Nissan Frontier. Manual - part 971

LAN-34

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

DIAGNOSIS AND REPAIR WORKFLOW

7. Perform the inspection procedure for the possible cause. Refer to “MALFUNCTION AREA CHART”.

Past Error — Short Circuit —

When the symptoms listed below exist, a short circuit of the CAN communication line is a possible cause.

PKID1224E

Item (CONSULT)

Indication

Inspection procedure

SELF-DIAG RESULTS

DTC of CAN communication is indicated in the past for most 
units.

Refer to “MALFUNCTION AREA 
CHART”.

CAN DIAG SUPPORT MNTR

Only on CAN DIAG SUPPORT MNTR (with PAST), “1 - 39” is in-
dicated on “PAST” of “TRANSMIT DIAG” and the reception item.

LAN

DIAGNOSIS AND REPAIR WORKFLOW

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< BASIC INSPECTION >

[CAN FUNDAMENTAL]

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JSMIA0822GB

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< HOW TO USE THIS MANUAL >

[CAN]

HOW TO USE THIS SECTION

HOW TO USE THIS MANUAL

HOW TO USE THIS SECTION

Caution

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• This section describes information peculiar to a vehicle, sheets for trouble diagnosis, and inspection proce-

dures.

• For trouble diagnosis procedure, refer to 

LAN-14, "Trouble Diagnosis Procedure"

.

Abbreviation List

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Abbreviation in CAN communication signal chart, and the diagnosis sheet are as per the following list.

Abbreviation

Unit name

SELECT SYSTEM

(CONSULT)

CAN DIAG SUPPORT MNTR

(CONSULT)

4WD

Transfer control unit

ALL MODE AWD/4WD

AWD/4WD

A-BAG

Air bag diagnosis sensor unit

AIR BAG

—

AV

AV control unit

MULTI AV

MULTI AV

ABS

ABS actuator and electric unit (control unit)

ABS

VDC/TCS/ABS

BCM

BCM

BCM

BCM/SEC

DIFF

Differential lock control unit

DIFF LOCK

DIFF LOCK

DLC

Data link connector

—

—

ECM

ECM

ENGINE

ECM

HVAC

Front air control

HVAC

HVAC

IPDM-E

IPDM E/R

IPDM E/R

IPDM E/R

M&A

Combination meter

METER/M&A

METER/M&A

STRG

Steering angle sensor

—

STRG

TCM

TCM

TRANSMISSION

TCM

LAN

PRECAUTIONS

LAN-37

< PRECAUTION >

[CAN]

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PRECAUTION

PRECAUTIONS

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

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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 SR 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 SR 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.

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

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT 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 three minutes before performing any service.

Precautions for Trouble Diagnosis

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CAUTION:

• Never apply 7.0 V or more to the measurement terminal.

• Use a tester with open terminal voltage of 7.0 V or less.

• Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when

checking the harness. 

Precautions for Harness Repair

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• Solder the repaired area and wrap tape around the soldered area.

NOTE:

A fray of twisted lines must be within 110 mm (4.33 in).

SKIB8766E