Nissan Titan. Manual

EC-5

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

345

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

345

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

345

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

345

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

347

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

347

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

347

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

347

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

349

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

349

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

349

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

349

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

349

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

351

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

351

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

351

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

351

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

351

P050A, P050B, P050E COLD START CON-
TROL ................................................................

353

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

353

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

353

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

354

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

355

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

355

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

355

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

355

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

355

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

357

P0603 ECM .......................................................

358

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

358

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

358

P0604 ECM .......................................................

359

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

359

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

359

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

360

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

360

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

360

P0606 ECM .......................................................

361

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

361

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

361

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

362

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

362

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

362

P060A ECM ......................................................

363

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

363

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

363

P060B ECM ......................................................

364

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

364

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

364

P0643 SENSOR POWER SUPPLY ................

365

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

365

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

365

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

365

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

368

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

368

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

368

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

368

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

368

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

369

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

371

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

371

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

371

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

371

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

371

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

374

P1148, P1168 CLOSED LOOP CONTROL ....

375

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

375

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

376

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

376

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

376

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

376

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

376

P1212 TCS COMMUNICATION LINE .............

377

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

377

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

377

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

377

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

377

P1217 ENGINE OVER TEMPERATURE ........

378

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

378

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

378

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

379

Main 13 Causes of Overheating ............................

380

P1220 FUEL PUMP CONTROL MODULE
(FPCM) ............................................................

381

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

381

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

381

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

381

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

382

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

384

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

386

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

386

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

386

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

386

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

386

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

388

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

388

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

388

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

388

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

388

EC-8

< PRECAUTION >

[VK56DE]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000009886484

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 AIR BAG” and “SEAT BELT” of this

Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that 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 “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness

connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with

a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing

serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

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

INFOID:0000000009886485

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-71, "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.

Nissan Titan. Manual - part 176