Nissan Sentra Emission Control System EC 2000 Owner's Manual

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ENGINE CONTROL SYSTEM

CONTENTS

QG18DE (EXC CALIF CA)

TROUBLE DIAGNOSIS - INDEX ..................................22

Alphabetical & P No. Index for DTC .........................22

PRECAUTIONS .............................................................28

Supplemental Restraint System (SRS) ″AIR

BAG″ and ″SEAT BELT PRE-TENSIONER″.............28

Precautions for On Board Diagnostic (OBD)

System of Engine and A/T.........................................28

Precautions................................................................29

Wiring Diagrams and Trouble Diagnosis...................31

PREPARATION .............................................................32

Special Service Tools................................................32

Commercial Service Tools.........................................32

ENGINE AND EMISSION CONTROL OVERALL

SYSTEM.........................................................................34

Engine Control Component Parts Location...............34

Circuit Diagram..........................................................39

System Diagram ........................................................41

Vacuum Hose Drawing..............................................43

System Chart.............................................................44

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION...............................................45

Multiport Fuel Injection (MFI) System .......................45

Distributor Ignition (DI) System .................................47

Air Conditioning Cut Control......................................48

Fuel Cut Control (at no load & high engine

speed)........................................................................49

Evaporative Emission System...................................49

Positive Crankcase Ventilation..................................65

BASIC SERVICE PROCEDURE...................................67

Fuel Pressure Release..............................................67

Fuel Pressure Check.................................................67

Fuel Pressure Regulator Check ................................68

Injector.......................................................................68

How to Check Idle Speed and Ignition Timing..........69

Idle Speed/Ignition Timing/Idle Mixture Ratio

Adjustment.................................................................71

Idle Air Volume Learning ...........................................83

SECTION

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION...............................................................85

Introduction................................................................85

Two Trip Detection Logic...........................................85

Emission-related Diagnostic Information...................86

Malfunction Indicator Lamp (MIL)............................100

OBD System Operation Chart.................................102

CONSULT-II.............................................................107

Generic Scan Tool (GST)........................................125

TROUBLE DIAGNOSIS - INTRODUCTION................127

Introduction..............................................................127

Work Flow................................................................129

TROUBLE DIAGNOSIS - BASIC INSPECTION.........131

Basic Inspection.......................................................131

TROUBLE DIAGNOSIS - GENERAL

DESCRIPTION.............................................................145

DTC Inspection Priority Chart..................................145

Fail-safe Chart .........................................................146

Symptom Matrix Chart.............................................147

CONSULT-II Reference Value in Data Monitor

Mode........................................................................151

Major Sensor Reference Graph in Data Monitor

Mode........................................................................154

PCM Terminals and Reference Value.....................156

TROUBLE DIAGNOSES..............................................165

Description...............................................................165

Diagnostic Procedure ..............................................166

TROUBLE DIAGNOSIS FOR INTERMITTENT

INCIDENT.....................................................................169

Description...............................................................169

Diagnostic Procedure ..............................................169

TROUBLE DIAGNOSIS FOR POWER SUPPLY........170

Main Power Supply and Ground Circuit..................170

DTC P0100 MASS AIR FLOW SENSOR (MAFS)......176

Component Description ...........................................176

CONSULT-II Reference Value in Data Monitor

Mode........................................................................176

On Board Diagnosis Logic.......................................176

DTC Confirmation Procedure..................................177

IDX

CONTENTS (Cont’d)

Overall Function Check...........................................179

Wiring Diagram........................................................180

Diagnostic Procedure ..............................................181

Component Inspection.............................................184

DTC P0105 ABSOLUTE PRESSURE SENSOR........185

Component Description ...........................................185

On Board Diagnosis Logic.......................................185

DTC Confirmation Procedure..................................185

Wiring Diagram........................................................186

Diagnostic Procedure ..............................................187

DTC P0110 INTAKE AIR TEMPERATURE

SENSOR ......................................................................190

Component Description ...........................................190

On Board Diagnosis Logic.......................................190

DTC Confirmation Procedure..................................190

Wiring Diagram........................................................192

Diagnostic Procedure ..............................................193

Component Inspection.............................................195

DTC P0115 ENGINE COOLANT TEMPERATURE

SENSOR (ECTS) (CIRCUIT).......................................196

Component Description ...........................................196

CONSULT-II Reference Value in Data Monitor

Mode........................................................................196

On Board Diagnosis Logic.......................................196

DTC Confirmation Procedure..................................197

Wiring Diagram........................................................198

Diagnostic Procedure ..............................................199

Component Inspection.............................................200

DTC P0120 THROTTLE POSITION SENSOR ...........201

Component Description ...........................................201

CONSULT-II Reference Value in Data Monitor

Mode........................................................................201

On Board Diagnosis Logic.......................................202

DTC Confirmation Procedure..................................202

Wiring Diagram........................................................206

Diagnostic Procedure ..............................................207

Component Inspection.............................................211

DTC P0125 ENGINE COOLANT TEMPERATURE

(ECT) SENSOR............................................................213

Component Description ...........................................213

CONSULT-II Reference Value in Data Monitor

Mode........................................................................213

On Board Diagnosis Logic.......................................213

DTC Confirmation Procedure..................................214

Wiring Diagram........................................................215

Diagnostic Procedure ..............................................216

Component Inspection.............................................217

DTC P0130, P0150 HEATED OXYGEN SENSOR 1

(FRONT) (BANK 1)/(BANK 2) (CIRCUIT) ..................218

Component Description ...........................................218

CONSULT-II Reference Value in Data Monitor

Mode........................................................................218

On Board Diagnosis Logic.......................................218

DTC Confirmation Procedure..................................219

Overall Function Check...........................................219

Wiring Diagram........................................................221

Diagnostic Procedure ..............................................223

Component Inspection.............................................225

DTC P0131, P0151 HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1)/(BANK 2) (LEAN SHIFT

MONITORING).............................................................227

Component Description ...........................................227

CONSULT-II Reference Value in Data Monitor

Mode........................................................................227

On Board Diagnosis Logic.......................................227

DTC Confirmation Procedure..................................228

Overall Function Check...........................................228

Diagnostic Procedure ..............................................229

Component Inspection.............................................231

DTC P0132, P0152 HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1)/(BANK 2) (RICH SHIFT

MONITORING).............................................................233

Component Description ...........................................233

CONSULT-II Reference Value in Data Monitor

Mode........................................................................233

On Board Diagnosis Logic.......................................233

DTC Confirmation Procedure..................................234

Overall Function Check...........................................234

Diagnostic Procedure ..............................................236

Component Inspection.............................................238

DTC P0133, P0153 HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1)/(BANK 2) (RESPONSE

MONITORING).............................................................240

Component Description ...........................................240

CONSULT-II Reference Value in Data Monitor

Mode........................................................................240

On Board Diagnosis Logic.......................................240

DTC Confirmation Procedure..................................241

Overall Function Check...........................................241

Wiring Diagram........................................................243

Diagnostic Procedure ..............................................245

Component Inspection.............................................249

DTC P0134, P0154 HEATED OXYGEN SENSOR 1

(FRONT) (BANK 1)/(BANK 2) (HIGH VOLTAGE)......251

Component Description ...........................................251

CONSULT-II Reference Value in Data Monitor

Mode........................................................................251

On Board Diagnosis Logic.......................................251

DTC Confirmation Procedure..................................252

Wiring Diagram........................................................253

Diagnostic Procedure ..............................................255

Component Inspection.............................................257

DTC P0135, P0155 HEATED OXYGEN SENSOR 1

HEATER (FRONT) (BANK 1)/(BANK 2).....................259

EC-2

CONTENTS (Cont’d)

Description...............................................................259

CONSULT-II Reference Value in Data Monitor

Mode........................................................................259

On Board Diagnosis Logic.......................................259

DTC Confirmation Procedure..................................259

Wiring Diagram........................................................261

Diagnostic Procedure ..............................................263

Component Inspection.............................................264

DTC P0137, P0157 HEATED OXYGEN SENSOR 2 (REAR) (BANK 1)/(BANK 2) (MIN. VOLTAGE

MONITORING).............................................................265

Component Description ...........................................265

CONSULT-II Reference Value in Data Monitor

Mode........................................................................265

On Board Diagnosis Logic.......................................265

DTC Confirmation Procedure..................................266

Overall Function Check...........................................266

Wiring Diagram........................................................267

Diagnostic Procedure ..............................................269

Component Inspection.............................................272

DTC P0138, P0158 HEATED OXYGEN SENSOR 2 (REAR) (BANK 1)/(BANK 2) (MAX. VOLTAGE

MONITORING).............................................................274

Component Description ...........................................274

CONSULT-II Reference Value in Data Monitor

Mode........................................................................274

On Board Diagnosis Logic.......................................274

DTC Confirmation Procedure..................................275

Overall Function Check...........................................275

Wiring Diagram........................................................276

Diagnostic Procedure ..............................................278

Component Inspection.............................................281

DTC P0139, P0159 HEATED OXYGEN SENSOR 2 (REAR) (BANK 1)/(BANK 2) (RESPONSE

MONITORING).............................................................283

Component Description ...........................................283

CONSULT-II Reference Value in Data Monitor

Mode........................................................................283

On Board Diagnosis Logic.......................................283

DTC Confirmation Procedure..................................284

Overall Function Check...........................................284

Wiring Diagram........................................................285

Diagnostic Procedure ..............................................287

Component Inspection.............................................290

DTC P0140, P0160 HEATED OXYGEN SENSOR 2

(REAR) (BANK 1)/(BANK 2) (HIGH VOLTAGE)........292

Component Description ...........................................292

CONSULT-II Reference Value in Data Monitor

Mode........................................................................292

On Board Diagnosis Logic.......................................292

DTC Confirmation Procedure..................................292

Overall Function Check...........................................293

Wiring Diagram........................................................294

Diagnostic Procedure ..............................................296

Component Inspection.............................................298

DTC P0141, P0161 HEATED OXYGEN SENSOR 2

HEATER (REAR) (BANK 1)/(BANK 2).......................300

Description...............................................................300

CONSULT-II Reference Value in Data Monitor

Mode........................................................................300

On Board Diagnosis Logic.......................................300

DTC Confirmation Procedure..................................300

Wiring Diagram........................................................302

Diagnostic Procedure ..............................................304

Component Inspection.............................................305

DTC P0171, P0174 FUEL INJECTION SYSTEM

FUNCTION (BANK 1)/(BANK 2) (LEAN SIDE)..........306

On Board Diagnosis Logic.......................................306

DTC Confirmation Procedure..................................306

Wiring Diagram........................................................308

Diagnostic Procedure ..............................................310

DTC P0172, P0175 FUEL INJECTION SYSTEM

FUNCTION (BANK 1)/(BANK 2) (RICH SIDE)...........315

On Board Diagnosis Logic.......................................315

DTC Confirmation Procedure..................................315

Wiring Diagram........................................................317

Diagnostic Procedure ..............................................319

DTC P0180 FUEL TANK TEMPERATURE

SENSOR ......................................................................324

Component Description ...........................................324

On Board Diagnosis Logic.......................................324

DTC Confirmation Procedure..................................324

Wiring Diagram........................................................326

Diagnostic Procedure ..............................................327

Component Inspection.............................................328

DTC P0217 COOLANT OVERTEMPERATURE

ENRICHMENT PROTECTION.....................................329

System Description..................................................329

CONSULT-II Reference Value in Data Monitor

Mode........................................................................329

On Board Diagnosis Logic.......................................330

Possible Cause........................................................330

Overall Function Check...........................................331

Wiring Diagram........................................................334

Diagnostic Procedure ..............................................335

Main 12 Causes of Overheating..............................346

DTC P0300 - P0304 NO.4-1CYLINDER

MISFIRE, MULTIPLE CYLINDER MISFIRE ...............347

On Board Diagnosis Logic.......................................347

DTC Confirmation Procedure..................................347

Diagnostic Procedure ..............................................348

DTC P0325 KNOCK SENSOR (KS)...........................354

Component Description ...........................................354

DTC Confirmation Procedure..................................354

IDX

EC-3

CONTENTS (Cont’d)

Wiring Diagram........................................................355

Diagnostic Procedure ..............................................356

Component Inspection.............................................357

DTC P0335 CRANKSHAFT POSITION SENSOR

(CKPS) (POS)..............................................................358

Component Description ...........................................358

On Board Diagnosis Logic.......................................358

DTC Confirmation Procedure..................................358

Wiring Diagram........................................................359

Diagnostic Procedure ..............................................360

Component Inspection.............................................362

DTC P0340 CAMSHAFT POSITION SENSOR

(CMPS) (PHASE).........................................................363

Component Description ...........................................363

On Board Diagnosis Logic.......................................363

DTC Confirmation Procedure..................................363

Wiring Diagram........................................................364

Diagnostic Procedure ..............................................365

Component Inspection.............................................368

DTC P0400 EGR FUNCTION (CLOSE)......................369

Description...............................................................369

CONSULT-II Reference Value in Data Monitor

Mode........................................................................370

On Board Diagnosis Logic.......................................370

Possible Cause........................................................370

DTC Confirmation Procedure..................................371

Wiring Diagram........................................................373

Diagnostic Procedure ..............................................374

DTC P0403 EGR VOLUME CONTROL VALVE

(CIRCUIT).....................................................................378

Description...............................................................378

CONSULT-II Reference Value in Data Monitor

Mode........................................................................379

On Board Diagnosis Logic.......................................379

Possible Cause........................................................379

DTC Confirmation Procedure..................................379

Wiring Diagram........................................................381

Diagnostic Procedure ..............................................382

DTC P0420, P0430 THREE WAY CATALYST

FUNCTION...................................................................385

On Board Diagnosis Logic.......................................385

DTC Confirmation Procedure..................................385

Overall Function Check...........................................386

Diagnostic Procedure ..............................................386

DTC P0440 EVAP CONTROL SYSTEM (SMALL

LEAK) (NEGATIVE PRESSURE)................................389

On Board Diagnosis Logic.......................................389

Possible Cause........................................................389

DTC Confirmation Procedure..................................390

Diagnostic Procedure ..............................................391

DTC P0443 EVAP CANISTER PURGE VOLUME

CONTROL SOLENOID VALVE (CIRCUIT).................403

Description...............................................................403

CONSULT-II Reference Value in Data Monitor

Mode........................................................................403

On Board Diagnosis Logic.......................................403

Possible Cause........................................................403

DTC Confirmation Procedure..................................403

Wiring Diagram........................................................405

Diagnostic Procedure ..............................................406

DTC P0446 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (CIRCUIT) ......409

Component Description ...........................................409

CONSULT-II Reference Value in Data Monitor

Mode........................................................................409

On Board Diagnosis Logic.......................................409

Possible Cause........................................................409

DTC Confirmation Procedure..................................410

Wiring Diagram........................................................411

Diagnostic Procedure ..............................................412

DTC P0450 EVAPORATIVE EMISSION (EVAP)

CONTROL SYSTEM PRESSURE SENSOR ..............416

Component Description ...........................................416

CONSULT-II Reference Value in Data Monitor

Mode........................................................................416

On Board Diagnosis Logic.......................................416

Possible Cause........................................................416

DTC Confirmation Procedure..................................417

Wiring Diagram........................................................418

Diagnostic Procedure ..............................................419

DTC P0455 EVAP CONTROL SYSTEM (GROSS

LEAK)...........................................................................428

On Board Diagnosis Logic.......................................428

Possible Cause........................................................428

DTC Confirmation Procedure..................................430

Diagnostic Procedure ..............................................431

DTC P0460 FUEL LEVEL SENSOR FUNCTION

(SLOSH).......................................................................441

Component Description ...........................................441

On Board Diagnostic Logic......................................441

Possible Cause........................................................441

DTC Confirmation Procedure..................................441

Wiring Diagram........................................................442

Diagnostic Procedure ..............................................443

DTC P0461 FUEL LEVEL SENSOR FUNCTION.......445

Component Description ...........................................445

On Board Diagnostic Logic......................................445

Possible Cause........................................................445

Overall Function Check...........................................445

DTC P0464 FUEL LEVEL SENSOR CIRCUIT...........447

Component Description ...........................................447

On Board Diagnostic Logic......................................447

Possible Cause........................................................447

DTC Confirmation Procedure..................................447

EC-4

CONTENTS (Cont’d)

Wiring Diagram........................................................448

Diagnostic Procedure ..............................................449

DTC P0500 VEHICLE SPEED SENSOR (VSS) .........451

Component Description ...........................................451

On Board Diagnosis Logic.......................................451

DTC Confirmation Procedure..................................451

Overall Function Check...........................................452

Wiring Diagram........................................................453

Diagnostic Procedure ..............................................454

DTC P0505 IDLE AIR CONTROL VALVE (IACV) -

AUXILIARY AIR CONTROL (AAC) VALVE ...............455

Description...............................................................455

CONSULT-II Reference Value in Data Monitor

Mode........................................................................456

On Board Diagnosis Logic.......................................456

DTC Confirmation Procedure..................................456

Wiring Diagram........................................................458

Diagnostic Procedure ..............................................459

DTC P0510 CLOSED THROTTLE POSITION

SWITCH .......................................................................464

Component Description ...........................................464

CONSULT-II Reference Value in Data Monitor

Mode........................................................................464

On Board Diagnosis Logic.......................................464

DTC Confirmation Procedure..................................464

Overall Function Check...........................................465

Wiring Diagram........................................................466

Diagnostic Procedure ..............................................467

DTC P0600 A/T CONTROL.........................................472

System Description..................................................472

On Board Diagnosis Logic.......................................472

DTC Confirmation Procedure..................................472

Diagnostic Procedure ..............................................472

DTC P0605 ECM .........................................................474

Component Description ...........................................474

On Board Diagnosis Logic.......................................474

DTC Confirmation Procedure..................................474

Diagnostic Procedure ..............................................475

DTC P1110 INTAKE VALVE TIMING CONTROL.......476

Description...............................................................476

CONSULT-II Reference Value in Data Monitor

Mode........................................................................477

On Board Diagnosis Logic.......................................477

DTC Confirmation Procedure..................................477

Wiring Diagram........................................................479

Diagnostic Procedure ..............................................480

Component Inspection.............................................481

DTC P1111 INTAKE VALVE TIMING CONTROL

SOLENOID VALVE......................................................482

Component Description ...........................................482

Operation.................................................................482

CONSULT-II Reference Value in Data Monitor

Mode........................................................................482

On Board Diagnosis Logic.......................................482

DTC Confirmation Procedure..................................482

Wiring Diagram........................................................484

Diagnostic Procedure ..............................................485

Component Inspection.............................................486

DTC P1126 THERMOSTAT FUNCTION.....................487

On Board Diagnosis Logic.......................................487

Possible Cause........................................................487

DTC Confirmation Procedure..................................487

Diagnostic Procedure ..............................................488

DTC P1130 SWIRL CONTROL VALVE CONTROL

SOLENOID VALVE......................................................489

Description...............................................................489

CONSULT-II Reference Value in Data Monitor

Mode........................................................................490

On Board Diagnosis Logic.......................................490

Possible Cause........................................................490

DTC Confirmation Procedure..................................491

Wiring Diagram........................................................493

Diagnostic Procedure ..............................................494

DTC P1131 SWIRL CONTROL VALVE CONTROL

SOLENOID VALVE (CIRCUIT)....................................512

Component Description ...........................................512

CONSULT-II Reference Value in Data Monitor

Mode........................................................................512

On Board Diagnosis Logic.......................................512

Possible Cause........................................................512

DTC Confirmation Procedure..................................512

Wiring Diagram........................................................514

Diagnostic Procedure ..............................................515

DTC P1140 INTAKE VALVE TIMING CONTROL

POSITION SENSOR....................................................518

Component Description ...........................................518

On Board Diagnosis Logic.......................................518

DTC Confirmation Procedure..................................518

Wiring Diagram........................................................519

Diagnostic Procedure ..............................................520

Component Inspection.............................................522

DTC P1148, P1168 CLOSED LOOP CONTROL

(BANK 1)/(BANK 2).....................................................523

On Board Diagnosis Logic.......................................523

DTC Confirmation Procedure..................................523

Overall Function Check...........................................524

Diagnostic Procedure ..............................................524

DTC P1165 SWIRL CONTROL VALVE CONTROL

VACUUM CHECK SWITCH.........................................525

Component Description ...........................................525

CONSULT-II Reference Value in Data Monitor

Mode........................................................................525

On Board Diagnosis Logic.......................................525

IDX

EC-5

CONTENTS (Cont’d)

Possible Cause........................................................525

DTC Confirmation Procedure..................................526

Wiring Diagram........................................................527

Diagnostic Procedure ..............................................528

DTC P1217 ENGINE OVER TEMPERATURE

(OVERHEAT)...............................................................532

System Description..................................................532

CONSULT-II Reference Value in Data Monitor

Mode........................................................................532

On Board Diagnosis Logic.......................................533

Overall Function Check...........................................534

Wiring Diagram........................................................535

Diagnostic Procedure ..............................................536

Main 12 Causes of Overheating..............................547

Component Inspection.............................................547

DTC P1320 IGNITION SIGNAL...................................549

Component Description ...........................................549

On Board Diagnosis Logic.......................................549

Possible Cause........................................................549

DTC Confirmation Procedure..................................549

Wiring Diagram........................................................550

Diagnostic Procedure ..............................................553

DTC P1336 CRANKSHAFT POSITION SENSOR

(CKPS) (POS) (COG)..................................................560

Component Description ...........................................560

On Board Diagnosis Logic.......................................560

DTC Confirmation Procedure..................................560

Wiring Diagram........................................................561

Diagnostic Procedure ..............................................562

Component Inspection.............................................564

DTC P1401 EGR TEMPERATURE SENSOR.............565

Component Description ...........................................565

On Board Diagnosis Logic.......................................565

Possible Cause........................................................565

DTC Confirmation Procedure..................................566

Wiring Diagram........................................................568

Diagnostic Procedure ..............................................569

DTC P1402 EGR FUNCTION (OPEN)........................572

Description...............................................................572

CONSULT-II Reference Value in Data Monitor

Mode........................................................................573

On Board Diagnosis Logic.......................................573

Possible Cause........................................................573

DTC Confirmation Procedure..................................574

Wiring Diagram........................................................575

Diagnostic Procedure ..............................................576

DTC P1440 EVAP CONTROL SYSTEM (SMALL

LEAK) (POSITIVE PRESSURE) .................................580

On Board Diagnosis Logic.......................................580

Possible Cause........................................................580

DTC Confirmation Procedure..................................581

Diagnostic Procedure ..............................................581

DTC P1441 EVAPORATIVE EMISSION (EVAP)

CONTROL SYSTEM (VERY SMALL LEAK)..............582

On Board Diagnosis Logic.......................................582

DTC Confirmation Procedure..................................583

Overall Function Check...........................................584

Diagnostic Procedure ..............................................585

DTC P1444 EVAP CANISTER PURGE VOLUME

CONTROL SOLENOID VALVE...................................597

Description...............................................................597

CONSULT-II Reference Value in Data Monitor

Mode........................................................................597

On Board Diagnosis Logic.......................................598

Possible Cause........................................................598

DTC Confirmation Procedure..................................598

Wiring Diagram........................................................600

Diagnostic Procedure ..............................................601

DTC P1446 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (CLOSE).........609

