Infiniti QX56 (JA60). Manual - part 1017

WCS-66

< SYMPTOM DIAGNOSIS >

THE LIGHT REMINDER WARNING DOES NOT SOUND

SYMPTOM DIAGNOSIS

THE LIGHT REMINDER WARNING DOES NOT SOUND

Description

INFOID:0000000005146175

Light reminder warning does not sound even though headlamp is illuminated.

Diagnosis Procedure

INFOID:0000000005146176

1.

CHECK COMBINATION SWITCH (LIGHTING SWITCH) OPERATION

Check that the headlamps operate normally by operating the combination switch (lighting switch).
Do they operate normally?

YES

>> GO TO 2

NO

>> Refer to 

EXL-4, "Work Flow"

.

2.

CHECK FRONT DOOR SWITCH LH SIGNAL CIRCUIT

Perform inspection of the front door switch LH signal circuit. Refer to 

DLK-71, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK FRONT DOOR SWITCH LH

Perform a unit inspection for the front door switch LH. Refer to 

DLK-71, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace the BCM. Refer to 

BCS-59, "Removal and Installation"

.

NO

>> Replace the front door switch LH.

WCS

THE SEAT BELT WARNING CONTINUES SOUNDING, OR DOES NOT SOUND

WCS-67

< SYMPTOM DIAGNOSIS >

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THE SEAT BELT WARNING CONTINUES SOUNDING, OR DOES NOT
SOUND

Description

INFOID:0000000005146177

• Seat belt warning does not sound even though driver seat belt is not fastened.

• Seat belt warning sounds even though driver seat belt is fastened.

Diagnosis Procedure

INFOID:0000000005146178

1.

CHECK WARNING CHIME OPERATION

1. With key removed from key switch and the front door LH open, turn lighting switch to 1st or 2nd position.

2. Return lighting switch to off position, and insert key into key switch.
Does warning chime sound for both steps?

YES

>> GO TO 2

NO

>> Replace combination meter. Refer to 

MWI-100, "Removal and Installation"

.

2.

CHECK SEAT BELT WARNING LAMP

1. Turn ignition switch ON.

2. Check the operation of the seat belt warning lamp in the combination meter.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-59, "Removal and Installation"

.

NO

>> GO TO 3

3.

CHECK SEAT BELT BUCKLE SWITCH CIRCUIT

Perform inspection of the seat belt buckle switch circuit. Refer to 

WCS-19, "Diagnosis Procedure"

. 

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair harness or connector.

4.

CHECK SEAT BELT BUCKLE SWITCH UNIT

Perform a unit inspection for the seat belt buckle switch. Refer to 

WCS-20, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace the combination meter. Refer to 

MWI-100, "Removal and Installation"

.

NO

>> Replace the seat belt buckle pre-tensioner assembly LH (seat belt buckle switch).

Seat belt fastened

: OFF

Seat belt not fastened

: ON

WCS-68

< SYMPTOM DIAGNOSIS >

THE KEY WARNING DOES NOT SOUND

THE KEY WARNING DOES NOT SOUND

Description

INFOID:0000000005146179

Key warning does not sound even though key is in ignition and front door LH is opened.

Diagnosis Procedure

INFOID:0000000005146180

1.

CHECK WARNING CHIME OPERATION

With key removed from the ignition and the front door LH open, turn the lighting switch to 1st or 2nd position.
Does warning chime sound?

YES

>> GO TO 2

NO

>> Replace combination meter. Refer to 

MWI-100, "Removal and Installation"

.

2.

CHECK KEY SWITCH CIRCUIT 

Perform inspection of the key switch circuit. Refer to 

WCS-21, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK KEY SWITCH

Perform a unit inspection for the key switch. Refer to 

WCS-22, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace the BCM. Refer to 

BCS-59, "Removal and Installation"

.

NO

>> Replace the key switch and ignition knob switch.

WCS

PRECAUTIONS

WCS-69

< PRECAUTION >

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PRECAUTION

PRECAUTIONS

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

INFOID:0000000005238466

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 3 minutes before performing any service.

Necessary for Steering Wheel Rotation After Battery Disconnect

INFOID:0000000005238467

NOTE:

• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both

battery cables.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

This vehicle is equipped with a push-button ignition switch and a steering lock unit.

If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.

If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure

below before starting the repair operation.

OPERATION PROCEDURE

1. Connect both battery cables.

NOTE:

Supply power using jumper cables if battery is discharged.

2. Carry the Intelligent Key or insert it to the key slot and turn the push-button ignition switch to ACC position.

(At this time, the steering lock will be released.)

3. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-

nected and the steering wheel can be turned.

4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn

the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering

wheel will lock when the push-button ignition switch is turned to LOCK position.)