Nissan Pathfinder. Manual - part 1016

SE-62

< DTC/CIRCUIT DIAGNOSIS >

SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR

SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR

Component Function Check

INFOID:0000000009176483

1.

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR FUNCTION

Check whether or not the temperature of the seat cushion thermal electric device changes in accordance with

the HEAT or COOL switch operation of the climate controlled seat control switch.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to 

SE-62, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009176484

Regarding Wiring Diagram information, refer to 

SE-37, "Wiring Diagram"

.

1.

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR SIGNAL

1. Turn ignition switch ON.

2. Check voltage between seat cushion thermal electric device harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR CIRCUIT

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 harness connector and seat cushion thermal

electric device harness connector. 

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

Is the inspection result normal?

YES

>> Replace climate controlled seat control unit. Refer to 

SE-86, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR GROUND CIRCUIT

1. Turn ignition switch OFF.

(+)

(-)

Condition

Voltage (V)

(Approx.)

Seat cushion thermal electric device

Connector

Terminal

Driver side

B206

3

Ground

Climate controlled seat 
operated

1 - 5

Passenger side

B308

Climate controlled seat control unit

Seat cushion thermal electric device

Continuity 

Connector

Terminal

Connector

Terminal

Driver side

B203

14

B206

3

Yes

Passenger side

B303

B308

Climate controlled seat control unit

Ground

Continuity 

Connector

Terminal

Driver side

B203

14

No

Passenger side

B303

SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR

SE-63

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

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 harness connector and seat cushion thermal

electric device harness connector. 

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR

Check seat cushion thermal electric device sensor. Refer to 

SE-63, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> Replace seat cushion thermal electric device. 

SE-88, "Seat Cushion Thermal Electric Device"

.

Component Inspection

INFOID:0000000009176485

1.

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR

1. Turn ignition switch OFF.

2. Disconnect seat cushion thermal electric device connector.

3. Check resistance between seat cushion thermal electric device terminals.

*

 : When sensor temperature is 25

°C (77°F).

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace seat cushion thermal electric device. Refer to 

SE-88, "Seat Cushion Thermal Electric

Device"

.

Climate controlled seat control unit

Seat cushion thermal electric device

Continuity 

Connector

Terminal

Connector

Terminal

Driver side

B203

13

B206

4

Yes

Passenger side

B303

B308

Climate controlled seat control unit

Ground

Continuity 

Connector

Terminal

Driver side

B203

13

No

Passenger side

B303

Seat cushion thermal electric device

Resistance

(Approx.)

Terminal

3

4

1000

Ω

*

SE-64

< DTC/CIRCUIT DIAGNOSIS >

CLIMATE CONTROLLED SEAT BLOWER MOTOR

CLIMATE CONTROLLED SEAT BLOWER MOTOR

Component Function Check

INFOID:0000000009176486

1.

CHECK CLIMATE CONTROLLED SEATBACK BLOWER MOTOR FUNCTION

When turning the climate controlled seat switch to the HEAT or COOL mode position, check that the climate

controlled seatback blower is operated in each specific mode.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to 

SE-64, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009176487

Regarding Wiring Diagram information, refer to 

SE-37, "Wiring Diagram"

.

1.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR POWER SUPPLY

1. Turn ignition switch ON.

2. Check voltage between climate controlled seat blower motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect climate controlled seat blower motor connector and climate controlled seat control unit con-

nector.

3. Check continuity between climate controlled seat blower motor harness connector and climate controlled

seat control unit harness connector. 

4. Check continuity between climate controlled seat blower motor harness connector and ground.

Is the inspection result normal?

(+)

(–)

Condition

Voltage (V)

(Approx.)

Climate controlled seat blower motor

Connector

Terminal

Driver side

B213

2

Ground

Climate controlled seat 
switch

HEAT mode

12

COOL mode

Other than above

0

Passenger side

B307

Climate controlled seat 
switch

HEAT mode

12

COOL mode

Other than above

0

Climate controlled seat blower motor

Climate controlled seat control unit

Continuity 

Connector

Terminal

Connector

Terminal

Driver side

B213

2

B203

7

Yes

Passenger side

B307

B303

Climate controlled seat blower motor

Ground

Continuity 

Connector

Terminal

Driver side

B213

2

No

Passenger side

B307

CLIMATE CONTROLLED SEAT BLOWER MOTOR

SE-65

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

YES

>> Replace climate controlled seat control unit. Refer to 

SE-86, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL

Check voltage between climate controlled seat blower motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect climate controlled seat blower motor connector and climate controlled seat control unit con-

nector.

3. Check continuity between climate controlled seat blower motor harness connector and climate controlled

seat control unit harness connector. 

4. Check continuity between climate controlled seatback blower motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace climate controlled seat control unit. Refer to 

SE-86, "Removal and Installation"

.

NO

>> Repair or replace harness.

5.

CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect climate controlled seat blower motor and climate controlled seat control unit connector.

3. Check continuity between climate controlled seat blower motor harness connector and climate controlled

seat control unit harness connector. 

(+)

(–)

Condition

Voltage (V)

(Approx.)

Climate controlled seat blower motor

Connector

Terminal

Driver side

B213

3

Ground

Climate controlled seat 
switch

HEAT

5.5 - 8

COOL

HI

11.2

MID

8

LO

6.5

Other than above

0

Passenger side

B307

Climate controlled seat 
switch

HEAT

5.5 - 8

COOL

HI

11.2

MID

8

LO

6.5

Other than above

0

Climate controlled seat blower motor

Climate controlled seat control unit

Continuity 

Connector

Terminal

Connector

Terminal

Driver side

B213

3

B203

4

Yes

Passenger side

B307

B303

Climate controlled seat blower motor

Ground

Continuity 

Connector

Terminal

Driver side

B213

3

No

Passenger side

B307