Infiniti F50. Manual - part 780

POWER SEAT

SE-111

C

D

E

F

G

H

J

K

L

M

A

B

SE

2. 

CHECK SLIDING MOTOR HARNESS

1.

Disconnect sliding motor connector.

2.

Check continuity between front power seat passenger side
switch connector B342 terminals 1 (W), 8 (B/W) and body sliding
motor connector B343 terminals 1 (W), 8 (B/W).

3.

Check continuity between front power seat passenger side
switch connector B342 terminal 1 (W), 8 (B/W) and ground.

OK or NG

OK

>> Replace sliding motor.

NG

>> Repair or replace harness between front power seat passenger side switch and sliding motor.

Front Power Seat Passenger Side Reclining Circuit Inspection

EIS003V3

1. 

CHECK POWER SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front power seat passenger side switch connector.

3.

Check continuity between front power seat passenger side
switch as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace front power seat passenger side switch.

2. 

CHECK RECLINING MOTOR HARNESS

1.

Disconnect reclining motor connector.

2.

Check continuity between front power seat passenger side
switch connector B342 terminals 2 (G), 9 (PU) and reclining
motor connector B344 terminals 2 (G), 9 (PU).

3.

Check continuity between front power seat passenger side
switch connector B342 terminals 2 (G), 9 (PU) and ground.

OK or NG

OK

>> Replace reclining motor.

NG

>> Repair or replace harness between front power seat passenger side switch and reclining motor.

1 (W) 

−

 1 (W)

:Continuity should exist.

8 (B/W) 

−

 8 (B/W)

:Continuity should exist.

1 (W) 

−

 Ground

:Continuity should not exist.

8 (B/W) 

−

 Ground

:Continuity should not exist.

PIIA3968E

Terminal

Condition

Continuity

2

15A

Reclining switch backward.

YES

16

Reclining switch forward.

YES

15A, 16

Other than above

NO

9

15A

Reclining switch forward.

YES

16

Reclining switch backward.

YES

15A, 16

Other than above

NO

PIIA3970E

2 (G) 

−

 2 (G)

:Continuity should exist

9 (PU) 

−

 9 (PU)

:Continuity should exist

2 (G) 

−

 Ground

:Continuity should not exist

9 (PU) 

−

 Ground

:Continuity should not exist

PIIA3971E

SE-112

POWER SEAT

Front Power Seat Passenger Side Front Lifting Circuit Inspection

EIS003V4

1. 

CHECK POWER SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front power seat passenger side switch connector.

3.

Check continuity between front power seat passenger side
switch as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace front power seat passenger side switch.

2. 

CHECK FRONT LIFTING MOTOR HARNESS

1.

Disconnect front lifting motor connector.

2.

Check continuity between front power seat passenger side
switch connector B342 terminals 10 (OR), 11 (LG) and front lift-
ing motor connector B346 terminals 10 (OR), 11 (LG).

3.

Check continuity between front power seat passenger side
switch connector B342 terminals 10 (OR), 11 (LG) and ground.

OK or NG

OK

>> Replace front lifting motor.

NG

>> Repair or replace harness between front power seat passenger side switch and front lifting motor.

Terminal

Condition

Continuity

10

15A

Front lifting switch up.

YES

16

Front lifting switch down.

YES

15A, 16

Other than above

NO

11

15A

Front lifting switch down.

YES

16

Front lifting switch up.

YES

15A, 16

Other than above

NO

PIIA3973E

10 (OR) 

−

 10 (OR)

:Continuity should exist.

11 (LG) 

−

 11 (LG)

:Continuity should exist.

10 (OR) 

−

 Ground

:Continuity should not exist.

11 (LG) 

−

 Ground

:Continuity should not exist.

PIIA3974E

POWER SEAT

SE-113

C

D

E

F

G

H

J

K

L

M

A

B

SE

Front Power Seat Passenger Side Rear Lifting Circuit Inspection

EIS003V5

1. 

