Infiniti Q45. Manual - part 846

HEATED SEAT

SE-139

C

D

E

F

G

H

J

K

L

M

A

B

SE

4. 

CHECK FRONT SEAT CUSHION HEATER HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect front seatback heater connector and front seat cush-
ion heater connector.

3.

Check continuity between front seatback heater connector B152
(Driver side), B352 (Passenger side) terminal C and front seat
cushion heater connector B151 (Driver side), B351 (Passenger
side) terminal C.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace harness between front seat back and

font seat cushion.

5. 

CHECK FRONT SEAT CUSHION GROUND HARNESS

Check continuity between front seat cushion heater connector B151
(Driver side), B351 (Passenger side) terminal 15C and ground.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace harness between front seat  cushion

heater and ground.

6. 

CHECK FRONT SEAT CUSHION

Does the heater operate normally when the seat cushion is exchanged?

Does seat cushion get warm?

YES

>> Replace rear seatback.

NO

>> Check connector for damage or loose connection.

Check Front Heated Seat Circuit 2

NIS0014J

1. 

CHECK FRONT SEATBACK HEATER 1

1.

Turn ignition switch ON.

2.

Check voltage between front heated seat switch  and  ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

C (SB) 

−

 C (SB)

:Continuity should exist

PIIB0402E

15C (B) 

−

 Ground

:Continuity should exist

PIIA4108E

Connector

Terminal

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

M94

 (Driver side)

2 (L/W)

Ground

Turn ignition switch ON
Front heated seat switch LOW

 Battery 

voltage

Front heated seat switch OFF

0

M95

(Passenger 

side)

2 (P)

Turn ignition switch ON
Front heated seat switch LOW

 Battery 

voltage

Front heated seat switch OFF

0

PIIA4109E

SE-140

HEATED SEAT

2. 

CHECK FRONT HEATED SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front heated seat switch connector.

3.

Check continuity between front heated seat switch as follows.

OK or NG

OK

>> Check connector for damage or loose connection.

NG

>> Replace front heated seat switch.

3. 

CHECK FRONT SEATBACK HEATER HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect front heated seat switch connector and front seat-
back heater connector.

3.

Check continuity between front heated seat switch connector
M94(driver side), M95 (passenger side) terminal 2 and front
seatback heater connector B152(driver side), B352(passenger
side) terminal 62.

4.

Check continuity between front heated seat switch connector M94(driver side), M95 (passenger side) ter-
minal 2 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between front heated seat switch and front seatback heater.

4. 

CHECK FRONT SEATBACK HEATER

Check continuity between front seatback heater B152 (driver side),
B352 (passenger side) terminal C and 62.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Replace front seatback heater.

Terminal

Condition

Continuity

1

2

Front heated seat switch LOW

Yes

Other than above

No

PIIA4110E

Driver side

2 (L/W) – 62 (L)

: Continuity should exist

Passenger side

2 (P) – 62 (L)

: Continuity should exist

Driver side

2 (L/W) – Ground

: Continuity should not exist

Passenger side

2 (P) – Ground

: Continuity should not exist

PIIA4029E

C (SB) 

−

 62 (L)

: Continuity should exist

PIIA4111E

HEATED SEAT

SE-141

C

D

E

F

G

H

J

K

L

M

A

B

SE

Check Front Heated Seat Circuit 3

NIS0014K

1. 

CHECK FRONT HEATED SEAT SWITCH

1.

Turn ignition switch ON.

2.

Check voltage between front heated seat switch  and  ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2. 

CHECK FRONT HEATED SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front heated seat switch connector.

3.

Check continuity between front heated seat switch as follows.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Replace front heated seat switch.

Connector

Terminal

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

M94

 (Driver side)

3 (R/Y)

Ground

Turn ignition switch ON
Front heated seat switch HIGH

 Battery 

voltage

Front heated seat switch OFF

0

M95

(Passenger 

side)

3 (Y)

Turn ignition switch ON
Front heated seat switch HIGH

 Battery 

voltage

Front heated seat switch OFF

0

PIIA4030E

Terminal

Condition

Continuity

1

3

Front heated seat switch HIGH

Yes

Other than above

No

PIIA4031E

SE-142

HEATED SEAT

3. 

CHECK FRONT SEATBACK HEATER HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect front heated seat switch connector and front seat-
back heater connector.

3.

Check continuity between front heated seat switch connector
M94(driver side), M95 (passenger side) terminal 3 and front
seatback heater connector B152(driver side), B352(passenger
side) terminal 63.

4.

Check continuity between front heated seat switch connector M94(driver side), M95 (passenger side) ter-
minal 3 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between front heated seat switch and front seatback heater.

4. 

CHECK FRONT SEATBACK HEATER

Check continuity between front seatback heater B152 (driver side),
B352 (passenger side) terminal C and 63.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Replace front seatback heater.

Check Front Heated Seat Switch Ground Circuit

NIS0014L

1. 

CHECK FRONT HEATED SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front heated seat switch connector.

3.

Check continuity between front heated seat switch as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace front heated seat switch.

Driver side

3 (R/Y) – 63 (B)

: Continuity should exist

Passenger side

3 (Y) – 63 (B)

: Continuity should exist

Driver side

3 (R/Y) – Ground

: Continuity should not exist

Passenger side

3 (Y) – Ground

: Continuity should not exist

PIIB1747E

C (SB) 

−

 63 (B)

: Continuity should exist

PIIA4112E

Terminal

Condition

Continuity

2

4

Front heated seat switch HIGH

Yes

Other than above

No

PIIA4033E