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Nissan Titan A60. Manual - part 335

EC-6

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

380

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

380

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

380

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

382

P1554 BATTERY CURRENT SENSOR ..........

384

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

384

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

384

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

384

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

385

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

386

P1564 ASCD STEERING SWITCH .................

388

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

388

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

388

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

388

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

388

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

390

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

392

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

392

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

392

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

392

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

393

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

396

P1574 ASCD VEHICLE SPEED SENSOR ......

397

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

397

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

397

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

397

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

397

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

399

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

399

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

399

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

399

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

399

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

401

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

402

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

402

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

402

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

402

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

402

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

405

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

405

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

405

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

405

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

405

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

408

P2118 THROTTLE CONTROL MOTOR ..........

409

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

409

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

409

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

409

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

409

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

410

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

411

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

411

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

411

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

411

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

412

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

413

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

413

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

413

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

413

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

413

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

415

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

416

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

416

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

416

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

416

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

416

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

419

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

420

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

420

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

420

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

420

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

420

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

423

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

424

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

424

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

424

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

424

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

425

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

427

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

428

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

428

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

428

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

428

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

429

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

434

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

434

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

434

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

437

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

438

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

438

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

438

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

439

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

439

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

439

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

441

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

441

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

441

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

443

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

443

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

443

EC-7

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

444

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

446

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

446

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

446

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

452

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

453

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

453

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

453

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

456

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

458

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

458

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

458

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

461

POSITIVE CRANKCASE VENTILATION ........

463

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

463

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

463

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

465

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

465

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

465

SYMPTOM DIAGNOSIS ............................

468

ENGINE CONTROL SYSTEM SYMPTOMS ....

468

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

468

NORMAL OPERATING CONDITION ...............

472

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

472

PERIODIC MAINTENANCE .......................

473

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

473

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

473

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

475

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

475

REMOVAL AND INSTALLATION .............

477

INTAKE VALVE TIMING CONTROL ..............

477

Intake Valve Timing Control Solenoid Valve (LH) ..

477

Intake Valve Timing Control Solenoid Valve (RH) ..

477

Intake Valve Timing Control Position Sensor (LH) ..

478

Intake Valve Timing Control Position Sensor (RH) ..

478

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

478

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

480

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

480

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

480

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

480

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

480

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

480

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

480

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

480

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

480

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

481

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

481

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

481

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

481

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

481

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

481

EC-8

< PRECAUTION >

[VK56DE]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000006158952

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along

with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain

types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS

system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front

air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SRS and SB section of this Service Man-

ual.

WARNING:

• 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 must be performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SRS section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

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

INFOID:0000000006158953

The ECM 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:

• Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any repair

or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will

cause the MIL to light up.

• 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.)

• Certain systems and components, especially those related to OBD, may use a new style slide-lock-

ing type harness connector. For description and how to disconnect, refer to

PG-67, "Description"

• 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.

• 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 EVAP system or fuel injection system,

etc.

• Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and

TCM (Transmission control module) before returning the vehicle to the customer.

Precaution

INFOID:0000000006158954

• Always use a 12 volt battery as power source.

• Do not attempt to disconnect battery cables while engine is

running.

• Before connecting or disconnecting the ECM harness con-

nector, turn ignition switch OFF and disconnect negative bat-

tery cable. Failure to do so may damage the ECM because

battery voltage is applied to ECM even if ignition switch is

turned OFF.

• Before removing parts, turn ignition switch OFF and then dis-

connect negative battery cable.

SEF289H

PRECAUTIONS

EC-9

< PRECAUTION >

[VK56DE]

• Do not disassemble ECM.

• If a battery cable is disconnected, the memory will return to

the ECM value.

The ECM will now start to self-control at its initial value.

Engine operation can vary slightly when the terminal is dis-

connected. However, this is not an indication of a malfunc-

tion. Do not replace parts because of a slight variation.

• If the battery is disconnected, the following emission-related

diagnostic information will be lost within 24 hours.

- Diagnostic trouble codes

- 1st trip diagnostic trouble codes

- Freeze frame data

- 1st trip freeze frame data

- System readiness test (SRT) codes

- Test values

- <Flexible Fuel Vehicle>

Presumed ethanol mixture ratio

• When connecting ECM harness connector, fasten it securely

with a lever as far as it will go as shown in the figure.

• When connecting or disconnecting pin connectors into or

from ECM, take care not to damage pin terminals (bend or

break).

Make sure that there are not any bends or breaks on ECM pin

terminal, when connecting pin connectors.

• Securely connect ECM harness connectors.

A poor connection can cause an extremely high (surge) volt-

age to develop in coil and condenser, thus resulting in dam-

age to ICs.

• Keep engine control system harness at least 10 cm (4 in) away

from adjacent harness, to prevent engine control system mal-

functions due to receiving external noise, degraded operation

of ICs, etc.

• Keep engine control system parts and harness dry.

• Before replacing ECM, perform ECM Terminals and Reference

Value inspection and make sure ECM functions properly.

Refer to

EC-61, "ECM Terminal and Reference Value"

• Handle mass air flow sensor carefully to avoid damage.

• Do not disassemble mass air flow sensor.

• Do not clean mass air flow sensor with any type of detergent.

• Do not disassemble electric throttle control actuator.

• Even a slight leak in the air intake system can cause serious

incidents.

• Do not shock or jar the camshaft position sensor (PHASE),

crankshaft position sensor (POS).

PBIB1164E

BBIA0387E

PBIB0090E

MEF040D

Content .. 333 334 335 336 ..