Component Description ...........................................609

CONSULT-II Reference Value in Data Monitor

Mode........................................................................609

On Board Diagnosis Logic.......................................609

Possible Cause........................................................609

DTC Confirmation Procedure..................................610

Wiring Diagram........................................................611

Diagnostic Procedure ..............................................612

DTC P1447 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PURGE FLOW

MONITORING..............................................................617

System Description..................................................617

On Board Diagnosis Logic.......................................617

Possible Cause........................................................617

DTC Confirmation Procedure..................................618

Overall Function Check...........................................619

Diagnostic Procedure ..............................................620

DTC P1448 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (OPEN)...........629

Component Description ...........................................629

CONSULT-II Reference Value in Data Monitor

Mode........................................................................629

On Board Diagnosis Logic.......................................629

Possible Cause........................................................629

DTC Confirmation Procedure..................................630

Overall Function Check...........................................631

Wiring Diagram........................................................632

Diagnostic Procedure ..............................................633

DTC P1464 FUEL LEVEL SENSOR CIRCUIT

(GROUND SIGNAL) ....................................................638

Component Description ...........................................638

On Board Diagnostic Logic......................................638

Possible Cause........................................................638

DTC Confirmation Procedure..................................638

EC-6

CONTENTS (Cont’d)

Wiring Diagram........................................................639

Diagnostic Procedure ..............................................640

DTC P1490 VACUUM CUT VALVE BYPASS

VALVE (CIRCUIT)........................................................641

Description...............................................................641

CONSULT-II Reference Value in Data Monitor

Mode........................................................................641

On Board Diagnosis Logic.......................................641

Possible Cause........................................................641

DTC Confirmation Procedure..................................641

Wiring Diagram........................................................643

Diagnostic Procedure ..............................................644

DTC P1491 VACUUM CUT VALVE BYPASS

VALVE..........................................................................647

Description...............................................................647

CONSULT-II Reference Value in Data Monitor

Mode........................................................................647

On Board Diagnosis Logic.......................................647

Possible Cause........................................................648

DTC Confirmation Procedure..................................648

Overall Function Check...........................................649

Diagnostic Procedure ..............................................649

DTC P1605 A/T DIAGNOSIS COMMUNICATION

LINE .............................................................................657

System Description..................................................657

On Board Diagnosis Logic.......................................657

DTC Confirmation Procedure..................................657

Diagnostic Procedure ..............................................657

DTC P1706 PARK/NEUTRAL POSITION (PNP)

SWITCH .......................................................................659

Component Description ...........................................659

CONSULT-II Reference Value in Data Monitor

Mode........................................................................659

On Board Diagnosis Logic.......................................659

DTC Confirmation Procedure..................................659

Overall Function Check...........................................660

Wiring Diagram........................................................661

Diagnostic Procedure For M/T Models....................662

Diagnostic Procedure For A/T Models ....................664

INJECTOR ...................................................................665

Component Description ...........................................665

CONSULT-II Reference Value in Data Monitor

Mode........................................................................665

Wiring Diagram........................................................666

Diagnostic Procedure ..............................................667

START SIGNAL...........................................................670

CONSULT-II Reference Value in Data Monitor

Mode........................................................................670

Wiring Diagram........................................................671

Diagnostic Procedure ..............................................672

FUEL PUMP.................................................................674

System Description..................................................674

Component Description ...........................................674

CONSULT-II Reference Value in Data Monitor

Mode........................................................................674

Wiring Diagram........................................................675

Diagnostic Procedure ..............................................676

Component Inspection.............................................679

POWER STEERING OIL PRESSURE SWITCH.........680

Component Description ...........................................680

CONSULT-II Reference Value in Data Monitor

Mode........................................................................680

Wiring Diagram........................................................681

Diagnostic Procedure ..............................................682

Component Inspection.............................................683

REFRIGERANT PRESSURE SENSOR......................684

Description...............................................................684

Wiring Diagram........................................................685

Diagnostic Procedure ..............................................686

ELECTRICAL LOAD SIGNAL.....................................689

CONSULT-II Reference Value in Data Monitor

Mode........................................................................689

Wiring Diagram........................................................690

Diagnostic Procedure ..............................................692

MIL & DATA LINK CONNECTORS............................698

Wiring Diagram........................................................698

SERVICE DATA AND SPECIFICATIONS (SDS).......699

Fuel Pressure Regulator..........................................699

Idle Speed and Ignition Timing................................699

Mass Air Flow Sensor..............................................699

Engine Coolant Temperature Sensor......................699

EGR Temperature Sensor .......................................699

Fuel Pump ...............................................................699

IACV-AAC Valve......................................................699

Injector.....................................................................699

Resistor....................................................................700

Throttle Position Sensor..........................................700

Front Heated Oxygen Sensor Heater......................700

Calculated Load Value.............................................700

Intake Air Temperature Sensor................................700

EVAP Canister Purge Volume Control Valve ..........700

Rear Heated Oxygen Sensor Heater......................700

Crankshaft Position Sensor (POS)..........................700

Fuel Tank Temperature Sensor ...............................700

QG18DE (CALIF CA)

TROUBLE DIAGNOSIS - INDEX ................................701

Alphabetical & P No. Index for DTC .......................701

PRECAUTIONS ...........................................................707

Supplemental Restraint System (SRS) ″AIR

BAG″ and ″SEAT BELT PRE-TENSIONER″...........707

Precautions for On Board Diagnostic (OBD)

System of Engine and A/T.......................................707

Precautions..............................................................708

IDX

EC-7

CONTENTS (Cont’d)

Wiring Diagrams and Trouble Diagnosis.................710

PREPARATION ...........................................................711

Special Service Tools..............................................711

Commercial Service Tools.......................................711

ENGINE AND EMISSION CONTROL OVERALL

SYSTEM.......................................................................713

Engine Control Component Parts Location.............713

Circuit Diagram........................................................718

System Diagram ......................................................720

System Chart...........................................................721

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION.............................................722

Multiport Fuel Injection (MFI) System .....................722

Distributor Ignition (DI) System ...............................724

Air Conditioning Cut Control....................................725

Fuel Cut Control (at no load & high engine

speed)......................................................................726

Evaporative Emission System.................................726

Positive Crankcase Ventilation................................742

BASIC SERVICE PROCEDURE.................................744

Fuel Pressure Release............................................744

Fuel Pressure Check...............................................744

Injector.....................................................................745

How to Check Idle Speed and Ignition Timing........746

Idle Speed/Ignition Timing/Idle Mixture Ratio

Adjustment...............................................................747

Idle Air Volume Learning .........................................756

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION.............................................................758

Introduction..............................................................758

Two Trip Detection Logic.........................................758

Emission-related Diagnostic Information.................759

Malfunction Indicator Lamp (MIL)............................772

OBD System Operation Chart.................................774

CONSULT-II.............................................................779

Generic Scan Tool (GST)........................................796

TROUBLE DIAGNOSIS - INTRODUCTION................798

Introduction..............................................................798

Work Flow................................................................800

TROUBLE DIAGNOSIS - BASIC INSPECTION.........802

Basic Inspection.......................................................802

TROUBLE DIAGNOSIS - GENERAL

DESCRIPTION.............................................................817

DTC Inspection Priority Chart..................................817

Fail-safe Chart .........................................................818

Symptom Matrix Chart.............................................819

CONSULT-II Reference Value in Data Monitor

Mode........................................................................823

Major Sensor Reference Graph in Data Monitor

Mode........................................................................826

ECM Terminals and Reference Value.....................828

TROUBLE DIAGNOSIS - SPECIFICATION

VALUE..........................................................................838

Description...............................................................838

Testing Condition.....................................................838

Inspection Procedure...............................................838

Diagnostic Procedure ..............................................839

TROUBLE DIAGNOSIS FOR INTERMITTENT

INCIDENT.....................................................................842

Description...............................................................842

Diagnostic Procedure ..............................................842

TROUBLE DIAGNOSIS FOR POWER SUPPLY........843

Main Power Supply and Ground Circuit..................843

DTC P0100 MASS AIR FLOW SENSOR (MAFS)......850

Component Description ...........................................850

CONSULT-II Reference Value in Data Monitor

Mode........................................................................850

On Board Diagnosis Logic.......................................850

DTC Confirmation Procedure..................................851

Overall Function Check...........................................853

Wiring Diagram........................................................854

Diagnostic Procedure ..............................................855

Component Inspection.............................................858

DTC P0105 BAROMETRIC PRESSURE (BARO)

SENSOR ......................................................................859

Component Description ...........................................859

On Board Diagnosis Logic.......................................859

DTC Confirmation Procedure..................................859

Wiring Diagram........................................................860

Diagnostic Procedure ..............................................861

DTC P0110 INTAKE AIR TEMPERATURE

SENSOR ......................................................................864

Component Description ...........................................864

On Board Diagnosis Logic.......................................864

DTC Confirmation Procedure..................................864

Wiring Diagram........................................................866

Diagnostic Procedure ..............................................867

Component Inspection.............................................869

DTC P0115 ENGINE COOLANT TEMPERATURE

SENSOR (ECTS) (CIRCUIT).......................................870

Component Description ...........................................870

CONSULT-II Reference Value in Data Monitor

Mode........................................................................870

On Board Diagnosis Logic.......................................870

DTC Confirmation Procedure..................................871

Wiring Diagram........................................................872

Diagnostic Procedure ..............................................873

Component Inspection.............................................874

DTC P0120 THROTTLE POSITION SENSOR ...........875

Component Description ...........................................875

CONSULT-II Reference Value in Data Monitor

Mode........................................................................875

On Board Diagnosis Logic.......................................876

EC-8

CONTENTS (Cont’d)

DTC Confirmation Procedure..................................876

Wiring Diagram........................................................880

Diagnostic Procedure ..............................................881

Component Inspection.............................................884

DTC P0125 ENGINE COOLANT TEMPERATURE

(ECT) SENSOR............................................................886

Component Description ...........................................886

CONSULT-II Reference Value in Data Monitor

Mode........................................................................886

On Board Diagnosis Logic.......................................886

DTC Confirmation Procedure..................................887

Wiring Diagram........................................................888

Diagnostic Procedure ..............................................889

Component Inspection.............................................890

DTC P0137 HEATED OXYGEN SENSOR 2

(REAR) (MIN. VOLTAGE MONITORING)...................891

Component Description ...........................................891

CONSULT-II Reference Value in Data Monitor

Mode........................................................................891

On Board Diagnosis Logic.......................................891

DTC Confirmation Procedure..................................892

Overall Function Check...........................................892

Wiring Diagram........................................................893

Diagnostic Procedure ..............................................894

Component Inspection.............................................897

DTC P0138 HEATED OXYGEN SENSOR 2

(REAR) (MAX. VOLTAGE MONITORING) .................899

Component Description ...........................................899

CONSULT-II Reference Value in Data Monitor

Mode........................................................................899

On Board Diagnosis Logic.......................................899

DTC Confirmation Procedure..................................900

Overall Function Check...........................................900

Wiring Diagram........................................................901

Diagnostic Procedure ..............................................902

Component Inspection.............................................905

DTC P0139 HEATED OXYGEN SENSOR 2

(REAR) (RESPONSE MONITORING).........................907

Component Description ...........................................907

CONSULT-II Reference Value in Data Monitor

Mode........................................................................907

On Board Diagnosis Logic.......................................907

DTC Confirmation Procedure..................................908

Overall Function Check...........................................908

Wiring Diagram........................................................909

Diagnostic Procedure ..............................................910

Component Inspection.............................................913

DTC P0140 HEATED OXYGEN SENSOR 2

(REAR) (HIGH VOLTAGE)..........................................915

Component Description ...........................................915

CONSULT-II Reference Value in Data Monitor

Mode........................................................................915

On Board Diagnosis Logic.......................................915

DTC Confirmation Procedure..................................916

Overall Function Check...........................................916

Wiring Diagram........................................................917

Diagnostic Procedure ..............................................918

Component Inspection.............................................919

DTC P0141 HEATED OXYGEN SENSOR 2

HEATER (REAR).........................................................921

Description...............................................................921

CONSULT-II Reference Value in Data Monitor

Mode........................................................................921

On Board Diagnosis Logic.......................................921

DTC Confirmation Procedure..................................921

Wiring Diagram........................................................923

Diagnostic Procedure ..............................................924

Component Inspection.............................................925

DTC P0143 HEATED OXYGEN SENSOR 3 (MIN.

VOLTAGE MONITORING)...........................................926

Component Description ...........................................926

CONSULT-II Reference Value in Data Monitor

Mode........................................................................926

On Board Diagnosis Logic.......................................926

DTC Confirmation Procedure..................................927

Overall Function Check...........................................927

Wiring Diagram........................................................928

Diagnostic Procedure ..............................................929

Component Inspection.............................................932

DTC P0144 HEATED OXYGEN SENSOR 3 (MAX.

VOLTAGE MONITORING)...........................................934

Component Description ...........................................934

CONSULT-II Reference Value in Data Monitor

Mode........................................................................934

On Board Diagnosis Logic.......................................934

DTC Confirmation Procedure..................................935

Overall Function Check...........................................935

Wiring Diagram........................................................936

Diagnostic Procedure ..............................................937

Component Inspection.............................................940

DTC P0145 HEATED OXYGEN SENSOR 3

(RESPONSE MONITORING).......................................942

Component Description ...........................................942

CONSULT-II Reference Value in Data Monitor

Mode........................................................................942

On Board Diagnosis Logic.......................................942

DTC Confirmation Procedure..................................943

Overall Function Check...........................................943

Wiring Diagram........................................................944

Diagnostic Procedure ..............................................945

Component Inspection.............................................948

DTC P0146 HEATED OXYGEN SENSOR 3 (HIGH

VOLTAGE)...................................................................950

Component Description ...........................................950

IDX

EC-9

CONTENTS (Cont’d)

CONSULT-II Reference Value in Data Monitor

Mode........................................................................950

On Board Diagnosis Logic.......................................950

DTC Confirmation Procedure..................................950

Overall Function Check...........................................951

Wiring Diagram........................................................952

Diagnostic Procedure ..............................................953

Component Inspection.............................................954

DTC P0147 HEATED OXYGEN SENSOR 3

HEATER.......................................................................956

Description...............................................................956

On Board Diagnosis Logic.......................................956

DTC Confirmation Procedure..................................956

Wiring Diagram........................................................958

Diagnostic Procedure ..............................................959

Component Inspection.............................................960

DTC P0171 FUEL INJECTION SYSTEM

FUNCTION (LEAN SIDE)............................................961

On Board Diagnosis Logic.......................................961

DTC Confirmation Procedure..................................961

Wiring Diagram........................................................963

Diagnostic Procedure ..............................................964

DTC P0172 FUEL INJECTION SYSTEM

FUNCTION (RICH SIDE).............................................968

On Board Diagnosis Logic.......................................968

DTC Confirmation Procedure..................................968

Wiring Diagram........................................................970

Diagnostic Procedure ..............................................971

DTC P0180 FUEL TANK TEMPERATURE

SENSOR ......................................................................975

Component Description ...........................................975

On Board Diagnosis Logic.......................................975

DTC Confirmation Procedure..................................975

Wiring Diagram........................................................977

Diagnostic Procedure ..............................................978

Component Inspection.............................................979

DTC P0217 COOLANT OVERTEMPERATURE

ENRICHMENT PROTECTION.....................................980

System Description..................................................980

CONSULT-II Reference Value in Data Monitor

Mode........................................................................980

On Board Diagnosis Logic.......................................981

Possible Cause........................................................981

Overall Function Check...........................................982

Wiring Diagram........................................................985

Diagnostic Procedure ..............................................986

Main 12 Causes of Overheating..............................997

DTC P0300 - P0304 NO.4-1CYLINDER

MISFIRE, MULTIPLE CYLINDER MISFIRE ...............998

On Board Diagnosis Logic.......................................998

DTC Confirmation Procedure..................................998

Diagnostic Procedure ..............................................999

DTC P0325 KNOCK SENSOR (KS).........................1005

Component Description .........................................1005

DTC Confirmation Procedure................................1005

Wiring Diagram......................................................1006

Diagnostic Procedure ............................................1007

Component Inspection...........................................1008

DTC P0335 CRANKSHAFT POSITION SENSOR

(CKPS) (POS)............................................................1009

Component Description .........................................1009

On Board Diagnosis Logic.....................................1009

DTC Confirmation Procedure................................1009

Wiring Diagram......................................................1010

Diagnostic Procedure ............................................1011

Component Inspection...........................................1012

DTC P0340 CAMSHAFT POSITION SENSOR

(CMPS) (PHASE).......................................................1014

Component Description .........................................1014

On Board Diagnosis Logic.....................................1014

DTC Confirmation Procedure................................1014

Wiring Diagram......................................................1015

Diagnostic Procedure ............................................1016

Component Inspection...........................................1019

DTC P0400 EGR FUNCTION (CLOSE)....................1020

Description.............................................................1020

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1021

On Board Diagnosis Logic.....................................1021

Possible Cause......................................................1021

DTC Confirmation Procedure................................1022

Wiring Diagram......................................................1024

Diagnostic Procedure ............................................1025

DTC P0403 EGR VOLUME CONTROL VALVE

(CIRCUIT)...................................................................1029

Description.............................................................1029

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1030

On Board Diagnosis Logic.....................................1030

Possible Cause......................................................1030

DTC Confirmation Procedure................................1030

Wiring Diagram......................................................1032

Diagnostic Procedure ............................................1033

DTC P0420 THREE WAY CATALYST FUNCTION .1036

On Board Diagnosis Logic.....................................1036

DTC Confirmation Procedure................................1036

Overall Function Check.........................................1037

Diagnostic Procedure ............................................1037

DTC P0440 EVAP CONTROL SYSTEM (SMALL

LEAK) (NEGATIVE PRESSURE)..............................1040

On Board Diagnosis Logic.....................................1040

Possible Cause......................................................1040

DTC Confirmation Procedure................................1041

Diagnostic Procedure ............................................1042

EC-10

CONTENTS (Cont’d)

DTC P0443 EVAP CANISTER PURGE VOLUME

CONTROL SOLENOID VALVE (CIRCUIT)...............1055

Description.............................................................1055

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1055

On Board Diagnosis Logic.....................................1055

Possible Cause......................................................1055

DTC Confirmation Procedure................................1055

Wiring Diagram......................................................1057

Diagnostic Procedure ............................................1058

DTC P0446 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (CIRCUIT) ....1061

Component Description .........................................1061

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1061

On Board Diagnosis Logic.....................................1061

Possible Cause......................................................1061

DTC Confirmation Procedure................................1062

Wiring Diagram......................................................1063

Diagnostic Procedure ............................................1064

DTC P0450 EVAPORATIVE EMISSION (EVAP)

CONTROL SYSTEM PRESSURE SENSOR ............1068

Component Description .........................................1068

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1068

On Board Diagnosis Logic.....................................1068

Possible Cause......................................................1068

DTC Confirmation Procedure................................1069

Wiring Diagram......................................................1070

Diagnostic Procedure ............................................1071

DTC P0455 EVAP CONTROL SYSTEM (GROSS

LEAK).........................................................................1080

On Board Diagnosis Logic.....................................1080

Possible Cause......................................................1080

DTC Confirmation Procedure................................1082

Diagnostic Procedure ............................................1083

DTC P0460 FUEL LEVEL SENSOR FUNCTION

(SLOSH).....................................................................1094

Component Description .........................................1094

On Board Diagnostic Logic....................................1094

Possible Cause......................................................1094

DTC Confirmation Procedure................................1094

Wiring Diagram......................................................1095

Diagnostic Procedure ............................................1096

DTC P0461 FUEL LEVEL SENSOR FUNCTION.....1098

Component Description .........................................1098

On Board Diagnostic Logic....................................1098

Possible Cause......................................................1098

Overall Function Check.........................................1098

DTC P0464 FUEL LEVEL SENSOR CIRCUIT.........1100

Component Description .........................................1100

On Board Diagnostic Logic....................................1100

Possible Cause......................................................1100

DTC Confirmation Procedure................................1100

Wiring Diagram......................................................1101

Diagnostic Procedure ............................................1102

DTC P0500 VEHICLE SPEED SENSOR (VSS) .......1104

Component Description .........................................1104

On Board Diagnosis Logic.....................................1104

DTC Confirmation Procedure................................1104

Overall Function Check.........................................1105

Wiring Diagram......................................................1106

Diagnostic Procedure ............................................1107

DTC P0505 IDLE AIR CONTROL VALVE (IACV) -

AUXILIARY AIR CONTROL (AAC) VALVE .............1108

Description.............................................................1108

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1109

On Board Diagnosis Logic.....................................1109

DTC Confirmation Procedure................................1109

Wiring Diagram...................................................... 1111

Diagnostic Procedure ............................................1112

DTC P0510 CLOSED THROTTLE POSITION

SWITCH .....................................................................1117

Component Description .........................................1117

On Board Diagnosis Logic..................................... 1117

DTC Confirmation Procedure................................1117

Overall Function Check.........................................1118

Wiring Diagram......................................................1119

Diagnostic Procedure ............................................1120

DTC P0600 A/T CONTROL.......................................1125

System Description................................................1125

On Board Diagnosis Logic.....................................1125

DTC Confirmation Procedure................................1125

Wiring Diagram......................................................1126

Diagnostic Procedure ............................................1127

DTC P0605 ECM .......................................................1128

Component Description .........................................1128

On Board Diagnosis Logic.....................................1128

DTC Confirmation Procedure................................1128

Diagnostic Procedure ............................................1129

DTC P1108 MANIFOLD ABSOLUTE PRESSURE

(MAP) SENSOR.........................................................1130

Component Description .........................................1130

On Board Diagnosis Logic.....................................1130

DTC Confirmation Procedure................................1130

Wiring Diagram......................................................1132

Diagnostic Procedure ............................................1133

DTC P1110 INTAKE VALVE TIMING CONTROL.....1137

Description.............................................................1137

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1138

On Board Diagnosis Logic.....................................1138

DTC Confirmation Procedure................................1138

IDX

EC-11

CONTENTS (Cont’d)

