Infiniti F50. Manual - part 782

POWER SEAT

SE-119

C

D

E

F

G

H

J

K

L

M

A

B

SE

3. 

CHECK DOOR SWITCH

1.

Disconnect door lock assembly connector.

2.

Check continuity between door lock assembly as follows.

OK or NG

OK

>> GO TO 4.

NG

>> Replace door lock assembly.

4. 

CHECK DOOR SWITCH HARNESS

Check continuity between door lock assembly connector D62 (LH),
D82 (RH) terminal 2 (B) and ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between door lock assembly

and ground.

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

EIS003VC

1. 

CHECK REAR POWER SEAT SLIDING MOTOR SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Check signal between rear power seat control unit connector
and ground with oscilloscope.

OK or NG

OK

>> Rear power seat sliding sensor circuit check is OK.

NG

>> GO TO 2.

Terminal

Condition

Continuity

1

2

Door switch ON

YES

Door switch OFF

NO

PIIA3993E

2 (B) 

−

 Ground

:Continuity should exist

PIIA4025E

Con-

nec-

tor

Terminal

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

B163 

(LH),

B363 

(RH)

21

 (W/G)

Ground

Rear power seat 
switch (sliding 
switch) forward 
or backward.

PIIA3994E

SIIA0690J

SE-120

POWER SEAT

2. 

CHECK REAR POWER SEAT SLIDING MOTOR SENSOR HARNESS

1.

Disconnect rear power seat control unit connector and rear
power seat sliding motor sensor connector.

2.

Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 21 (W/G), 74 (G/R) and rear
power seat sliding motor connector B164 (LH), B364 (RH) termi-
nal 21 (W/G), 74 (G/R).

3.

Check continuity between rear power seat control unit connector
B162 (LH), B362 (RH) terminal 21 (W/G), 74 (G/R) 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.

Rear Power Seat Control Unit Power Supply and Ground Inspection (Without 
Heated Seat)

EIS003VE

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
B168 (LH), B368 (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.

2. 

CHECK REAR POWER SEAT CONTROL UNIT GROUND CIRCUIT

Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminals 15 (B), 28 (G/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.

21 (W/G) 

−

 21 (W/G)

:Continuity should exist.

74 (G/R) 

−

 74 (G/R)

:Continuity should exist.

21 (W/G) 

−

 Ground

:Continuity should not exist.

74 (G/R) 

−

 Ground

:Continuity should not exist.

PIIA3995E

2 (G) 

−

 Ground

: Battery voltage

PIIA3997E

15 (B) 

−

 Ground

:Continuity should exist

28 (G/B) 

−

 Ground

:Continuity should exist

PIIA3998E

POWER SEAT

SE-121

C

D

E

F

G

H

J

K

L

M

A

B

SE

Rear Power Seat Sliding Motor Circuit Inspection (Without Heated Seat)

EIS003VF

1. 

CHECK REAR POWER SEAT SLIDING MOTOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

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 and rear
power seat sliding motor connector.

2.

Check continuity between rear power seat control unit connector
B168 (LH), B368 (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
B168 (LH), B368 (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.

Con-

nector

Terminal

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

B168 

(LH),

B368 

(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

PIIA3999E

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

PIIA4000E

SE-122

POWER SEAT

Rear Power Seat Switch Circuit Inspection (Without Heated Seat)

EIS003VG

1. 

CHECK REAR POWER SEAT SWITCH POWER SUPPLY

1.

Turn ignition switch OFF.

2.

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

OK or NG

OK

>> Rear power seat switch circuit is OK.

NG

>> GO TO 2.

2. 

CHECK REAR POWER SEAT SWITCH HARNESS

1.

Disconnect rear power seat control unit connector and rear
power seat switch connector.

2.

Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 18 (BR/W), 24 (OR/L) and rear
power seat switch connector D55 (LH), D75 (RH) terminal 7 (G/
Y), 8 (OR/L).

3.

Check continuity between rear power seat control unit connector B168 (LH), B368 (RH) terminal 18 BR/
W), 24 (OR/L) and ground.

OK or NG

OK

>> GO TO 3.

NG

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

Con-

nector

Terminal

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

B168 

(LH),

B368 

(RH)

18 (BR/W)

Ground

Rear power seat switch (sliding 
switch) backward.

0

Rear power seat switch (sliding 
switch) OFF.

 Battery 

voltage

24 (L/G)

Ground

Rear power seat switch (sliding 
switch) forward.

0

Rear power seat switch (sliding 
switch) OFF.

 Battery 

voltage

PIIA4017E

Rear power seat LH

18 (BR/W) 

−

 8 (OR/L)

:Continuity should exist

24 (L/G) 

−

 7 (G/Y)

:Continuity should exist

Rear power seat RH

18 (BR/W) 

−

 8 (OR/L)

:Continuity should exist

24 (L/G) 

−

 7 (G/Y)

:Continuity should exist

18 (BR/W) 

−

 Ground

:Continuity should not exist

24 (L/G) 

−

 Ground

:Continuity should not exist

PIIA4018E