Infiniti M35/M45 Y50. Manual - part 1089

HEATED SEAT

SE-153

C

D

E

F

G

H

J

K

L

M

A

B

SE

Check Rear Heated Seat Power Supply and Ground Circuit

NIS00287

1. 

CHECK FUSIBLE LINK AND FUSE

●

Check 50A fusible link (letter F located in the fuse and fusible link box).

●

Check 15A fuse (No.38, located in fuse block).

●

Check circuit breaker.

NOTE:
Refer to 

SE-144, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> GO TO 2.

NG

>> If fuse or circuit breaker is blown, be sure to eliminate cause of malfunction before installing new

fuse or new circuit breaker, refer to 

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

CHECK HEATED SEAT RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Check voltage between IPDM E/R (heated seat relay) connector
and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between fuse block (J/B) and IPDM E/R (heated seat relay).

3. 

CHECK HEATED SEAT RELAY GROUND CIRCUIT

1.

Disconnect IPDM E/R (heated seat relay) connector.

2.

Check continuity between IPDM E/R (heated seat relay) con-
nector and ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between IPDM E/R (heated

seat relay) and ground.

Terminal

Voltage (V)

(Approx.)

(+)

(–)

IPDM E/R

 (heated seat relay)

 connector

Terminal 

E6

14 Ground

Battery 

voltage

PIIB5995E

Terminal

Continuity 

IPDM E/R

 (heated seat relay)

 connector

Terminal

Ground

E9

54 Yes

PIIB5996E

SE-154

HEATED SEAT

Check Rear Seat Control Unit Power Supply and Ground Circuit

NIS00288

1. 

CHECK REAR SEAT CONTROL UNIT POWER SUPPLY CIRCUIT (BAT)

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 SEAT CONTROL UNIT POWER SUPPLY CIRCUIT (IGN)

1.

Turn ignition switch ON.

2.

Check voltage between rear seat control unit connector and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

Terminal

Voltage (V)

(Approx.)

(+)

(–)

Rear seat control 

unit connector

Terminal 

B303 (LH)

B353 (RH)

1

Ground

Battery voltage

PIIB5997E

Terminal

Voltage (V)

(Approx.)

(+)

(–)

Rear seat control 

unit connector

Terminal 

B303 (LH)

B353 (RH)

4

Ground

Battery voltage

PIIB5998E

HEATED SEAT

SE-155

C

D

E

F

G

H

J

K

L

M

A

B

SE

3. 

CHECK REAR SEAT CONTROL UNIT HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R (heated seat relay) and rear seat control unit connector.

3.

Check continuity between IPDM E/R (heated seat relay) con-
nector and rear seat control unit connector.

4.

Check continuity between rear seat control unit connector and
ground.

OK or NG

OK >> GO 

TO 

4.

NG

>> Repair or replace harness between rear seat control unit and IPDM E/R (heated seat relay).

4. 

CHECK REAR SEAT CONTROL UNIT GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect rear seat control unit connector.

3.

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.

A

B

Continuity 

Rear seat control 

unit connector

Terminal

IPDM E/R

 (heated seat relay) 

connector

Terminal

 B303 (LH)

4

E6

12

Yes

B353 (RH)

E5

9 

A

Ground

Continuity 

Rear seat control unit connector

Terminal

B303 (LH)

B353 (RH)

4

No

PIIB5999E

Terminal

Continuity 

Rear seat control 

 unit connector

Terminal

Ground

B303 (LH)

B353 (RH)

8

Yes

B304 (LH)

B354 (RH)

13

PIIB6000E

SE-156

HEATED SEAT

Check Rear Heated Seat Switch Circuit

NIS00289

1. 

CHECK REAR HEATED SEAT SWITCH POWER SUPPLY-1 

1.

Turn ignition switch ON.

2.

Check voltage between rear seat control unit connector and
ground.

OK or NG

OK 

>> Rear heated seat switch circuit is OK.

NG

>> GO TO 2.

2. 

CHECK REAR HEATED SEAT SWITCH HARNESS

1.

Turn ignition switch OFF.

2.

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

3.

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

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Rear seat 

control unit 

connector

Terminal 

 B304 (LH)

 B354 (RH)

17

Ground

Rear heated

seat switch 

HIGH

0

Other than above.

5

18

Rear heated

 seat switch

LOW

0

Other than above.

5

PIIB6001E

A

B

Continuity 

Rear seat control

 unit connector

Terminal

Rear heated seat 

switch connector

Terminal

B304 (LH) 

B354 (RH)

17

B507 (LH) 

B558 (RH)

1

Yes

18

2

A

Ground

Continuity 

Rear seat control unit connector

Terminal

B304 (LH)

B354 (RH)

17

No

18

PIIB6002E