Wiring Diagram......................................................1140

Diagnostic Procedure ............................................1141

Component Inspection...........................................1142

DTC P1111 INTAKE VALVE TIMING CONTROL

SOLENOID VALVE....................................................1143

Component Description .........................................1143

Operation...............................................................1143

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1143

On Board Diagnosis Logic.....................................1143

DTC Confirmation Procedure................................1143

Wiring Diagram......................................................1145

Diagnostic Procedure ............................................1146

Component Inspection...........................................1147

DTC P1126 THERMOSTAT FUNCTION...................1148

On Board Diagnosis Logic.....................................1148

Possible Cause......................................................1148

DTC Confirmation Procedure................................1148

Diagnostic Procedure ............................................1149

DTC P1132 SWIRL CONTROL VALVE (CIRCUIT)..1150

Component Description .........................................1150

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1150

On Board Diagnosis Logic.....................................1150

Possible Cause......................................................1150

DTC Confirmation Procedure................................1151

Wiring Diagram......................................................1152

Diagnostic Procedure ............................................1153

DTC P1137 SWIRL CONTROL VALVE POSITION

SENSOR ....................................................................1155

Component Description .........................................1155

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1155

On Board Diagnosis Logic.....................................1155

Possible Cause......................................................1155

DTC Confirmation Procedure................................1156

Wiring Diagram......................................................1157

Diagnostic Procedure ............................................1158

DTC P1138 SWIRL CONTROL VALVE....................1162

Description.............................................................1162

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1163

On Board Diagnosis Logic.....................................1163

Possible Cause......................................................1163

DTC Confirmation Procedure................................1164

Wiring Diagram......................................................1165

Diagnostic Procedure ............................................1166

DTC P1140 INTAKE VALVE TIMING CONTROL

POSITION SENSOR..................................................1170

Component Description .........................................1170

On Board Diagnosis Logic.....................................1170

DTC Confirmation Procedure................................1170

Wiring Diagram......................................................1171

Diagnostic Procedure ............................................1172

Component Inspection...........................................1174

DTC P1148 CLOSED LOOP CONTROL ..................1175

On Board Diagnosis Logic.....................................1175

DTC P1217 ENGINE OVER TEMPERATURE

(OVERHEAT).............................................................1176

System Description................................................1176

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1176

On Board Diagnosis Logic.....................................1177

Overall Function Check.........................................1178

Wiring Diagram......................................................1179

Diagnostic Procedure ............................................1180

Main 12 Causes of Overheating............................1191

Component Inspection...........................................1191

DTC P1271 AIR FUEL RATIO (A/F) SENSOR 1

(LOW VOLTAGE) ......................................................1193

Component Description .........................................1193

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1193

On Board Diagnosis Logic.....................................1193

DTC Confirmation Procedure................................1194

Overall Function Check.........................................1194

Wiring Diagram......................................................1196

Diagnostic Procedure ............................................1197

DTC P1272 AIR FUEL RATIO (A/F) SENSOR 1

(HIGH VOLTAGE)......................................................1198

Component Description .........................................1198

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1198

On Board Diagnosis Logic.....................................1198

DTC Confirmation Procedure................................1199

Overall Function Check.........................................1199

Wiring Diagram......................................................1201

Diagnostic Procedure ............................................1202

DTC P1273 AIR FUEL RATIO (A/F) SENSOR 1

(LEAN SHIFT MONITORING)...................................1203

Component Description .........................................1203

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1203

On Board Diagnosis Logic.....................................1203

DTC Confirmation Procedure................................1204

Overall Function Check.........................................1204

Wiring Diagram......................................................1205

Diagnostic Procedure ............................................1206

DTC P1274 AIR FUEL RATIO (A/F) SENSOR 1

(RICH SHIFT MONITORING)....................................1209

Component Description .........................................1209

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1209

On Board Diagnosis Logic.....................................1209

EC-12

CONTENTS (Cont’d)

DTC Confirmation Procedure................................1210

Overall Function Check.........................................1210

Wiring Diagram......................................................1211

Diagnostic Procedure ............................................1212

DTC P1275 AIR FUEL RATIO (A/F) SENSOR 1

(RESPONSE MONITORING).....................................1215

Component Description .........................................1215

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1215

On Board Diagnosis Logic.....................................1215

DTC Confirmation Procedure................................1216

Overall Function Check.........................................1216

Wiring Diagram......................................................1218

Diagnostic Procedure ............................................1219

DTC P1276 AIR FUEL RATIO (A/F) SENSOR 1

(ACTIVITY MONITORING) ........................................1223

Component Description .........................................1223

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1223

On Board Diagnosis Logic.....................................1223

DTC Confirmation Procedure................................1224

Overall Function Check.........................................1224

Wiring Diagram......................................................1226

Diagnostic Procedure ............................................1227

DTC P1277 AIR FUEL RATIO (A/F) SENSOR 1

HEATER.....................................................................1228

Description.............................................................1228

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1228

On Board Diagnosis Logic.....................................1228

DTC Confirmation Procedure................................1228

Wiring Diagram......................................................1230

Diagnostic Procedure ............................................1231

Component Inspection...........................................1232

DTC P1320 IGNITION SIGNAL.................................1233

Component Description .........................................1233

On Board Diagnosis Logic.....................................1233

Possible Cause......................................................1233

DTC Confirmation Procedure................................1233

Wiring Diagram......................................................1234

Diagnostic Procedure ............................................1237

DTC P1401 EGR TEMPERATURE SENSOR...........1244

Component Description .........................................1244

On Board Diagnosis Logic.....................................1244

Possible Cause......................................................1244

DTC Confirmation Procedure................................1245

Wiring Diagram......................................................1247

Diagnostic Procedure ............................................1248

DTC P1402 EGR FUNCTION (OPEN)......................1251

Description.............................................................1251

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1252

On Board Diagnosis Logic.....................................1252

Possible Cause......................................................1252

DTC Confirmation Procedure................................1253

Wiring Diagram......................................................1254

Diagnostic Procedure ............................................1255

DTC P1440 EVAP CONTROL SYSTEM (SMALL

LEAK) (POSITIVE PRESSURE) ...............................1258

On Board Diagnosis Logic.....................................1258

Possible Cause......................................................1258

DTC Confirmation Procedure................................1259

Diagnostic Procedure ............................................1259

DTC P1444 EVAP CANISTER PURGE VOLUME

CONTROL SOLENOID VALVE.................................1260

Description.............................................................1260

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1260

On Board Diagnosis Logic.....................................1261

Possible Cause......................................................1261

DTC Confirmation Procedure................................1261

Wiring Diagram......................................................1263

Diagnostic Procedure ............................................1264

DTC P1446 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (CLOSE).......1272

Component Description .........................................1272

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1272

On Board Diagnosis Logic.....................................1272

Possible Cause......................................................1272

DTC Confirmation Procedure................................1273

Wiring Diagram......................................................1274

Diagnostic Procedure ............................................1275

DTC P1447 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PURGE FLOW

MONITORING............................................................1280

System Description................................................1280

On Board Diagnosis Logic.....................................1280

Possible Cause......................................................1280

DTC Confirmation Procedure................................1281

Overall Function Check.........................................1282

Diagnostic Procedure ............................................1283

DTC P1448 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (OPEN).........1292

Component Description .........................................1292

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1292

On Board Diagnosis Logic.....................................1292

Possible Cause......................................................1292

DTC Confirmation Procedure................................1293

Overall Function Check.........................................1294

Wiring Diagram......................................................1295

Diagnostic Procedure ............................................1296

IDX

EC-13

CONTENTS (Cont’d)

DTC P1464 FUEL LEVEL SENSOR CIRCUIT

(GROUND SIGNAL) ..................................................1301

Component Description .........................................1301

On Board Diagnostic Logic....................................1301

Possible Cause......................................................1301

DTC Confirmation Procedure................................1301

Wiring Diagram......................................................1302

Diagnostic Procedure ............................................1303

DTC P1490 VACUUM CUT VALVE BYPASS

VALVE (CIRCUIT)......................................................1304

Description.............................................................1304

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1304

On Board Diagnosis Logic.....................................1304

Possible Cause......................................................1304

DTC Confirmation Procedure................................1304

Wiring Diagram......................................................1306

Diagnostic Procedure ............................................1307

DTC P1491 VACUUM CUT VALVE BYPASS

VALVE........................................................................1310

Description.............................................................1310

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1310

On Board Diagnosis Logic.....................................1310

Possible Cause......................................................1311

DTC Confirmation Procedure................................1311

Overall Function Check.........................................1312

Wiring Diagram......................................................1313

Diagnostic Procedure ............................................1314

DTC P1605 A/T DIAGNOSIS COMMUNICATION

LINE ...........................................................................1322

System Description................................................1322

On Board Diagnosis Logic.....................................1322

DTC Confirmation Procedure................................1322

Wiring Diagram......................................................1323

Diagnostic Procedure ............................................1324

DTC P1706 PARK/NEUTRAL POSITION (PNP)

SWITCH .....................................................................1325

Component Description .........................................1325

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1325

On Board Diagnosis Logic.....................................1325

DTC Confirmation Procedure................................1325

Overall Function Check.........................................1326

Wiring Diagram......................................................1327

Diagnostic Procedure ............................................1328

INJECTOR .................................................................1329

Component Description .........................................1329

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1329

Wiring Diagram......................................................1330

Diagnostic Procedure ............................................1331

START SIGNAL.........................................................1334

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1334

Wiring Diagram......................................................1335

Diagnostic Procedure ............................................1336

FUEL PUMP...............................................................1338

System Description................................................1338

Component Description .........................................1338

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1338

Wiring Diagram......................................................1339

Diagnostic Procedure ............................................1340

Component Inspection...........................................1343

POWER STEERING OIL PRESSURE SWITCH.......1344

Component Description .........................................1344

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1344

Wiring Diagram......................................................1345

Diagnostic Procedure ............................................1346

Component Inspection...........................................1347

REFRIGERANT PRESSURE SENSOR....................1348

Description.............................................................1348

Wiring Diagram......................................................1349

Diagnostic Procedure ............................................1350

ELECTRICAL LOAD SIGNAL...................................1353

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1353

Wiring Diagram......................................................1354

Diagnostic Procedure ............................................1356

MIL & DATA LINK CONNECTORS..........................1363

Wiring Diagram......................................................1363

SERVICE DATA AND SPECIFICATIONS (SDS).....1364

Fuel Pressure Regulator........................................1364

Idle Speed and Ignition Timing..............................1364

Mass Air Flow Sensor............................................1364

Engine Coolant Temperature Sensor....................1364

EGR Temperature Sensor .....................................1364

Fuel Pump .............................................................1364

IACV-AAC Valve....................................................1364

Injector...................................................................1364

Resistor..................................................................1364

Throttle Position Sensor........................................1365

Air Fuel Ratio (A/F) Sensor 1 Heater....................1365

Calculated Load Value...........................................1365

Intake Air Temperature Sensor..............................1365

EVAP Canister Purge Volume Control Valve ........1365

Heated Oxygen Sensor 2 Heater..........................1365

Crankshaft Position Sensor (POS)........................1365

Fuel Tank Temperature Sensor .............................1365

Heated Oxygen Sensor 3 Heater..........................1365

EC-14

CONTENTS (Cont’d)

SR20DE

TROUBLE DIAGNOSIS - INDEX ..............................1366

Alphabetical & P No. Index for DTC .....................1366

PRECAUTIONS .........................................................1372

Supplemental Restraint System (SRS) ″AIR

BAG″ and ″SEAT BELT PRE-TENSIONER″.........1372

Precautions for On Board Diagnostic (OBD)

System of Engine and A/T.....................................1372

Precautions............................................................1373

Wiring Diagrams and Trouble Diagnosis...............1375

PREPARATION .........................................................1376

Special Service Tools............................................1376

Commercial Service Tools.....................................1376

ENGINE AND EMISSION CONTROL OVERALL

SYSTEM.....................................................................1378

Engine Control Component Parts Location...........1378

Circuit Diagram......................................................1381

System Diagram ....................................................1383

Vacuum Hose Drawing..........................................1384

System Chart.........................................................1385

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION...........................................1386

Multiport Fuel Injection (MFI) System ...................1386

Distributor Ignition (DI) System .............................1388

Air Conditioning Cut Control..................................1389

Fuel Cut Control (at no load & high engine

speed)....................................................................1390

Evaporative Emission System...............................1390

Positive Crankcase Ventilation..............................1406

BASIC SERVICE PROCEDURE...............................1408

Fuel Pressure Release..........................................1408

Fuel Pressure Check.............................................1408

Fuel Pressure Regulator Check ............................1409

Injector...................................................................1409

Throttle Opener......................................................1411

Idle Speed/Ignition Timing/Idle Mixture Ratio

Adjustment.............................................................1412

Idle Air Volume Learning .......................................1424

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION...........................................................1426

Introduction............................................................1426

Two Trip Detection Logic.......................................1426

Emission-related Diagnostic Information...............1427

Malfunction Indicator Lamp (MIL)..........................1440

OBD System Operation Chart...............................1442

CONSULT-II...........................................................1447

Generic Scan Tool (GST)......................................1464

TROUBLE DIAGNOSIS - INTRODUCTION..............1466

Introduction............................................................1466

Work Flow..............................................................1468

TROUBLE DIAGNOSIS - BASIC INSPECTION.......1470

Basic Inspection.....................................................1470

TROUBLE DIAGNOSIS - GENERAL

DESCRIPTION...........................................................1484

DTC Inspection Priority Chart................................1484

Fail-safe Chart .......................................................1485

Symptom Matrix Chart...........................................1486

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1490

Major Sensor Reference Graph in Data Monitor

Mode......................................................................1493

ECM Terminals and Reference Value...................1495

TROUBLE DIAGNOSES............................................1504

Description.............................................................1504

Diagnostic Procedure ............................................1505

TROUBLE DIAGNOSIS FOR INTERMITTENT

INCIDENT...................................................................1508

Description.............................................................1508

Diagnostic Procedure ............................................1508

TROUBLE DIAGNOSIS FOR POWER SUPPLY......1509

Main Power Supply and Ground Circuit................1509

DTC P0100 MASS AIR FLOW SENSOR (MAFS)....1515

Component Description .........................................1515

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1515

On Board Diagnosis Logic.....................................1515

DTC Confirmation Procedure................................1516

Overall Function Check.........................................1518

Wiring Diagram......................................................1519

Diagnostic Procedure ............................................1520

Component Inspection...........................................1523

DTC P0105 ABSOLUTE PRESSURE SENSOR......1524

Component Description .........................................1524

On Board Diagnosis Logic.....................................1524

DTC Confirmation Procedure................................1524

Wiring Diagram......................................................1525

Diagnostic Procedure ............................................1526

DTC P0110 INTAKE AIR TEMPERATURE

SENSOR ....................................................................1529

Component Description .........................................1529

On Board Diagnosis Logic.....................................1529

DTC Confirmation Procedure................................1529

Wiring Diagram......................................................1531

Diagnostic Procedure ............................................1532

Component Inspection...........................................1534

DTC P0115 ENGINE COOLANT TEMPERATURE

SENSOR (ECTS) (CIRCUIT).....................................1535

Component Description .........................................1535

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1535

On Board Diagnosis Logic.....................................1535

DTC Confirmation Procedure................................1536

Wiring Diagram......................................................1537

Diagnostic Procedure ............................................1538

IDX

EC-15

CONTENTS (Cont’d)

Component Inspection...........................................1539

DTC P0120 THROTTLE POSITION SENSOR .........1540

Component Description .........................................1540

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1540

On Board Diagnosis Logic.....................................1541

DTC Confirmation Procedure................................1541

Wiring Diagram......................................................1545

Diagnostic Procedure ............................................1546

Component Inspection...........................................1549

DTC P0125 ENGINE COOLANT TEMPERATURE

(ECT) SENSOR..........................................................1551

Component Description .........................................1551

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1551

On Board Diagnosis Logic.....................................1551

DTC Confirmation Procedure................................1552

Wiring Diagram......................................................1553

Diagnostic Procedure ............................................1554

Component Inspection...........................................1555

DTC P0130 HEATED OXYGEN SENSOR 1

(FRONT) (CIRCUIT)...................................................1556

Component Description .........................................1556

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1556

On Board Diagnosis Logic.....................................1556

DTC Confirmation Procedure................................1557

Overall Function Check.........................................1557

Wiring Diagram......................................................1559

Diagnostic Procedure ............................................1560

Component Inspection...........................................1561

DTC P0131 HEATED OXYGEN SENSOR 1

(FRONT) (LEAN SHIFT MONITORING) ...................1563

Component Description .........................................1563

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1563

On Board Diagnosis Logic.....................................1563

DTC Confirmation Procedure................................1564

Overall Function Check.........................................1564

Diagnostic Procedure ............................................1565

Component Inspection...........................................1567

DTC P0132 HEATED OXYGEN SENSOR 1

(FRONT) (RICH SHIFT MONITORING) ....................1569

Component Description .........................................1569

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1569

On Board Diagnosis Logic.....................................1569

DTC Confirmation Procedure................................1570

Overall Function Check.........................................1570

Diagnostic Procedure ............................................1572

Component Inspection...........................................1573

DTC P0133 HEATED OXYGEN SENSOR 1

(FRONT) (RESPONSE MONITORING).....................1575

Component Description .........................................1575

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1575

On Board Diagnosis Logic.....................................1575

DTC Confirmation Procedure................................1576

Overall Function Check.........................................1576

Wiring Diagram......................................................1578

Diagnostic Procedure ............................................1579

Component Inspection...........................................1582

DTC P0134 HEATED OXYGEN SENSOR 1

(FRONT) (HIGH VOLTAGE)......................................1584

Component Description .........................................1584

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1584

On Board Diagnosis Logic.....................................1584

DTC Confirmation Procedure................................1585

Wiring Diagram......................................................1586

Diagnostic Procedure ............................................1587

Component Inspection...........................................1588

DTC P0135 HEATED OXYGEN SENSOR 1

(FRONT) HEATER.....................................................1590

Description.............................................................1590

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1590

On Board Diagnosis Logic.....................................1590

DTC Confirmation Procedure................................1590

Wiring Diagram......................................................1592

Diagnostic Procedure ............................................1593

Component Inspection...........................................1594

DTC P0137 HEATED OXYGEN SENSOR 2

(REAR) (MIN. VOLTAGE MONITORING).................1595

Component Description .........................................1595

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1595

On Board Diagnosis Logic.....................................1595

DTC Confirmation Procedure................................1596

Overall Function Check.........................................1596

Wiring Diagram......................................................1597

Diagnostic Procedure ............................................1598

Component Inspection...........................................1601

DTC P0138 HEATED OXYGEN SENSOR 2

(REAR) (MAX. VOLTAGE MONITORING) ...............1603

Component Description .........................................1603

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1603

On Board Diagnosis Logic.....................................1603

DTC Confirmation Procedure................................1604

Overall Function Check.........................................1604

Wiring Diagram......................................................1605

Diagnostic Procedure ............................................1606

EC-16

CONTENTS (Cont’d)

Component Inspection...........................................1609

DTC P0139 HEATED OXYGEN SENSOR 2

(REAR) (RESPONSE MONITORING).......................1611

Component Description .........................................1611

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1611

On Board Diagnosis Logic.....................................1611

DTC Confirmation Procedure................................1612

Overall Function Check.........................................1612

Wiring Diagram......................................................1613

Diagnostic Procedure ............................................1614

Component Inspection...........................................1617

DTC P0140 HEATED OXYGEN SENSOR 2

(REAR) (HIGH VOLTAGE)........................................1619

Component Description .........................................1619

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1619

On Board Diagnosis Logic.....................................1619

DTC Confirmation Procedure................................1619

Overall Function Check.........................................1620

Wiring Diagram......................................................1621

Diagnostic Procedure ............................................1622

Component Inspection...........................................1623

DTC P0141 HEATED OXYGEN SENSOR 2

(REAR) HEATER.......................................................1625

Description.............................................................1625

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1625

On Board Diagnosis Logic.....................................1625

DTC Confirmation Procedure................................1625

Wiring Diagram......................................................1627

Diagnostic Procedure ............................................1628

Component Inspection...........................................1629

DTC P0171 FUEL INJECTION SYSTEM

FUNCTION (LEAN SIDE)..........................................1630

On Board Diagnosis Logic.....................................1630

DTC Confirmation Procedure................................1630

Wiring Diagram......................................................1632

Diagnostic Procedure ............................................1633

DTC P0172 FUEL INJECTION SYSTEM

FUNCTION (RICH SIDE)...........................................1637

On Board Diagnosis Logic.....................................1637

DTC Confirmation Procedure................................1637

Wiring Diagram......................................................1639

Diagnostic Procedure ............................................1640

DTC P0180 FUEL TANK TEMPERATURE

SENSOR ....................................................................1644

Component Description .........................................1644

On Board Diagnosis Logic.....................................1644

DTC Confirmation Procedure................................1644

Wiring Diagram......................................................1646

Diagnostic Procedure ............................................1647

Component Inspection...........................................1648

DTC P0217 COOLANT OVERTEMPERATURE

ENRICHMENT PROTECTION...................................1649

System Description................................................1649

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1649

On Board Diagnosis Logic.....................................1650

Possible Cause......................................................1650

Overall Function Check.........................................1651

Wiring Diagram......................................................1654

Diagnostic Procedure ............................................1655

Main 12 Causes of Overheating............................1666

DTC P0300 - P0304 NO.4-1CYLINDER

MISFIRE, MULTIPLE CYLINDER MISFIRE .............1667

On Board Diagnosis Logic.....................................1667

DTC Confirmation Procedure................................1667

Diagnostic Procedure ............................................1668

Component Inspection...........................................1673

DTC P0325 KNOCK SENSOR (KS).........................1674

Component Description .........................................1674

On Board Diagnosis Logic.....................................1674

DTC Confirmation Procedure................................1674

Wiring Diagram......................................................1675

Diagnostic Procedure ............................................1676

Component Inspection...........................................1677

DTC P0335 CRANKSHAFT POSITION SENSOR

(CKPS) (OBD)............................................................1678

Component Description .........................................1678

On Board Diagnosis Logic.....................................1678

DTC Confirmation Procedure................................1678

Wiring Diagram......................................................1679

Diagnostic Procedure ............................................1680

Component Inspection...........................................1682

DTC P0340 CAMSHAFT POSITION SENSOR

(CMPS) (PHASE).......................................................1683

Component Description .........................................1683

On Board Diagnosis Logic.....................................1683

DTC Confirmation Procedure................................1683

Wiring Diagram......................................................1685

Diagnostic Procedure ............................................1686

Component Inspection...........................................1689

DTC P0400 EGR FUNCTION (CLOSE)....................1690

Description.............................................................1690

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1691

On Board Diagnosis Logic.....................................1691

Possible Cause......................................................1691

DTC Confirmation Procedure................................1692

Wiring Diagram......................................................1694

Diagnostic Procedure ............................................1695

DTC P0403 EGR VOLUME CONTROL VALVE

(CIRCUIT)...................................................................1699

IDX

EC-17

CONTENTS (Cont’d)

