRC                                          P0510              EC-432

 CMP SEN/CIRC                                               P0340              EC-326

 COOLANT T SEN/CIRC*3                                       P0115              EC-171

 *COOLAN T SEN/CIRC                                         P0125              EC-190

 CYL 1 MISFIRE                                              P0301              EC-309

 CYL 2 MISFIRE                                              P0302              EC-309

 CYL 3 MISFIRE                                              P0303              EC-309

 CYL 4 MISFIRE                                              P0304              EC-309

 ECM                                                        P0605              EC-443

 EGR SYSTEM                                                 P0400              EC-334

 EGR SYSTEM                                                 P1402              EC-481

 EGR TEMP SEN/CIRC                                          P1401              EC-473

 EGR VOL CONT/V CIR                                         P0403              EC-344

 ENGINE SPEED SIG                                           P0725                 AT-124

 ENG OVER TEMP                                              P0217              EC-291

 ENG OVER TEMP                                             P1217*2             EC-449

 EVAP GROSS LEAK                                            P0455              EC-396

 EVAP PURG FLOW/MON                                         P1447              EC-513

 EVAP SYS PRES SEN                                          P0450              EC-383

 EVAP SMALL LEAK                                            P0440              EC-355

 EVAP SMALL LEAK                                            P1440              EC-491



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

                         Items
                                                        DTC*1                      Reference page
                 (CONSULT-II screen terms)
                                                                                                              GI
FUEL LEVL SEN/CIRC                                      P0464                          EC-414

FUEL LEVL SEN/CIRC                                      P1464                          EC-534
                                                                                                              MA
FUEL LEVEL SENSOR                                       P0461                          EC-412

FUEL LEV SEN SLOSH                                      P0460                          EC-407
                                                                                                              EM
FUEL SYS-LEAN/BK1                                       P0171                          EC-272

FUEL SYS-RICH/BK1                                       P0172                          EC-279                 LC
FUEL TEMP SEN/CIRC                                      P0180                          EC-286

HO2S1 (B1)                                              P0130                          EC-196

HO2S1 (B1)                                              P0131                          EC-204

HO2S1 (B1)                                              P0132                          EC-210                 FE
HO2S1 (B1)                                              P0133                          EC-217

HO2S1 (B1)                                              P0134                          EC-226                 CL
HO2S1 HTR (B1)                                          P0135                          EC-232

HO2S2 (B1)                                              P0137                          EC-237                 MT
HO2S2 (B1)                                              P0138                          EC-245

HO2S2 (B1)                                              P0139                          EC-253
                                                                                                              AT
HO2S2 (B1)                                              P0140                          EC-261
                                                                                                              AX
HO2S2 HTR (B1)                                          P0141                          EC-267

IACV/AAC VLV/CIRC                                       P0505                          EC-423
                                                                                                              SU
KNOCK SEN/CIRC-B1                                      P0325*2                         EC-316

L/PRES SOL/CIRC                                         P0745                          AT-174
                                                                                                              BR
MAF SEN/CIRCUIT*3                                       P0100                          EC-154

MULTI CYL MISFIRE                                       P0300                          EC-309
                                                                                                              ST
NATS MALFUNCTION                                    P1610 - P1615*2                    EL-249

NO DTC IS DETECTED. FURTHER TESTING MAY BE                                                                    RS
                                                        P0000                            --
REQUIRED.

O/R CLTCH SOL/CIRC                                      P1760                          AT-202
                                                                                                              BT
P-N POS SW/CIRCUIT                                      P1706                          EC-559

PNP SW/CIRC                                             P0705                          AT-107
                                                                                              



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