CHECK POWER SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front power seat passenger side switch connector.

3.

Check continuity between front power seat passenger side
switch as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace front power seat passenger side switch.

2. 

CHECK REAR LIFTING MOTOR HARNESS

1.

Disconnect front power seat passenger side switch connector
and rear lifting motor connector.

2.

Check continuity between front power seat passenger side
switch connector B342 terminals 4 (R), 6 (Y) and rear lifting
motor connector B347 terminals 4 (R), 6 (Y).

3.

Check continuity between front power seat passenger side
switch connector B342 terminals 4 (R), 6 (Y) and ground.

OK or NG

OK

>> Replace rear lifting motor.

NG

>> Repair or replace harness between front power seat passenger side switch and rear lifting motor.

Rear Power Seat Control unit Power Supply and Ground Circuit Inspection 
(With Heated Seat)

EIS003V7

1. 

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 (LH), B362 (RH) terminal 2 (G) and ground.

OK or NG

OK

>> GO TO 2.

NG

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

No.1 and rear power seat control unit.

Terminal

Condition

Continuity

4

15A

Rear lifting switch up.

YES

16

Rear lifting switch down.

YES

15A, 16

Other than above

NO

6

15A

Rear lifting switch down.

YES

16

Rear lifting switch up.

YES

15A, 16

Other than above

NO

PIIA3976E

4 (R) 

−

 4 (R)

:Continuity should exist.

6 (Y) 

−

 6 (Y)

:Continuity should exist.

4 (R) 

−

 Ground

:Continuity should not exist.

6 (Y) 

−

 Ground

:Continuity should not exist.

PIIA3977E

2 (G) 

−

 Ground

: Battery voltage.

PIIA3978E

SE-114

POWER SEAT

2. 

CHECK REAR POWER SEAT CONTROL UNIT GROUND CIRCUIT

Check continuity between rear power seat control unit connector
B162 (LH), B362 (RH) terminals 15 (B), 28 (B) and ground.

OK or NG

OK

>> Rear power seat control unit power supply and ground

circuit check is OK.

NG

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

trol unit and ground.

Rear Power Seat Sliding Motor Circuit Inspection (With Heated Seat)

EIS003V2

1. 

CHECK REAR POWER SEAT SLIDING MOTOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect rear power seat sliding motor.

3.

Check voltage between rear power seat control unit connector
and ground.

OK or NG

OK

>> Rear power seat sliding motor circuit is OK.

NG

>> GO TO 2.

2. 

CHECK REAR POWER SEAT SLIDING MOTOR HARNESS

1.

Disconnect rear power seat control unit connector.

2.

Check continuity between rear power seat control unit connector
B162 (LH), B362 (RH) terminal 4 (Y), 11 (GY) and rear power
seat sliding motor connector B164 (LH), B364 (RH) terminal 4
(Y), 11 (GY).

3.

Check continuity between rear power seat control unit connector
B162 (LH), B362 (RH) terminal 4 (Y), 11 (GY) and ground.

OK or NG

OK

>> Replace rear power seat sliding motor.

NG

>> Repair or replace harness between rear power seat control unit and rear power seat sliding motor.

15 (B) 

−

 Ground

:Continuity should exist.

28 (B) 

−

 Ground

:Continuity should exist.

PIIA3979E

Con-

nector

Terminal

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

B162 

(LH),

B362 

(RH)

4 (Y)

Ground

Rear power seat switch (sliding 
switch) forward.

 Battery voltage

Rear power seat switch (sliding 
switch) OFF.

0

11 (GY)

Rear power seat switch (sliding 
switch) backward.

 Battery voltage

Rear power seat switch (sliding 
switch) OFF.

0

PIIA3980E

4 (Y) 

−

 4 (Y)

:Continuity should exist.

11 (GY) 

−

 11 (GY)

:Continuity should exist.

4 (Y) 

−

 Ground

:Continuity should not exist.

11 (GY) 

−

 Ground

:Continuity should not exist.

PIIA3981E