Infiniti G37 Coupe. Manual - part 1384

WCS-8

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

LIGHT REMINDER WARNING CHIME : Component Parts Location

INFOID:0000000001697929

LIGHT REMINDER WARNING CHIME : Component Description

INFOID:0000000001606811

SEAT BELT WARNING CHIME

JPNIA0502ZZ

1.

BCM

2.

Parking brake switch (A/T models)

3.

Combination meter

4.

Combination switch
(Lighting switch)

5.

Unified meter and A/C amp.

6.

Front driver side door switch

7.

Seat belt buckle switch (driver side)

8.

Parking brake switch (M/T models)

A.

Dash side lower (passenger side)

B.

Behind cluster lid C (back)

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 chime conditions from the signals provided by various switches and trans-
mits a buzzer output signal to the unified meter and A/C amp. via CAN communication line if nec-
essary.

Combination switch
(Lighting switch)

Transmits the lighting switch position signal to BCM.

Front driver side door switch

Transmits the front driver side door switch signal to BCM.

WCS

WARNING CHIME SYSTEM

WCS-9

< FUNCTION DIAGNOSIS >

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SEAT BELT WARNING CHIME : System Diagram

INFOID:0000000001606812

SEAT BELT WARNING CHIME : System Description

INFOID:0000000001606813

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 buckle switch (driver side) is ON (driver seat belt unfastened)

WARNING CANCEL CONDITIONS

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

JSNIA0621GB

WCS-10

< FUNCTION DIAGNOSIS >

WARNING CHIME SYSTEM

SEAT BELT WARNING CHIME : Component Parts Location

INFOID:0000000001697930

SEAT BELT WARNING CHIME : Component Description

INFOID:0000000001606815

PARKING BRAKE RELEASE WARNING CHIME

JPNIA0502ZZ

1.

BCM

2.

Parking brake switch (A/T models)

3.

Combination meter

4.

Combination switch
(Lighting switch)

5.

Unified meter and A/C amp.

6.

Front driver side door switch

7.

Seat belt buckle switch (driver side)

8.

Parking brake switch (M/T models)

A.

Dash side lower (passenger side)

B.

Behind cluster lid C (back)

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 (driver side) signal from the seat belt buckle switch (driver 

side) 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 chime condition from the seat belt buckle switch signal received from 
the unified 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"

.

WCS

WARNING CHIME SYSTEM

WCS-11

< FUNCTION DIAGNOSIS >

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PARKING BRAKE RELEASE WARNING CHIME : System Diagram

INFOID:0000000001606816

PARKING BRAKE RELEASE WARNING CHIME : System Description

INFOID:0000000001606817

DESCRIPTION

• The unified meter and A/C amp. receives the vehicle speed signal from the ABS actuator and electric unit

(control unit) via CAN communication line and transmits it to the combination meter by means of communi-
cation line.

• The combination meter judges whether the parking brake is released from the vehicle speed signal received

from the unified meter and A/C amp. and the parking brake switch signal from the parking brake switch, and
sounds the warning buzzer if necessary.

WARNING OPERATION CONDITIONS

If all of the following conditions are fulfilled.
• Vehicle speed is 7 km/h (4.3 MPH) or higher
• Parking brake switch ON

WARNING CANCEL CONDITIONS

Warning is canceled if any of the following conditions is fulfilled.
• Vehicle speed is approximately 3 km/h (1.9 MPH) or less
• Parking brake switch OFF

JSNIA0622GB