Nissan GT-R. Manual - part 268

SE-14

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

HEATED SEAT CONTROL UNIT

HEATED SEAT CONTROL UNIT : Diagnosis Procedure

INFOID:0000000009162908

1.

CHECK FUSE

Check that the following fuse is not fusing.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect heated seat control unit connector.

3.

Turn ignition switch ON.

4.

Check voltage between heated seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect heated seat relay connector.

3.

Check continuity between heated seat control unit harness connector and heated seat relay terminal con-
nector. 

4.

Check continuity between heated seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> Check heated seat relay. Refer to 

SE-20, "Component Function Check"

.

NO

>> Repair or replace harness.

4.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between heated seat control unit harness connector and ground.

Signal name

Fuse No.

Battery power supply

35 (15 A)

(+)

(

−

)

Voltage (V)

(Approx.)

Heated seat control unit

Connector

Terminal

B519

18

Ground

Battery voltage

Heated seat control unit 

Heated seat relay

Continuity 

Connector

Terminal

Connector

Terminal

B519

18

M70

3

Existed

Heated seat control unit 

Ground

Continuity 

Connector

Terminal

B519

18

Not existed

POWER SUPPLY AND GROUND CIRCUIT

SE-15

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

Is the inspection result normal?

YES

>> Replace heated seat control unit.

NO

>> Repair or replace harness.

HEATED SEAT SWITCH (DRIVER SIDE)

HEATED SEAT SWITCH (DRIVER SIDE) : Diagnosis Procedure

INFOID:0000000009162909

1.

CHECK FUSE

Check that the following fuse is not fusing.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect heated seat switch connector.

3.

Turn ignition switch ON.

4.

Check voltage between heated seat switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect heated seat relay connector.

3.

Check continuity between heated seat switch harness connector and heated seat relay terminal connec-
tor. 

4.

Check continuity between heated seat switch harness connector and ground.

Is the inspection result normal?

YES

>> Check heated seat relay. Refer to 

SE-20, "Component Function Check"

.

NO

>> Repair or replace harness.

4.

CHECK INTERMITTENT INCIDENT

Heated seat control unit

Ground

Continuity

Connector

Terminal

B519

21

Existed

Signal name

Fuse No.

Battery power supply

35 (15 A)

(+)

(

−

)

Voltage (V)

(Approx.)

Heated seat switch

Connector

Terminal

Driver side

B513

18

Ground

Battery voltage

Heated seat switch 

Heated seat relay

Continuity 

Connector

Terminal

Connector

Terminal

Driver side

B513

18

M70

3

Existed

Heated seat switch 

Ground

Continuity 

Connector

Terminal

Driver side

B513

18

Not existed

SE-16

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

Check intermittent incident.
Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

HEATED SEAT SWITCH (DRIVER SIDE)

SE-17

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

HEATED SEAT SWITCH (DRIVER SIDE)

Description

INFOID:0000000009162910

Adjusts heated seat temperature and deactivates heated seat.

Component Function Check

INFOID:0000000009162911

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

>> Heated seat switch function is OK.

NO

>> Refer to 

SE-17, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009162912

1.

CHECK HEATED SEAT CONTROL UNIT INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect heated seat control unit connector.

3.

Turn ignition switch ON.

4.

Check voltage between heated seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> Heated seat switch circuit is OK.

NO

>> GO TO 2.

2.

CHECK HEATED SEAT SWITCH CIRCUIT 1

1.

Turn ignition switch OFF.

2.

Disconnect heated seat switch connector, diode3 and diode4 connector.

3.

Check continuity between heated seat switch harness connector and diode3 harness connector. 

4.

Check continuity between heated seat switch harness connector and diode4 harness connector. 

5.

Check continuity between heated seat switch harness connector and ground.

(+)

(–)

Condition

Voltage (V)

(Approx.)

Heated seat control unit

Connector

Terminal

B519

81

Ground

Heated seat switch

OFF

0

LO

12.24

HI

12.90

80

OFF

0

LO

Battery voltage

HI

Heated seat switch

Diaudo3

Continuity 

Connector

Terminal

Connector

Terminal

B513

22

B520

22

Existed

23

23

Heated seat switch

Diaudo4

Continuity 

Connector

Terminal

Connector

Terminal

B513

22

B521

83

Existed

23

82