Nissan Altima L32. Manual - part 1535

WCS-6

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

WARNING CHIME SYSTEM : Component Description

INFOID:0000000004204213

LIGHT REMINDER WARNING CHIME
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, 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

• 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

• Door switch LH is OFF

Unit

Description

Combination meter

• Judges whether the parking brake is released using the vehicle speed signal and the parking 

brake switch signal, and sounds the buzzer if necessary. 

• Receives the seat belt buckle switch signal from the seat belt buckle switch and transmits 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.

ABS actuator and electric unit 
(control unit)

Transmits the vehicle speed signal to combination meter with CAN communication line.

Seat belt buckle switch LH

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

Combination switch
(Lighting switch)

Transmits the lighting switch position signal to BCM.

Door switch LH

Transmits the door switch signal to BCM.

Parking brake switch

Transmits parking brake signal to combination meter.

AWNIA0292GB

WCS

WARNING CHIME SYSTEM

WCS-7

< FUNCTION DIAGNOSIS >

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LIGHT REMINDER WARNING CHIME : Component Parts Location

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LIGHT REMINDER WARNING CHIME : Component Description

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ALNIA1068ZZ

1.

Combination meter M24

2.

Combination switch (lighting switch) 
M28

3.

Seat belt buckle switch LH B202

4.

Door switch LH B8

5.

BCM M16, M17, M18, M19 (view with 
instrument panel removed)

6.

ABS actuator and electric unit (control 
unit) E26

7.

Parking brake switch M73 (sedan with 
M/T or coupe) (view with center con-
sole removed)

8.

Parking brake switch E35 (sedan with 
CVT) [view with instrument panel low-
er cover (LH) removed]

Unit

Description

Combination meter

Receives a buzzer output signal from BCM via CAN communication line and sounds the buzzer.

BCM

Judges the light warning conditions from the signals provided by various switches and transmits a 
buzzer output signal to the combination meter via CAN communication line if necessary.

WCS-8

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

SEAT BELT WARNING CHIME
SEAT BELT WARNING CHIME : System Diagram

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SEAT BELT WARNING CHIME : System Description

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DESCRIPTION

With ignition switch turned ON and driver seat belt unfastened, seat belt warning chime will sound for approxi-

mately 6 seconds.

• BCM receives seat belt buckle switch signal from combination meter with CAN communication line.

• BCM detects ignition switch turned ON and seat belt buckle switch LH ON. And then transmits buzzer output

signal (seat belt warning chime) to combination meter with CAN communication line.

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

WARNING OPERATION CONDITIONS

If all of the following conditions are fulfilled

• Ignition switch OFF

→ON

• Seat buckle switch LH is ON (driver seat belt not fastened)

WARNING CANCEL CONDITIONS

Cancels the warning if any of the following conditions is fulfilled.

• Ignition switch OFF

• Seat buckle switch LH is OFF (driver seat belt fastened)

• 90 seconds have passed since the start of the warning

Combination switch
(Lighting switch)

Transmits the lighting switch position signal to BCM.

Door switch LH

Transmits the door switch signal to BCM.

Unit

Description

LKIA0878E

WCS

WARNING CHIME SYSTEM

WCS-9

< FUNCTION DIAGNOSIS >

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SEAT BELT WARNING CHIME : Component Parts Location

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SEAT BELT WARNING CHIME : Component Description

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ALNIA1068ZZ

1.

Combination meter M24

2.

Combination switch (lighting switch) 
M28

3.

Seat belt buckle switch LH B202

4.

Door switch LH B8

5.

BCM M16, M17, M18, M19 (view with 
instrument panel removed)

6.

ABS actuator and electric unit (control 
unit) E26

7.

Parking brake switch M73 (sedan with 
M/T or coupe) (view with center con-
sole removed)

8.

Parking brake switch E35 (sedan with 
CVT) [view with instrument panel low-
er cover (LH) removed]

Unit

Description

Combination meter

• Receives the seat belt buckle switch signal from the seat belt buckle switch and transmits it to 

BCM via CAN communication line.

• Receives a buzzer output signal from BCM via CAN communication line and sounds the buzzer.