Infiniti EX35. Manual - part 1488

WCS

WARNING CHIME SYSTEM

WCS-7

< FUNCTION DIAGNOSIS >

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LIGHT REMINDER WARNING CHIME

LIGHT REMINDER WARNING CHIME : System Diagram

INFOID:0000000003135083

LIGHT REMINDER WARNING CHIME : System Description

INFOID:0000000003135084

DESCRIPTION

With ignition switch in OFF or ACC position, driver door open, and lighting switch in 1ST or 2ND position, the
light reminder warning chime will sound. 
• BCM detects ignition switch in OFF or ACC position, front door switch (driver side) ON, and lighting switch in

1ST or 2ND position. And then transmits buzzer output signal (light reminder warning chime) to unified meter
and A/C amp. with CAN communication line.

• Unified meter and A/C amp. transmits buzzer output signal (light reminder warning chime) to combination

meter with 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 (driver side) 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 (driver side) is OFF

Combination switch
(Lighting switch)

Transmits the lighting switch position signal to BCM.

Front door switch
(driver side)

Transmits the door switch signal to BCM.

Parking brake switch

Refer to 

MWI-65, "Description"

.

Unit

Description

JSNIA0167GB

WCS-8

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

LIGHT REMINDER WARNING CHIME : Component Parts Location

INFOID:0000000003566465

LIGHT REMINDER WARNING CHIME : Component Description

INFOID:0000000003135086

SEAT BELT WARNING CHIME

1.

BCM

2.

ABS actuator and electric unit (con-
trol unit)

3.

Unified meter and A/C amp.

4.

Front door switch (driver side)

5.

Combination switch
(Lighting switch)

6.

Parking brake switch

7.

Seat belt buckle switch (driver side)

8.

Combination meter

A.

Dash side lower (passenger side)

B.

Hoodledge cover (LH)

C.

Behind cluster lid C

JPNIA0869ZZ

Unit

Description

Combination meter

Receives a buzzer output signal from the unified meter and A/C amp. and sounds the buzzer.

Unified meter and A/C amp.

Receives a buzzer output signal from BCM via CAN communication line and transmits it to the com-
bination meter by means of communication line.

BCM

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

Combination switch
(Lighting switch)

Transmits the lighting switch position signal to BCM.

Front door switch
(driver side)

Transmits the door switch signal to BCM.

WCS

WARNING CHIME SYSTEM

WCS-9

< FUNCTION DIAGNOSIS >

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SEAT BELT WARNING CHIME : System Diagram

INFOID:0000000003135087

SEAT BELT WARNING CHIME : System Description

INFOID:0000000003135088

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 unified meter and A/C amp. with CAN communication line.
• BCM detects ignition switch turned ON and seat belt buckle switch (driver side) ON. And then transmits

buzzer output signal (seat belt warning chime) to unified meter and A/C amp. with CAN communication line.

• Unified meter and A/C amp. transmits buzzer output signal (seat belt warning chime) to combination meter

with 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 (driver side) is ON (driver seat belt not fastened)

WARNING CANCEL CONDITIONS

Warning is canceled if any of the following conditions is fulfilled.
• Ignition switch OFF
• Seat belt buckle switch (driver side) is OFF (driver seat belt fastened)

JSNIA0168GB

WCS-10

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

SEAT BELT WARNING CHIME : Component Parts Location

INFOID:0000000003566466

SEAT BELT WARNING CHIME : Component Description

INFOID:0000000003135090

PARKING BRAKE RELEASE WARNING CHIME

1.

BCM

2.

ABS actuator and electric unit (con-
trol unit)

3.

Unified meter and A/C amp.

4.

Front door switch (driver side)

5.

Combination switch
(Lighting switch)

6.

Parking brake switch

7.

Seat belt buckle switch (driver side)

8.

Combination meter

A.

Dash side lower (passenger side)

B.

Hoodledge cover (LH)

C.

Behind cluster lid C

JPNIA0869ZZ

Unit

Description

Combination meter

Receives a buzzer output signal from the unified meter and A/C amp. and sounds the buzzer.

Unified meter and A/C amp.

• 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 transmits it to the 

combination meter by means of communication line.

BCM

Judges the seat belt warning condition from the seat belt buckle switch signal received from the uni-
fied meter and A/C amp. and transmits a buzzer output signal to the unified meter and A/C amp. via 
CAN communication line if necessary.

Seat belt buckle switch
(driver side)

Refer to 

WCS-24, "Description"

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