Seat Fan Switch: Testing and Inspection

CLIMATE CONTROLLED SEAT SWITCH





Description
Installed in the center console and transmits signals to climate controlled seat control unit in accordance with the HEAT or COOL switch operation and the temperature switch operation.




Component Function Check
1.CHECK 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 - SEE 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. Front Seat.
NO - Repair or replace harness.
5.CHECK CLIMATE CONTROLLED SEAT SWITCH
Check climate controlled seat switch. SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 6.
NO - Replace climate controlled seat switch. Removal And Installation.
6.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END




Component Inspection
1.CHECK CLIMATE CONTROLLED SEAT SWITCH
1. Turn ignition OFF.
2. Disconnect climate controlled seat switch connector.
3. Check climate controlled seat switch terminals.





Is the inspection result normal?
YES - Climate controlled seat switch is OK.
NO - Replace climate controlled seat switch. Removal And Installation.