Infiniti M35/M45 Y50. Manual - part 1077

POWER SEAT(REAR)

SE-105

C

D

E

F

G

H

J

K

L

M

A

B

SE

Check Rear Seat Control Unit Power Supply and Ground Circuit

NIS0027A

1. 

CHECK REAR SEAT CONTROL UNIT POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Check voltage between rear seat control unit connector and
ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness between circuit breaker and rear seat control unit.

2. 

CHECK REAR POWER SEAT CONTROL UNIT GROUND CIRCUIT

1.

Disconnect rear seat control unit connector.

2.

Check continuity between rear seat control unit connector and
ground.

OK or NG

OK

>> Rear seat control unit power supply and ground circuit is OK.

NG

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

Terminal

Voltage (V)

(Approx.)

(+)

(–)

Rear seat control 

unit connector

Terminal 

B303 (LH)

B353 (RH)

1

Ground

Battery voltage

PIIB5917E

Terminal

Continuity 

Rear seat control

unit connector

Terminal

Ground

B303 (LH)

B353 (RH)

8

Yes

B304 (LH)

B354 (RH)

13

PIIB5918E

SE-106

POWER SEAT(REAR)

Check Rear Seat Sliding Motor Circuit

NIS0027B

1. 

CHECK REAR SEAT SLIDING MOTOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Check voltage between rear seat control unit connector and
ground.

OK or NG

OK

>> GO TO 2.

NG

>> Replace rear seat control unit.

2. 

CHECK REAR SEAT SLIDING MOTOR HARNESS

1.

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

2.

Check continuity between rear seat control unit connector and
rear seat sliding motor connector.

3.

Check continuity between rear seat control unit connector and
ground.

OK or NG

OK

>> Replace rear seat sliding motor.

NG

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

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Rear seat 

control unit 

connector

Terminal

B303 (LH)

B353 (RH)

2

Ground

Rear power 
seat switch 

Forward

Battery voltage

Other than above.

0

7

Rear power 
seat switch 

Backward

Battery voltage

Other than above.

0

PIIB5919E

A

B

Continuity 

Rear seat control 

unit connector

Terminal

Rear seat sliding 

motor connector

Terminal

B303 (LH)

B353 (RH)

2

B311 (LH)

B361 (RH)

3

Yes

7

4

A

Ground

Continuity 

Rear seat control unit connector

Terminal

B303 (LH)

B353 (RH)

2

No

7

PIIB5920E

POWER SEAT(REAR)

SE-107

C

D

E

F

G

H

J

K

L

M

A

B

SE

Check Rear Power Seat Switch Circuit

NIS0027C

1. 

CHECK REAR POWER SEAT SWITCH POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Check voltage between rear seat control unit connector and
ground.

OK or NG

OK

>> Replace rear seat control unit.

NG

>> GO TO 2.

2. 

CHECK REAR POWER SEAT SWITCH HARNESS

1.

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

2.

Check continuity between rear seat control unit connector and
rear power seat switch connector.

3.

Check continuity between rear seat control unit connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

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

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Rear seat 

control unit 

connector

Terminal

B304 (LH)

B354 (RH)

10

Ground

Rear power 
seat switch 

Forward

0

Other than above.

Battery voltage

15

Rear power 
seat switch 

Backward

0

Other than above.

Battery voltage

PIIB5921E

A

B

Continuity 

Rear seat control 

unit connector

Terminal

Rear power seat 

switch connector

Terminal

B304 (LH)

B354 (RH)

10

B504 (LH)

B555 (RH)

2

Yes

15

1

A

Ground

Continuity 

Rear seat control unit connector

Terminal

B304 (LH)

B354 (RH)

10

No

15

PIIB5922E

SE-108

POWER SEAT(REAR)

3. 

CHECK REAR POWER SEAT SWITCH

Check continuity between rear power seat switch as follows.

OK or NG

OK

>> GO TO 4.

NG

>> Replace rear power seat switch.

4. 

CHECK REAR POWER SEAT SWITCH GROUND CIRCUIT

Check continuity between rear power seat switch connector and
ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace harness between rear power seat

switch and ground.

5. 

CHECK REAR POWER SEAT SWITCH POWER SUPPLY-2

1.

Connect rear seat control unit connector.

2.

Check voltage between rear seat control unit connector and
ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Replace rear seat control unit.

Rear power seat 

switch connector

Terminal Condition

Continuity 

B504 (LH)

B555 (RH)

1

3

Rear power 
seat switch 

Backward

Yes

Other than above.

No

2

Rear power 
seat switch 

Forward

Yes

Other than above.

No

PIIB5923E

Terminal

Continuity 

Rear power seat 

switch connector

Terminal

Ground

B504 (LH)

B555 (RH)

3

Yes

PIIB5924E

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Rear seat control 

unit connector

Terminal

B304 (LH)

B354 (RH)

10

Ground

Battery voltage

15

PIIB5921E