BCM receives signals from various units and switches, and transmits the buzzer output signal to the combina-
tion meter via CAN communication if it judges that the warning buzzer should be activated.

BCM warning function list

NNNIA0183GB

NNNIA0016ZZ

Warning functions

Signal name

Light reminder warning chime

• Position light request signal
• Door switch signal (driver side)

Seat belt warning chime

Seat belt buckle switch signal (driver side)

Reverse warning chime (For Canada)

Shift position signal

2014 GT-R

WCS-4

< SYSTEM DESCRIPTION >

WARNING CHIME SYSTEM

WARNING CHIME SYSTEM : Component Parts Location

INFOID:0000000009188768

WARNING CHIME SYSTEM : Component Description

INFOID:0000000009188769

Door switch (driver side)

Seat belt buckle switch (driver side)

Parking brake switch

TCM

Combination meter

Combination switch (lighting switch)

BCM

Lower part of passenger side dash-
board

NNNIA0184ZZ

Unit

Description

Combination meter

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

the buzzer.

• Judges that the parking brake is still applied according to the vehicle speed signal re-

ceived from the ABS actuator and electric unit (control unit) via CAN communication
and the parking brake switch signal from the parking brake switch and sounds the
warning buzzer.

• Receives the vehicle speed signal from the ABS actuator and electric unit (control unit)

and the seat belt buckle switch signal (driver side) from the seat belt buckle switch (driv-
er side) and transmits them to BCM via CAN communication.

BCM

Based on the signals received from various units and switches, transmits the buzzer out-
put signal to the combination meter via CAN communication.

TCM

Transmits the shift position signal to the BCM via CAN communication.

ABS actuator and electric unit (control
unit)

Transmits the vehicle speed signal to the combination meter via CAN communication.

Seat belt buckle switch (driver side)

Transmits the seat belt buckle switch signal (driver side) to the combination meter.

Combination switch (lighting switch)

Transmits the position light request signal to BCM.

2014 GT-R

WCS

WARNING CHIME SYSTEM

WCS-5

< SYSTEM DESCRIPTION >

LIGHT REMINDER WARNING CHIME

LIGHT REMINDER WARNING CHIME : System Diagram

INFOID:0000000009188770

LIGHT REMINDER WARNING CHIME : System Description

INFOID:0000000009188771

DESCRIPTION

With ignition switch in the OFF or ACC position, when the driver door is open and the lighting switch is the 1st
or 2nd position, the light warning chime will sound.
• BCM detects ignition switch in the OFF or ACC position, door switch (driver side) ON, and lighting switch in

1st or 2nd position. Then the BCM transmits the buzzer output signal (light reminder warning chime) to com-
bination 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.
• Ignition switch is in the OFF or ACC
• Lighting switch is in the 1st or 2nd position
• 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
• Door switch (driver side) is OFF

Door switch (driver side)

Transmits the door switch signal (driver side) to BCM.

Parking brake switch

Transmits the parking brake switch signal to the combination meter.

Unit

Description

JPNIA1151GB

2014 GT-R

WCS-6

< SYSTEM DESCRIPTION >

WARNING CHIME SYSTEM

LIGHT REMINDER WARNING CHIME : Component Parts Location

INFOID:0000000009188772

LIGHT REMINDER WARNING CHIME : Component Description

INFOID:0000000009188773

SEAT BELT WARNING CHIME

Door switch (driver side)

Seat belt buckle switch (driver side)

Parking brake switch

TCM

Combination meter

Combination switch (lighting switch)

BCM

Lower part of passenger side dash-
board

NNNIA0184ZZ

Unit

Description

Combination meter

Receives a buzzer output signal from the BCM 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 position light request signal to BCM.

Door switch (driver side)

Transmits the door switch signal (driver side) to BCM.

2014 GT-R

WCS

WARNING CHIME SYSTEM

WCS-7

< SYSTEM DESCRIPTION >

SEAT BELT WARNING CHIME : System Diagram

INFOID:0000000009188774

SEAT BELT WARNING CHIME : System Description

INFOID:0000000009188775

DESCRIPTION

With ignition switch turned ON and driver seat belt unfastened, seat belt warning chime will sound for approxi-
mately 6 seconds.
• The combination meter receives the seat belt buckle switch signal from seat belt buckle switch (driver side)

and transmits it to the BCM via CAN communication.

• The BCM receives seat belt buckle switch signal from combination meter via CAN communication.
• The BCM detects seat belt reminder warning based on the received signal and transmits the buzzer output

signal to combination meter via CAN communication.

• The combination meter receives the buzzer output signal from BCM via CAN communication and sounds the

warning buzzer.

WARNING OPERATION CONDITIONS

If all of the following conditions are fulfilled, the warning buzzer will sound.
• Ignition switch OFF

→

• 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 are fulfilled.
• Ignition switch OFF
• Seat belt buckle switch (driver side) is OFF (driver seat belt fastened)

JPNIA1152GB

2014 GT-R

WCS-8

< SYSTEM DESCRIPTION >

WARNING CHIME SYSTEM

SEAT BELT WARNING CHIME : Component Parts Location

INFOID:0000000009188776

SEAT BELT WARNING CHIME : Component Description

INFOID:0000000009188777

PARKING BRAKE RELEASE WARNING CHIME

Door switch (driver side)

Seat belt buckle switch (driver side)

Parking brake switch

TCM

Combination meter

Combination switch (lighting switch)

BCM

Lower part of passenger side dash-
board

NNNIA0184ZZ

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 the BCM and sounds the buzzer.

