Infiniti M35/M45 Y50. Manual - part 1091

HEATED SEAT

SE-161

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Check Rear Heated Seat Circuit

NIS0028C

1. 

CHECK REAR SEAT CONTROL UNIT

1.

Turn ignition switch ON.

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 HEATER HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect rear seat control unit and rear seat cushion heater connector.

3.

Check continuity between rear seat control unit connector and
rear seat cushion heater connector.

4.

Check continuity between rear seat control unit connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace or replace harness between rear seat control unit and rear seat cushion heater.

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Rear seat 

control  unit 

connector

Terminal 

B303 (LH)

B353 (RH)

5

Ground

Rear heated

 seat switch

HIGH

Battery voltage

Other than above.

0

6

Rear heated

 seat switch

LOW

Battery voltage

Other than above.

0

PIIB6010E

A

B

Continuity 

Rear seat control 

unit connector

Terminal

Rear seat cushion 

heater connector

Terminal

B303 (LH) 

B353 (RH)

5

 B309 (LH)

B359 (RH)

1

Yes

6

2

A

Ground

Continuity 

Rear seat control

 unit connector

Terminal

 B303 (LH)

B353 (RH)

5

No

6

PIIB6011E

SE-162

HEATED SEAT

3. 

CHECK REAR SEAT HEATER CIRCUIT

1.

Connect rear seat control unit and rear seat cushion heater connector.

2.

Turn ignition switch ON.

3.

Check voltage between rear seat cushion heater connector and
ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Replace rear seat cushion heater.

Check Rear Seatback Heater Circuit

NIS0028D

1. 

CHECK REAR SEAT HEATER CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between rear seat cushion heater connector and
ground.

OK or NG

OK

>> GO TO 2.

NG

>> Replace rear seat cushion heater.

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Rear seat 

cushion heater 

connector

Terminal 

B309 (LH)

B359 (RH)

3

Ground

Rear heated

 seat switch

HIGH

Battery voltage

LOW

6

Other than above.

0

PIIB6012E

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Rear seat 

cushion heater 

connector

Terminal 

 B309 (LH)

B359 (RH)

3

Ground

Rear heated 

seat switch

HIGH

Battery voltage

LOW

6

Other than above.

0

PIIB6012E

HEATED SEAT

SE-163

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D

E

F

G

H

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K

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A

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SE

2. 

CHECK REAR SEAT HEATER HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect rear seat cushion heater and rear seatback heater connector.

3.

Check continuity between rear seat cushion heater connector
and rear seatback heater connector.

4.

Check continuity between rear seat cushion heater connector
and ground.

OK or NG

OK >> GO 

TO 

3.

NG

>> Replace or replace harness rear seat cushion heater and rear seatback heater.

3. 

CHECK REAR SEAT HEATER GROUND CIRCUIT

Check continuity between rear seatback heater connector and
ground.

OK or NG

OK

>> Replace rear seatback heater.

NG 

>> Replace or replace harness rear seatback heater and

ground.

A

B

Continuity 

Rear seat cushion 

heater connector

Terminal

Rear seatback

heater connector

Terminal

B309 (LH) 

B359 (RH)

3

 B310 (LH) 

B360 (RH)

1

Yes

A

Ground

Continuity 

Rear seat cushion 

heater connector

Terminal

 B309 (LH) 

B359 (RH)

3

No

PIIB6013E

Terminal

Continuity 

Rear seatback

heater connector

Terminal

Ground

B310 (LH)

B360 (RH)

2

Yes

PIIB6014E

SE-164

FRONT SEAT

FRONT SEAT

PFP:87000

Driver's Seat Components

NIS0028E

PIIB5328E