Description.............................................................1699

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1700

On Board Diagnosis Logic.....................................1700

Possible Cause......................................................1700

DTC Confirmation Procedure................................1700

Wiring Diagram......................................................1702

Diagnostic Procedure ............................................1703

DTC P0420 THREE WAY CATALYST FUNCTION .1706

On Board Diagnosis Logic.....................................1706

DTC Confirmation Procedure................................1706

Overall Function Check.........................................1707

Diagnostic Procedure ............................................1707

DTC P0440 EVAP CONTROL SYSTEM (SMALL

LEAK) (NEGATIVE PRESSURE)..............................1710

On Board Diagnosis Logic.....................................1710

Possible Cause......................................................1710

DTC Confirmation Procedure................................1711

Diagnostic Procedure ............................................1712

DTC P0443 EVAP CANISTER PURGE VOLUME

CONTROL SOLENOID VALVE (CIRCUIT)...............1725

Description.............................................................1725

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1725

On Board Diagnosis Logic.....................................1726

Possible Cause......................................................1726

DTC Confirmation Procedure................................1726

Wiring Diagram......................................................1727

Diagnostic Procedure ............................................1728

DTC P0446 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (CIRCUIT) ....1731

Component Description .........................................1731

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1731

On Board Diagnosis Logic.....................................1731

Possible Cause......................................................1731

DTC Confirmation Procedure................................1732

Wiring Diagram......................................................1733

Diagnostic Procedure ............................................1734

DTC P0450 EVAPORATIVE EMISSION (EVAP)

CONTROL SYSTEM PRESSURE SENSOR ............1738

Component Description .........................................1738

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1738

On Board Diagnosis Logic.....................................1738

Possible Cause......................................................1738

DTC Confirmation Procedure................................1739

Wiring Diagram......................................................1740

Diagnostic Procedure ............................................1741

DTC P0455 EVAP CONTROL SYSTEM (GROSS

LEAK).........................................................................1750

On Board Diagnosis Logic.....................................1750

Possible Cause......................................................1750

DTC Confirmation Procedure................................1751

Diagnostic Procedure ............................................1752

DTC P0460 FUEL LEVEL SENSOR FUNCTION

(SLOSH).....................................................................1762

Component Description .........................................1762

On Board Diagnostic Logic....................................1762

Possible Cause......................................................1762

DTC Confirmation Procedure................................1762

Wiring Diagram......................................................1763

Diagnostic Procedure ............................................1764

DTC P0461 FUEL LEVEL SENSOR FUNCTION.....1766

Component Description .........................................1766

On Board Diagnostic Logic....................................1766

Possible Cause......................................................1766

Overall Function Check.........................................1766

DTC P0464 FUEL LEVEL SENSOR CIRCUIT.........1768

Component Description .........................................1768

On Board Diagnostic Logic....................................1768

Possible Cause......................................................1768

DTC Confirmation Procedure................................1768

Wiring Diagram......................................................1769

Diagnostic Procedure ............................................1770

DTC P0500 VEHICLE SPEED SENSOR (VSS) .......1772

Component Description .........................................1772

On Board Diagnosis Logic.....................................1772

DTC Confirmation Procedure................................1772

Overall Function Check.........................................1773

Wiring Diagram......................................................1774

Diagnostic Procedure ............................................1775

DTC P0505 IDLE AIR CONTROL VALVE (IACV) -

AUXILIARY AIR CONTROL (AAC) VALVE .............1776

Description.............................................................1776

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1777

On Board Diagnosis Logic.....................................1777

DTC Confirmation Procedure................................1777

Wiring Diagram......................................................1779

Diagnostic Procedure ............................................1780

DTC P0510 CLOSED THROTTLE POSITION

SWITCH .....................................................................1785

Component Description .........................................1785

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1785

On Board Diagnosis Logic.....................................1785

DTC Confirmation Procedure................................1785

Overall Function Check.........................................1786

Wiring Diagram......................................................1787

Diagnostic Procedure ............................................1788

DTC P0600 A/T CONTROL.......................................1793

System Description................................................1793

On Board Diagnosis Logic.....................................1793

EC-18

CONTENTS (Cont’d)

DTC Confirmation Procedure................................1793

Wiring Diagram......................................................1794

Diagnostic Procedure ............................................1795

DTC P0605 ECM .......................................................1796

Component Description .........................................1796

On Board Diagnosis Logic.....................................1796

DTC Confirmation Procedure................................1796

Diagnostic Procedure ............................................1797

DTC P1126 THERMOSTAT FUNCTION...................1798

On Board Diagnosis Logic.....................................1798

Possible Cause......................................................1798

DTC Confirmation Procedure................................1798

Diagnostic Procedure ............................................1799

DTC P1148 CLOSED LOOP CONTROL ..................1800

On Board Diagnosis Logic.....................................1800

DTC Confirmation Procedure................................1800

Overall Function Check.........................................1801

Diagnostic Procedure ............................................1801

DTC P1217 ENGINE OVER TEMPERATURE

(OVERHEAT).............................................................1802

System Description................................................1802

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1802

On Board Diagnosis Logic.....................................1803

Overall Function Check.........................................1804

Wiring Diagram......................................................1805

Diagnostic Procedure ............................................1806

Main 12 Causes of Overheating............................1818

Component Inspection...........................................1818

DTC P1320 IGNITION SIGNAL.................................1820

Component Description .........................................1820

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1820

On Board Diagnosis Logic.....................................1820

DTC Confirmation Procedure................................1820

Wiring Diagram......................................................1821

Diagnostic Procedure ............................................1822

Component Inspection...........................................1825

DTC P1336 CRANKSHAFT POSITION SENSOR

(CKPS) (POS) (COG)................................................1826

Component Description .........................................1826

On Board Diagnosis Logic.....................................1826

DTC Confirmation Procedure................................1826

Wiring Diagram......................................................1827

Diagnostic Procedure ............................................1828

Component Inspection...........................................1830

DTC P1401 EGR TEMPERATURE SENSOR...........1831

Component Description .........................................1831

On Board Diagnosis Logic.....................................1831

Possible Cause......................................................1831

DTC Confirmation Procedure................................1832

Wiring Diagram......................................................1834

Diagnostic Procedure ............................................1835

DTC P1402 EGR FUNCTION (OPEN)......................1838

Description.............................................................1838

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1839

On Board Diagnosis Logic.....................................1839

Possible Cause......................................................1839

DTC Confirmation Procedure................................1840

Wiring Diagram......................................................1841

Diagnostic Procedure ............................................1842

DTC P1440 EVAP CONTROL SYSTEM (SMALL

LEAK) (POSITIVE PRESSURE) ...............................1845

On Board Diagnosis Logic.....................................1845

Possible Cause......................................................1845

DTC Confirmation Procedure................................1846

Diagnostic Procedure ............................................1846

DTC P1444 EVAP CANISTER PURGE VOLUME

CONTROL SOLENOID VALVE.................................1847

Description.............................................................1847

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1847

On Board Diagnosis Logic.....................................1848

Possible Cause......................................................1848

DTC Confirmation Procedure................................1848

Wiring Diagram......................................................1850

Diagnostic Procedure ............................................1851

DTC P1446 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (CLOSE).......1859

Component Description .........................................1859

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1859

On Board Diagnosis Logic.....................................1859

Possible Cause......................................................1859

DTC Confirmation Procedure................................1860

Wiring Diagram......................................................1861

Diagnostic Procedure ............................................1862

DTC P1447 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PURGE FLOW

MONITORING............................................................1867

System Description................................................1867

On Board Diagnosis Logic.....................................1867

Possible Cause......................................................1867

DTC Confirmation Procedure................................1868

Overall Function Check.........................................1868

Diagnostic Procedure ............................................1870

DTC P1448 EVAPORATIVE EMISSION (EVAP)

CANISTER VENT CONTROL VALVE (OPEN).........1879

Component Description .........................................1879

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1879

On Board Diagnosis Logic.....................................1879

Possible Cause......................................................1879

IDX

EC-19

CONTENTS (Cont’d)

DTC Confirmation Procedure................................1880

Overall Function Check.........................................1881

Wiring Diagram......................................................1882

Diagnostic Procedure ............................................1883

DTC P1464 FUEL LEVEL SENSOR CIRCUIT

(GROUND SIGNAL) ..................................................1888

Component Description .........................................1888

On Board Diagnostic Logic....................................1888

Possible Cause......................................................1888

DTC Confirmation Procedure................................1888

Wiring Diagram......................................................1889

Diagnostic Procedure ............................................1890

DTC P1490 VACUUM CUT VALVE BYPASS

VALVE (CIRCUIT)......................................................1891

Description.............................................................1891

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1891

On Board Diagnosis Logic.....................................1891

Possible Cause......................................................1892

DTC Confirmation Procedure................................1892

Wiring Diagram......................................................1893

Diagnostic Procedure ............................................1894

DTC P1491 VACUUM CUT VALVE BYPASS

VALVE........................................................................1897

Description.............................................................1897

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1897

On Board Diagnosis Logic.....................................1897

Possible Cause......................................................1898

DTC Confirmation Procedure................................1898

Overall Function Check.........................................1899

Wiring Diagram......................................................1900

Diagnostic Procedure ............................................1901

DTC P1605 A/T DIAGNOSIS COMMUNICATION

LINE ...........................................................................1909

System Description................................................1909

On Board Diagnosis Logic.....................................1909

DTC Confirmation Procedure................................1909

Wiring Diagram......................................................1910

Diagnostic Procedure ............................................1911

DTC P1706 PARK/NEUTRAL POSITION (PNP)

SWITCH .....................................................................1912

Component Description .........................................1912

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1912

On Board Diagnosis Logic.....................................1912

DTC Confirmation Procedure................................1912

Overall Function Check.........................................1913

Wiring Diagram......................................................1914

Diagnostic Procedure For M/T Models..................1915

Diagnostic Procedure For A/T Models ..................1916

INJECTOR .................................................................1917

Component Description .........................................1917

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1917

Wiring Diagram......................................................1918

Diagnostic Procedure ............................................1919

START SIGNAL.........................................................1922

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1922

Wiring Diagram......................................................1923

Diagnostic Procedure ............................................1924

FUEL PUMP...............................................................1926

System Description................................................1926

Component Description .........................................1926

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1926

Wiring Diagram......................................................1927

Diagnostic Procedure ............................................1928

Component Inspection...........................................1931

POWER STEERING OIL PRESSURE SWITCH.......1932

Component Description .........................................1932

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1932

Wiring Diagram......................................................1933

Diagnostic Procedure ............................................1934

Component Inspection...........................................1936

REFRIGERANT PRESSURE SENSOR....................1937

Description.............................................................1937

Wiring Diagram......................................................1938

Diagnostic Procedure ............................................1939

ELECTRICAL LOAD SIGNAL...................................1942

CONSULT-II Reference Value in Data Monitor

Mode......................................................................1942

Wiring Diagram......................................................1943

Diagnostic Procedure ............................................1945

MIL & DATA LINK CONNECTORS..........................1954

Wiring Diagram......................................................1954

SERVICE DATA AND SPECIFICATIONS (SDS).....1955

Fuel Pressure Regulator........................................1955

Idle Speed and Ignition Timing..............................1955

Ignition Coil............................................................1955

Mass Air Flow Sensor............................................1955

Engine Coolant Temperature Sensor....................1955

EGR Temperature Sensor .....................................1955

Fuel Pump .............................................................1955

IACV-AAC Valve....................................................1955

Injector...................................................................1956

Resistor..................................................................1956

Throttle Position Sensor........................................1956

Heated Oxygen Sensor 1 (Front) Heater..............1956

Calculated Load Value...........................................1956

Intake Air Temperature Sensor..............................1956

EVAP Canister Purge Volume Control Valve ........1956

EC-20

CONTENTS (Cont’d)

Heated Oxygen Sensor 2 (Rear) Heater...............1956

Crankshaft Position Sensor (POS)........................1956

Fuel Tank Temperature Sensor .............................1956

EC-21

IDX

Alphabetical & P No. Index for DTC

TROUBLE DIAGNOSIS — INDEX

QG18DE (EXC CALIF CA)

Alphabetical & P No. Index for DTC

ALPHABETICAL INDEX FOR DTC

Items

(CONSULT-II screen terms) Unable to access PCM — EC-146 ABSL PRES SEN/CIRC P0105 EC-185 AIR TEMP SEN/CIRC P0110 EC-190 A/T 1ST GR FNCTN P0731 AT-295 A/T 2ND GR FNCTN P0732 AT-302 A/T 3RD GR FNCTN P0733 AT-308 A/T 4TH GR FNCTN P0734 AT-314 A/T COMM LINE P0600*2 EC-472 A/T DIAG COMM LINE P1605 EC-657 A/T TCC S/V FNCTN P0744 AT-327 ATF TEMP SEN/CIRC P0710 AT-280 CMP SEN/CIRCUIT P0340 EC-363 CLOSED LOOP-B1 P1148 EC-523

DTC*1 Reference page

NIEC0001

NIEC0001S01

CLOSED LOOP-B2 P1168 EC-523 CLOSED TP SW/CIRC P0510 EC-464 COOLANT T SEN/CIRC*3 P0115 EC-196 *COOLAN T SEN/CIRC P0125 EC-213 CKP SEN (COG) P1336 EC-560 CKP SEN/CIRCUIT P0335 EC-358 CYL 1 MISFIRE P0301 EC-347 CYL 2 MISFIRE P0302 EC-347 CYL 3 MISFIRE P0303 EC-347 CYL 4 MISFIRE P0304 EC-347 ECM (PCM) P0605 EC-474 EGR SYSTEM P0400 EC-369 EGR SYSTEM P1402 EC-572 EGR TEMP SEN/CIRC P1401 EC-565 EGR VOL CONT/V CIR P0403 EC-378 ENGINE SPEED SIG P0725 AT-291 ENG OVER TEMP P0217 EC-329 ENG OVER TEMP P1217*2 EC-532 EVAP GROSS LEAK P0455 EC-428 EVAP PURG FLOW/MON P1447 EC-617 EVAP SYS PRES SEN P0450 EC-416 EVAP SMALL LEAK P0440 EC-389

EC-22

TROUBLE DIAGNOSIS — INDEX

Alphabetical & P No. Index for DTC (Cont’d)

QG18DE (EXC CALIF CA)

Items

(CONSULT-II screen terms) EVAP SMALL LEAK P1440 EC-580 EVAP VERY SML LEAK P1441 EC-582 HO2S1 HTR (B1) P0135 EC-259 HO2S1 (B1) P0130 EC-218 HO2S1 (B1) P0131 EC-227 HO2S1 (B1) P0132 EC-233 HO2S1 (B1) P0133 EC-240 HO2S1 (B1) P0134 EC-251 HO2S1 HTR (B2) P0155 EC-582 HO2S1 (B2) P0150 EC-218 HO2S1 (B2) P0151 EC-227 HO2S1 (B2) P0152 EC-233 HO2S1 (B2) P0153 EC-240 HO2S1 (B2) P0154 EC-251 FUEL LEVL SEN/CIRC P0464 EC-447 FUEL LEVL SEN/CIRC P1464 EC-638

DTC*1 Reference page

FUEL LEVEL SENSOR P0461 EC-445 FUEL LV SE (SLOSH) P0460 EC-441 FUEL SYS-LEAN/BK1 P0171 EC-306 FUEL SYS-RICH/BK1 P0172 EC-315 FUEL TEMP SEN/CIRC P0180 EC-324 IACV/AAC VLV/CIRC P0505 EC-455 IGN SIGNAL-PRIMARY P1320 EC-549 INT/V TIM CONT-B1 P1110 EC-476 INT/V TIM V/CIR-B1 P1111 EC-482 INTK TIM S/CIRC-B1 P1140 EC-518 KNOCK SEN/CIRC-B1 P0325*2 EC-354 L/PRES SOL/CIRC P0745 AT-338 MAF SEN/CIRCUIT*3 P0100 EC-176 MULTI CYL MISFIRE P0300 EC-347 NATS MALFUNCTION P1610 - P1615*2 EL-305

NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED.

O/R CLTCH SOL/CIRC P1760 AT-359

P0000 —

P-N POS SW/CIRCUIT P1706 EC-659 PNP SW/CIRC P0705 AT-275 PURG VOLUME CONT/V P0443 EC-403 PURG VOLUME CONT/V P1444 EC-597

EC-23

IDX

TROUBLE DIAGNOSIS — INDEX

Alphabetical & P No. Index for DTC (Cont’d)

QG18DE (EXC CALIF CA)

Items

(CONSULT-II screen terms) HO2S2 (B1) P0137 EC-265 HO2S2 (B1) P0138 EC-274 HO2S2 (B1) P0139 EC-283 HO2S2 (B1) P0140 EC-292 HO2S2 (B2) P0157 EC-265 HO2S2 (B2) P0158 EC-369 HO2S2 (B2) P0159 EC-283 HO2S2 (B2) P0160 EC-292 HO2S2 HTR (B1) P0141 EC-300 HO2S2 HTR (B2) P0161 EC-300 SFT SOL A/CIRC*3 P0750 AT-343 SFT SOL B/CIRC*3 P0755 AT-347 SWIRL CONT SOL/V P1130 EC-489 SWIRL CONT SOL/V P1131 EC-512 SWL CON VC SW/CIRC P1165 EC-525

DTC*1 Reference page

TCC SOLENOID/CIRC P0740 AT-323 THERMOSTAT FNCTN P1126 EC-487 TP SEN/CIRC A/T*3 P1705 AT-351 TRTL POS SEN/CIRC*3 P0120 EC-201 TW CATALYST SYS-B1 P0420 EC-385 TW CATALYST SYS-B2 P0430 EC-385 VC CUT/V BYPASS/V P1491 EC-647 VC/V BYPASS/V P1490 EC-641 VEH SPEED SEN/CIRC*4 P0500 EC-451 VEH SPD SEN/CIR A/T*4 P0720 AT-286 VENT CONTROL VALVE P0446 EC-409 VENT CONTROL VALVE P1446 EC-609 VENT CONTROL VALVE P1448 EC-629

*1: 1st trip DTC No. is the same as DTC No. *2: This DTC is displayed with CONSULT-II only. *3: When the fail-safe operation occurs, the MIL illuminates. *4: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at

the same time.

EC-24

TROUBLE DIAGNOSIS — INDEX

Alphabetical & P No. Index for DTC (Cont’d)

QG18DE (EXC CALIF CA)

P NO. INDEX FOR DTC

DTC*1

— Unable to access PCM EC-146

P0000

P0100 MAF SEN/CIRCUIT*3 EC-176 P0105 ABSL PRES SEN/CIRC EC-185

P0110 AIR TEMP SEN/CIRC EC-190

P0115 COOLANT T SEN/CIRC*3 EC-196 P0120 THRTL POS SEN/CIRC*3 EC-201 P0125 *COOLAN T SEN/CIRC EC-213 P0130 HO2S1 (B1) EC-218 P0131 HO2S1 (B1) EC-227 P0132 HO2S1 (B1) EC-233 P0133 HO2S1 (B1) EC-240 P0134 HO2S1 (B1) EC-251 P0135 HO2S1 HTR (B1) EC-259 P0137 HO2S2 (B1) EC-265

Items

(CONSULT-II screen terms)

NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED.

Reference page

—

=NIEC0001S02

P0138 HO2S2 (B1) EC-274 P0139 HO2S2 (B1) EC-283 P0140 HO2S2 (B1) EC-292 P0141 HO2S2 HTR (B1) EC-300 P0150 HO2S1 (B2) EC-218 P0151 HO2S1 (B2) EC-227 P0152 HO2S1 (B2) EC-233 P0153 HO2S1 (B2) EC-240 P0154 HO2S1 (B2) EC-251 P0155 HO2S1 HTR (B2) EC-259 P0157 HO2S2 (B2) EC-265 P0158 HO2S2 (B2) EC-274 P0159 HO2S2 (B2) EC-283 P0160 HO2S2 (B2) EC-292 P0161 HO2S2 HTR (B2) EC-300 P0171 FUEL SYS-LEAN/BK1 EC-306 P0174 FUEL SYS-LEAN/BK2 EC-306

P0172 FUEL SYS-RICH/BK1 EC-315 P0175 FUEL SYS-RICH/BK2 EC-315 P0180 FUEL TEMP SEN/CIRC EC-324 P0217 ENG OVER TEMP EC-329

EC-25

IDX

TROUBLE DIAGNOSIS — INDEX

Alphabetical & P No. Index for DTC (Cont’d)

QG18DE (EXC CALIF CA)

DTC*1

P0300 MULTI CYL MISFIRE EC-347 P0301 CYL 1 MISFIRE EC-347 P0302 CYL 2 MISFIRE EC-347 P0303 CYL 3 MISFIRE EC-347 P0304 CYL 4 MISFIRE EC-347

P0325*2 KNOCK SEN/CIRC-B1 EC-354

P0335 CKP SEN/CIRCUIT EC-358 P0340 CMP SEN/CIRCUIT EC-363 P0400 EGR SYSTEM EC-369 P0403 EGR VOL CONT/V CIR EC-378 P0420 TW CATALYST SYS-B1 EC-385 P0430 TW CATALYST SYS-B2 EC-385 P0440 EVAP SMALL LEAK EC-389 P0443 PURG VOLUME CONT/V EC-403 P0446 VENT CONTROL VALVE EC-409

(CONSULT-II screen terms)

Items

Reference page

P0450 EVAP SYS PRES SEN EC-416 P0455 EVAP GROSS LEAK EC-428 P0460 FUEL LV SE (SLOSH) EC-441 P0461 FUEL LEVEL SENSOR EC-445 P0464 FUEL LEVL SEN/CIRC EC-447 P0500 VEH SPEED SEN/CIRC*4 EC-451 P0505 IACV/AAC VLV/CIRC EC-455 P0510 CLOSED TP SW/CIRC EC-464

P0600*2 A/T COMM LINE EC-472

P0605 ECM (PCM) EC-474 P0705 PNP SW/CIRC AT-275 P0710 ATF TEMP SEN/CIRC AT-280 P0720 VEH SPD SEN/CIR A/T*4 AT-286 P0725 ENGINE SPEED SIG AT-291 P0731 A/T 1ST GR FNCTN AT-295 P0732 A/T 2ND GR FNCTN AT-302 P0733 A/T 3RD GR FNCTN AT-308 P0734 A/T 4TH GR FNCTN AT-314 P0740 TCC SOLENOID/CIRC AT-323 P0744 A/T TCC S/V FNCTN AT-327 P0745 L/PRESS SOL/CIRC AT-338 P0750 SFT SOL A/CIRC*3 AT-343

EC-26

TROUBLE DIAGNOSIS — INDEX

Alphabetical & P No. Index for DTC (Cont’d)

QG18DE (EXC CALIF CA)

DTC*1

P0755 SFT SOL B/CIRC*3 AT-347

P1110 INT/V TIM CONT-B1 EC-476

P1111 INT/V TIM V/CIR-B1 EC-482

P1126 THERMOSTAT FNCTN EC-487

P1130 SWIRL CONT S/V EC-489

P1131 SWIRL CONT SOL/V EC-512

P1140 INTK TIM S/CIRC-B1 EC-518

P1148 CLOSED LOOP-B1 EC-523

P1165 SWIRL CON VC SW/CIRC EC-525

P1168 CLOSED LOOP-B2 EC-523

P1217*2 ENG OVER TEMP EC-532

P1320 IGN SIGNAL-PRIMARY EC-549 P1336 CKP SEN (COG) EC-560 P1401 EGR TEMP SEN/CIRC EC-565 P1402 EGR SYSTEM EC-572 P1440 EVAP SMALL LEAK EC-580

(CONSULT-II screen terms)

Items

Reference page

P1441 EVAP VERY SML LEAK EC-582 P1444 PURG VOLUME CONT/V EC-597 P1446 VENT CONTROL VALVE EC-609 P1447 EVAP PURG FLOW/MON EC-617 P1448 VENT CONTROL VALVE EC-629 P1464 FUEL LEVEL SEN/CIRC EC-638 P1490 VC/V BYPASS/V EC-641 P1491 VC CUT/V BYPASS/V EC-647 P1605 A/T DIAG COMM LINE EC-657

P1610 - P1615*2 NATS MALFUNCTION EL-305

P1705 TP SEN/CIRC A/T*3 AT-351 P1706 P-N POS SW/CIRCUIT EC-659 P1760 O/R CLTCH SOL/CIRC AT-359

the same time.

