Nissan Frontier. Manual — part 1302

WCS

DIAGNOSIS AND REPAIR WORKFLOW

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< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

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DETAILED FLOW

1.

OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain as much information as possible about the conditions and environment under

which the malfunction occurred.

>> GO TO 2

2.

CHECK SYMPTOM

• Check the symptom based on the information obtained from the customer.

• Check to see if any other malfunctions are present.

>> GO TO 3

3.

CHECK CONSULT SELF-DIAGNOSIS RESULTS

Connect CONSULT and perform “SELF-DIAGNOSIS”. Refer to

MWI-27, "CONSULT Function (METER/

M&A)"

.

Are self-diagnosis results normal?

YES

>> GO TO 4

NO

>> Repair or replace the malfunctioning parts, GO TO 5

4.

NARROW DOWN MALFUNCTIONING PARTS THROUGH SYMPTOM DIAGNOSIS

Perform symptom diagnosis and repair or replace the identified malfunctioning parts.

>> GO TO 5

5.

FINAL CHECK

Check that the warning buzzer in the combination meter operates normally.
Does it operate normally?

YES

>> Inspection End.

NO

>> GO TO 1

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< SYSTEM DESCRIPTION >

WARNING CHIME SYSTEM

SYSTEM DESCRIPTION

WARNING CHIME SYSTEM

WARNING CHIME SYSTEM
WARNING CHIME SYSTEM : System Diagram

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WARNING CHIME SYSTEM : System Description

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COMBINATION METER

• The buzzer for warning chime system is installed in the combination meter.

• The buzzer sounds when the combination meter receives a buzzer output signal from each unit.

BCM

BCM receives signals from various units and transmits a buzzer output signal to the combination meter with

CAN communication line if it judges that the warning buzzer should be activated.

BCM warning function list

AWNIA3292GB

Warning functions

Signal name

Light reminder warning chime

• Lighting switch position signal
• Front door switch LH signal

Seat belt warning chime

Seat belt buckle switch LH signal

Key warning chime

• Key switch signal
• Door switch signal

WCS

WARNING CHIME SYSTEM

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< SYSTEM DESCRIPTION >

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WARNING CHIME SYSTEM : Component Parts Location

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WARNING CHIME SYSTEM : Component Description

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LIGHT REMINDER WARNING CHIME

WKIA4988E

1.

Combination switch (lighting and turn
signal switch) M28

2.

Combination meter M24

3.

Key switch M27

4.

BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)

5.

Front door switch LH B8 (crew cab)

6.

Front door switch LH D213 (king cab)

7.

Seat belt buckle switch LH B12

Unit

Description

Combination meter

• Receives the seat belt buckle switch LH signal from the seat belt buckle switch LH and trans-

mits it to BCM with CAN communication line.

• Receives a buzzer output signal from BCM with CAN communication line.

BCM

Transmits signals provided by various units to the combination meter with CAN communication
line.

Key switch

Transmits key switch signal to BCM.

Seat belt buckle switch LH

Transmits a seat belt buckle switch LH signal to the combination meter.

Combination switch
(lighting and turn signal switch)

Transmits the lighting switch position signal to BCM.

Front door switch LH

Transmits the door switch signal to BCM.

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< SYSTEM DESCRIPTION >

WARNING CHIME SYSTEM

LIGHT REMINDER WARNING CHIME : System Diagram

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LIGHT REMINDER WARNING CHIME : System Description

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DESCRIPTION

With ignition switch in OFF or ACC position, driver door open, and lighting switch in 1ST or 2ND position, the

light warning chime will sound.

• BCM detects ignition switch in OFF or ACC position, front door switch LH ON, and lighting switch in 1ST or

2ND position. And then transmits buzzer output signal (light reminder warning chime) to combination meter

with CAN communication line.

• When combination meter receives buzzer output signal (light reminder warning chime), it sounds the buzzer.

WARNING OPERATION CONDITIONS

If all of the following conditions are fulfilled

• Lighting switch is at 1st or 2nd position

• Ignition switch is at OFF or ACC

• Front door switch LH is ON

WARNING CANCEL CONDITIONS

Warning is canceled if any of the following conditions is fulfilled.

• Lighting switch OFF

• Ignition switch ON

• Front door switch LH is OFF

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