Infiniti M35/M45 Y50. Manual - part 1085

CLIMATE CONTROLLED SEAT

SE-137

C

D

E

F

G

H

J

K

L

M

A

B

SE

2. 

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit connector and seat cushion thermal electric device con-
nector.

3.

Check continuity between climate controlled seat control unit
connector and seat cushion thermal electric device connector.

4.

Check continuity between climate controlled seat control unit connector and ground.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Repair or replace harness between climate controlled seat control unit and seat cushion thermal

electric device.

Check Seatback Thermal Electric Device Circuit

NIS0027V

1. 

CHECK SEATBACK THERMAL ELECTRIC DEVICE POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between climate controlled seat control unit con-
nector and ground.

OK or NG

OK

>> Seatback thermal electric device circuit is OK.

NG

>> GO TO 2.

A

B

Continuity 

Climate 

controlled seat 

control unit 

connector

Terminal

Seat cushion

 thermal electric 

device

connector

Terminal

B283

(driver side)

B293 

(passenger side)

5

B285 

(driver side) 

B295 

(passenger side)

4

Yes

6

6

A

Ground

Continuity 

Climate controlled seat 

control unit connector

Terminal

B283 (driver side) 

B293 (passenger side)

5

No

6

PIIB6081E

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Climate 

controlled

seat control 

unit connector

Terminal 

B283 

(driver side) 

B293

(passenger 

side)

15

Ground

Climate 
controlled
seat switch

HEAT or 

COOL

0 -  Battery 

voltage

Other than above.

0

16

Climate 
controlled
seat switch

COOL or 

HEAT

0 - Battery 

voltage

Other than above.

0

PIIB6082E

SE-138

CLIMATE CONTROLLED SEAT

2. 

CHECK SEATBACK THERMAL ELECTRIC DEVICE HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit connector and seatback thermal electric device connector.

3.

Check continuity between climate controlled seat control unit
connector and seatback thermal electric device connector.

4.

Check continuity between climate controlled seat control unit connector and ground.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Repair or replace harness between climate controlled seat control unit and seatback thermal elec-

tric device.

Check Seat Cushion Thermal Electric Device Sensor Circuit

NIS0027W

1. 

CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between climate controlled seat control unit con-
nector and ground.

OK or NG

OK

>> Climate controlled seat control unit circuit is OK.

NG

>> GO TO 2.

A

B

Continuity 

Climate 

controlled seat 

control unit 

connector

Terminal

Seatback thermal 

electric device 

connector

Terminal

B283

(driver side)

 B293

(passenger side)

15

B285 

(driver side) 

B295

(passenger side)

4

Yes

16

6

A

Ground

Continuity 

Climate controlled seat 

control unit connector

Terminal

B283 (driver side) 

B293 (passenger side)

15

No

16

PIIB6083E

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Climate

 controlled seat 

control unit 

 connector

Terminal 

B283

(driver side) 

B293

(passenger side)

22

Ground

Blower motor 

operated

0.5 - 4

PIIB6084E

CLIMATE CONTROLLED SEAT

SE-139

C

D

E

F

G

H

J

K

L

M

A

B

SE

2. 

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit connector and seat cushion thermal electric device con-
nector.

3.

Check continuity between climate controlled seat control unit
connector and seat cushion thermal electric device connector.

4.

Check continuity between climate controlled seat control unit connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between climate controlled seat control unit and seat cushion thermal

electric device.

3. 

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR

Check resistance between seat cushion thermal electric device con-
nector.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Replace seat cushion thermal electric device.

A

B

Continuity 

Climate

 controlled seat 

control unit

connector

Terminal

Seat cushion

 thermal electric

device connector

Terminal

B283

(driver side)

B293

(passenger side)

21

B285

(driver side)

B295

(passenger side)

2

Yes

22

1

A

Ground

Continuity 

Climate controlled seat 

control unit connector

Terminal

B283 (driver side)

 B293 (passenger side)

21

No

22

PIIB6085E

Seat cushion  thermal 

electric  device connector

Terminal 

Resistance (K

Ω

) 

(Approx.)

B220

 (driver side)

B258

 (passenger side)

1

2

2

PIIB6086E

SE-140

CLIMATE CONTROLLED SEAT

Check Seatback Thermal Electric Device Sensor Circuit 

NIS0027X

1. 

CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between climate controlled seat control unit con-
nector and ground.

OK or NG

OK

>> Climate controlled seat control unit circuit is OK.

NG

>> GO TO 2.

2. 

CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit connector and seatback thermal electric device connector.

3.

Check continuity between climate controlled seat control unit
connector and seatback thermal electric device connector.

4.

Check continuity between climate controlled seat control unit connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between climate seat control unit and seatback thermal electric device.

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(–)

Climate 

controlled seat 

control unit 

connector

Terminal 

B283

(driver side) 

B293

(passenger side)

23

Ground

Blower motor

operated

0.5 - 4

PIIB6087E

A

B

Continuity 

Climate 

controlled seat 

control unit

connector

Terminal

Seatback thermal 

electric device

connector

Terminal

B283

(driver side)

 B293 

(passenger side)

23

B220 

 (driver side)

B258 

 (passenger side)

1

Yes

24

2

A

Ground

Continuity 

Climate controlled seat 

control unit connector

Terminal

B283 (driver side)

 B293 (passenger side)

23

No

24

PIIB6088E