Nissan Pathfinder (2011 year). Instruction — part 244

EC-6

Diagnosis Procedure . . . . . . . . . . . .

352

P1800 VIAS CONTROL SOLENOID VALVE 1 .

353

Component Description . . . . . . . . . . .

353

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

353

DTC Confirmation Procedure . . . . . . . .

353

Diagnosis Procedure . . . . . . . . . . . .

353

Component Inspection . . . . . . . . . . ...

354

P1805 BRAKE SWITCH . . . . . . . . ..

356

Description . . . . . . . . . . . . . . . .

356

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

356

DTC Confirmation Procedure . . . . . . . .

356

Diagnosis Procedure . . . . . . . . . . . .

356

Component Inspection . . . . . . . . . . ...

358

P2100, P2103 THROTTLE CONTROL MO-
TOR RELAY . . . . . . . . . . . . . .

359

Component Description . . . . . . . . . . .

359

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

359

DTC Confirmation Procedure . . . . . . . .

359

Diagnosis Procedure . . . . . . . . . . . .

359

P2101 ELECTRIC THROTTLE CONTROL
FUNCTION . . . . . . . . . . . . . ...

362

Description . . . . . . . . . . . . . . . .

362

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

362

DTC Confirmation Procedure . . . . . . . .

362

Diagnosis Procedure . . . . . . . . . . . .

362

Component Inspection . . . . . . . . . . ...

365

P2118 THROTTLE CONTROL MOTOR . . ..

366

Component Description . . . . . . . . . . .

366

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

366

DTC Confirmation Procedure . . . . . . . .

366

Diagnosis Procedure . . . . . . . . . . . .

366

Component Inspection . . . . . . . . . . ...

367

P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR . . . . . . . . . . . . . .

368

Component Description . . . . . . . . . . .

368

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

368

DTC Confirmation Procedure . . . . . . . .

368

Diagnosis Procedure . . . . . . . . . . . .

369

P2122, P2123 APP SENSOR . . . . . . ..

370

Component Description . . . . . . . . . . .

370

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

370

DTC Confirmation Procedure . . . . . . . .

370

Diagnosis Procedure . . . . . . . . . . . .

371

Component Inspection . . . . . . . . . . ...

372

P2127, P2128 APP SENSOR . . . . . . ..

373

Component Description . . . . . . . . . . .

373

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

373

DTC Confirmation Procedure . . . . . . . .

373

Diagnosis Procedure . . . . . . . . . . . .

373

Component Inspection . . . . . . . . . . ...

375

P2135 TP SENSOR . . . . . . . . . . .

377

Component Description . . . . . . . . . . .

377

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

377

DTC Confirmation Procedure . . . . . . . .

377

Diagnosis Procedure . . . . . . . . . . . .

377

Component Inspection . . . . . . . . . . ..

380

P2138 APP SENSOR . . . . . . . . . ...

381

Component Description . . . . . . . . . .

381

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

381

DTC Confirmation Procedure . . . . . . . .

381

Diagnosis Procedure . . . . . . . . . . . .

382

Component Inspection . . . . . . . . . . ..

384

P2A00, P2A03 A/F SENSOR 1 . . . . . .

385

Component Description . . . . . . . . . .

385

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

385

DTC Confirmation Procedure . . . . . . . .

385

Diagnosis Procedure . . . . . . . . . . . .

386

ASCD BRAKE SWITCH . . . . . . . . ...

390

Component Description . . . . . . . . . .

390

Diagnosis Procedure . . . . . . . . . . . .

390

Component Inspection . . . . . . . . . . ..

393

ASCD INDICATOR . . . . . . . . . . ...

394

Component Description . . . . . . . . . .

394

Diagnosis Procedure . . . . . . . . . . . .

394

COOLING FAN . . . . . . . . . . . . .

395

Description . . . . . . . . . . . . . . .

395

Diagnosis Procedure . . . . . . . . . . . .

395

Component Inspection . . . . . . . . . . ..

396

ELECTRICAL LOAD SIGNAL . . . . . . ..

397

Description . . . . . . . . . . . . . . .

397

Diagnosis Procedure . . . . . . . . . . . .

397

FUEL INJECTOR . . . . . . . . . . . ..

399

Component Description . . . . . . . . . .

399

Diagnosis Procedure . . . . . . . . . . . .

399

Component Inspection . . . . . . . . . . ..

402

FUEL PUMP . . . . . . . . . . . . . .

403

Description . . . . . . . . . . . . . . .

403

Diagnosis Procedure . . . . . . . . . . . .

403

Component Inspection . . . . . . . . . . ..

406

IGNITION SIGNAL . . . . . . . . . . .

407

Component Description . . . . . . . . . .

407

Diagnosis Procedure . . . . . . . . . . . .

407

Component Inspection . . . . . . . . . . ..

410

ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) . . . . . . . . . . . . . .

413

System Description . . . . . . . . . . . ...

