Infiniti FX35, FX50 (S51). Manual - part 1627

SE-28

< DTC/CIRCUIT DIAGNOSIS >

CLIMATE CONTROLLED SEAT SWITCH INDICATOR

CLIMATE CONTROLLED SEAT SWITCH INDICATOR

Description

INFOID:0000000005236628

• Turns ON the indicator that indicates the operating status of climate controlled seat HEAT or COOL mode.

Component Function Check

INFOID:0000000005236629

1.

CHECK FUNCTION

Check that the related indicator lamp illuminates when climate controlled seat switch is set to HEAT or COOL
mode.
Is the inspection result normal?

YES

>> Climate controlled seat switch indicator function is OK.

NO

>> Refer to

SE-28, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005236630

1.

CHECK CLIMATE CONTROLLED SEAT SWITCH INDICATOR

Check climate controlled seat switch indicator.
Which side of indicator does not turn ON?

Only HEAT or COOL mode>>GO TO 3.
Both HEAT and COOL mode>>GO TO 2.

2.

CHECK CLIMATECONTROLLED SEAT SWITCH GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat switch connector.

3.

Check continuity between climate controlled seat switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

3.

CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT OUTPUT SIGNAL

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 4.

Climate controlled seat switch

Ground

Continuity 

Connector

Terminal

Driver side

M177

6

Existed

Passenger side

M178

(+)

(–)

Condition

Voltage (V)

(Approx.)

Climate controlled seat control unit

Connector

Terminal

Driver side

B507

7

Ground

Climate controlled seat 

HEAT mode

Battery voltage

OFF

0

15

COOL mode

Battery voltage

OFF

0

Passenger side

B517

7

Climate controlled seat

HEAT mode

Battery voltage

OFF

0

15

COOL mode

Battery voltage

OFF

0

CLIMATE CONTROLLED SEAT SWITCH INDICATOR

SE-29

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

NO

>> Replace climate controlled seat control unit. Refer to 

SE-85, "Disassembly and Assembly"

.

4.

CHECK CLIMATE CONTROLLED SEAT SWITCH INDICATOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit connector and climate controlled seat switch.

3.

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

4.

Check continuity between climate controlled seat switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

CHECK CLIMATE CONTROLLED SEAT SWITCH INDICATOR

Check climate controlled seat switch.
Refer to 

SE-29, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace climate controlled seat switch. Refer to 

SE-106, "Removal and Installation"

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000005236631

1.

CHECK CLIMATE CONTROLLED SEAT SWITCH INDICATOR

1.

Turn ignition OFF.

2.

Disconnect climate controlled seat switch connector.

3.

Check climate controlled seat switch terminals.

*For a digital tester.
NOTE:

Climate controlled seat switch

Climate controlled seat control unit

Continuity 

Connector

Terminal

Connector

Terminal

Driver side

M177

4

B507

15

Existed

5

7

Passenger side

M178

4

B517

15

5

7

Climate controlled seat switch

Ground

Continuity 

Connector

Terminal

Driver side

M177

4

Not existed

5

Passenger side

M178

4

5

Terminal

Continuity

Climate controlled seat switch

(+)*

(–)*

Driver side

COOL indicator

4

6

Existed

HEAT indicator

5

Passenger side

COOL indicator

4

6

HEAT indicator

5

SE-30

< DTC/CIRCUIT DIAGNOSIS >

CLIMATE CONTROLLED SEAT SWITCH INDICATOR

When checking by an analog tester, the polarity (+) and (–) becomes inverse.

Is the inspection result normal?

YES

>> Climate controlled seat switch indicator is OK.

NO

>> Replace climate controlled seat switch. Refer to 

SE-106, "Removal and Installation"

.

CLIMATE CONTROLLED SEAT BLOWER FILTER

SE-31

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

CLIMATE CONTROLLED SEAT BLOWER FILTER

Diagnosis Procedure

INFOID:0000000005236632

1.

CHECK CLIMATE CONTROLLED SEAT BLOWER FILTER

Remove climate controlled seat blower motor filter and check that there is no clogging by dirt or foreign mat-
ters.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace climate controlled seat blower filter. Refer to 

SE-107, "Removal and Installation"

.