EC-27

IDX

PRECAUTIONS

Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”

QG18DE (EXC CALIF CA)

Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. The SRS system composition which is available to NISSAN MODEL B15 is as follows:

쐌 For a frontal collision

The Supplemental Restraint System consists of driver air bag module (located in the center of the steering wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.

쐌 For a side collision

The Supplemental Restraint System consists of front side air bag module (located in the outer side of front seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).

Information necessary to service the system safely is included in the RS section of this Service Manual.

WARNING:

쐌 To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death

in the event of a collision which would result in air bag inflation, all maintenance should be performed by an authorized NISSAN dealer.

쐌 Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-

sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the RS section.

쐌 Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just before the harness connectors or for the complete harness are related to the SRS.

NIEC0002

Precautions for On Board Diagnostic (OBD) System of Engine and A/T

The PCM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the driver of a malfunction causing emission deterioration.

CAUTION:

쐌 Be sure to turn the ignition switch “OFF” and disconnect the negative battery terminal before any

repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will cause the MIL to light up.

쐌 Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will

cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease, dirt, bent terminals, etc.)

쐌 Certain systems and components, especially those related to OBD, may use a new style slide-

locking type harness connector. For description and how to disconnect, refer to EL section, “Description”, “HARNESS CONNECTOR”.

쐌 Be sure to route and secure the harnesses properly after work. The interference of the harness with

a bracket, etc. may cause the MIL to light up due to the short circuit.

쐌 Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube

may cause the MIL to light up due to the malfunction of the EGR system or fuel injection system, etc.

쐌 Be sure to erase the unnecessary malfunction information (repairs completed) from the PCM (self-

diagnostic results of engine and the A/T) before returning the vehicle to the customer.

NIEC0003

EC-28

PRECAUTIONS

QG18DE (EXC CALIF CA)

Precautions

SEF706Y

SEF707Y

Precautions

쐌 Always use a 12 volt battery as power source. 쐌 Do not attempt to disconnect battery cables while engine

is running.

쐌 Before connecting or disconnecting the PCM harness

connector, turn ignition switch OFF and disconnect negative battery terminal. Failure to do so may damage the PCM because battery voltage is applied to PCM even if ignition switch is turned off.

쐌 Before removing parts, turn off ignition switch and then

disconnect battery ground cable.

쐌 Do not disassemble PCM. 쐌 If a battery terminal is disconnected, the memory will

return to the PCM value. The PCM will now start to self-control at its initial value. Engine operation can vary slightly when the terminal is disconnected. However, this is not an indication of a problem. Do not replace parts because of a slight variation.

쐌 When connecting PCM harness connector, fasten it

securely with a lever as far as it will go, as shown at left.

NIEC0005

SEF908W

SEF291H

쐌 When connecting or disconnecting pin connectors into or

from PCM, take care not to damage pin terminals (bend or break). Make sure that there are not any bends or breaks on PCM pin terminals when connecting pin connectors.

쐌 Securely connect PCM harness connectors.

A Poor connection can cause an extremely high (surge) voltage to develop in coil and condenser, thus resulting in damage to ICs.

쐌 Keep PCM harness at least 10 cm (4 in) away from adja-

cent harness, to prevent a PCM system malfunctions due to receiving external noise, degraded operation of ICs, etc.

쐌 Keep PCM parts and harness dry.

EC-29

IDX

Precautions (Cont’d)

SEF704Y

PRECAUTIONS

QG18DE (EXC CALIF CA)

쐌 Before replacing PCM, perform Terminals and Reference

Value inspection and make sure PCM functions properly. Refer to EC-156.

쐌 After performing each TROUBLE DIAGNOSIS, perform

“Overall Function Check” or “DTC Confirmation Procedure”. The DTC should not be displayed in the “DTC Confirmation Procedure” if the repair is completed. The “Overall Function Check” should be a good result if the repair is completed.

SEF217U

SEF348NA

쐌 When measuring PCM signals with a circuit tester, never

allow the two tester probes to contact. Accidental contact of probes will cause a short circuit and damage the PCM power transistor.

쐌 Handle mass air flow sensor carefully to avoid damage. 쐌 Do not disassemble mass air flow sensor. 쐌 Do not clean mass air flow sensor with any type of deter-

gent.

쐌 Do not disassemble IAC valve-AAC valve. 쐌 Even a slight leak in the air intake system can cause seri-

ous problems.

쐌 Do not shock or jar the camshaft position sensor

(PHASE).

쐌 Do not operate fuel pump when there is no fuel in lines. 쐌 Tighten fuel hose clamps to the specified torque.

SEF605X

EC-30

PRECAUTIONS

쐌 Do not depress accelerator pedal when starting. 쐌 Immediately after starting, do not rev up engine unneces-

sarily.

쐌 Do not rev up engine just prior to shutdown.

QG18DE (EXC CALIF CA)

Precautions (Cont’d)

SEF709Y

SEF708Y

쐌 When installing C.B., ham radio or a mobile phone, be

sure to observe the following as it may adversely affect electronic control systems depending on installation location.

a) Keep the antenna as far as possible from the electronic

control units.

b) Keep the antenna feeder line more than 20 cm (8 in) away

from the harness of electronic controls. Do not let them run parallel for a long distance.

c) Adjust the antenna and feeder line so that the standing-

wave ratio can be kept smaller.

d) Be sure to ground the radio to vehicle body.

SEF440Y

쐌 Regarding model B15, “-B1” indicates cylinders number 1

and 4 and “-B2” indicates cylinders number 2 and 3.

Wiring Diagrams and Trouble Diagnosis

When you read Wiring diagrams, refer to the following:

쐌 GI-11, “HOW TO READ WIRING DIAGRAMS” 쐌 EL-9, “POWER SUPPLY ROUTING” for power distribution cir-

cuit

When you perform trouble diagnosis, refer to the following:

쐌 GI-36, “How to Follow Test Group in Trouble Diagnosis” 쐌 GI-25,“HOW TO PERFORM EFFICIENTDIAGNOSIS FORAN

ELECTRICAL INCIDENT”

NIEC0006

EC-31

IDX

Special Service Tools

PREPARATION

QG18DE (EXC CALIF CA)

Special Service Tools

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name

KV10117100 (J36471-A) Heated oxygen sensor wrench

KV10114400 (J-38365) Heated oxygen sensor wrench

(J-44321) Fuel pressure gauge kit

Description

Loosening or tightening front heated oxygen sensor with 22 mm (0.87 in) hexagon nut

NT379

Loosening or tightening rear heated oxygen sensor

a: 22 mm (0.87 in)

NT636

Checking fuel pressure

NIEC0007

LEC642

Tool name Description Fuel filler cap adapter

(MLR-8382)

NT815

Leak detector (J41416)

Commercial Service Tools

Checking fuel tank vacuum relief valve opening pressure

Locating the EVAP leak

NIEC0008

NT703

EC-32

Tool name Description

PREPARATION

QG18DE (EXC CALIF CA)

Commercial Service Tools (Cont’d)

Oxygen sensor thread cleaner (J-43897-18) (J-43897-12)

Anti-seize lubricant (Permatex equivalent meeting MIL specification MIL-A-907)

133AR or

NT778

NT779

Reconditioning the exhaust system threads before installing a new oxygen sensor. Use with antiseize lubricant shown below.

a: J-43897-18 18 mm with 1.5 mm pitch dia., for Zirconia Oxygen Sensor b: J-43897-12 12 mm with 1.25 mm pitch dia., for Titania Oxygen Sensor

Lubricating oxygen sensor thread cleaning tool when reconditioning exhaust system threads.

EC-33

IDX

ENGINE AND EMISSION CONTROL

Engine Control Component Parts Location

OVERALL SYSTEM

QG18DE (EXC CALIF CA)

Engine Control Component Parts Location

NIEC0009

EC-34

LEC235

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

Engine Control Component Parts Location (Cont’d)

QG18DE (EXC CALIF CA)

EC-35

IDX

WEC828

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

Engine Control Component Parts Location (Cont’d)

QG18DE (EXC CALIF CA)

EC-36

LEC237

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

Engine Control Component Parts Location (Cont’d)

QG18DE (EXC CALIF CA)

EC-37

IDX

LEC238

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

Engine Control Component Parts Location (Cont’d)

QG18DE (EXC CALIF CA)

EC-38

LEC239

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

QG18DE (EXC CALIF CA)

Circuit Diagram

NIEC0010

EC-39

IDX

WEC829

Circuit Diagram (Cont’d)

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

QG18DE (EXC CALIF CA)

EC-40

WEC380

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

QG18DE (EXC CALIF CA)

System Diagram

FOR CALIFORNIA MODELS

System Diagram

NIEC0011

NIEC0011S01

EC-41

IDX

SEF441Y

System Diagram (Cont’d)

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

QG18DE (EXC CALIF CA)

EXCEPT FOR CALIFORNIA MODELS

NIEC0011S02

EC-42

SEF442Y

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

QG18DE (EXC CALIF CA)

Vacuum Hose Drawing

Refer to “System Diagram” on EC-41 or EC-42 for vacuum control system.

NIEC0012

EC-43

IDX

SEF443Y

System Chart

ENGINE AND EMISSION CONTROL

OVERALL SYSTEM

QG18DE (EXC CALIF CA)

Input (Sensor) PCM Function Output (Actuator)

쐌 Camshaft position sensor (PHASE) 쐌 Crankshaft position sensor (POS) 쐌 Mass air flow sensor 쐌 Engine coolant temperature sensor 쐌 Heated oxygen sensor 1 (front) 쐌 Ignition switch 쐌 Throttle position sensor 쐌 PNP switch 쐌 Air conditioner switch 쐌 Knock sensor 쐌 EGR temperature sensor*1 쐌 EVAP control system pressure sensor*1 쐌 Fuel tank temperature sensor*1 쐌 Battery voltage 쐌 Power steering oil pressure switch 쐌 Vehicle speed sensor 쐌 Intake air temperature sensor 쐌 Absolute pressure sensor 쐌 Heated oxygen sensor 2 (rear) 쐌 TCM (Transmission control module)*2 쐌 Closed throttle position switch*4 쐌 Electrical load 쐌 Intake valve timing control position sensor*1 쐌 Swirl control vacuum check switch*1 쐌 Fuel level sensor*1 쐌 Refrigerant pressure sensor

System Chart

Fuel injection & mixture ratio control Injectors Distributor ignition system Power transistor Idle air control system IACV-AAC valve

Intake valve timing control

Fuel pump control Fuel pump relay

On board diagnostic system

EGR control EGR volume control valve

Swirl control valve control

Heated oxygen sensor 1 and 2 heater control

EVAP canister purge flow control

Cooling fan control Cooling fan relays Air conditioning cut control Air conditioner relay

ON BOARD DIAGNOSIS for EVAP system

Intake valve timing control solenoid valve

Malfunction indicator lamp (On the instrument panel)

Swirl control valve control solenoid valve

Heated oxygen sensor heater

EVAP canister purge volume control solenoid valve

쐌 EVAP canister vent control

valve

쐌 Vacuum cut valve bypass valve

NIEC0013

*1: These sensors are not used to control the engine system. They are used only for the on board diagnosis. *2: The DTC related to A/T will be sent to PCM. *3: Under normal conditions, this sensor is not for engine control operation. *4: This switch will operate in place of the throttle position sensor to control EVAP parts if the sensor malfunctions.

EC-44

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Multiport Fuel Injection (MFI) System

DESCRIPTION Input/Output Signal Chart

Sensor Input Signal to PCM

Camshaft position sensor (PHASE) Engine speed and piston number Crankshaft position sensor (POS) Engine speed

QG18DE (EXC CALIF CA)

Multiport Fuel Injection (MFI) System

PCM func-

tion

Actuator

NIEC0014

NIEC0014S01

Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Heated oxygen sensor 1 (front) Density of oxygen in exhaust gas

Throttle position sensor

PNP switch Gear position Vehicle speed sensor Vehicle speed Ignition switch Start signal Air conditioner switch Air conditioner operation Knock sensor Engine knocking condition Electrical load Electrical load signal Battery Battery voltage Power steering oil pressure switch Power steering operation Heated oxygen sensor 2 (rear)* Density of oxygen in exhaust gas Absolute pressure sensor Ambient air barometric pressure

* Under normal conditions, this sensor is not for engine control operation.

Basic Multiport Fuel Injection System

Throttle position Throttle valve idle position

Fuel injection & mixture ratio control

Injector

NIEC0014S02

The amount of fuel injected from the fuel injector is determined by the PCM. The PCM controls the length of time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the PCM memory. The program value is preset by engine operating conditions. These conditions are determined by input signals (for engine speed and intake air) from both the camshaft position sensor and the mass air flow sensor.

Various Fuel Injection Increase/Decrease Compensation

NIEC0014S03

In addition, the amount of fuel injected is compensated to improve engine performance under various operating conditions as listed below. <Fuel increase>

쐌 During warm-up 쐌 When starting the engine 쐌 During acceleration 쐌 Hot-engine operation 쐌 When selector lever is changed from “N” to “D” (A/T models only) 쐌 High-load, high-speed operation

쐌 During deceleration 쐌 During high engine speed operation 쐌 During high vehicle speed operation 쐌 Extremely high engine coolant temperature

IDX

EC-45

ENGINE AND EMISSION BASIC CONTROL

Multiport Fuel Injection (MFI) System (Cont’d)

SYSTEM DESCRIPTION

QG18DE (EXC CALIF CA)

Mixture Ratio Feedback Control (Closed loop control)

NIEC0014S04

SEF503YA

The mixture ratio feedback system provides the best air-fuel mixture ratio for driveability and emission control. The three way catalyst can then better reduce CO, HC and NOx emissions. This system uses a heated oxygen sensor 1 (front) in the exhaust manifold to monitor if the engine operation is rich or lean. The PCM adjusts the injection pulse width according to the sensor voltage signal. For more information about the heated oxygen sensor 1 (front), refer to EC-218. This maintains the mixture ratio within the range of stoichiometric (ideal air-fuel mixture). This stage is referred to as the closed loop control condition. Heated oxygen sensor 2 (rear) is located downstream of the three way catalyst. Even if the switching characteristics of the heated oxygen sensor 1 (front) shift, the air-fuel ratio is controlled to stoichiometric by the signal from the heated oxygen sensor 2 (rear).

Open Loop Control

NIEC0014S05

The open loop system condition refers to when the PCM detects any of the following conditions. Feedback control stops in order to maintain stabilized fuel combustion.

쐌 Deceleration and acceleration 쐌 High-load, high-speed operation 쐌 Malfunction of heated oxygen sensor 1 (front) or its circuit 쐌 Insufficient activation of heated oxygen sensor 1 (front) at low engine coolant temperature 쐌 High engine coolant temperature 쐌 During warm-up 쐌 When starting the engine

Mixture Ratio Self-learning Control

NIEC0014S06

The mixture ratio feedback control system monitors the mixture ratio signal transmitted from the heated oxygen sensor 1 (front). This feedback signal is then sent to the PCM. The PCM controls the basic mixture ratio as close to the theoretical mixture ratio as possible. However, the basic mixture ratio is not necessarily controlled as originally designed. Both manufacturing differences (i.e., mass air flow sensor hot film) and characteristic changes during operation (i.e., injector clogging) directly affect mixture ratio. Accordingly, the difference between the basic and theoretical mixture ratios is monitored in this system. This is then computed in terms of “injection pulse duration” to automatically compensate for the difference between the two ratios. “Fuel trim” refers to the feedback compensation value compared against the basic injection duration. Fuel trim includes short term fuel trim and long term fuel trim. “Short term fuel trim” is the short-term fuel compensation used to maintain the mixture ratio at its theoretical value. The signal from the heated oxygen sensor 1 (front) indicates whether the mixture ratio is RICH or LEAN compared to the theoretical value. The signal then triggers a reduction in fuel volume if the mixture ratio is rich, and an increase in fuel volume if it is lean. “Long term fuel trim” is overall fuel compensation carried out long-term to compensate for continual deviation of the short term fuel trim from the central value. Such deviation will occur due to individual engine differences, wear over time and changes in the usage environment.

EC-46

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Multiport Fuel Injection (MFI) System (Cont’d)

QG18DE (EXC CALIF CA)

Fuel Injection Timing

NIEC0014S07

SEF337W

Two types of systems are used.

Sequential Multiport Fuel Injection System

NIEC0014S0701

Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used when the engine is running.

Simultaneous Multiport Fuel Injection System

NIEC0014S0702

Fuel is injected simultaneously into all four cylinders twice each engine cycle. In other words, pulse signals of the same width are simultaneously transmitted from the PCM. The four injectors will then receive the signals two times for each engine cycle. This system is used when the engine is being started and/or if the fail-safe system (CPU) is operating.

Fuel Shut-off

NIEC0014S08

Fuel to each cylinder is cut off during deceleration or operation of the engine at excessively high speeds.

Distributor Ignition (DI) System

DESCRIPTION Input/Output Signal Chart

Sensor Input Signal to PCM

PCM func-

tion

Actuator

NIEC0015

NIEC0015S01

Camshaft position sensor (PHASE) Engine speed and piston number Crankshaft position sensor (POS) Engine speed Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature

Throttle position sensor

Vehicle speed sensor Vehicle speed Ignition switch Start signal Knock sensor Engine knocking PNP switch Gear position Battery Battery voltage

Throttle position Throttle valve idle position

Ignition timing control

Power transistor

IDX

EC-47

ENGINE AND EMISSION BASIC CONTROL

Distributor Ignition (DI) System (Cont’d)

SYSTEM DESCRIPTION

QG18DE (EXC CALIF CA)

System Description

SEF742M

NIEC0015S02

The ignition timing is controlled by the PCM to maintain the best air-fuel ratio for every running condition of the engine. The ignition timing data is stored in the PCM. This data forms the map shown above. The PCM receives information such as the injection pulse width and camshaft position sensor (PHASE) signal. Computing this information, ignition signals are transmitted to the power transistor. e.g., N: 1,800 rpm, Tp: 1.50 msec

A°BTDC During the following conditions, the ignition timing is revised by the PCM according to the other data stored in the PCM.

쐌 At starting 쐌 During warm-up 쐌 At idle 쐌 At low battery voltage 쐌 During acceleration

The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition. The signal is transmitted to the PCM. The PCM retards the ignition timing to eliminate the knocking condition.

Air Conditioning Cut Control

DESCRIPTION Input/Output Signal Chart

Sensor Input Signal to PCM

Air conditioner switch Air conditioner “ON” signal PNP switch Neutral position Throttle position sensor Throttle valve opening angle Camshaft position sensor (PHASE) Engine speed Engine coolant temperature sensor Engine coolant temperature Ignition switch Start signal Refrigerant pressure sensor Refrigerant pressure

System Description

This system improves engine operation when the air conditioner is used. Under the following conditions, the air conditioner is turned off.

쐌 When the accelerator pedal is fully depressed. 쐌 When cranking the engine. 쐌 At high engine speeds. 쐌 When the engine coolant temperature becomes excessively high.

PCM func-

Air conditioner cut control

tion

NIEC0016

NIEC0016S01

Actuator

Air conditioner relay

NIEC0016S02

EC-48

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Fuel Cut Control (at no load & high engine speed)

쐌 When operating power steering during low engine speed or low vehicle speed. 쐌 When engine speed is excessively low. 쐌 When the refrigerant pressure is excessively high or low.

QG18DE (EXC CALIF CA)

Fuel Cut Control (at no load & high engine speed)

DESCRIPTION Input/Output Signal Chart

Sensor Input Signal to PCM

Vehicle speed sensor Vehicle speed PNP switch Neutral position

PCM func-

tion

Actuator

NIEC0017

NIEC0017S01

Throttle position sensor Throttle position Engine coolant temperature sensor Engine coolant temperature Crankshaft position sensor (POS) Engine speed Camshaft position sensor (PHASE) Engine speed and piston number

If the engine speed is above 2,500 rpm with no load, (for example, in Neutral and engine speed over 2,500 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed. Fuel cut will operate until the engine speed reaches 2,000 rpm, then fuel cut is cancelled.

NOTE: This function is different from deceleration control listed under “Multiport Fuel Injection (MFI) System”, EC-45.

Fuel cut control

Injectors

Evaporative Emission System

DESCRIPTION

NIEC0018

SEF444Y

The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister. The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the vapor is stored there when the engine is not operating or when refueling to the fuel tank. The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the engine is operating. EVAP canister purge volume control solenoid valve is controlled by PCM. When the engine operates, the flow

EC-49

IDX

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Evaporative Emission System (Cont’d)

rate of vapor controlled by EVAP canister purge volume control solenoid valve is proportionally regulated as the air flow increases. EVAP canister purge control solenoid valve also shuts off the vapor purge line during decelerating and idling.

QG18DE (EXC CALIF CA)

SEF428T

AEC778A

SEF445Y

INSPECTION EVAP Canister

NIEC0019

NIEC0019S01

Check EVAP canister as follows:

1. Pinch the fresh air hose.

2. Blow air into port A and check that air flows freely through port

Tightening Torque

NIEC0019S02

Tighten EVAP canister as shown in the figure.

Make sure new O-ring is installed properly between EVAPcanister and EVAP canister vent control valve.

Fuel Tank Vacuum Relief Valve (Built into fuel filler cap)

NIEC0019S03

NOTE:

Refer to fuel filler cap adapter instruction manual before performing following inspection.

1. Wipe clean valve housing.

2. Check valve opening pressure and vacuum.

Pressure:

15.3 - 20.0 kPa (0.156 - 0.204 kg/cm

, 2.22 - 2.90 psi)

Vacuum:

−6.0 to −3.4 kPa (−0.061 to −0.035 kg/cm

, −0.87 to

−0.48 psi)

3. If out of specification, replace fuel filler cap as an assembly.

CAUTION:

Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.

SEF943S

EC-50

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

QG18DE (EXC CALIF CA)

Evaporative Emission System (Cont’d)

SEF462UC

Vacuum Cut Valve and Vacuum Cut Valve Bypass Valve

Refer to EC-647.