413

Diagnosis Procedure . . . . . . . . . . . .

413

Component Inspection . . . . . . . . . . ..

416

POSITIVE CRANKCASE VENTILATION . . .

418

Description . . . . . . . . . . . . . . .

418

Component Inspection . . . . . . . . . . ..

418

REFRIGERANT PRESSURE SENSOR . . ...

420

2011 Pathfinder

EC-7

C

D

E

F

G

H

I

J

K

L

M

EC

A

N

O

P

Component Description . . . . . . . . . . .

420

Diagnosis Procedure . . . . . . . . . . . .

420

VIAS . . . . . . . . . . . . . . . . ..

423

Diagnosis Procedure . . . . . . . . . . . .

423

Component Inspection . . . . . . . . . . ..

425

ECU DIAGNOSIS INFORMATION . . .

427

ECM . . . . . . . . . . . . . . . . ..

427

CONSULT-III Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

427

ECM Harness Connector Terminal Layout . . ...

430

ECM Terminal and Reference Value . . . . .

430

Fail-Safe Chart . . . . . . . . . . . . . ..

438

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

440

DTC Index . . . . . . . . . . . . . . . .

441

Test Value and Test Limit . . . . . . . . . .

445

WIRING DIAGRAM . . . . . . . . .

452

ENGINE CONTROL SYSTEM . . . . . . ..

452

Wiring Diagram . . . . . . . . . . . . . .

452

SYMPTOM DIAGNOSIS . . . . . . .

472

ENGINE CONTROL SYSTEM SYMPTOMS .

472

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

472

NORMAL OPERATING CONDITION . . . ...

476

Fuel Cut Control (at No Load and High Engine
Speed) . . . . . . . . . . . . . . . . ...

476

PRECAUTION . . . . . . . . . . .

477

PRECAUTIONS . . . . . . . . . . . .

477

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . ...

477

Precaution for Procedure without Cowl Top Cover ..

477

On Board Diagnosis (OBD) System of Engine and
A/T . . . . . . . . . . . . . . . . . . .

477

Precaution . . . . . . . . . . . . . . . .

478

PREPARATION . . . . . . . . . . .

482

PREPARATION . . . . . . . . . . . .

482

Special Service Tool . . . . . . . . . . . .

482

Commercial Service Tool . . . . . . . . . ..

483

PERIODIC MAINTENANCE . . . . . ...

484

FUEL PRESSURE . . . . . . . . . . .

484

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

484

EVAP LEAK CHECK . . . . . . . . . .

486

How to Detect Fuel Vapor Leakage . . . . . ..

486

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

487

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

487

Fuel Pressure . . . . . . . . . . . . . .

487

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

487

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

487

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

487

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

487

Engine Coolant Temperature Sensor . . . . .

487

Air Fuel Ratio (A/F) Sensor 1 Heater . . . . . .

487

Heated Oxygen sensor 2 Heater . . . . . . ...

488

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

488

Camshaft Position Sensor (PHASE) . . . . . .

488

Throttle Control Motor . . . . . . . . . . .

488

Fuel Injector . . . . . . . . . . . . . . ...

488

Fuel Pump . . . . . . . . . . . . . . . .

488

VK56DE

PRECAUTION . . . . . . . . . . .

489

PRECAUTIONS . . . . . . . . . . . ...

489

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . ...

489

On Board Diagnosis (OBD) System of Engine and
A/T . . . . . . . . . . . . . . . . . . .

489

Precaution . . . . . . . . . . . . . . . .

489

PREPARATION . . . . . . . . . . .

493

PREPARATION . . . . . . . . . . . ...

493

Special Service Tool . . . . . . . . . . . ..

493

Commercial Service Tool . . . . . . . . . ..

493

SYSTEM DESCRIPTION . . . . . . ...

495

ENGINE CONTROL SYSTEM . . . . . .

495

System Diagram . . . . . . . . . . . . .

495

Engine Control Component Parts Location . . ...

496

MULTIPORT FUEL INJECTION SYSTEM . .

503

System Description . . . . . . . . . . . .

503

ELECTRIC IGNITION SYSTEM . . . . . ..

506

System Description . . . . . . . . . . . .

506

AIR CONDITIONING CUT CONTROL . . .

507

Input/Output Signal Chart . . . . . . . . . ..

507

System Description . . . . . . . . . . . .

507

AUTOMATIC SPEED CONTROL DEVICE
(ASCD) . . . . . . . . . . . . . . .

508

System Description . . . . . . . . . . . .

508

Component Description . . . . . . . . . . .

509

CAN COMMUNICATION . . . . . . . . .

510

System Description . . . . . . . . . . . .

510

COOLING FAN CONTROL . . . . . . . .

511

Description . . . . . . . . . . . . . . . .

511

EVAPORATIVE EMISSION SYSTEM . . . .

512

2011 Pathfinder

EC-8

Description . . . . . . . . . . . . . . . .