BCM

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

Seat belt buckle switch
(driver side)

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

2014 GT-R

WCS

WARNING CHIME SYSTEM

WCS-9

< SYSTEM DESCRIPTION >

PARKING BRAKE RELEASE WARNING CHIME : System Diagram

INFOID:0000000009188778

PARKING BRAKE RELEASE WARNING CHIME : System Description

INFOID:0000000009188779

DESCRIPTION

Parking brake release warning chime judges the remaining parking brake according to the vehicle speed sig-
nal received from the ABS actuator and electric unit (control unit) via CAN communication and the parking
brake switch signal from parking brake switch to sound the warning buzzer.

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 are fulfilled.

• Vehicle speed is approximately 3 km/h (1.9 MPH) or less
• Parking brake switch OFF

JPNIA0751GB

2014 GT-R

WCS-10

< SYSTEM DESCRIPTION >

WARNING CHIME SYSTEM

PARKING BRAKE RELEASE WARNING CHIME : Component Parts Location

INFOID:0000000009188780

PARKING BRAKE RELEASE WARNING CHIME : Component Description

INFOID:0000000009188781

REVERSE WARNING CHIME

Door switch (driver side)

Seat belt buckle switch (driver side)

Parking brake switch

TCM

Combination meter

Combination switch (lighting switch)

BCM

Lower part of passenger side dash-
board

NNNIA0184ZZ

Unit

Description

Combination meter

Judges the remaining parking brake according to the vehicle speed signal received from the ABS
actuator and electric unit (control unit) via CAN communication and the parking brake switch signal
from parking brake switch and sounds the warning buzzer.

ABS actuator and electric unit
(control unit)

Transmits the vehicle speed signal to the combination meter via CAN communication.

Parking brake switch

Transmits the parking brake switch signal to the combination meter.

2014 GT-R

WCS

WARNING CHIME SYSTEM

WCS-11

< SYSTEM DESCRIPTION >

REVERSE WARNING CHIME : System Diagram

INFOID:0000000009188782

REVERSE WARNING CHIME : System Description

INFOID:0000000009188783

DESCRIPTION

• The BCM receives shift position signal (reverse range) from TCM via CAN communication.
• The BCM detects reverse warning chime based on the received signal and transmits the buzzer output sig-

nal to combination meter via CAN communication.

• The combination meter receives the buzzer output signal from BCM via CAN communication and sounds the

warning buzzer.

REVERSE WARNING CHIME : Component Parts Location

INFOID:0000000009188784

NNNIA0185GB

Door switch (driver side)

Seat belt buckle switch (driver side)

Parking brake switch

TCM

Combination meter

Combination switch (lighting switch)

BCM

Lower part of passenger side dash-
board

NNNIA0184ZZ

2014 GT-R

WCS-12

< SYSTEM DESCRIPTION >

WARNING CHIME SYSTEM

REVERSE WARNING CHIME : Component Description

INFOID:0000000009188785

Unit

Description

Combination meter

Receives a buzzer output signal from the BCM and sounds the buzzer.

BCM

• The BCM receives shift position signal from TCM via CAN communication.
• The BCM detects reverse warning based on the received signal and transmits the buzzer output

signal to combination meter via CAN communication.

TCM

Transmits the shift position signal to BCM via CAN communication.

2014 GT-R

WCS

POWER SUPPLY AND GROUND CIRCUIT

WCS-13

< DTC/CIRCUIT DIAGNOSIS >

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER

COMBINATION METER : Diagnosis Procedure

INFOID:0000000009188786

CHECK FUSES

Check that the following fuses are not blown:

Is the inspection result normal?

YES

>> GO TO 2.

>> Replace the fuse with a new one after repairing the applicable circuit.

CHECK POWER SUPPLY CIRCUIT

Check the voltage between the combination meter harness connector terminals and the ground.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair the harness between the fuse and the combination meter.

CHECK GROUND CIRCUIT

Turn the ignition switch OFF.

Disconnect the combination meter connector.

Check for continuity between the combination meter harness connector terminals and the ground.

Is the inspection result normal?

YES

>> INSPECTION END

>> Repair the harnesses or connectors.

BCM (BODY CONTROL MODULE)

BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000009188787

CHECK FUSE AND FUSIBLE LINK

Check that the following fuse and fusible link are not blown.

Is the fuse fusing?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is

blown.

Power source

Fuse No.

Battery

Ignition switch ON or START

Terminal No.

Signal name

Ignition switch

Voltage

Battery power supply

OFF

Battery voltage

Ignition signal

Battery voltage

Combination meter

Ground

Continuity

Connector

Terminal

M53

Existed

Signal name

Fuse and fusible link No.

Battery power supply

2014 GT-R

WCS-14

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

>> GO TO 2.

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

Disconnect BCM connectors.

Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3.

>> Repair harness or connector.

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> INSPECTION END

>> Repair harness or connector.

Terminals

Voltage

(Approx.)

(+)

(

−

)

BCM

Ground

Connector

Terminal

M118

Battery voltage

M119

BCM

Ground

Continuity

Connector

Terminal

M119

Existed

2014 GT-R

WCS

METER BUZZER CIRCUIT

WCS-15

< DTC/CIRCUIT DIAGNOSIS >

METER BUZZER CIRCUIT

Description

INFOID:0000000009188788

• The buzzer for warning chime system is installed in the combination meter.
• The combination meter sounds the alarm buzzer based on the signals transmitted from various units and

switches.

Diagnosis Procedure

INFOID:0000000009188789

CHECK POWER SUPPLY OF COMBINATION METER

Check power supply of combination meter. Refer to

MWI-40, "COMBINATION METER : Diagnosis Proce-

dure"

Is the inspection result normal?

YES

>> INSPECTION END

>> Repair power supply circuit of combination meter. Refer to

MWI-40, "COMBINATION METER :

Diagnosis Procedure"

2014 GT-R

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