NIEC0019S05

Evaporative Emission (EVAP) Canister Purge Volume Control Solenoid Valve

Refer to EC-403.

Fuel Tank Temperature Sensor

Refer to EC-324.

EVAP Service Port

Positive pressure is delivered to the EVAP system through the EVAP service port. If fuel vapor leakage in the EVAP system occurs, use a leak detector to locate the leak.

NIEC0019S06

NIEC0019S08

NIEC0019S09

EC-51

IDX

ENGINE AND EMISSION BASIC CONTROL

Evaporative Emission System (Cont’d)

SYSTEM DESCRIPTION

QG18DE (EXC CALIF CA)

PEF838U

PEF917U

SEF200U

How to Detect Fuel Vapor Leakage

NIEC0019S10

CAUTION:

쐌 Never use compressed air or a high pressure pump. 쐌 Do not start engine. 쐌 Do not exceed 4.12 kPa (0.042 kg/cm

, 0.6 psi) of pressure

in EVAP system.

NOTE: Improper installation of adapter to the service port may cause a leak.

With CONSULT-II

1) Attach the EVAP service port adapter securely to the EVAP service port.

2) Also attach the pressure pump and hose.

3) Turn ignition switch “ON”.

4) Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT MODE” with CONSULT-II.

5) Touch “START”. A bar graph (Pressure indicating display) will appear on the screen.

6) Apply positive pressure to the EVAP system until the pressure indicator reaches the middle of the bar graph.

7) Remove the EVAP service port adapter and hose with pressure pump.

8) Locate the leak using a leak detector.Refer to “EVAPORATIVE EMISSION LINE DRAWING”, EC-53.

Without CONSULT-II

1) Attach the EVAP service port adapter securely to the EVAP service port and pressure pump with pressure gauge to the EVAP service port.

2) Apply battery voltage to between the terminals of both EVAP canister vent control valve and vacuum cut valve bypass valve to make a closed EVAP system.

3) To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm

, 0.2 to 0.4 psi).

4) Remove the EVAP service port adapter and hose with pressure pump.

5) Locate the leak using a leak detector.Refer to “EVAPORATIVE EMISSION LINE DRAWING”, EC-53.

SEF865Y

EC-52

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

QG18DE (EXC CALIF CA)

Evaporative Emission System (Cont’d)

EVAPORATIVE EMISSION LINE DRAWING

NIEC0020

EC-53

IDX

SEF446Y

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Evaporative Emission System (Cont’d)

NOTE: Do not use soapy water or any type of solvent while installing vacuum hoses or purge hoses.

QG18DE (EXC CALIF CA)

EC-54

WEC362

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

QG18DE (EXC CALIF CA)

Evaporative Emission System (Cont’d)

ON BOARD REFUELING VAPOR RECOVERY (ORVR) System Description

From the beginning of refueling, the fuel tank pressure goes up. When the pressure reaches the setting value of the refueling control valve (RCV) opening pressure, the RCV is opened.After RCV opens, the air and vapor inside the fuel tank go through refueling EVAP vapor cut valve, RCV and refueling vapor line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere. When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged during driving. The RCV is always closed during driving and the evaporative emission control system is operated the same as conventional system.

WARNING:

When conducting inspections below, be sure to observe the following:

쐌 Put a “CAUTION: INFLAMMABLE” sign in workshop. 쐌 Do not smoke while servicing fuel system. Keep open flames and sparks away from work area. 쐌 Be sure to furnish the workshop with a CO

CAUTION:

쐌 Before removing fuel line parts, carry out the following procedures: a) Put drained fuel in an explosion-proof container and put lid on securely. b) Release fuel pressure from fuel line. Refer to “Fuel Pressure Release”, EC-67. c) Disconnect battery ground cable.

쐌 Always replace O-ring when the fuel gauge retainer is removed. 쐌 Do not kink or twist hose and tube when they are installed. 쐌 Do not tighten hose and clamps excessively to avoid damaging hoses. 쐌 After installation, run engine and check for fuel leaks at connection. 쐌 Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.

Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.

fire extinguisher.

NIEC0502

NIEC0502S01

SEF206VA

EC-55

IDX

ENGINE AND EMISSION BASIC CONTROL

Evaporative Emission System (Cont’d)

SYSTEM DESCRIPTION

QG18DE (EXC CALIF CA)

Diagnostic Procedure

Symptom: Fuel Odor from EVAP Canister Is Strong.

1 CHECK EVAP CANISTER

1. Remove EVAP canister with EVAP canister vent control valve attached.

2. Weigh the EVAP canister with EVAP canister vent control valve attached. The weight should be less than 1.8 kg (4.0 lb).

OK or NG

OK 䊳 GO TO 2. NG 䊳 GO TO 3.

2 CHECK IF EVAP CANISTER SATURATED WITH WATER

Does water drain from the EVAP canister?

NIEC0502S02

NIEC0502S0201

Yes 䊳 GO TO 3. No (With CONSULT-II) 䊳 GO TO 6. No (Without CONSULT-

II)

䊳 GO TO 7.

3 REPLACE EVAP CANISTER

Replace EVAP canister with a new one.

䊳 GO TO 4.

SEF596U

YesorNo

EC-56

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Evaporative Emission System (Cont’d)

4 CHECK WATER SEPARATOR

1. Check visually for insect nests in the water separator air inlet.

2. Check visually for cracks or flaws in the appearance.

3. Check visually for cracks or flaws in the hose.

4. Check that A and C are not clogged by blowing air into B with A, and then C plugged.

QG18DE (EXC CALIF CA)

5. In case of NG in items2-4,replace the parts.

NOTE:

쐌 Do not disassemble water separator.

OK or NG

OK 䊳 GO TO 5. NG 䊳 Replace water separator.

5 DETECT MALFUNCTIONING PART

Check the EVAP hose between EVAP canister and water separator for clogging or poor connection.

䊳 Repair or replace EVAP hose.

SEF829T

EC-57

IDX

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Evaporative Emission System (Cont’d)

6 CHECK REFUELING EVAP VAPOR CUT VALVE

With CONSULT-II

1. Remove fuel tank. Refer to FE-6, “FUEL SYSTEM.

2. Drain fuel from the tank as follows:

a. Remove fuel feed hose located on the fuel level sensor unit retainer. b. Connect a spare fuel hose, one side to fuel level sensor unit retainer where the hose was removed and the other side

to a fuel container.

c. Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II.

3. Check refueling EVAP vapor cut valve for being stuck to close as follows. Blow air into the refueling EVAP vapor cut valve (from hose end B), and check that the air flows freely into the tank.

4. Check EVAP vapor cut valve for being stuck to open as follows.

a. Connect vacuum pump to hose ends A and B using a suitable 3-way connector. b. Remove fuel gauge retainer with fuel level sensor unit.

Always replace O-ring with new one.

c. Put fuel tank upside down. d. Apply vacuum pressure to both hose ends A and B [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel level sensor unit

retainer remaining open and check that the pressure is applicable.

QG18DE (EXC CALIF CA)

OK or NG

OK 䊳 GO TO 8. NG 䊳 Replace refueling EVAP vapor cut valve with fuel tank.

EC-58

SEF246Y

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

7 CHECK REFUELING EVAP VAPOR CUT VALVE

Without CONSULT-II

1. Remove fuel tank. Refer to FE-6, “FUEL SYSTEM”.

2. Drain fuel from the tank as follows:

a. Remove fuel level sensor unit retainer. b. Drain fuel from the tank using a hand pump into a fuel container.

3. Check refueling EVAP vapor cut valve for being stuck to close as follows. Blow air into the refueling EVAP vapor cut valve (from hose end B), and check that the air flows freely into the tank.

4. Check EVAP vapor cut valve for being stuck to open as follows.

a. Connect vacuum pump to hose ends A and B using a suitable 3-way connector. b. Remove fuel level sensor unit retainer with fuel level sensor unit.

Always replace O-ring with new one.

c. Put fuel tank upside down. d. Apply vacuum pressure to both hose ends A and B [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel level sensor unit

retainer remaining open and check that the pressure is applicable.

QG18DE (EXC CALIF CA)

Evaporative Emission System (Cont’d)

OK or NG

OK 䊳 GO TO 8. NG 䊳 Replace refueling EVAP vapor cut valve with fuel tank.

SEF246Y

EC-59

IDX

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Evaporative Emission System (Cont’d)

8 CHECK REFUELING CONTROL VALVE

1. Remove fuel filler cap.

2. Check air continuity between hose ends A and B. Blow air into the hose end B. Air should flow freely into the fuel tank.

3. Blow air into hose end A and check there is no leakage.

4. Apply pressure to both hose ends A and B [20 kPa (150 mmHg, 5.91 inHg)] using a pressure pump and a suitable 3-way connector. Check that there is no leakage.

QG18DE (EXC CALIF CA)

OK or NG

OK 䊳 INSPECTION END NG 䊳 Replace refueling control valve with fuel tank.

Symptom: Cannot Refuel/Fuel Odor From The Fuel Filler Opening Is Strong While Refueling.

1 CHECK EVAP CANISTER

1. Remove EVAP canister with EVAP canister vent control valve attached.

2. Weigh the EVAP canister with EVAP canister vent control valve attached. The weight should be less than 1.8 kg (4.0 lb).

OK or NG

OK 䊳 GO TO 2. NG 䊳 GO TO 3.

SEF246Y

NIEC0502S0202

EC-60

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

2 CHECK IF EVAP CANISTER SATURATED WITH WATER

Does water drain from the EVAP canister?

YesorNo

Yes 䊳 GO TO 3. No 䊳 GO TO 6.

3 REPLACE EVAP CANISTER

Replace EVAP canister with a new one.

䊳 GO TO 4.

QG18DE (EXC CALIF CA)

Evaporative Emission System (Cont’d)

SEF596U

4 CHECK WATER SEPARATOR

1. Check visually for insect nests in the water separator air inlet.

2. Check visually for cracks or flaws in the appearance.

3. Check visually for cracks or flaws in the hose.

4. Check that A and C are not clogged by blowing air into B with A, and then C plugged.

5. In case of NG in items2-4,replace the parts.

NOTE:

쐌 Do not disassemble water separator.

OK or NG

OK 䊳 GO TO 5. NG 䊳 Replace water separator.

SEF829T

5 DETECT MALFUNCTIONING PART

Check the EVAP hose between EVAP canister and water separator for clogging or poor connection.

䊳 Repair or replace EVAP hose.

EC-61

IDX

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Evaporative Emission System (Cont’d)

6 CHECK VENT HOSES AND VENT TUBES

Check hoses and tubes between EVAP canister and refueling control valve for clogging, kink, looseness and improper connection.

OK or NG

OK 䊳 GO TO 7. NG 䊳 Repair or replace hoses and tubes.

7 CHECK FILLER NECK TUBE

Check signal line and recirculation line for clogging, dents and cracks.

OK or NG

OK 䊳 GO TO 8. NG 䊳 Replace filler neck tube.

8 CHECK REFUELING CONTROL VALVE

1. Remove fuel filler cap.

2. Check air continuity between hose ends A and B. Blow air into the hose end B. Air should flow freely into the fuel tank.

3. Blow air into hose end A and check there is no leakage.

4. Apply pressure to both hose ends A and B [20 kPa (150 mmHg, 5.91 inHg)] using a pressure pump and a suitable 3-way connector. Check that there is no leakage.

QG18DE (EXC CALIF CA)

OK or NG

OK (With CONSULT-II) 䊳 GO TO 9. OK (Without CONSULT-

II) NG 䊳 Replace refueling control valve with fuel tank.

䊳 GO TO 10.

EC-62

SEF246Y

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

9 CHECK REFUELING EVAP VAPOR CUT VALVE

With CONSULT-II

1. Remove fuel tank. Refer to FE-6, “FUEL SYSTEM”.

2. Drain fuel from the tank as follows:

a. Remove fuel feed hose located on the fuel level sensor unit retainer. b. Connect a spare fuel hose, one side to fuel level sensor unit retainer where the hose was removed and the other side

to a fuel container.

c. Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II.

3. Check refueling EVAP vapor cut valve for being stuck to close as follows. Blow air into the refueling EVAP vapor cut valve (from hose end B), and check that the air flows freely into the tank.

4. Check EVAP vapor cut valve for being stuck to open as follows.

a. Connect vacuum pump to hose ends A and B using a suitable 3-way connector. b. Remove fuel level sensor unit retainer with fuel level sensor unit.

Always replace O-ring with new one.

c. Put fuel tank upside down. d. Apply vacuum pressure to both hose ends A and B [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel level sensor unit

retainer remaining open and check that the pressure is applicable.

QG18DE (EXC CALIF CA)

Evaporative Emission System (Cont’d)

OK or NG

OK 䊳 GO TO 11. NG 䊳 Replace refueling EVAP vapor cut valve with fuel tank.

SEF246Y

EC-63

IDX

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

Evaporative Emission System (Cont’d)

10 CHECK REFUELING EVAP VAPOR CUT VALVE

Without CONSULT-II

1. Remove fuel tank. Refer to FE-6, “FUEL SYSTEM”.

2. Drain fuel from the tank as follows:

a. Remove fuel level sensor unit retainer. b. Drain fuel from the tank using a hand pump into a fuel container.

3. Check refueling EVAP vapor cut valve for being stuck to close as follows. Blow air into the refueling EVAP vapor cut valve (from hose end B), and check that the air flows freely into the tank.

4. Check EVAP vapor cut valve for being stuck to open as follows.

a. Connect vacuum pump to hose ends A and B using a suitable 3-way connector. b. Remove fuel level sensor unit retainer with fuel level sensor unit.

Always replace O-ring with new one.

c. Put fuel tank upside down. d. Apply vacuum pressure to both hose ends A and B [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel level sensor unit

retainer remaining open and check that the pressure is applicable.

QG18DE (EXC CALIF CA)

OK or NG

OK 䊳 GO TO 11. NG 䊳 Replace refueling EVAP vapor cut valve with fuel tank.

11 CHECK FUEL FILLER TUBE

Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.

OK or NG

OK 䊳 GO TO 12. NG 䊳 Replace fuel filler tube.

12 CHECK ONE-WAY FUEL VALVE-I

Check one-way valve for clogging.

OK or NG

OK 䊳 GO TO 13. NG 䊳 Repair or replace one-way fuel valve with fuel tank.

SEF246Y

EC-64

ENGINE AND EMISSION BASIC CONTROL

SYSTEM DESCRIPTION

13 CHECK ONE-WAY FUEL VALVE-II

1. Make sure that fuel is drained from the tank.

2. Remove fuel filler tube and hose.

3. Check one-way fuel valve for operation as follows. When a stick is inserted, the valve should open, when removing stick it should close.

QG18DE (EXC CALIF CA)

Evaporative Emission System (Cont’d)

Do not drop any material into the tank.

OK or NG

OK 䊳 INSPECTION END NG 䊳 Replace fuel filler tube or replace one-way fuel valve with fuel tank.

Positive Crankcase Ventilation

DESCRIPTION

SEF665U

NIEC0022

SEF921W

This system returns blow-by gas to the intake collector. The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV valve. Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air. The ventilating air is then drawn from the air duct into the crankcase. In this process the air passes through the hose connecting air inlet tubes to rocker cover. Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve. The flow goes through the hose connection in the reverse direction. On vehicles with an excessively high blow-by, the valve does not meet the requirement. This is because some of the flow will go through the hose connection to the intake collector under all conditions.

EC-65

IDX

ENGINE AND EMISSION BASIC CONTROL

Positive Crankcase Ventilation (Cont’d)

SYSTEM DESCRIPTION

QG18DE (EXC CALIF CA)

SEF244Q

ET277

INSPECTION PCV (Positive Crankcase Ventilation) Valve

NIEC0023

NIEC0023S01

With engine running at idle, remove PCV valve from rocker cover. A properly working valve makes a hissing noise as air passes through it. A strong vacuum should be felt immediately when a finger is placed over the valve inlet.

Ventilation Hose

NIEC0023S02

1. Check hoses and hose connections for leaks.

2. Disconnect all hoses and clean with compressed air. If any hose cannot be freed of obstructions, replace.

EC-66

BASIC SERVICE PROCEDURE

QG18DE (EXC CALIF CA)

Fuel Pressure Release

LEC297

PEF823K

Fuel Pressure Release

Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.

WITH CONSULT-II

1. Start engine.

2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-II.

3. After engine stalls, crank it two or three times to release all fuel pressure.

4. Turn ignition switch OFF.

WITHOUT CONSULT-II

1. Remove fuse for fuel pump.

2. Start engine.

3. After engine stalls, crank it two or three times to release all fuel pressure.

4. Turn ignition switch OFF and reconnect fuel pump fuse.

NIEC0024

NIEC0024S01

NIEC0024S02

LEC298

LEC314

Fuel Pressure Check

쐌 When reconnecting fuel line, always use new clamps. 쐌 Make sure that clamp screw does not contact adjacent

parts.

쐌 Use a torque driver to tighten clamps. 쐌 Use Pressure Gauge Kit J-44321 to check fuel pressure. 쐌 Do not perform fuel pressure check with system operat-

ing. Fuel pressure gauge may indicate false readings.

1. Release fuel pressure to zero.

2. Disconnect fuel hose from fuel feed tube (engine side).

3. Install pressure gauge between fuel hose and fuel feed tube.

4. Start engine and check for fuel leakage.

5. Read the indication of fuel pressure gauge.

At idle speed:

With vacuum hose connected

Approximately 235 kPa (2.4 kg/cm

With vacuum hose disconnected

Approximately 294 kPa (3.0 kg/cm

If results are unsatisfactory, perform Fuel Pressure Regulator Check, EC-68.

, 34 psi)

, 43 psi)

NIEC0025

IDX

EC-67

Fuel Pressure Regulator Check

BASIC SERVICE PROCEDURE

QG18DE (EXC CALIF CA)

SEF718B

Fuel Pressure Regulator Check

NIEC0026

1. Stop engine and disconnect fuel pressure regulator vacuum hose from intake manifold collector.

2. Plug intake manifold collector with a rubber cap.

3. Connect variable vacuum source to fuel pressure regulator.

4. Start engine and read indication of fuel pressure gauge as vacuum is changed.

Fuel pressure should decrease as vacuum increases. If results are unsatisfactory, replace fuel pressure regulator.

Injector

REMOVAL AND INSTALLATION

NIEC0027

SEF703X

WEC332

1. Release fuel pressure to zero. Refer to “Fuel Pressure Release”, EC-67.

2. Remove accelerator cables.

3. Remove intake manifold bracket.

4. Remove PCV hose with bracket.

5. Disconnect injector harness connectors.

6. Disconnect fuel pressure regulator vacuum hose from intake manifold collector.

7. Disconnect fuel hoses from fuel tube assembly.

8. Remove injectors with fuel tube assembly.

9. Expand and remove clips securing fuel injectors.

10. Extract fuel injectors straight from fuel tubes.

쐌 Be careful not to damage injector nozzles during removal. 쐌 Do not bump or drop fuel injectors.

11. Carefully install O-rings, including the one used with the pressure regulator.

쐌 Lubricate O-rings by smearing engine oil. 쐌 Be careful not to damage O-rings with service tools finger

nails or clips. Do not expand or twist O-rings.

쐌 Discard old clips; replace with new ones.

EC-68

BASIC SERVICE PROCEDURE

12. Position clips in grooves on fuel injectors.

쐌 Make sure that protrusions of fuel injectors are aligned

with cutouts of clips after installation.

13. Align protrusions of fuel tubes with those of fuel injectors.

14. After properly inserting fuel injectors, check to make sure that fuel tube protrusions are engaged with those of fuel injectors, and that flanges of fuel tubes are engaged with clips.

15. Tighten fuel tube assembly mounting nuts in two stages.

: Tightening torque N·m (kg-m, ft-lb)

1st stage:

12 - 13 (1.2 - 1.4, 9 - 10)

2nd stage:

17 - 23 (1.7 - 2.4, 13 - 17)

16. Install all removed parts in the reverse order of removal.

CAUTION:

After properly connecting fuel tube assembly to injector and

SEF448Y

fuel hose, check connection for fuel leakage.

QG18DE (EXC CALIF CA)

Injector (Cont’d)

SEF058Y

SEF453Y

How to Check Idle Speed and Ignition Timing

IDLE SPEED

Method A 쐌 With CONSULT-II

Check idle speed in “DATA MONITOR” mode with CONSULT-II.

쐌 With GST

Check idle speed in “MODE 1” with GST.

Method B (Using Loop wire)

Check the idle speed using loop wire as shown in the figure.

IGNITION TIMING

Any of following two methods may be used.

Method A

1) Attach timing light to loop wire at the location shown in the figure.

2) Check ignition timing.

NIEC0666

NIEC0666S01

NIEC0666S02

IDX

SEF450Y

EC-69

BASIC SERVICE PROCEDURE

How to Check Idle Speed and Ignition Timing (Cont’d)

Method B

1) Remove No. 1 ignition coil.

2) Connect No. 1 ignition coil and No. 1 spark plug with suitable

3) Check ignition timing.

SEF451Y

QG18DE (EXC CALIF CA)

high-tension wire as shown, and attach timing light clamp to this wire.

SEF166Y

EC-70

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment

QG18DE (EXC CALIF CA)

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment

PREPARATION

1) Make sure that the following parts are in good order.

쐌 Battery 쐌 Ignition system 쐌 Engine oil and coolant levels 쐌 Fuses 쐌 PCM harness connector 쐌 Vacuum hoses 쐌 Air intake system

(Oil filler cap, oil level gauge, etc.)

쐌 Fuel pressure 쐌 Engine compression 쐌 EGR valve operation 쐌 Throttle valve 쐌 EVAP system

2) On models equipped with air conditioner, checks should be carried out while the air conditioner is “OFF”.

3) On models equipped with automatic transaxle, when checking idle speed, ignition timing and mixture ratio, checks should be carried out while shift lever is in “P” or “N” position.

4) When measuring “CO” percentage, insert probe more than 40 cm (15.7 in) into tail pipe.

5) Turn off headlamps, heater blower, rear window defogger.

6) Keep front wheels pointed straight ahead.

7) Make the check after the cooling fan has stopped.

=NIEC0028

NIEC0028S01

EC-71

IDX

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

QG18DE (EXC CALIF CA)

Overall Inspection Sequence

NIEC0028S0101

SEF554Y

NOTE: If a vehicle contains a part which is operating outside of design specifications with no MIL illumination, the part shall not be replaced prior to emission testing unless it is determined that the part has been tampered with or abused in such a way that the diagnostic system cannot reasonably be expected to detect the resulting malfunction.

EC-72

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

QG18DE (EXC CALIF CA)

INSPECTION PROCEDURE

1 INSPECTION START

1. Visually check the following:

쐌 Air cleaner clogging 쐌 Hoses and ducts for leaks 쐌 EGR valve operation 쐌 Electrical connectors 쐌 Gasket 쐌 Throttle position and throttle position sensor operation

2. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge. Ensure engine stays below 1,000 rpm.