512

INTAKE VALVE TIMING CONTROL . . . ...

515

Description . . . . . . . . . . . . . . . .

515

FUEL FILLER CAP WARNING SYSTEM . ...

516

System Diagram . . . . . . . . . . . . ...

516

System Description . . . . . . . . . . . .

516

ON BOARD DIAGNOSTIC (OBD) SYSTEM ...

518

Diagnosis Description . . . . . . . . . . .

518

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

518

DIAGNOSIS SYSTEM (ECM) . . . . . . ..

519

DIAGNOSIS DESCRIPTION . . . . . . . . .

519

DIAGNOSIS DESCRIPTION : 1st Trip Detection
Logic and Two Trip Detection Logic . . . . . ..

519

DIAGNOSIS DESCRIPTION : DTC and Freeze
Frame Data . . . . . . . . . . . . . . .

519

DIAGNOSIS DESCRIPTION : Counter System .

520

DIAGNOSIS DESCRIPTION : Driving Pattern . ..

525

DIAGNOSIS DESCRIPTION : System Readiness
Test (SRT) Code . . . . . . . . . . . . ...

525

DIAGNOSIS DESCRIPTION : Malfunction Indica-
tor Lamp (MIL) . . . . . . . . . . . . . ...

527

On Board Diagnosis Function . . . . . . . .

527

CONSULT-III Function . . . . . . . . . . ..

530

ECU DIAGNOSIS INFORMATION . . . .

538

ECM . . . . . . . . . . . . . . . . .

538

CONSULT-III Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

538

ECM Harness Connector Terminal Layout . . .

541

ECM Terminal and Reference Value . . . . . .

541

Fail-Safe Chart . . . . . . . . . . . . . ..

549

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

551

DTC Index . . . . . . . . . . . . . . . .

551

Test Value and Test Limit . . . . . . . . . ..

555

WIRING DIAGRAM . . . . . . . . .

563

ENGINE CONTROL SYSTEM . . . . . . .

563

Wiring Diagram . . . . . . . . . . . . . ..

563

BASIC INSPECTION . . . . . . . . ..

583

DIAGNOSIS AND REPAIR WORK FLOW . ..

583

Trouble Diagnosis Introduction . . . . . . . ..

583

INSPECTION AND ADJUSTMENT . . . . .

588

Basic Inspection . . . . . . . . . . . . .

588

Idle Speed and Ignition Timing Check . . . . ...

592

Procedure After Replacing ECM . . . . . . ...

592

VIN Registration . . . . . . . . . . . . .

592

Accelerator Pedal Released Position Learning . .

593

Throttle Valve Closed Position Learning . . . ...

593

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

593

HOW TO SET SRT CODE . . . . . . . ...

596

Description . . . . . . . . . . . . . . . .

596

SRT Set Driving Pattern . . . . . . . . . .

597

Work Procedure . . . . . . . . . . . . .

599

DTC/CIRCUIT DIAGNOSIS . . . . . ...

601

TROUBLE DIAGNOSIS - SPECIFICATION
VALUE . . . . . . . . . . . . . . . ..

601

Description . . . . . . . . . . . . . . .

601

Testing Condition . . . . . . . . . . . . ..

601

Inspection Procedure . . . . . . . . . . .

601

Diagnosis Procedure . . . . . . . . . . . .

602

POWER SUPPLY AND GROUND CIRCUIT .

609

Diagnosis Procedure . . . . . . . . . . . .

609

Ground Inspection . . . . . . . . . . . . .

612

U0101 CAN COMM CIRCUIT . . . . . . ...

613

Description . . . . . . . . . . . . . . .

613

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

613

DTC Confirmation Procedure . . . . . . . .

613

Diagnosis Procedure . . . . . . . . . . . .

613

U1001 CAN COMM CIRCUIT . . . . . . ...

614

Description . . . . . . . . . . . . . . .

614

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

614

DTC Confirmation Procedure . . . . . . . .

614

Diagnosis Procedure . . . . . . . . . . . .

614

P0011, P0021 IVT CONTROL . . . . . . ..

615

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

615

DTC Confirmation Procedure . . . . . . . .

615

Diagnosis Procedure . . . . . . . . . . . .

616

Component Inspection . . . . . . . . . . ..

620

P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER . . . . . . . . . . . . . . ...

622

Description . . . . . . . . . . . . . . .

622

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

622

DTC Confirmation Procedure . . . . . . . .

622

Diagnosis Procedure . . . . . . . . . . . .

622

Component Inspection . . . . . . . . . . ..

624

P0037, P0038, P0057, P0058 HO2S2 HEAT-
ER . . . . . . . . . . . . . . . . . .

625

Description . . . . . . . . . . . . . . .

625

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

625

DTC Confirmation Procedure . . . . . . . .

625

Diagnosis Procedure . . . . . . . . . . . .

626

Component Inspection . . . . . . . . . . ..

