Infiniti M35/M45 Y50. Manual - part 848

HOW TO USE THIS SECTION

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HOW TO USE THIS SECTION

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Caution

NKS004FN

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This section describes information specific to a vehicle, sheets for trouble diagnosis, and inspection pro-
cedures.

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For trouble diagnosis procedure, refer to 

LAN-17, "Trouble Diagnosis Procedure"

 .

Abbreviation List

NKS004FO

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

Abbreviation

Unit name

SELECT SYSTEM

(CONSULT-II)

CAN DIAG SUPPORT MNTR

(CONSULT-II)

4WD

AWD control unit

ALL MODE AWD/4WD

AWD/4WD

ABS

ABS actuator and electric unit (control unit)

ABS

VDC/TCS/ABS

ADP

Driver seat control unit

AUTO DRIVE POS.

–

AFS

AFS control unit

ADAPTIVE LIGHT

AFS

AV

NAVI control unit

MULTI AV

MULTI AV

DISPLAY

AV control unit

MULTI AV

DISPLAY

BCM

BCM

BCM

BCM/SEC

DLC

Data link connector

–

–

ECM

ECM

ENGINE

ECM

ICC

ICC sensor integrated unit

ICC

ICC

ICC/e4WD

I-KEY

Intelligent Key unit

INTELLIGENT KEY

I-KEY

IPDM-E

IPDM E/R

IPDM E/R

IPDM E/R

M&A

Unified meter and A/C amp.

METER A/C AMP

METER/M&A

PSB

Pre-crash seat belt control unit

PRECRASH SEATBELT

–

RAS

RAS control unit

RAS/HICAS

RAS C/U

STRG

Steering angle sensor

–

STRG

TCM

TCM

A/T

TCM

TPMS

Low tire pressure warning control unit

AIR PRESSURE MONITOR

TIRE-P

LANE

LDW camera unit

LDW

–

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PRECAUTIONS

PRECAUTIONS

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Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT 
BELT PRE-TENSIONER”

NKS004HN

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:

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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 per-
formed by an authorized NISSAN/INFINITI dealer.

●

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 SRS section.

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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
harness connectors.

Precautions When Using CONSULT-II

NKS004HK

Use CONSULT-II CONVERTER when connecting CONSULT-II to data link connector.

CAUTION:

CAN communication does not function properly if CONSULT-II is used without connecting CONSULT-II
CONVERTER.

Precautions for Trouble Diagnosis

NKS004HL

CAUTION:

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Never apply 7.0 V or more to the measurement terminal.

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

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Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when
checking the harness. 

Precautions for Harness Repair

NKS004HM

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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

PRECAUTIONS

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Bypass connection is never allowed at the repaired area.

NOTE:
Bypass connection may cause CAN communication error. The
spliced wire becomes separated and the characteristics of
twisted line are lost. 

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Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communi-
cation line.

SKIB8767E

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TROUBLE DIAGNOSIS

TROUBLE DIAGNOSIS

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CAN Diagnostic Support Monitor

NKS004FT

Use “CAN DIAG SUPPORT MNTR” for detecting the root cause.

MONITOR ITEM LIST (CONSULT-II)
ECM

0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF

→

ON)

*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.

AWD control unit

NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.

SELECT SYS-

TEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRSNT

PAST

PRSNT

PAST

ENGINE

TRANSMIT DIAG

Signal transmission status

OK

OK

or

1 – 39

*

UNKWN

0

VDC/TCS/ABS

Signal receiving status from the ABS actu-
ator and electric unit (control unit)

METER/M&A

Signal receiving status from the unified 
meter and A/C amp.

BCM/SEC

Signal receiving status from the BCM

ICC

Signal receiving status from the ICC sen-
sor integrated unit

HVAC

Not used even though indicated

TCM

Signal receiving status from the TCM

OK

OK

or

1 – 39

*

UNKWN

0

EPS

Not used even though indicated

IPDM E/R

Signal receiving status from the IPDM E/R

OK

OK

or

1 – 39

*

UNKWN

0

e4WD

Not used even though indicated

AWD/4WD

Signal receiving status from the AWD con-
trol unit

OK

OK

or

1 – 39

*

UNKWN

0

SELECT SYS-

TEM

CAN DIAG SUP-

PORT MNTR

Description

Normal

Error

PRSNT

ALL MODE AWD/
4WD

INITIAL DIAG

Status of CAN controller

OK

NG

TRANSMIT DIAG

Signal transmission status

UNKWN

VDC/TCS/ABS

Signal receiving status from the ABS actuator and electric unit 
(control unit)

ECM

Signal receiving status from the ECM

TCM

Not used even though indicated

METER/M&A

Signal receiving status from the unified meter and A/C amp.

OK

UNKWN