3. Open engine hood and run engine at about 2,000 rpm for about 2 minutes under no-load.

=NIEC0028S02

SEF976U

4. Make sure that no DTC is displayed with CONSULT-II or GST.

OK or NG

OK 䊳 GO TO 3. NG 䊳 GO TO 2.

2 REPAIR OR REPLACE

Repair or replace components as necessary according to corresponding “Diagnostic Procedure”.

䊳 GO TO 3.

SEF977U

EC-73

IDX

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

QG18DE (EXC CALIF CA)

3 CHECK IGNITION TIMING

1. Run engine at about 2,000 rpm for about 2 minutes under no-load.

2. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed for about 1 minute.

3. Check ignition timing with a timing light.

SEF978U

M/T: 9°±2° BTDC A/T: 9°±2° BTDC (in “P” or “N” position)

OK or NG

OK 䊳 GO TO 5. NG 䊳 GO TO 4.

4 DETECT MALFUNCTIONING PART

Check the following.

쐌 Check camshaft position sensor (PHASE) and circuit, repair or replace if necessary. Refer to EC-363. 쐌 Check crankshaft position sensor (POS) and circuit, repair or replace if necessary. Refer to EC-358, EC-560. 쐌 Check PCM function by substituting another known good PCM.

(PCM may be the cause of a problem, but this is rarely the case.)

䊳 GO TO 3.

LEC245

EC-74

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

5 CHECK TARGET IDLE SPEED

With CONSULT-II

1. Run engine at about 2,000 rpm for about 2 minutes under no-load and run engine for about 1 minute at idle speed.

2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.

M/T: 650±50 rpm A/T: 800±50 rpm (in “P” or “N” position)

QG18DE (EXC CALIF CA)

SEF058Y

Without CONSULT-II

1. Run engine at about 2,000 rpm for about 2 minutes under no-load and run engine for about 1 minute at idle speed.

2. Check idle speed.

M/T: 650±50 rpm A/T: 800±50 rpm (in “P” or “N” position)

OK or NG

OK (With CONSULT-II) 䊳 GO TO 8. OK (Without CONSULT-

II) NG 䊳 GO TO 6.

6 CHECK TARGET IDLE SPEED AGAIN

Perform test No. 5 again.

OK (With CONSULT-II) 䊳 GO TO 8. OK (Without CONSULT-

II) NG 䊳 GO TO 7.

7 DETECT MALFUNCTIONING PART

Check the following.

쐌 Check IACV-AAC valve and replace if necessary. Refer to EC-455. 쐌 Check IACV-AAC valve harness and repair if necessary. Refer to EC-459. 쐌 Check PCM function by substituting another known-good PCM.

(PCM may be the cause of a problem, but this is rarely the case.)

With CONSULT-II

Without CONSULT-II

䊳 GO TO 9.

OK or NG

䊳 GO TO 9.

䊳 GO TO 8.

䊳 GO TO 9.

EC-75

IDX

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

QG18DE (EXC CALIF CA)

8 CHECK HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1) SIGNAL

With CONSULT-II

1. Run engine at about 2,000 rpm for about 2 minutes under no-load.

2. See “HO2S1 MNTR B1” in “DATA MONITOR” mode.

3. Running engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.

1 time: RICH → LEAN → RICH 2 times: RICH → LEAN → RICH → LEAN → RICH

OK or NG

OK 䊳 GO TO 12. NG (Monitor does not

fluctuate.) NG (Monitor fluctuates

less than 5 times.)

䊳 GO TO 17.

䊳 GO TO 10.

SEF449Y

9 CHECK HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1) SIGNAL

Without CONSULT-II

1. Run engine at about 2,000 rpm for about 2 minutes under no-load.

2. Set voltmeter probe between PCM terminal 62 and ground.

3. Make sure that the voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000 rpm.

1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V 2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V

OK or NG

OK 䊳 GO TO 12. NG (Voltage does not

fluctuate.) NG (Voltage fluctuates

less than 5 times.)

䊳 GO TO 17.

䊳 GO TO 10.

EC-76

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

10 CHECK HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1) SIGNAL

With CONSULT-II

1. Stop engine.

2. Replace heated oxygen sensor 1 (front) (bank 1).

3. Start engine and warm it up to normal operating temperature.

4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.

5. See “HO2S MNTR (B1)” in “DATA MONITOR” mode.

6. Running engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.

1 time: RICH → LEAN → RICH 2 times: RICH → LEAN → RICH → LEAN → RICH

Without CONSULT-II

1. Stop engine.

2. Replace heated oxygen sensor 1 (front) (bank 1).

3. Start engine and warm it up to normal operating temperature.

4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.

5. Set voltmeter probe between PCM terminal 94 and ground.

6. Make sure that the voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000 rpm.

1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V 2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V

OK or NG

OK (With CONSULT-II) 䊳 GO TO 12. OK (Without CONSULT-

II) NG 䊳 GO TO 11.

䊳 GO TO 13.

QG18DE (EXC CALIF CA)

11 DETECT MALFUNCTIONING PART

Check the following.

1. Check fuel pressure regulator. Refer to EC-68.

2. Check mass air flow sensor and its circuit. Refer to EC-176.

3. Check injector and its circuit. Refer to EC-665. Clean or replace if necessary.

4. Check engine coolant temperature sensor and its circuit. Refer to EC-196.

5. Check PCM function by substituting another known-good PCM. (PCM may be the cause of a problem, but this is rarely the case.)

䊳 GO TO 3.

EC-77

IDX

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

QG18DE (EXC CALIF CA)

12 CHECK HEATED OXYGEN SENSOR 1 (FRONT) (BANK 2) SIGNAL

With CONSULT-II

1. See “HO2S1 MNTR (B2)” in “DATA MONITOR” mode.

2. Running engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature), check that the monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.

1 time: RICH → LEAN → RICH 2 times: RICH → LEAN → RICH → LEAN → RICH

OK or NG

OK 䊳 INSPECTION END NG (Monitor does not

fluctuate.) NG (Monitor fluctuates

less than 5 times.)

䊳 GO TO 16.

䊳 GO TO 14.

SEF449Y

13 CHECK HEATED OXYGEN SENSOR 1 (FRONT) (BANK 2) SIGNAL

Without CONSULT-II

1. Set voltmeter probe between PCM terminal 62 and ground.

2. Make sure that the voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000 rpm.

1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V 2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V

OK or NG

OK 䊳 INSPECTION END NG (Voltage does not

fluctuate.) NG (Voltage fluctuates

less than 5 times.)

䊳 GO TO 16.

䊳 GO TO 14.

EC-78

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

14 CHECK FRONT OXYGEN SENSOR 1 (FRONT) (BANK 2) SIGNAL

With CONSULT-II

1. Stop engine.

2. Replace heated oxygen sensor 1 (front) (bank 2).

3. Start engine and warm it up to normal operating temperature.

4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.

5. See “HO2S1 MNTR (B2)” in “DATA MONITOR” mode.

6. Maintaining engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.

1 time: RICH → LEAN → RICH 2 times: RICH → LEAN → RICH → LEAN → RICH

Without CONSULT-II

1. Stop engine.

2. Replace heated oxygen sensor 1 (front) (bank 2).

3. Start engine and warm it up to normal operating temperature.

4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.

5. Set voltmeter probe between PCM terminal 62 and ground.

6. Make sure that the voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000 rpm.

1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V 2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V

OK or NG

OK 䊳 INSPECTION END NG 䊳 GO TO 15.

QG18DE (EXC CALIF CA)

15 DETECT MALFUNCTIONING PART

Check the following.

쐌 Check fuel pressure regulator. Refer to EC-68. 쐌 Check mass air flow sensor and its circuit. Refer to EC-176. 쐌 Check injector and injector circuit. Refer to EC-665.

Clean or replace if necessary.

쐌 Check engine coolant temperature sensor and circuit. Refer to EC-196. 쐌 Check PCM function by substituting another known-good PCM.

(PCM may be the cause of a problem, but this is rarely the case.)

䊳 GO TO 5.

16 CHECK HEATED OXYGEN SENSOR 1 (FRONT) (BANK 2) HARNESS

1. Turn off engine and disconnect battery ground cable.

2. Disconnect PCM harness connector.

3. Disconnect heated oxygen sensor 1 (front) (bank 2) harness connector.

4. Check harness continuity between PCM terminal 62 and heated oxygen sensor 1 (front) (bank 2) harness connector terminal 1. Refer to Wiring Diagram, EC-221.

Continuity should exist.

OK or NG

OK 䊳 GO TO 19. NG 䊳 GO TO 18.

EC-79

IDX

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

QG18DE (EXC CALIF CA)

17 CHECK HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1) HARNESS

1. Turn off engine and disconnect battery ground cable.

2. Disconnect PCM harness connector.

3. Disconnect heated oxygen sensor 1 (front) (bank 1) harness connector.

4. Check harness continuity between PCM terminal 62 and heated oxygen sensor 1 (front) (bank 1) harness connector terminal 1. Refer to Wiring Diagram, EC-221.

Continuity should exist.

OK or NG

OK 䊳 GO TO 19. NG 䊳 GO TO 18.

18 REPAIR OR REPLACE

Repair or replace harness between PCM and heated oxygen sensor.

䊳 GO TO 5.

19 PREPARATION FOR “CO” % CHECK

With CONSULT-II

1. Reconnect PCM harness connector and battery ground cable.

2. Turn ignition switch “ON”.

3. Select “COOLANT TEMP” in “ACTIVE TEST” mode.

4. Set “COOLANT TEMP” to 5°C (41°F) by touching “DWN” and “Qd”.

Without CONSULT-II

1. Disconnect PCM harness connector.

2. Disconnect engine coolant temperature sensor harness connector.

3. Connect a resistor (4.4 kΩ) between terminals of engine coolant temperature sensor harness connector.

䊳 GO TO 20.

EC-80

SEF712Y

SEF982UA

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

20 CHECK “CO” %

1. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.

2. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed.

QG18DE (EXC CALIF CA)

SEF976U

SEF978U

3. Check “CO” %.

Idle CO:0-8%

a. Disconnect the resistor from terminals of engine coolant temperature sensor. b. Connect engine coolant temperature sensor harness connector to engine coolant temperature sensor.

OK 䊳 GO TO 21. NG 䊳 GO TO 22.

21 CHECK HEATED OXYGEN SENSOR 1 (FRONT) (BANK 1/BANK 2) SIGNAL

1. Stop engine.

2. Replace heated oxygen sensor 1 (front) (bank 1/bank 2).

3. Start engine and warm it up to normal operating temperature.

4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.

5. See “HO2S1 (B1)” and “HO2S1 (B2)” in “DATA MONITOR” mode.

6. Maintaining engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature.), check that the

1. Stop engine.

2. Replace heated oxygen sensor 1 (front) (bank 1/bank 2).

3. Start engine and warm it up to normal operating temperature.

4. Run engine at approx. 2,000 rpm for approx. 2 minutes under no-load.

5. Set voltmeter probe between PCM terminal 94 or 62 and ground.

6. Make sure that voltage fluctuates between 0 - 0.3V and 0.6 - 1.0V more than 5 times during 10 seconds at 2,000 rpm.

OK 䊳 GO TO 5. NG 䊳 GO TO 22.

Without CONSULT-II

After checking CO%,

OK or NG

With CONSULT-II

monitor fluctuates between “LEAN” and “RICH” more than 5 times during 10 seconds.

1 time: RICH → LEAN → RICH 2 times: RICH → LEAN → RICH → LEAN → RICH

Without CONSULT-II

1 time: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V 2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V

OK or NG

IDX

EC-81

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

22 DETECT MALFUNCTIONING PART

Check the following.

쐌 Connect front heated oxygen sensor harness connectors to front heated oxygen sensors. 쐌 Check fuel pressure regulator. Refer to EC-68. 쐌 Check mass air flow sensor and circuit. Refer to EC-176. 쐌 Check injector and injector circuit. Refer to EC-665.

Clean or replace if necessary.

쐌 Check engine coolant temperature sensor and circuit. Refer to EC-196. 쐌 Check PCM function by substituting another known good PCM.

(PCM may be the cause of a problem, but this is rarely the case.)

䊳 GO TO 5.

QG18DE (EXC CALIF CA)

EC-82

BASIC SERVICE PROCEDURE

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)

QG18DE (EXC CALIF CA)

SEF452Y

SEF454Y

SEF455Y

Idle Air Volume Learning

DESCRIPTION

“Idle Air Volume Learning” is an operation to learn the idle air volume that keeps each engine within the specific range. It must be performed under any of the following conditions:

쐌 Each time IACV-AAC valve, throttle body or PCM is replaced. 쐌 Idle speed or ignition timing is out of specification.

PRE-CONDITIONING

Before performing “IdleAir Volume Learning”, make sure that all of the following conditions are satisfied. Learning will be cancelled if any of the following conditions are missed for even a moment.

쐌 Battery voltage: More than 12.9V (At idle) 쐌 Engine coolant temperature: 70 - 95°C (158 - 203°F) 쐌 PNP switch: ON 쐌 Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)

On vehicles equipped with daytime running light systems, if the parking brake is applied before the engine is started the headlamp will not be illuminated.

쐌 Cooling fan motor: Not operating 쐌 Steering wheel: Neutral (Straight-ahead position) 쐌 Vehicle speed: Stopped 쐌 Transmission: Warmed-up

For A/T models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/T” system indicates less than 0.9V. For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.

OPERATION PROCEDURE

With CONSULT-II

1. Turn ignition switch “ON” and wait at least 1 second.

2. Turn ignition switch “OFF” and wait at least 10 seconds.

3. Start engine and warm it up to normal operating temperature.

4. Check that all items listed under the topic “PRE-CONDITIONING” (previously mentioned) are in good order.

5. Turn ignition switch “OFF” and wait at least 5 seconds.

6. Start the engine and let it idle for at least 30 seconds.

7. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.

8. Touch “START” and wait 20 seconds.

9. Make sure that “CMPLT” is displayed on CONSULT-II screen. If “INCMP” is displayed, “Idle Air Volume Learning” will not be carried out successfully. In this case, find the cause of the problem by referring to the NOTE on next page.

10. Rev up the engine two or three times. Make sure that idle speed and ignition timing are within specifications.

ITEM SPECIFICATION

=NIEC0503

NIEC0503S01

NIEC0503S02

NIEC0503S03

NIEC0503S0301

Idle speed M/T: 650±50 rpm

A/T: 800±50 rpm (in “P” or “N” position)

Ignition timing M/T: 9°±2° BTDC

A/T: 9°±2° BTDC (in “P” or “N” position)

EC-83

IDX

Idle Air Volume Learning (Cont’d)

BASIC SERVICE PROCEDURE

QG18DE (EXC CALIF CA)

SEF837X

Without CONSULT-II

NIEC0503S0302

1. Turn ignition switch “ON” and wait at least 1 second.

2. Turn ignition switch “OFF” and wait at least 10 seconds.

3. Start engine and warm it up to normal operating temperature.

4. Check that all items listed under the topic “PRECONDITIONING”, EC-83, are in good order.

5. Turn ignition switch “OFF” and wait at least 10 seconds.

6. Start the engine and let it idle for at least 30 seconds.

7. Disconnect throttle position sensor harness connector (brown), then reconnect it within 5 seconds.

8. Wait 20 seconds.

9. Make sure that idle speed is within specifications. If not, the result will be incomplete. In this case, find the cause of the problem by referring to the NOTE below.

10. Rev up the engine two or three times. Make sure that idle speed and ignition timing are within specifications.

ITEM SPECIFICATION Idle speed M/T: 650±50 rpm

A/T: 800±50 rpm (in “P” or “N” position)

Ignition timing M/T: 9°±2° BTDC

A/T: 9°±2° BTDC (in “P” or “N” position)

NOTE: If idle air volume learning cannot be performed successfully, proceed as follows:

1) Check that throttle valve is fully closed.

2) Check that downstream of throttle valve is free from air

leakage.

3) Adjust closed throttle position switch and reset memory. (Refer to Basic Inspection, EC-131.)

4) When the above three items check out OK, engine component parts and their installation condition are questionable. Check and eliminate the cause of the problem.

5) If any of the following conditions occur after the engine has started, eliminate the cause of the problem and perform “Idle air volume learning” all over again:

쐌 Engine stalls. 쐌 Erroneous idle. 쐌 Blown fuses related to the IACV-AAC valve system.

EC-84

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

QG18DE (EXC CALIF CA)

Introduction

NIEC0029

The PCM has an on board diagnostic system, which detects malfunctions related to engine sensors or actuators. The PCM also records various emission-related diagnostic information including:

Emission-related diagnostic information SAE Mode Diagnostic Trouble Code (DTC) Mode 3 of SAE J1979 Freeze Frame data Mode 2 of SAE J1979 System Readiness Test (SRT) code Mode 1 of SAE J1979 1st Trip Diagnostic Trouble Code (1st Trip DTC) Mode 7 of SAE J1979 1st Trip Freeze Frame data Test values and Test limits Mode 6 of SAE J1979

The above information can be checked using procedures listed in the table below.

X: Applicable —: Not applicable

DTC 1st trip DTC

CONSULT-II X X X X X — GST X X*1 X — XX

*1: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.

Freeze Frame

data

1st trip Freeze

Frame data

SRT code Test value

The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected in two consecutive trips (Two trip detection logic), or when the PCM enters fail-safe mode. (Refer to EC-146.)

Two Trip Detection Logic

NIEC0030

When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the PCM memory. The MIL will not light up at this stage. <1st trip> If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in the PCM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during vehicle operation. Specific on board diagnostic items will cause the PCM to light up or blink the MIL, and store DTC and Freeze Frame data, even in the 1st trip, as shown below.

X: Applicable —: Not applicable

MIL DTC 1st trip DTC

Items

Coolant overtemperature enrichment protection — DTC: P0217

Misfire (Possible three way catalyst damage) — DTC: P0300 - P0304 is being detected

Misfire (Possible three way catalyst damage) — DTC: P0300 - P0304 has been detected

Closed loop control — DTC: P1148

1st trip 2nd trip

Blinking

— X ——X — X —

X ———X — X —

——X ——X ——

— X ——X — X —

Lighting

Blinking

Lighting

1st trip

displaying

2nd trip

displaying

1st trip

displaying

2nd trip

displaying

Fail-safe items (Refer to EC-146.) — X ——X*1 — X*1 — Except above ———X — XX—

*1: Except “PCM”

EC-85

IDX

ON BOARD DIAGNOSTIC SYSTEM

Emission-related Diagnostic Information

DESCRIPTION

QG18DE (EXC CALIF CA)

Emission-related Diagnostic Information

DTC AND 1ST TRIP DTC

NIEC0031

NIEC0031S01

The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic result obtained. If the PCM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip DTC will not be displayed. If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the PCM memory. The MIL will not light up (two trip detection logi0319c). If the same malfunction is not detected in the 2nd trip (meeting the required driving pattern), the 1st trip DTC is cleared from the PCM memory. If the same malfunction is detected in the 2nd trip, both the 1st trip DTC and DTC are stored in the PCM memory and the MIL lights up. In other words, the DTC is stored in the PCM memory and the MIL lights up when the same malfunction occurs in two consecutive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the 1st trip, the DTC and 1st trip DTC are stored in the PCM memory. Procedures for clearing the DTC and the 1st trip DTC from the PCM memory are described in “HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION”, EC-98. For malfunctions in which 1st trip DTCs are displayed, refer to EC-96. These items are required by legal regulations to continuously monitor the system/component. In addition, the items monitored non-continuously are also displayed on CONSULT-II. 1st trip DTC is specified in Mode 7 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL and therefore does not warn the driver of a problem. However, 1st trip DTC detection will not prevent the vehicle from being tested, for example during Inspection/Maintenance (I/M) tests. When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame data as specified in “Work Flow” procedure Step II, refer to EC-129. Then perform “DTC Confirmation Procedure” or “Overall Function Check” to try to duplicate the problem. If the malfunction is duplicated, the item requires repair.

How to Read DTC and 1st Trip DTC

NIEC0031S0101

DTC and 1st trip DTC can be read by the following methods.

With CONSULT-II With GST

CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P1320, P0705, P0750, etc. These DTCs are prescribed by SAE J2012. (CONSULT-II also displays the malfunctioning component or system.)

쐌 1st trip DTC No. is the same as DTC No. 쐌 Output of a DTC indicates a malfunction. However, GST does not indicate whether the malfunction

is still occurring or has occurred in the past and has returned to normal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if available) is recommended.

A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunction is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-II. Time data indicates how many times the vehicle was driven after the last detection of a DTC. If the DTC is being detected currently, the time data will be “0”. If a 1st trip DTC is stored in the PCM, the time data will be “[1t]”.

SEF698X

FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA

NIEC0031S02

The PCM records the driving conditions such as fuel system status, calculated load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed, vehicle speed and absolute pressure at the moment a malfunction is detected. Data which are stored in the PCM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.

EC-86

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For details, see EC-112. Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the PCM. 1st trip freeze frame data is stored in the PCM memory along with the 1st trip DTC. There is no priority for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once freeze frame data (2nd trip detection/MIL on) is stored in the PCM memory, 1st trip freeze frame data is no longer stored. Remember, only one set of freeze frame data can be stored in the PCM. The PCM has the following priorities to update the data.

Priority Items

2 Except the above items (Includes A/T related items) 3 1st trip freeze frame data

Freeze frame data Misfire — DTC: P0300 - P0304

Fuel Injection System Function — DTC: P0171, P0172

QG18DE (EXC CALIF CA)

For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different malfunction is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is stored in the PCM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st trip freeze frame data can be stored in the PCM). If freeze frame data is stored in the PCM memory and freeze frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the PCM memory. Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the PCM memory is erased. Procedures for clearing the PCM memory are described in “HOW TO ERASE EMISSIONRELATED DIAGNOSTIC INFORMATION”, EC-98.

SYSTEM READINESS TEST (SRT) CODE

System Readiness Test (SRT) code is specified in Mode 1 of SAE J1979. As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of SRT be used to indicate whether the PCM has completed self-diagnosis of major emission systems and components. Completion must be verified in order for the emissions inspection to proceed. If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use the information in this Service Manual to set the SRT to “CMPLT”. In most cases the PCM will automatically complete its self-diagnosis cycle during normal usage, and the SRT status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains “CMPLT” until the self-diagnosis memory is erased. Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer’s normal driving pattern; the SRT will indicate “INCMP” for these items.

NOTE:

The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the PCM memory power supply is interrupted for several hours.

If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will continue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the vehicle is returned to the customer untested.

NOTE:

If MIL is “ON” during the state emissions inspection, the vehicle is also returned to the customer untested even though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”) and DTC (No DTCs) before the inspection.

NIEC0031S03

EC-87

IDX

ON BOARD DIAGNOSTIC SYSTEM

Emission-related Diagnostic Information (Cont’d)

DESCRIPTION

QG18DE (EXC CALIF CA)

SRT Item

The table below shows required self-diagnostic items to set the SRT to “CMPLT”.