627

P0075, P0081 IVT CONTROL SOLENOID
VALVE . . . . . . . . . . . . . . . ..

629

Component Description . . . . . . . . . .

629

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

629

DTC Confirmation Procedure . . . . . . . .

629

Diagnosis Procedure . . . . . . . . . . . .

629

Component Inspection . . . . . . . . . . ..

630

P0101 MAF SENSOR . . . . . . . . . ...

632

Component Description . . . . . . . . . .

632

DTC Logic . . . . . . . . . . . . . . . .

632

2011 Pathfinder

EC-9

C

D

E

F

G

H

I

J

K

L

M

EC

A

N

O

P

Diagnosis Procedure . . . . . . . . . . . .

633

Component Inspection . . . . . . . . . . ..

634

P0102, P0103 MAF SENSOR . . . . . . ..

636

Component Description . . . . . . . . . . .

636

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

636

DTC Confirmation Procedure . . . . . . . .

636

Diagnosis Procedure . . . . . . . . . . . .

637

Component Inspection . . . . . . . . . . ..

638

P0111 IAT SENSOR . . . . . . . . . . .

641

DTC Logic . . . . . . . . . . . . . . . .

641

Component Function Check . . . . . . . . ..

642

Diagnosis Procedure . . . . . . . . . . . .

642

Component Inspection . . . . . . . . . . ..

642

P0112, P0113 IAT SENSOR . . . . . . .

643

Component Description . . . . . . . . . . .

643

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

643

DTC Confirmation Procedure . . . . . . . .

643

Diagnosis Procedure . . . . . . . . . . . .

643

Component Inspection . . . . . . . . . . ..

645

P0116 ECT SENSOR . . . . . . . . . ...

646

Component Description . . . . . . . . . . .

646

DTC Logic . . . . . . . . . . . . . . . .

646

Component Function Check . . . . . . . . ..

647

Diagnosis Procedure . . . . . . . . . . . .

648

Component Inspection . . . . . . . . . . ..

648

P0117, P0118 ECT SENSOR . . . . . . ...

649

Component Description . . . . . . . . . . .

649

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

649

DTC Confirmation Procedure . . . . . . . .

650

Diagnosis Procedure . . . . . . . . . . . .

650

Component Inspection . . . . . . . . . . ..

651

P0122, P0123 TP SENSOR . . . . . . . .

653

Component Description . . . . . . . . . . .

653

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

653

DTC Confirmation Procedure . . . . . . . .

653

Diagnosis Procedure . . . . . . . . . . . .

653

Component Inspection . . . . . . . . . . ..

656

P0125 ECT SENSOR . . . . . . . . . ...

657

Component Description . . . . . . . . . . .

657

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

657

DTC Confirmation Procedure . . . . . . . .

657

Diagnosis Procedure . . . . . . . . . . . .

658

Component Inspection . . . . . . . . . . ..

658

P0127 IAT SENSOR . . . . . . . . . . .

660

Component Description . . . . . . . . . . .

660

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

660

DTC Confirmation Procedure . . . . . . . .

660

Diagnosis Procedure . . . . . . . . . . . .

661

Component Inspection . . . . . . . . . . ..

661

P0128 THERMOSTAT FUNCTION . . . . ..

663

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

663

DTC Confirmation Procedure . . . . . . . .

663

Diagnosis Procedure . . . . . . . . . . . .

663

Component Inspection . . . . . . . . . . ...

664

P0130, P0150 A/F SENSOR 1 . . . . . .

665

Component Description . . . . . . . . . . .

665

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

665

DTC Confirmation Procedure . . . . . . . .

665

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

666

Diagnosis Procedure . . . . . . . . . . . .

666

P0131, P0151 A/F SENSOR 1 . . . . . .

669

Component Description . . . . . . . . . . .

669

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

669

DTC Confirmation Procedure . . . . . . . .

669

Diagnosis Procedure . . . . . . . . . . . .

670

P0132, P0152 A/F SENSOR 1 . . . . . .

673

Component Description . . . . . . . . . . .

673

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

673

DTC Confirmation Procedure . . . . . . . .

673

Diagnosis Procedure . . . . . . . . . . . .

674

P0133, P0153 A/F SENSOR 1 . . . . . .

677

Component Description . . . . . . . . . . .

677

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

677

DTC Confirmation Procedure . . . . . . . .

677

Diagnosis Procedure . . . . . . . . . . . .

678

P0137, P0157 HO2S2 . . . . . . . . . .

683

Component Description . . . . . . . . . . .

683

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

683

DTC Confirmation Procedure . . . . . . . .

683

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

684

Diagnosis Procedure . . . . . . . . . . . .

684

Component Inspection . . . . . . . . . . ...

686

P0138, P0158 HO2S2 . . . . . . . . . .

688

Component Description . . . . . . . . . . .

688

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

688

DTC Confirmation Procedure . . . . . . . .

