Infiniti M35/M45 Y50. Manual - part 1078

POWER SEAT(REAR)

SE-109

C

D

E

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A

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SE

Check Automatic Return Cancel Switch Circuit

NIS0027D

1. 

CHECK AUTOMATIC RETURN CANCEL SWITCH POWER SUPPLY-1

1.

Turn ignition switch OFF.

2.

Check voltage between rear seat control unit connector and
ground.

OK or NG

OK

>> Automatic return cancel switch circuit is OK.

NG

>> GO TO 2.

2. 

CHECK AUTOMATIC RETURN CANCEL SWITCH HARNESS

1.

Disconnect rear seat control unit connector and automatic return cancel switch connector.

2.

Check continuity between rear seat control unit connector and
automatic return cancel 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 automatic return cancel switch.

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Rear seat 

control unit 

connector

Terminal 

B304 (LH)

B354 (RH)

11

Ground

Automatic return 
cancel switch ON 
and, rear door open

5

Other than above.

0

PIIB5925E

A

B

Continuity 

Rear seat control 

unit connector

Terminal

Automatic return 

cancel switch 

connector

Terminal

B304 (LH) 

B354 (RH)

11

B508

1

Yes

A

Ground

Continuity 

Rear seat control unit connector

Terminal

B304 (LH) 

B354 (RH)

11

No

PIIB5926E

SE-110

POWER SEAT(REAR)

3. 

CHECK AUTOMATIC RETURN CANCEL 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.

Check Automatic Return Cancel Switch

NIS0027E

1. 

CHECK AUTOMATIC RETURN CANCEL SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect automatic return cancel switch connector.

3.

Check continuity between automatic return cancel switch as fol-
lows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace automatic return cancel switch.

2. 

CHECK AUTOMATIC RETURN CANCEL SWITCH GROUND HARNESS

Check continuity between automatic return cancel switch connector
and ground.

OK or NG

OK

>> Check the harness and connector.

NG

>> Repair or replace harness between automatic return

cancel switch and ground.

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Rear seat control 

unit connector

Terminal

B304 (LH)

B354 (RH)

11

Ground

5

PIIB5925E

Automatic return 

cancel switch 

connector

Terminal Condition

Continuity 

B508

1

3

Automatic return 
cancel switch

CANCEL

Yes

ON

No

PIIB5927E

Terminal

Continuity 

Automatic return cancel 

switch connector

Terminal

Ground

 B508

3

Yes

PIIB5928E

POWER SEAT(REAR)

SE-111

C

D

E

F

G

H

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Check Rear Door Switch Circuit

NIS0027F

1. 

CHECK REAR DOOR SWITCH POWER SUPPLY-1

1.

Turn ignition switch OFF.

2.

Check voltage between rear seat control unit connector and
ground.

OK or NG

OK

>> Rear door switch circuit is OK.

NG

>> GO TO 2.

2. 

CHECK REAR DOOR SWITCH HARNESS

1.

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

2.

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

3. 

CHECK REAR DOOR SWITCH

Check continuity between rear door switch and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Replace rear door switch.

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Rear seat 

control unit 

connector

Terminal 

B304 (LH)

B354 (RH)

16

Ground

Rear door open.

0

Rear door closed.

Battery voltage

PIIB5929E

A

B

Continuity 

Rear seat control 

unit connector

Terminal

Rear door switch 

connector

Terminal

B304 (LH) 

B354 (RH)

16

B53 (LH) 

B403 (RH)

2 Yes

A

Ground

Continuity 

Rear seat control unit connector

Terminal

B304 (LH) 

B354 (RH)

16

No

PIIB5930E

Rear door switch 

connector

Terminal Condition

Continuity 

B53 (LH)

B403 (RH)

2

Ground

Rear door open.

Yes

Rear door closed.

No

PIIB5931E

SE-112

POWER SEAT(REAR)

4. 

CHECK REAR DOOR 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.

Check Rear Seat Sliding Sensor Circuit

NIS0027G

1. 

CHECK REAR SEAT SLIDING SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

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

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> GO TO 2.

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Rear seat control 

unit connector

Terminal

B304 (LH)

B354 (RH)

16

Ground

Battery voltage

PIIB5929E

Terminal

Condition

Signal

(Reference valve)

(+)

(–)

Rear seat 

control unit 

connector

Terminal 

B304 (LH)

B354 (RH)

12

Ground

Sliding 

device 

active

PIIB5932E

SIIA0690J