Nissan GT-R. Manual - part 271

SE-26

< DTC/CIRCUIT DIAGNOSIS >

SEAT CUSHION HEATER (DRIVER SIDE)

2.

Connect seat cushion heater connector.

3.

Disconnect seatback heater connector.

4.

Turn ignition switch ON.

5.

Check voltage between seat cushion heater harness connector and ground.

NOTE:
Voltage is repeated within the value shown as per the following list depending on heater unit temperature.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace seat cushion heater.

4.

CHECK SEAT CUSHION HEATER GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect seat cushion heater connector.

3.

Check continuity between seat cushion heater harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

CHECK SEAT CUSHION HEATER

Check seat cushion heater.
Refer to 

SE-26, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace seat cushion heater.

6.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-38, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000009162925

1.

CHECK SEAT CUSHION HEATER (MAIN HEATER CIRCUIT)

1.

Turn ignition switch OFF.

2.

Disconnect seat cushion heater connector.

3.

Check resistance between seat cushion heater terminals.

NOTE:
Resistance value changes according to temperature.

Is the inspection result normal?

(+)

(–)

Condition

Voltage (V)

(Approx.)

Seat cushion heater

Connector

Terminal

B518

12

Ground

Heated seat

Operates

0 – Battery voltage

Other than above

0

Seat cushion heater

Ground

Continuity 

 Connector

Terminal

B518

21

Existed

Seat cushion heater

Condition

Resistance

(

Ω

)

(Approx.)

Terminal

21

41

When heat sensor temperature is 20

°

C (68

°

F)

2.99 – 3.59

SEAT CUSHION HEATER (DRIVER SIDE)

SE-27

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

YES

>> GO TO 2.

NO

>> Replace seat cushion heater.

2.

CHECK SEAT CUSHION HEATER (SEATBACK HEATER CIRCUIT)

Check resistance between seat cushion heater terminals.

NOTE:
Resistance value changes according to temperature.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace seat cushion heater.

Seat cushion heater

Condition

Resistance

(

Ω

)

(Approx.)

Terminal

21

12

When heat sensor temperature is 20

°

C (68

°

F)

3.13 – 3.75

SE-28

< DTC/CIRCUIT DIAGNOSIS >

SEATBACK HEATER (DRIVER SIDE)

SEATBACK HEATER (DRIVER SIDE)

Description

INFOID:0000000009162926

Warms the seatback.

Component Function Check

INFOID:0000000009162927

1.

CHECK FUNCTION

Check that heated seat warms to preset temperature when operating heated seat switch to the optimal posi-
tion.
Is the inspection result normal?

YES

>> Seatback heater function is OK.

NO

>> Refer to 

SE-28, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009162928

1.

CHECK SEAT CUSHION HEATER INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect seatback heater connector.

3.

Turn ignition switch ON.

4.

Check voltage between seatback heater harness connector and ground.

NOTE:
Voltage is repeated within the value shown as per the following list depending on heater unit temperature.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK SEATBACK HEATER CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect seat cushion heater connector.

3.

Check continuity between seatback heater harness connector and seat cushion heater harness connec-
tor. 

4.

Check continuity between seatback heater harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness.

3.

CHECK SEATBACK HEATER OUTPUT SIGNAL

1.

Turn ignition switch OFF.

(+)

(–)

Condition

Voltage (V)

(Approx.)

Seatback heater

Connector

Terminal

B515

12

Ground

Heated seat

Operates

0 – Battery voltage

Other than above

0

Seatback heater

Seat cushion heater

Continuity 

Connector

Terminal

Connector

Terminal

B515

12

B508

12

Existed

Seatback heater

Ground

Continuity 

Connector

Terminal

B515

12

Not existed

SEATBACK HEATER (DRIVER SIDE)

SE-29

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

2.

Connect seat cushion heater connector.

3.

Check continuity between seatback heater harness connector and seat cushion heater harness connec-
tor. 

4.

Check continuity between seatback heater harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace seat cushion heater.

4.

CHECK SEAT CUSHION HEATER

Check seat cushion heater.
Refer to 

SE-26, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace seat cushion heater.

5.

CHECK SEATBACK HEATER

Check seatback heater.
Refer to 

SE-26, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace seatback heater.

6.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-38, "Intermittent Incident"

>> INSPECTION END

Component Inspection (Seat Cushion Heater)

INFOID:0000000009162929

1.

CHECK SEAT CUSHION HEATER

1.

Turn ignition switch OFF.

2.

Disconnect seat cushion heater connector.

3.

Check continuity between seatback heater terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace seat cushion heater.

Component Inspection (Seatback Heater)

INFOID:0000000009162930

1.

CHECK SEATBACK HEATER

1.

Turn ignition switch OFF.

2.

Disconnect seatback heater connector.

Seatback heater

Seat cushion heater

Continuity 

Connector

Terminal

Connector

Terminal

B515

51

B508

51

Existed

Seatback heater

Ground

Continuity 

Connector

Terminal

B515

51

Not existed

Seat cushion heater

Continuity 

Terminal

51

21

Existed