688

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

689

Diagnosis Procedure . . . . . . . . . . . .

690

Component Inspection . . . . . . . . . . ...

694

P0139, P0159 HO2S2 . . . . . . . . . .

696

Component Description . . . . . . . . . . .

696

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

696

DTC Confirmation Procedure . . . . . . . .

696

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

697

Diagnosis Procedure . . . . . . . . . . . .

697

Component Inspection . . . . . . . . . . ...

699

P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION . . . . . . . . . . . . . ..

701

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

701

DTC Confirmation Procedure . . . . . . . .

701

Diagnosis Procedure . . . . . . . . . . . .

703

P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION . . . . . . . . . . . . . ..

706

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

2011 Pathfinder

EC-10

DTC Confirmation Procedure . . . . . . . .

706

Diagnosis Procedure . . . . . . . . . . . .

707

P0181 FTT SENSOR . . . . . . . . . ...

711

Component Description . . . . . . . . . . .

711

DTC Logic . . . . . . . . . . . . . . . ..

711

Component Function Check . . . . . . . . ..

712

Diagnosis Procedure . . . . . . . . . . . .

713

Component Inspection . . . . . . . . . . ...

714

P0182, P0183 FTT SENSOR . . . . . . ...

715

Component Description . . . . . . . . . . .

715

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

715

DTC Confirmation Procedure . . . . . . . .

715

Diagnosis Procedure . . . . . . . . . . . .

715

Component Inspection . . . . . . . . . . ...

717

P0222, P0223 TP SENSOR . . . . . . . .

718

Component Description . . . . . . . . . . .

718

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

718

DTC Confirmation Procedure . . . . . . . .

718

Diagnosis Procedure . . . . . . . . . . . .

718

Component Inspection . . . . . . . . . . ...

721

P0300, P0301, P0302, P0303, P0304, P0305,
P0306, P0307, P0308 MISFIRE . . . . . ...

722

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

722

DTC Confirmation Procedure . . . . . . . .

722

Diagnosis Procedure . . . . . . . . . . . .

723

P0327, P0328, P0332, P0333 KS . . . . .

729

Component Description . . . . . . . . . . .

729

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

729

DTC Confirmation Procedure . . . . . . . .

729

Diagnosis Procedure . . . . . . . . . . . .

729

Component Inspection . . . . . . . . . . ...

731

P0335 CKP SENSOR (POS) . . . . . . ...

732

Component Description . . . . . . . . . . .

732

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

732

DTC Confirmation Procedure . . . . . . . .

732

Diagnosis Procedure . . . . . . . . . . . .

732

Component Inspection . . . . . . . . . . ...

734

P0340 CMP SENSOR (PHASE) . . . . . ..

736

Component Description . . . . . . . . . . .

736

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

736

DTC Confirmation Procedure . . . . . . . .

736

Diagnosis Procedure . . . . . . . . . . . .

737

Component Inspection . . . . . . . . . . ...

738

P0420, P0430 THREE WAY CATALYST
FUNCTION . . . . . . . . . . . . . ...

740

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

740

DTC Confirmation Procedure . . . . . . . .

740

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

741

Diagnosis Procedure . . . . . . . . . . . .

741

P0441 EVAP CONTROL SYSTEM . . . . ..

744

System Description . . . . . . . . . . . .

744

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

744

DTC Confirmation Procedure . . . . . . . .

744

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

745

Diagnosis Procedure . . . . . . . . . . . .

745

Component Inspection . . . . . . . . . . ..

748

P0442 EVAP CONTROL SYSTEM . . . . ..

749

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

749

DTC Confirmation Procedure . . . . . . . .

750

Diagnosis Procedure . . . . . . . . . . . .

750

Component Inspection . . . . . . . . . . ..

755

P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE . . . . . .

756

Description . . . . . . . . . . . . . . .

756

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

756

DTC Confirmation Procedure . . . . . . . .

757

Diagnosis Procedure . . . . . . . . . . . .

757

Component Inspection . . . . . . . . . . ..

760

P0444, P0445 EVAP CANISTER PURGE
VOLUME CONTROL SOLENOID VALVE . ...

761

Description . . . . . . . . . . . . . . .

761

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

761

DTC Confirmation Procedure . . . . . . . .

762

Diagnosis Procedure . . . . . . . . . . . .

762

Component Inspection . . . . . . . . . . ..

763

P0447 EVAP CANISTER VENT CONTROL
VALVE . . . . . . . . . . . . . . . ..

764

Component Description . . . . . . . . . .

764

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

764

DTC Confirmation Procedure . . . . . . . .

764

Diagnosis Procedure . . . . . . . . . . . .

764

Component Inspection . . . . . . . . . . ..

766

P0448 EVAP CANISTER VENT CONTROL
VALVE . . . . . . . . . . . . . . . ..

768

Component Description . . . . . . . . . .

768

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

768

DTC Confirmation Procedure . . . . . . . .