SRT item

(CONSULT-II indica-

tion) CATALYST 3 Three way catalyst function P0420, P0430 EVAP SYSTEM 2 EVAP control system (small leak) (negative pressure) P0440

O2 SENSOR 3 Heated oxygen sensor 1 (front) (bank 1)/(bank 2) (circuit) P0130, P0150

Perfor-

mance Pri-

ority*

3 EVAP control system (very small leak) (negative pressure/positive

Required self-diagnostic items to set the SRT to “CMPLT”

pressure) EVAP control system purge flow monitoring P1447

Heated oxygen sensor 1 (front) (bank 1)/(bank 2) (lean shift monitoring)

Heated oxygen sensor 1 (front) (bank 1)/(bank 2) (rich shift monitoring)

Heated oxygen sensor 1 (front) (bank 1)/(bank 2) (response monitoring)

Heated oxygen sensor 1 (front) (bank 1)/(bank 2) (high voltage) P0134, P0154 Heated oxygen sensor 2 (rear) (bank 1)/(bank 2) (min. voltage

monitoring)

Corresponding

DTC No.

P1441

P0131, P0151

P0132, P0152

P0133, P0153

P0137, P0157

=NIEC0031S0307

Heated oxygen sensor 2 (rear) (bank 1)/(bank 2) (max. voltage monitoring)

Heated oxygen sensor 2 (rear) (bank 1)/(bank 2) (response monitoring)

Heated oxygen sensor 2 (rear) (bank 1)/(bank 2) (high voltage) P0140, P0160

O2 SEN HEATER 3 Heated oxygen sensor 1 (front) heater (bank 1)/(bank 2) P0135, P0155

Heated oxygen sensor 2 (rear) heater (bank 1)/(bank 2) P0141, P0161

EGR SYSTEM 3 EGR function (close) P0400

1 EGR function (open) P1402

*: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for models with CONSULT-II.

P0138, P0158

P0139, P0159

EC-88

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

QG18DE (EXC CALIF CA)

SRT Set Timing

=NIEC0031S0308

SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and is shown in the table below.

Example

Self-diagnosis result

All OK Case 1 P0400 OK (1) — (1) OK (2) — (2)

Case 2 P0400 OK (1) — (1) — (1) — (1)

NG exists Case 3 P0400 OK OK ——

Diagnosis

P0402 OK (1) — (1) — (1) OK (2) P1402 OK (1) OK (2) — (2) — (2)

SRT of EGR “CMPLT”“CMPLT”“CMPLT”“CMPLT”

P0402 — (0) — (0) OK (1) — (1) P1402 OK (1) OK (2) — (2) — (2)

SRT of EGR “INCMP”“INCMP”“CMPLT”“CMPLT”

P0402 ——— —

P1402 NG — NG

(1st trip)

DTC

SRT of EGR “INCMP”“INCMP”“INCMP”“CMPLT”

+ ON , OFF + ON , OFF + ON , OFF + ON ,

1st trip DTC — 1st trip DTC

Ignition cycle

(Consecutive NG)

DTC

(= MIL “ON”)

OK: Self-diagnosis is carried out and the result is OK. NG: Self-diagnosis is carried out and the result is NG. —: Self-diagnosis is not carried out.

When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will indicate “CMPLT”. , Case 1 above When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate “CMPLT” at the time the respective self-diagnoses have at least one OK result. , Case 2 above If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indicate “CMPLT”. , Case 3 above The table above shows that the minimum number of cycles for setting SRT as “INCMP” is one (1) for each self-diagnosis (Case1&2)ortwo(2)foroneofself-diagnoses (Case 3). However, in preparation for the state emissions inspection, it is unnecessary of each self-diagnosis to be executed twice (Case 3) for the following reasons:

쐌 The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result. 쐌 The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results. 쐌 When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to “CMPLT” of SRT, the self-diag-

nosis memory must be erased from PCM after repair.

쐌 If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.

NOTE:

SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out prior to the state emission inspection even though the SRT indicates “CMPLT”.

SRT Service Procedure

NIEC0031S0309

If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review the flowchart diagnostic sequence on the next page.

IDX

EC-89

ON BOARD DIAGNOSTIC SYSTEM

Emission-related Diagnostic Information (Cont’d)

DESCRIPTION

QG18DE (EXC CALIF CA)

SEF170Z

*1 EC-86 *2 EC-90 *3 EC-91

How to Display SRT Code

NIEC0031S0301

With CONSULT-II

Selecting “SRT STATUS” in “DTC CONFIRMATION” mode with CONSULT-II. For items whose SRT codes are set, a “CMPLT” is displayed on the CONSULT-II screen; for items whose SRT codes are not set, “INCMP” is displayed.

With GST

Selecting Mode 1 with GST (Generic Scan Tool) A sample of CONSULT-II display for SRT code is shown below. “INCMP” means the self-diagnosis is incomplete and SRT is not set. “CMPLT” means the self-diagnosis is complete and SRT is set.

EC-90

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

QG18DE (EXC CALIF CA)

SEF713Y

How to Set SRT Code

To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each diagnosis may require a long period of actual driving under various conditions.

With CONSULT-II

Perform corresponding DTC Confirmation Procedure one by one based on “Performance Priority” in the table on EC-88.

Without CONSULT-II

The most efficient driving pattern in which SRT codes can be properly set is explained on the next page. The driving pattern should be performed one or more times to set all SRT codes.

NIEC0031S0302

EC-91

IDX

ON BOARD DIAGNOSTIC SYSTEM

Emission-related Diagnostic Information (Cont’d)

DESCRIPTION

QG18DE (EXC CALIF CA)

Driving Pattern

NIEC0031S0303

EC-92

SEF676Y

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

쐌 The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driv-

ing habits, etc. Zone A refers to the range where the time required, for the diagnosis under normal conditions*, is the shortest. Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within zone A.

*: Normal conditions refer to the following:

− Sea level

− Flat road

− Ambient air temperature: 20 - 30°C(68-86°F)

− Diagnosis is performed as quickly as possible under normal conditions.

Under different conditions [For example: ambient air temperature other than 20 - 30°C(68-86°F)], diag- nosis may also be performed.

Pattern 1:

쐌 The engine is started at the engine coolant temperature of −10 to 35°C (14 to 95°F)

(where the voltage between the PCM terminals 70 and 58 is 3.0 - 4.3V).

쐌 The engine must be operated at idle speed until the engine coolant temperature is greater than 70°C

(158°F) (where the voltage between the PCM terminals 70 and 58 is lower than 1.4V).

쐌 The engine is started at the fuel tank temperature of warmer than 0°C (32°F) (where the voltage

between the PCM terminal 82 and ground is less than 4.1V).

Pattern 2: 쐌 When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.

In this case, the time required for diagnosis may be extended. Pattern 3: 쐌 The driving pattern outlined in *2 must be repeated at least 3 times. Pattern 4:

쐌 Tests are performed after the engine has been operated for at least 17 minutes. 쐌 The accelerator pedal must be held very steady during steady-state driving. 쐌 If the accelerator pedal is moved, the test must be conducted all over again.

*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again. *2: Operate the vehicle in the following driving pattern.

1) Decelerate vehicle to 0 km/h (0 MPH) and let engine idle.

2) Repeat driving pattern shown below at least 10 times.

쐌 During acceleration, hold the accelerator pedal as steady as possible.

3) Repeat steps 1 and 2 until the EGR system SRT is set.

QG18DE (EXC CALIF CA)

SEF414S

*3: Checking the vehicle speed with GST is advised.

Suggested Transmission Gear Position for A/T Models

Set the selector lever in the “D” position with the overdrive switch turned ON.

EC-93

IDX

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

Suggested upshift speeds for M/T models

Shown below are suggested vehicle speeds for shifting into a higher gear. These suggestions relate to fuel economy and vehicle performance. Actual upshift speeds will vary according to road conditions, the weather and individual driving habits.

QG18DE (EXC CALIF CA)

For normal acceleration in low altitude

areas

[less than 1,219 m (4,000 ft)]:

Gear change

1st to 2nd 24 (15) 25 (15) 2nd to 3rd 40 (25) 40 (25) 3rd to 4th 65 (40) 65 (40) 4th to 5th 75 (45) 75 (45)

ACCEL shift point

km/h (MPH)

For quick acceleration in low altitude areas and high altitude areas [over 1,219 m (4,000 ft)]:

km/h (MPH)

Suggested Maximum Speed in Each Gear

Downshift to a lower gear if the engine is not running smoothly, or if you need to accelerate. Do not exceed the maximum suggested speed (shown below) in any gear. For level road driving, use the highest gear suggested for that speed. Always observe posted speed limits and drive according to the road conditions to ensure safe operation. Do not over-rev the engine when shifting to a lower gear as it may cause engine damage or loss of vehicle control.

Gear km/h (MPH) 1st 48 (30) 2nd 84 (52) 3rd 128 (80) 4th — 5th —

TEST VALUE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II)

NIEC0031S04

The following is the information specified in Mode 6 of SAE J1979. The test value is a parameter used to determine whether a system/circuit diagnostic test is “OK” or “NG” while being monitored by the PCM during self-diagnosis. The test limit is a reference value which is specified as the maximum or minimum value and is compared with the test value being monitored. Items for which these data (test value and test limit) are displayed are the same as SRT code items (9 test items). These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be displayed on the GST screen.

X: Applicable —: Not applicable

SRT item Self-diagnostic test item

Three way catalyst function

(bank 1)

CATALYST

Three way catalyst function

(bank 2)

EVAP control system

(Small leak)

EVAP SYSTEM

EVAP control system purge flow

monitoring

Test value (GST display)

Test limit Application

TID CID

02H 81H Min. X

05H 03H Max. X

06H 83H Min. X

EC-94

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

QG18DE (EXC CALIF CA)

SRT item Self-diagnostic test item

Heated oxygen sensor 1 (front)

(bank 1)

Heated oxygen sensor 1 (front)

(bank 2)

O2 SENSOR

Heated oxygen sensor 2 (rear)

(bank 1)

Heated oxygen sensor 2 (rear)

(bank 2)

Test value (GST display)

Test limit Application

TID CID 09H 04H Max. X 0AH 84H Min. X 0BH 04H Max. X

0CH 04H Max. X 0DH 04H Max. X

11H 05H Max. X 12H 85H Min. X 13H 05H Max. X 14H 05H Max. X 15H 05H Max. X 19H 86H Min. X

1AH 86H Min. X 1BH 06H Max. X 1CH 06H Max. X

21H 87H Min. X 22H 87H Min. X 23H 07H Max. X 24H 07H Max. X

Heated oxygen sensor 1 heater (front)

(bank 1)

Heated oxygen sensor 1 heater (front)

(bank 2)

O2 SENSOR HEATER

Heated oxygen sensor 2 heater (rear)

(bank 1)

Heated oxygen sensor 2 heater (rear)

(bank 2)

EGR SYSTEM EGR function

29H 08H Max. X

2AH 88H Min. X 2BH 09H Max. X 2CH 89H Min. X 2DH 0AH Max. X 2EH 8AH Min. X 2FH 0BH Max. X

30H 8BH Min. X 31H 8CH Min. X 32H 8CH Min. X 33H 8CH Min. X 34H 8CH Min. X 35H 0CH Max. X

IDX

EC-95

ON BOARD DIAGNOSTIC SYSTEM

Emission-related Diagnostic Information (Cont’d)

DESCRIPTION

QG18DE (EXC CALIF CA)

EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS

X: Applicable —: Not applicable

Items

(CONSULT-II screen terms)

NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED.

MAF SEN/CIRCUIT P0100 —— X EC-176 ABSL PRES SEN/CIRC P0105 —— X EC-185 AIR TEMP SEN/CIRC P0110 ——X EC-190 COOLANT T SEN/CIRC P0115 —— X EC-196 THRTL POS SEN/CIRC P0120 ——X EC-201 *COOLAN T SEN/CIRC P0125 —— X EC-213 HO2S1 (B1) P0130 X X X*2 EC-218 HO2S1 (B1) P0131 X X X*2 EC-227 HO2S1 (B1) P0132 X X X*2 EC-233 HO2S1 (B1) P0133 X X X*2 EC-240 HO2S1 (B1) P0134 X X X*2 EC-251

DTC*1 SRT code

P0000 ————

Test value/ Test

limit

(GST only)

1st trip DTC*1 Reference page

NIEC0031S05

HO2S1 HTR (B1) P0135 X X X*2 EC-259 HO2S2 (B1) P0137 X X X*2 EC-265 HO2S2 (B1) P0138 X X X*2 EC-274 HO2S2 (B1) P0139 X X X*2 EC-283 HO2S2 (B1) P0140 X X X*2 EC-292 HO2S2 HTR (B1) P0141 X X X*2 EC-300 HO2S1 (B2) P0150 X X X*2 EC-218 HO2S1 (B2) P0151 X X X*2 EC-227 HO2S1 (B2) P0152 X X X*2 EC-233 HO2S1 (B2) P0153 X X X*2 EC-240 HO2S1 (B2) P0154 X X X*2 EC-251 HO2S1 HTR (B2) P0155 X X X*2 EC-259 HO2S2 (B2) P0157 X X X*2 EC-265 HO2S2 (B2) P0158 X X X*2 EC-274 HO2S2 (B2) P0159 X X X*2 EC-283 HO2S2 (B2) P0160 X X X*2 EC-292 HO2S2 HTR (B2) P0161 X X X*2 EC-300 FUEL SYS-LEAN/BK1 P0171 ——X EC-306 FUEL SYS-RICH/BK1 P0172 ——X EC-315 FUEL SYS-LEAN/BK2 P0174 ——X EC-306 FUEL SYS-RICH/BK2 P0175 ——X EC-315 FUEL TEMP SEN/CIRC P0180 ——X EC-324

EC-96

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

QG18DE (EXC CALIF CA)

Items

(CONSULT-II screen terms)

ENG OVER TEMP P0217 ——X EC-329 MULTI CYL MISFIRE P0300 ——X EC-347 CYL 1 MISFIRE P0301 —— X EC-347 CYL 2 MISFIRE P0302 —— X EC-347 CYL 3 MISFIRE P0303 —— X EC-347 CYL 4 MISFIRE P0304 —— X EC-347 KNOCK SEN/CIRC-B1 P0325 ———EC-354 CKP SEN/CIRCUIT P0335 ——X EC-358 CMP SEN/CIRCUIT P0340 ——X EC-363 EGR SYSTEM P0400 X X X*2 EC-369 EGR VOL CONT/V CIR P0403 ——X EC-378 TW CATALYST SYS-B1 P0420 X X X*2 EC-385 TW CATALYST SYS-B2 P0430 X X X*2 EC-385 EVAP SMALL LEAK P0440 X X X*2 EC-389 PURG VOLUME CONT/V P0443 —— X EC-403 VENT CONTROL VALVE P0446 ——X EC-409

DTC*1 SRT code

Test value/ Test

limit

(GST only)

1st trip DTC*1 Reference page

EVAPO SYS PRES SEN P0450 —— X EC-416 EVAP GROSS LEAK P0455 — X X*2 EC-428 FUEL LV SE (SLOSH) P0460 —— X EC-441 FUEL LEVEL SENSOR P0461 ——X EC-445 FUEL LEVEL SEN/CIRC P0464 —— X EC-447 VEH SPEED SEN/CIRC P0500 ——X EC-451 IACV/AAC VLV/CIRC P0505 —— X EC-455 CLOSED TP SW/CIRC P0510 ——X EC-464 A/T COMM LINE P0600 ———EC-472 ECM (PCM) P0605 ——X EC-474 PNP SW/CIRC P0705 ——X AT-275 ATF TEMP SEN/CIRC P0710 ——X AT-280 VEH SPD SEN/CIR AT P0720 ——X AT-286 ENGINE SPEED SIG P0725 ——X AT-291 A/T 1ST GR FNCTN P0731 ——X AT-295 A/T 2ND GR FNCTN P0732 ——X AT-302 A/T 3RD GR FNCTN P0733 ——X AT-308

A/T 4TH GR FNCTN P0734 —— X AT-314 TCC SOLENOID/CIRC P0740 ——X AT-323 A/T TCC S/V FNCTN P0744 ——X AT-327 L/PRESS SOL/CIRC P0745 ——X AT-338

EC-97

IDX

ON BOARD DIAGNOSTIC SYSTEM

Emission-related Diagnostic Information (Cont’d)

DESCRIPTION

QG18DE (EXC CALIF CA)

Items

(CONSULT-II screen terms)

SFT SOL A/CIRC P0750 ——X AT-343 SFT SOL B/CIRC P0755 ——X AT-347 INT/V TIMING CONT P1110 ——X EC-476 INT TIM S/CIR-B1 P1140 ——X EC-518 THERMOSTAT FNCTN P1126 —— X EC-487 SWIRL CONT SOL/V P1130 ——X EC-489 CLOSED LOOP-B1 P1148 ——X EC-523 SWL CON VC SW/CIRC P1165 —— X EC-525 CLOSED LOOP-B2 P1168 ——X EC-523 ENG OVER TEMP P1217 ——X EC-532 IGN SIGNAL-PRIMARY P1320 ——X EC-549 CKP SEN COG P1336 ——X EC-560 EGR TEMP SEN/CIRC P1401 ——X EC-565 EGR SYSTEM P1402 X X X*2 EC-572 EVAP SMALL LEAK P1440 X X X*2 EC-580

DTC*1 SRT code

Test value/ Test

limit

(GST only)

1st trip DTC*1 Reference page

EVAP VERY SML LEAK P1441 X*3 X X*2 EC-582 PURG VOLUME CONT/V P1444 —— X EC-597 VENT CONTROL VALVE P1446 ——X EC-609 EVAP PURG FLOW/MON P1447 X X X*2 EC-617 VENT CONTROL VALVE P1448 ——X EC-629 FUEL LEVEL SEN/CIRC P1464 —— X EC-638 VC/V BYPASS/V P1490 —— X EC-641 VC CUT/V BYPASS/V P1491 —— X EC-647 A/T DIAG COMM LINE P1605 —— X EC-657 TP SEN/CIRC A/T P1705 —— X AT-351 P-N POS SW/CIRCUIT P1706 —— X EC-659 O/R CLTCH SOL/CIRC P1760 ——X AT-359

*1: 1st trip DTC No. is the same as DTC No. *2: These are not displayed with GST. *3: SRT will not be set, if the self-diag results are NG.

HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION How to Erase DTC ( With CONSULT-II)

NIEC0031S06

NIEC0031S0601

NOTE: If the DTC is not for A/T related items (see EC-22), skip steps 2 through 4.

1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least 10 seconds and then turn it “ON” (engine stopped) again.

2. Turn CONSULT-II “ON” and touch “A/T”.

3. Touch “SELF-DIAG RESULTS”.

4. Touch “ERASE”. [The DTC in the PCM (A/T control part of PCM) will be erased.] Then touch “BACK” twice.

5. Touch “ENGINE”.

EC-98

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

6. Touch “SELF-DIAG RESULTS”.

7. Touch “ERASE”. (The DTC in the PCM will be erased.)

쐌 If DTCs are displayed for PCM (A/T control part and engine control part of PCM), they need to be erased

individually from the PCM and TCM (Transmission control module).

QG18DE (EXC CALIF CA)

SEF823YA

The emission related diagnostic information in the PCM can be erased by selecting “ERASE” in the “SELFDIAG RESULTS” mode with CONSULT-II.

How to Erase DTC ( With GST)

NOTE: If the DTC is not for A/T related items (see EC-22), skip step 2.

1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least 10 seconds and then turn it “ON” (engine stopped) again.

2. Perform “SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)” in AT section titled “TROUBLE DIAGNOSIS”, “Self-diagnosis”. (The engine warm-up step can be skipped when performing the diagnosis only to erase the DTC.)

3. Select Mode 4 with GST (Generic Scan Tool).

The emission related diagnostic information in the PCM can be erased by selecting Mode 4 with GST.

쐌 If the battery is disconnected, the emission-related diagnostic information will be lost after approx.

24 hours.

쐌 The following data are cleared when the PCM memory is erased.

1) Diagnostic trouble codes

2) 1st trip diagnostic trouble codes

3) Freeze frame data

4) 1st trip freeze frame data

5) System readiness test (SRT) codes

NIEC0031S0602

EC-99

IDX

ON BOARD DIAGNOSTIC SYSTEM

DESCRIPTION

Emission-related Diagnostic Information (Cont’d)

6) Test values

7) Others

Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all of the data listed above, are cleared from the PCM memory during work procedures.

QG18DE (EXC CALIF CA)

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM — NATS)

SEF543X

NIEC0031S07

쐌 If the security indicator lights up with the ignition switch in the “ON” position or “NATS MALFUNC-

TION” is displayed on “SELF-DIAG RESULTS” screen, perform self-diagnostic results mode with CONSULT-IIusing NATS program card. Refer to EL-306, “NVIS (NISSAN VehicleImmobilizer System — NATS)”.

쐌 Confirm no self-diagnostic results of NVIS (NATS) are displayed before touching “ERASE” in

“SELF-DIAG RESULTS” mode with CONSULT-II.

쐌 When replacing PCM, initialization of NVIS (NATS) system and registration of all NVIS (NATS) igni-

tion key IDs must be carried out with CONSULT-II using NATS program card. Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of NVIS (NATS) initialization and NVIS (NATS) ignition key ID registration, refer to CONSULT-II OPERATION MANUAL IVIS/NVIS.

Malfunction Indicator Lamp (MIL)

DESCRIPTION

SEF217U

The MIL is located on the instrument panel.

1. The MIL will light up when the ignition switch is turned ON without the engine running. This is a bulb check.

쐌 If the MIL does not light up, refer to EL-105, “WARNING LAMPS” or see EC-698.

2. When the engine is started, the MIL should go off. If the MIL remains on, the on board diagnostic system has detected an engine system malfunction.

NIEC0032

EC-100

Nissan Sentra Emission Control System EC 2000 Owner's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Alphabetical & P No. Index for DTC

QG18DE (EXC CALIF CA)

PRECAUTIONS

Precautions for On Board Diagnostic (OBD) System of Engine and A/T

PRECAUTIONS

Wiring Diagrams and Trouble Diagnosis

Special Service Tools

PREPARATION

Commercial Service Tools

Engine Control Component Parts Location

Circuit Diagram

System Diagram

Vacuum Hose Drawing

System Chart

Multiport Fuel Injection (MFI) System

Distributor Ignition (DI) System

Air Conditioning Cut Control

Fuel Cut Control (at no load & high engine speed)

Evaporative Emission System

Positive Crankcase Ventilation

BASIC SERVICE PROCEDURE

Fuel Pressure Release

Fuel Pressure Check

Fuel Pressure Regulator Check

Injector

How to Check Idle Speed and Ignition Timing

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment

Idle Air Volume Learning

Introduction

Two Trip Detection Logic

Emission-related Diagnostic Information

Malfunction Indicator Lamp (MIL)