Seat Fan Switch: Testing and Inspection

CLIMATE CONTROLLED SEAT SWITCH

Component Function Check


1. CHECK CLIMATE CONTROLLED SEAT SWITCH FUNCTION

Check that climate controlled seat activates when operating climate controlled seat control switch.
Is the inspection result normal?
YES- Climate controlled seat switch is OK.
NO- Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT INPUT 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- Climate controlled seat switch circuit is OK.
NO-1 HEAT or COOL mode is NG-GO TO 2.
NO-2 HEAT and COOL modes are NG-GO TO 3.

2. CHECK CLIMATE CONTROLLED SEAT SWITCH CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect climate controlled seat switch connector and climate controlled seat control unit connector.
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.

3. CHECK CLIMATE CONTROLLED SEAT SWITCH POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect climate controlled seat switch connector.
3.Turn ignition switch ON.
4.Check voltage between climate controlled seat switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 4.

4. CHECK CLIMATE CONTROLLED SEAT SWITCH POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect climate controlled seat control unit connector.
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- Replace climate controlled seat control unit. Refer to "CLIMATE CONTROLLED SEAT UNIT : Disassembly and Assembly" Front Seat.
NO- Repair or replace harness.

5. CHECK CLIMATE CONTROLLED SEAT SWITCH

Check climate controlled seat switch.
Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 6.
NO- Replace climate controlled seat switch. Refer to "Removal and Installation" Service and Repair.

6. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END


Component Inspection


1. CHECK CLIMATE CONTROLLED SEAT SWITCH

1.Turn ignition switch OFF.
2.Disconnect climate controlled seat switch connector.
3.Check the continuity between climate controlled seat switch terminals under the following terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace climate controlled seat switch. Refer to "Removal and Installation" Service and Repair.