768

Diagnosis Procedure . . . . . . . . . . . .

769

Component Inspection . . . . . . . . . . ..

770

P0451 EVAP CONTROL SYSTEM PRES-
SURE SENSOR . . . . . . . . . . . .

773

Component Description . . . . . . . . . .

773

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

773

DTC Confirmation Procedure . . . . . . . .

773

Diagnosis Procedure . . . . . . . . . . . .

774

Component Inspection . . . . . . . . . . ..

775

P0452 EVAP CONTROL SYSTEM PRES-
SURE SENSOR . . . . . . . . . . . .

776

Component Description . . . . . . . . . .

776

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

776

DTC Confirmation Procedure . . . . . . . .

776

Diagnosis Procedure . . . . . . . . . . . .

777

Component Inspection . . . . . . . . . . ..

779

2011 Pathfinder

EC-11

C

D

E

F

G

H

I

J

K

L

M

EC

A

N

O

P

P0453 EVAP CONTROL SYSTEM PRES-
SURE SENSOR . . . . . . . . . . . .

780

Component Description . . . . . . . . . . .

780

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

780

DTC Confirmation Procedure . . . . . . . .

780

Diagnosis Procedure . . . . . . . . . . . .

781

Component Inspection . . . . . . . . . . ..

784

P0455 EVAP CONTROL SYSTEM . . . . ..

785

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

785

DTC Confirmation Procedure . . . . . . . .

785

Diagnosis Procedure . . . . . . . . . . . .

786

Component Inspection . . . . . . . . . . ..

791

P0456 EVAP CONTROL SYSTEM . . . . ..

792

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

792

DTC Confirmation Procedure . . . . . . . .

793

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

793

Diagnosis Procedure . . . . . . . . . . . .

794

Component Inspection . . . . . . . . . . ..

799

P0460 FUEL LEVEL SENSOR . . . . . .

800

Component Description . . . . . . . . . . .

800

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

800

DTC Confirmation Procedure . . . . . . . .

800

Diagnosis Procedure . . . . . . . . . . . .

800

P0461 FUEL LEVEL SENSOR . . . . . .

802

Component Description . . . . . . . . . . .

802

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

802

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

802

Diagnosis Procedure . . . . . . . . . . . .

803

P0462, P0463 FUEL LEVEL SENSOR . . .

804

Component Description . . . . . . . . . . .

804

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

804

DTC Confirmation Procedure . . . . . . . .

804

Diagnosis Procedure . . . . . . . . . . . .

804

P0500 VSS . . . . . . . . . . . . . ...

806

Description . . . . . . . . . . . . . . .

806

DTC Logic . . . . . . . . . . . . . . . .

806

Diagnosis Procedure . . . . . . . . . . . .

806

P0506 ISC SYSTEM . . . . . . . . . . .

808

Description . . . . . . . . . . . . . . .

808

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

808

DTC Confirmation Procedure . . . . . . . .

808

Diagnosis Procedure . . . . . . . . . . . .

808

P0507 ISC SYSTEM . . . . . . . . . . .

810

Description . . . . . . . . . . . . . . .

810

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

810

DTC Confirmation Procedure . . . . . . . .

810

Diagnosis Procedure . . . . . . . . . . . .

810

P0550 PSP SENSOR . . . . . . . . . ...

812

Component Description . . . . . . . . . . .

812

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

812

DTC Confirmation Procedure . . . . . . . .

812

Diagnosis Procedure . . . . . . . . . . . .

812

Component Inspection . . . . . . . . . . ...

814

P0603 ECM POWER SUPPLY . . . . . ...

815

Component Description . . . . . . . . . . .

815

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

815

DTC Confirmation Procedure . . . . . . . .

815

Diagnosis Procedure . . . . . . . . . . . .

815

P0605 ECM . . . . . . . . . . . . . .

817

Component Description . . . . . . . . . . .

817

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

817

DTC Confirmation Procedure . . . . . . . .

817

Diagnosis Procedure . . . . . . . . . . . .

818

P0607 ECM . . . . . . . . . . . . . .

819

Description . . . . . . . . . . . . . . . .

819

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

819

DTC Confirmation Procedure . . . . . . . .

819

Diagnosis Procedure . . . . . . . . . . . .

819

P0643 SENSOR POWER SUPPLY . . . .

820

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

820

DTC Confirmation Procedure . . . . . . . .

820

Diagnosis Procedure . . . . . . . . . . . .

820

P0850 PNP SWITCH . . . . . . . . . ...

823

Component Description . . . . . . . . . . .

823

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

823

DTC Confirmation Procedure . . . . . . . .

823

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

823

Diagnosis Procedure . . . . . . . . . . . .

824

P1140, P1145 IVT CONTROL POSITION
SENSOR . . . . . . . . . . . . . . ..

826

Component Description . . . . . . . . . . .

826

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

826

DTC Confirmation Procedure . . . . . . . .

