Infiniti G35 (V35). Manual - part 755

SE-122

POWER SEAT

4. 

CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL

1.

Connect driver seat control unit connector.

2.

Check voltage between driver seat control unit connector B324
terminal 5 and ground.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Replace driver control unit.

Check Vehicle Speed Signal

NIS000IF

1. 

CHECK VEHICLE SPEED INPUT SIGNAL

Check the signal between seat control unit connector B324 (driver side), B502 (passenger side) terminal 15
and ground with oscilloscope.

OK or NG

OK

>> Vehicle speed signal is OK.

NG

>> GO TO 2.

2. 

CHECK VEHICLE SPEED SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter and seat control unit connector.

3.

Check continuity between combination meter connector M19
terminal 14 and seat control unit connector B324 (driver side),
B502 (passenger side) terminal 15.

OK or NG

OK

>> Check combination meter. Refer to 

DI-15

NG

>> Repair or replace harness between combination meter

and seat control unit.

5 (L/Y) – Ground

: Approx. 5V

PIIA4675E

Connector

Terminals 

Condition

Signal

(Reference value)

(+)

(-)

B324
B502

15

(B/R)

Ground

 when 
vehicle 
speed is 
approx.40 
km/h (25 
MPH)

PIIA4073E

ELF1080D

14 (W/G) – 15 (B/R)

: Continuity should exist.

PIIB3164E

POWER SEAT

SE-123

C

D

E

F

G

H

J

K

L

M

A

B

SE

Check Sliding Limit Switch Signal

NIS000IG

1. 

CHECK SLIDING LIMIT SWITCH SIGNAL

When operation condition consists, check voltage between seat control unit connector B324 (driver side),
B502 (passenger side) terminal 13 and ground.

OK or NG

OK

>> Sliding limit switch (forward) signal is OK.

NG

>> GO TO 2. 

2. 

CHECK HARNESS CONTINUITY

1.

Disconnect seat control unit and sliding limit switch connector.

2.

Check continuity between seat control unit connector B324
(driver side),B502 (passenger side) terminal 13 and sliding limit
switch connector B329 (driver side), B509(passenger side) ter-
minal 1.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between seat control unit and

sliding limit switch.

3. 

CHECK SLIDING LIMIT SWITCH CIRCUIT

Check continuity between sliding limit switch connector B329 (driver
side), B509 (passenger side) terminal 2 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK SLIDING LIMIT SWITCH

Check continuity between sliding limit switch connector B329 (driver
side), B509 (passenger side) terminals 1 and 2.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Replace sliding limit switch.

Connector

Terminals

Condition

Voltage (V)

(Approx.)

(+)

(-)

B324
B502

13 (OR)

Ground

The seat slide front most part

0

Other than above

5

PIIA4076E

13 (OR) - 1 (OR)

: Continuity should exist.

PIIB4557E

2 (B) - Ground

: Continuity should exist.

PIIB4558E

Connector

Terminal

Condition

Continuity

B329
B509

1

2

When sliding limit switch fully front

Yes

Other than above

No

PIIB4559E

SE-124

POWER SEAT

Check Seatback Switch Signal

NIS000IH

1. 

CHECK SEATBACK SWITCH SIGNAL

Check voltage between seat control unit connector and ground.

OK or NG

OK 

>> Seatback switch signal is OK.

NG

>>  GO TO 2.

2. 

CHECK HARNESS CONTINUITY

1.

Disconnect seat control unit and seatback switch connector.

2.

Check continuity between seat control unit connector B324
(driver side), B502 (passenger side) terminal 2 and seatback
switch connector B348 (driver side), B518 (passenger side) ter-
minal 1.

OK or NG

OK

>> GO TO 3.

NG 

>> Repair or replace harness between seat control unit and

seatback switch.

3. 

CHECK SEATBACK SWITCH CIRCUIT

Check continuity between seatback switch connector B348 (driver
side), B518 (passenger side) terminal 2 and ground.

OK or NG

OK >> GO 

TO 

4.

NG

>> Repair or replace harness.

4. 

CHECK SEATBACK SWITCH

Check continuity between seatback switch connector B348 (driver
side), B518 (passenger side) terminals 1and 2.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Replace seatback switch.

Connector

Terminal

Condition

Voltage (V)

(Approx.)

B324
B502

2 (L)

Ground

When seatback switch forward

0

Other than above

5

PIIA4075E

2 (L) - 1 (L)

: Continuity should exist.

PIIB4560E

2 (B) - Ground

: Continuity should exist.

PIIB4561E

Connector

Terminal

Condition

Continuity

B348
B518

1

2

When seatback switch forward

Yes

Other than above

No

PIIB4562E

POWER SEAT

SE-125

C

D

E

F

G

H

J

K

L

M

A

B

SE

Check Power Walk-in Switch Signal

NIS000II

1. 

CHECK POWER WALK-IN SWITCH SIGNAL

Check voltage between seat control unit connector and ground.

OK or NG

OK

>> Power walk-in switch signal is OK.

NG

>> GO TO 2.

2. 

CHECK HARNESS CONTINUITY

1.

Disconnect seat control unit and power walk-in switch connector.

2.

Check continuity between seat control unit connector B324
(driver side), B502 (passenger side) terminal 4 and power walk-
in switch connector B349 (driver side), B519 (passenger side)
terminal 1.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between seat control unit and

power walk-in switch.

3. 

CHECK POWER WALK-IN SWITCH CIRCUIT

Check continuity between power walk-in switch connector B349
(driver side), B519 (passenger side) terminal 2 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between seat control unit and

power walk-in switch.

4. 

CHECK POWER WALK-IN SWITCH

Check continuity between power walk-in switch connector B349
(driver side), B519 (passenger side) terminals 1and 2.

OK or NG

OK 

>> Check the condition of the harness and the connector.

NG

>> Replace power walk-in switch.

Connector

Terminal

Condition

Voltage (V)

(Approx.)

B324
B502

4 (G)

Ground

When power walk-in switch ON

0

Other than above

5

PIIA4077E

4 (G) - 1 (G)

: Continuity should exist.

PIIB4563E

2 (B) - Ground

: Continuity should exist.

PIIB4564E

Connector

Terminals

Condition

Continuity

B349
B519

1

2

When power walk-in switch ON

Yes

Other than above

No

PIIB4565E