Infiniti QX56 (JA60). Manual - part 1002

WCS-6

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

LIGHT REMINDER WARNING CHIME
LIGHT REMINDER WARNING CHIME : System Diagram

INFOID:0000000005146138

LIGHT REMINDER WARNING CHIME : System Description

INFOID:0000000005146139

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

Seat belt buckle pre-tensioner as-
sembly LH (seat belt buckle 
switch)

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

Combination switch
(Lighting switch)

Transmits the lighting switch position signal to BCM.

Front door switch LH

Transmits the door switch signal to BCM.

Unit

Description

WKIA5465E

WCS

WARNING CHIME SYSTEM

WCS-7

< FUNCTION DIAGNOSIS >

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LIGHT REMINDER WARNING CHIME : Component Parts Location

INFOID:0000000005146140

LIGHT REMINDER WARNING CHIME : Component Description

INFOID:0000000005146141

SEAT BELT WARNING CHIME

AWNIA0211ZZ

1.

Combination meter M23, M24

2.

Combination switch (lighting switch) 
M28

3.

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

4.

Front door switch LH B8

5.

Key switch and ignition knob switch 
M12

6.

Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74

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.

Combination switch
(Lighting switch)

Transmits the lighting switch position signal to BCM.

Front door switch LH

Transmits the door switch signal to BCM.

WCS-8

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

SEAT BELT WARNING CHIME : System Diagram

INFOID:0000000005146142

SEAT BELT WARNING CHIME : System Description

INFOID:0000000005146143

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

AWNIA0156GB

WCS

WARNING CHIME SYSTEM

WCS-9

< FUNCTION DIAGNOSIS >

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SEAT BELT WARNING CHIME : Component Parts Location

INFOID:0000000005146144

SEAT BELT WARNING CHIME : Component Description

INFOID:0000000005146145

AWNIA0211ZZ

1.

Combination meter M23, M24

2.

Combination switch (lighting switch) 
M28

3.

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

4.

Front door switch LH B8

5.

Key switch and ignition knob switch 
M12

6.

Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74

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.

BCM

Judges the seat belt warning condition from the seat belt buckle switch signal received from the 
combination meter and transmits a buzzer output signal to the combination meter via CAN commu-
nication line if necessary.

Seat belt buckle pre-tensioner 
assembly LH (seat belt buckle 
switch)

Transmits seat belt buckle switch signal to combination meter.