826

Diagnosis Procedure . . . . . . . . . . . .

826

Component Inspection . . . . . . . . . . ...

829

P1148, P1168 CLOSED LOOP CONTROL .

830

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

830

P1211 TCS CONTROL UNIT . . . . . . ..

831

Description . . . . . . . . . . . . . . . .

831

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

831

DTC Confirmation Procedure . . . . . . . .

831

Diagnosis Procedure . . . . . . . . . . . .

831

P1212 TCS COMMUNICATION LINE . . . .

832

Description . . . . . . . . . . . . . . . .

832

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

832

DTC Confirmation Procedure . . . . . . . .

832

Diagnosis Procedure . . . . . . . . . . . .

832

P1217 ENGINE OVER TEMPERATURE . .

833

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

833

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

833

Diagnosis Procedure . . . . . . . . . . . .

834

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

835

2011 Pathfinder

EC-12

P1225 TP SENSOR . . . . . . . . . . .

837

Component Description . . . . . . . . . . .

837

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

837

DTC Confirmation Procedure . . . . . . . .

837

Diagnosis Procedure . . . . . . . . . . . .

837

P1226 TP SENSOR . . . . . . . . . . .

839

Component Description . . . . . . . . . . .

839

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

839

DTC Confirmation Procedure . . . . . . . .

839

Diagnosis Procedure . . . . . . . . . . . .

839

P1421 COLD START CONTROL . . . . .

841

Description . . . . . . . . . . . . . . . .

841

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

841

DTC Confirmation Procedure . . . . . . . .

841

Diagnosis Procedure . . . . . . . . . . . .

841

P1550 BATTERY CURRENT SENSOR . . ..

843

Component Description . . . . . . . . . . .

843

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

843

DTC Confirmation Procedure . . . . . . . .

843

Diagnosis Procedure . . . . . . . . . . . .

843

Component Inspection . . . . . . . . . . ...

845

P1551, P1552 BATTERY CURRENT SEN-
SOR . . . . . . . . . . . . . . . . ..

847

Component Description . . . . . . . . . . .

847

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

847

DTC Confirmation Procedure . . . . . . . .

847

Diagnosis Procedure . . . . . . . . . . . .

847

Component Inspection . . . . . . . . . . ...

849

P1553 BATTERY CURRENT SENSOR . . ..

851

Component Description . . . . . . . . . . .

851

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

851

DTC Confirmation Procedure . . . . . . . .

851

Diagnosis Procedure . . . . . . . . . . . .

851

Component Inspection . . . . . . . . . . ...

853

P1554 BATTERY CURRENT SENSOR . . ..

855

Component Description . . . . . . . . . . .

855

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

855

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

855

Diagnosis Procedure . . . . . . . . . . . .

856

Component Inspection . . . . . . . . . . ...

857

P1564 ASCD STEERING SWITCH . . . . .

859

Component Description . . . . . . . . . . .

859

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

859

DTC Confirmation Procedure . . . . . . . .

859

Diagnosis Procedure . . . . . . . . . . . .

859

Component Inspection . . . . . . . . . . ...

861

P1572 ASCD BRAKE SWITCH . . . . . ...

863

Component Description . . . . . . . . . . .

863

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

863

DTC Confirmation Procedure . . . . . . . .

863

Diagnosis Procedure . . . . . . . . . . . .

864

Component Inspection . . . . . . . . . . ...

867

P1805 BRAKE SWITCH . . . . . . . . ...

868

Description . . . . . . . . . . . . . . .

868

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

868

DTC Confirmation Procedure . . . . . . . .

868

Diagnosis Procedure . . . . . . . . . . . .

868

Component Inspection . . . . . . . . . . ..

870

P2100, P2103 THROTTLE CONTROL MO-
TOR RELAY . . . . . . . . . . . . . .

871

Component Description . . . . . . . . . .

871

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

871

DTC Confirmation Procedure . . . . . . . .

871

Diagnosis Procedure . . . . . . . . . . . .

871

P2101 ELECTRIC THROTTLE CONTROL
FUNCTION . . . . . . . . . . . . . .

874

Description . . . . . . . . . . . . . . .

874

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

874

DTC Confirmation Procedure . . . . . . . .

874

Diagnosis Procedure . . . . . . . . . . . .

874

Component Inspection . . . . . . . . . . ..

877

P2118 THROTTLE CONTROL MOTOR . . ..

878

Component Description . . . . . . . . . .

878

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

878

DTC Confirmation Procedure . . . . . . . .

878

Diagnosis Procedure . . . . . . . . . . . .

878

Component Inspection . . . . . . . . . . ..

879

P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR . . . . . . . . . . . . . ..

880

Component Description . . . . . . . . . .

880

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

880

DTC Confirmation Procedure . . . . . . . .

880

Diagnosis Procedure . . . . . . . . . . . .

881

P2122, P2123 APP SENSOR . . . . . . ...

