Infiniti F50. Manual - part 789

HEATED SEAT

SE-147

C

D

E

F

G

H

J

K

L

M

A

B

SE

3. 

CHECK FRONT SEATBACK HEATER HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect front heated seat switch connector and front seat-
back heater connector.

3.

Check continuity between front heated seat switch connector
M94(driver side), M95 (passenger side) terminal 3 and front
seatback heater connector B152(driver side), B352(passenger
side) terminal 63(B).

4.

Check continuity between front heated seat switch connector M94(driver side), M95 (passenger side) ter-
minal 3 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between front heated seat switch and front seatback heater.

4. 

CHECK FRONT SEATBACK HEATER

Check continuity between front seatback heater B152 (LH), B352
(RH) terminal C (SB) and 63 (B).

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Replace front seatback heater.

Front Heated Seat Switch Ground Circuit Inspection

EIS003W6

1. 

CHECK FRONT HEATED SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front heated seat switch connector.

3.

Check continuity between front heated seat switch as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace front heated seat switch.

Driver side

3 (R/Y) – 63 (B)

: Continuity should exist

Passenger side

3 (Y) – 63 (B)

: Continuity should exist

Driver side

3 (R/Y) – Ground

: Continuity should not exist

Passenger side

3 (Y) – Ground

: Continuity should not exist

PIIA4029E

C (SB) 

−

 63 (B)

: Continuity should exist

PIIA4112E

Terminal

Condition

Continuity

2

4

Front heated seat switch HIGH.

YES

Other than above.

NO

PIIA4033E

SE-148

HEATED SEAT

2. 

CHECK FRONT HEATED SEAT SWITCH GROUND HARNESS

Check continuity between front heated seat switch connector M94
(Driver side), M95 (passenger side) terminal 4 (B) and ground.

OK or NG

OK

>> Check connector for damage or loose connection.

NG

>> Repair or replace harness between front heated seat

switch and ground.

Rear Power Seat Control Unit Power Supply Circuit Inspection 1

EIS003W7

1. 

CHECK REAR POWER SEAT OPERATION

Does the rear power seat operate normally?
YES or NO

YES

>> GO TO 4.

NO

>> GO TO 2.

2. 

CHECK FUSIBLE LINK 

Check 40A fusible link (letter H located in the fuse and fusible link box).
NOTE:
Refer to

SE-130, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> GO TO 3.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to 

SE-

130, "Component Parts and Harness Connector Location"

 .

3. 

CHECK REAR POWER SEAT CONTROL UNIT BATTERY POWER SUPPLY CIRCUIT

1.

Disconnect rear power seat control unit connector.

2.

Check voltage between rear power seat control unit connector
B162 (driver side), B362 (RH) terminal 2 (G) and ground.

OK or NG

OK

>> Check the condition of the harness connector.

NG

>> Repair or replace harness between fuse block (J/B) and

rear power seat control unit.

4 (B) 

−

 Ground

:Continuity should exist

PIIA4034E

2 (G) 

−

 Ground

: Battery voltage

PIIA3978E

HEATED SEAT

SE-149

C

D

E

F

G

H

J

K

L

M

A

B

SE

4. 

CHECK REAR POWER SEAT CONTROL UNIT IGNITION POWER SUPPLY CIRCUIT

1.

Check the condition of the harness and connector.

2.

Turn ignition switch ON.

3.

Check voltage between rear power seat control unit connector
B162 (driver side), B362 (RH) connector terminal 44 (GY/B) and
ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between fuse block (J/B) and

rear power seat control unit.

Rear Power Seat Control Unit Power Supply and Ground Circuit Inspection

EIS003W9

1. 

CHECK REAR POWER SEAR OPERATION

Does the rear power seat operate normally?

YES or NO

YES

>> GO TO 4.

NO

>> GO TO 2.

2. 

CHECK REAR POWER SEAT CONTROL UNIT POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect rear power seat control unit connector.

3.

Check voltage between rear power seat control unit connector
B162 (driver side), B362 (RH) terminal 2 (G) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between fuse block (J/B) and

rear power seat control unit.

3. 

CHECK REAR POWER SEAT CONTROL UNIT GROUND CIRCUIT

Check continuity between rear power seat control unit connector
B162 (LH), B362 (RH)  terminal 15 (B) and ground.

OK or NG

OK

>> Replace rear power seat control unit.

NG

>> Repair or replace harness between rear power seat con-

trol unit and ground.

44 (GY/B) 

−

 Ground

: Battery voltage

PIIA4035E

2 (G) 

−

 Ground

: Battery voltage

PIIA3978E

15 (B) 

−

 Ground

:Continuity should exist

PIIA4036E

SE-150

HEATED SEAT

4. 

CHECK REAR POWER SEAT CONTROL UNIT POWER SUPPLY CIRCUIT

1.

Disconnect rear power seat control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between rear power seat control unit B162 (LH),
B362 (RH) connector terminal 44 (GY/B) and ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between fuse block (J/B) and

rear power seat control unit.

Rear Power Seat Switch (Heater Switch) Ground Circuit Inspection

EIS003W1

1. 

CHECK REAR POWER SEAT SWITCH (HEATER SWITCH)

1.

Turn ignition switch OFF.

2.

Disconnect rear power seat switch (Heater switch) connector.

3.

Check continuity between rear power seat switch (heater switch)
as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace rear power seat switch (Heater switch).

2. 

CHECK REAR POWER SEAT SWITCH (HEATER SWITCH) GROUND CIRCUIT

Check continuity between rear power seat switch (heater switch)
connector D55 (LH), D75 (RH) terminal 2 (B) and ground.

OK or NG

OK

>> Rear power seat switch (heater switch) ground circuit

check is OK.

NG

>> Repair or replace harness between rear power seat

switch (heater switch) and ground.

44 (GY/B) 

−

 Ground

: Battery voltage

PIIA4035E

Terminal

Condition

Continuity

5

2

Rear heater switch LOW.

YES

6

Rear heater switch HIGH.

YES

5

2

Other than above.

NO

6

PIIA4046E

2 (B) 

−

 Ground

:Continuity should exist

PIIA4038E