Nissan Frontier. Manual — part 1312

WCS

WARNING CHIME SYSTEM

WCS-43

< WIRING DIAGRAM >

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ABNIA5553GB

WCS-44

< SYMPTOM DIAGNOSIS >

THE LIGHT REMINDER WARNING DOES NOT SOUND

SYMPTOM DIAGNOSIS

THE LIGHT REMINDER WARNING DOES NOT SOUND

Description

INFOID:0000000009478020

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

Diagnosis Procedure

INFOID:0000000009478021

1.

CHECK COMBINATION SWITCH (LIGHTING AND TURN SIGNAL SWITCH) OPERATION

Check that the headlamps operate normally by operating the combination switch (lighting and turn signal

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

DLK-29, "CREW CAB :

Component Function Check"

(Crew Cab) or

DLK-27, "KING CAB : Component Function Check"

(King Cab).

Is the inspection result normal?

YES

>> Replace the BCM. Refer to

BCS-49, "Removal and Installation"

.

NO

>> Refer to

DLK-29, "CREW CAB : Diagnosis Procedure"

(Crew Cab) or

DLK-27, "KING CAB : Diag-

nosis Procedure"

(King Cab).

WCS

THE SEAT BELT WARNING CONTINUES SOUNDING, OR DOES NOT SOUND

WCS-45

< SYMPTOM DIAGNOSIS >

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THE SEAT BELT WARNING CONTINUES SOUNDING, OR DOES NOT
SOUND

Description

INFOID:0000000009478022

• 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:0000000009478023

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

>> • If both light reminder warning and key warning do not sound, replace combination meter. Refer

to

MWI-90, "Removal and Installation"

.

• If the light reminder warning does not sound only, refert to

WCS-44, "Diagnosis Procedure"

.

• If the key warning does not sound only, refert to

WCS-46, "Diagnosis Procedure"

.

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-49, "Removal and Installation"

.

NO

>> GO TO 3

3.

CHECK SEAT BELT BUCKLE SWITCH LH CIRCUIT

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

WCS-20, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair harness or connector.

4.

CHECK SEAT BELT BUCKLE SWITCH LH

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

WCS-21, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace the combination meter. Refer to

MWI-90, "Removal and Installation"

.

NO

>> Replace the seat belt buckle switch LH. Refer to

SE-32, "Removal and Installation"

.

Seat belt fastened

: OFF

Seat belt not fastened

: ON

WCS-46

< SYMPTOM DIAGNOSIS >

THE KEY WARNING DOES NOT SOUND

THE KEY WARNING DOES NOT SOUND

Description

INFOID:0000000009478024

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

Diagnosis Procedure

INFOID:0000000009478025

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-90, "Removal and Installation"

.

2.

CHECK KEY SWITCH CIRCUIT

Perform inspection of the key switch circuit. Refer to

WCS-22, "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-23, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace the BCM. Refer to

BCS-49, "Removal and Installation"

.

NO

>> Replace the key switch.