882

Component Description . . . . . . . . . .

882

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

882

DTC Confirmation Procedure . . . . . . . .

882

Diagnosis Procedure . . . . . . . . . . . .

882

Component Inspection . . . . . . . . . . ..

884

P2127, P2128 APP SENSOR . . . . . . ...

885

Component Description . . . . . . . . . .

885

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

885

DTC Confirmation Procedure . . . . . . . .

885

Diagnosis Procedure . . . . . . . . . . . .

885

Component Inspection . . . . . . . . . . ..

888

P2135 TP SENSOR . . . . . . . . . . ..

889

Component Description . . . . . . . . . .

889

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

889

DTC Confirmation Procedure . . . . . . . .

889

Diagnosis Procedure . . . . . . . . . . . .

889

Component Inspection . . . . . . . . . . ..

892

P2138 APP SENSOR . . . . . . . . . ...

893

Component Description . . . . . . . . . .

893

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

893

2011 Pathfinder

EC-13

C

D

E

F

G

H

I

J

K

L

M

EC

A

N

O

P

DTC Confirmation Procedure . . . . . . . .

893

Diagnosis Procedure . . . . . . . . . . . .

893

Component Inspection . . . . . . . . . . ..

896

P2A00, P2A03 A/F SENSOR 1 . . . . . .

897

Component Description . . . . . . . . . . .

897

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

897

DTC Confirmation Procedure . . . . . . . .

897

Diagnosis Procedure . . . . . . . . . . . .

898

ASCD BRAKE SWITCH . . . . . . . . ...

903

Component Description . . . . . . . . . . .

903

Diagnosis Procedure . . . . . . . . . . . .

903

Component Inspection . . . . . . . . . . ..

904

ASCD INDICATOR . . . . . . . . . . ...

906

Component Description . . . . . . . . . . .

906

Diagnosis Procedure . . . . . . . . . . . .

906

COOLING FAN . . . . . . . . . . . . .

907

Description . . . . . . . . . . . . . . .

907

Diagnosis Procedure . . . . . . . . . . . .

907

Component Inspection . . . . . . . . . . ..

908

ELECTRICAL LOAD SIGNAL . . . . . . .

909

Description . . . . . . . . . . . . . . .

909

Diagnosis Procedure . . . . . . . . . . . .

909

FUEL INJECTOR . . . . . . . . . . . .

911

Component Description . . . . . . . . . . .

911

Diagnosis Procedure . . . . . . . . . . . .

911

Component Inspection . . . . . . . . . . ..

912

FUEL PUMP . . . . . . . . . . . . . .

914

Description . . . . . . . . . . . . . . .

914

Diagnosis Procedure . . . . . . . . . . . .

914

Component Inspection . . . . . . . . . . ..

916

IGNITION SIGNAL . . . . . . . . . . ...

917

Component Description . . . . . . . . . . .

917

Diagnosis Procedure . . . . . . . . . . . .

917

Component Inspection . . . . . . . . . . ..

920

MALFUNCTION INDICATOR LAMP . . . ...

922

Component Function Check . . . . . . . . ..

922

Diagnosis Procedure . . . . . . . . . . . .

922

ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) . . . . . . . . . . . . . .

923

System Description . . . . . . . . . . . .

923

Diagnosis Procedure . . . . . . . . . . . .

923

Component Inspection . . . . . . . . . . ...

926

POSITIVE CRANKCASE VENTILATION . ...

928

Description . . . . . . . . . . . . . . . .

928

Component Inspection . . . . . . . . . . ...

928

REFRIGERANT PRESSURE SENSOR . . ..

930

Component Description . . . . . . . . . . .

930

Diagnosis Procedure . . . . . . . . . . . .

930

SYMPTOM DIAGNOSIS . . . . . . .

933

ENGINE CONTROL SYSTEM SYMPTOMS ...

933

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

933

NORMAL OPERATING CONDITION . . . .

937

Fuel Cut Control (at No Load and High Engine
Speed) . . . . . . . . . . . . . . . . ...

937

PERIODIC MAINTENANCE . . . . . ..

938

FUEL PRESSURE . . . . . . . . . . ...

938

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

938

EVAP LEAK CHECK . . . . . . . . . ..

940

How to Detect EVAP Leakage . . . . . . . ...

940

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

942

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

942

Fuel Pressure . . . . . . . . . . . . . .

942

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

942

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

942

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

942

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

942

Engine Coolant Temperature Sensor . . . . .

942

A/F Sensor 1 Heater . . . . . . . . . . . ..

942

Heated Oxygen sensor 2 Heater . . . . . . ...

943

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

943

Camshaft Position Sensor (PHASE) . . . . . .

943

Throttle Control Motor . . . . . . . . . . .

943

Fuel Injector . . . . . . . . . . . . . . ...

943

Fuel Pump . . . . . . . . . . . . . . . .

943

2011 Pathfinder

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