Nissan Maxima. Manual — part 1011

SEAT CUSHION THERMAL ELECTRIC DEVICE

SE-17

< DTC/CIRCUIT DIAGNOSIS >

[WITH CLIMATE CONTROLLED SEATS]

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

YES

>> Inspection End.

NO

>> Replace thermal electric device. Refer to

SE-65, "Exploded View"

.

SE-18

< DTC/CIRCUIT DIAGNOSIS >

[WITH CLIMATE CONTROLLED SEATS]

SEATBACK THERMAL ELECTRIC DEVICE

SEATBACK THERMAL ELECTRIC DEVICE

Description

INFOID:0000000010049473

Provides cooling and heat for the seatback.

Component Function Check

INFOID:0000000010049474

1.

CHECK SEATBACK THERMAL ELECTRIC DEVICE FUNCTION

1. Turn the climate controlled seat switch to the H (Heat) HI position and check that the seatback thermal

electric device operates correctly.

2. Turn the climate controlled seat switch to the C (Cool) HI position and check that the seatback thermal

electric device operates correctly.

Is the inspection result normal?

YES

>> Seatback thermal electric device is OK.

NO

>> Refer to

SE-18, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010049475

Regarding Wiring Diagram information, refer to

SE-44, "Wiring Diagram"

.

1.

CHECK SEATBACK THERMAL ELECTRIC DEVICE

Perform thermal electric device component inspection for the seatback. Refer to

SE-19, "Component Inspec-

tion (Thermal Electric Device)"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace seatback thermal electric device. Refer to

SE-65, "Exploded View"

.

2.

CHECK SEATBACK THERMAL ELECTRIC DEVICE CIRCUITS

1. Turn ignition switch OFF.

2. Disconnect seatback thermal electric device connector and cli-

mate controlled seat control unit connector B217.

3. Check continuity between seatback thermal electric device con-

nector B218 (A) terminals 1, 2 and climate controlled seat con-

trol unit connector B217 (B) terminals 25, 28.

4. Check continuity between seatback thermal electric device connector B218 (A) terminals 1, 2 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connectors.

3.

CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR CIRCUITS

Seatback thermal electric de-

vice

Climate controlled seat control

unit

Continuity

Connector

Terminal

Connector

Terminal

B218 (A)

1

B217 (B)

28

Yes

2

25

AWJIA0396ZZ

Seatback thermal electric device

Ground

Continuity

Connector

Terminal

B218 (A)

1

No

2

SEATBACK THERMAL ELECTRIC DEVICE

SE-19

< DTC/CIRCUIT DIAGNOSIS >

[WITH CLIMATE CONTROLLED SEATS]

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

1. Disconnect climate controlled seat control unit connector B212.

2. Check continuity between seatback thermal electric device con-

nector B218 (A) terminals 3, 4 and climate controlled seat con-

trol unit connector B212 (B) terminals 15, 16.

3. Check continuity between seatback thermal electric device connector B218 (A) terminals 3, 4 and ground.

Is the inspection result normal?

YES

>> Replace climate controlled seat control unit. Refer to

SE-65, "Exploded View"

.

NO

>> Repair harness or connectors.

Component Inspection (Thermal Electric Device)

INFOID:0000000010049476

1.

CHECK THERMAL ELECTRIC DEVICE

1. Turn ignition switch OFF.

2. Disconnect thermal electric device connector.

3. Measure the resistance of the thermal electric device between terminals 1 and 2.

NOTE:

The resistance value in the table below will change under any of the following conditions:

• air blowing across the thermal electric device

• changing the surrounding temperature of the thermal electric device

• measuring at other than 23

°C (73°F)

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace thermal electric device. Refer to

SE-65, "Exploded View"

.

2.

CHECK THERMAL ELECTRIC DEVICE SENSOR

Measure the resistance of the thermal electric device sensor between terminals 3 and 4.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace thermal electric device. Refer to

SE-65, "Exploded View"

.

Seatback thermal electric de-

vice

Climate controlled seat control

unit

Continuity

Connector

Terminal

Connector

Terminal

B218 (A)

3

B212 (B)

16

Yes

4

15

AWJIA0397ZZ

Seatback thermal electric device

Ground

Continuity

Connector

Terminal

B218 (A)

3

No

4

Thermal electric device terminals

Temperature

Resistance

1

2

23

°C (73°F)

0.9 – 10

Ω

Thermal electric device terminals

Temperature

Resistance

3

4

0 – 10

° C (32 – 50° F)

2785– 1660

Ω

10 – 20

° C (50 – 68° F)

1840 – 1135

Ω

20 – 30

° C (68 – 86° F)

1265 – 800

Ω

30 – 40

° C (86 – 104° F)

895 – 565

Ω

40 – 50

° C (104 – 122° F)

635 – 425

Ω

SE-20

< DTC/CIRCUIT DIAGNOSIS >

[WITH CLIMATE CONTROLLED SEATS]

CLIMATE CONTROLLED SEAT SWITCH

CLIMATE CONTROLLED SEAT SWITCH

Description

INFOID:0000000010049477

Provides inputs to the climate controlled seat control unit for climate controlled seat operation.

Component Function Check

INFOID:0000000010049478

1.

CHECK CLIMATE CONTROLLED SEAT SWITCH FUNCTION

Turn the climate controlled seat switch to the H (Heat) LO, MED, and HI positions and the C (Cool) LO, MED,

and HI positions. Check that the climate controlled seat operates at low, medium and high heat, and low,

medium and high cool.
Is the inspection result normal?

YES

>> Climate controlled seat switch function is OK.

NO

>> Refer to

SE-20, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010049479

Regarding Wiring Diagram information, refer to

SE-44, "Wiring Diagram"

.

1.

CHECK CLIMATE CONTROLLED SEAT SWITCH

Perform climate controlled seat switch component inspection. Refer to

SE-21, "Component Inspection (Cli-

mate Controlled Seat Switch)"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace climate controlled seat switch.

2.

CHECK CLIMATE CONTROLLED SEAT SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect climate controlled seat switch connector and climate

controlled seat control unit connector B216.

3. Check continuity between climate controlled seat switch con-

nector M302 (A) terminal 1 and climate controlled seat control

unit connector B216 (B) terminal 24.

4. Check continuity between climate controlled seat switch connector M302 (A) terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connectors.

3.

CHECK CLIMATE CONTROLLED SEAT SWITCH COOL CIRCUIT

Climate controlled seat switch

Climate controlled seat control

unit

Continuity

Connector

Terminal

Connector

Terminal

M302 (A)

1

B216 (B)

24

Yes

AWJIA0398ZZ

Climate controlled seat switch

Ground

Continuity

Connector

Terminal

M302 (A)

1

No