Seat Temperature Switch: Testing and Inspection

HEATED SEAT SWITCH





Component Function Check
1.CHECK HEATED SEAT SWITCH FUNCTION
Check that heated seat warms to preset temperature when operating heated seat switch to the optimal position.
Is the inspection result normal?
YES - INSPECTION END
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK SEAT CUSHION HEATER INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect seat cushion heater connector.
3. Turn ignition switch ON.
4. Check voltage between seat cushion heater harness connector and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 2.
2.CHECK HEATED SEAT SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect heated seat switch connector.
3. Check continuity between heated seat switch harness connector and seat cushion heater harness connector.





4. Check continuity between heated seat switch harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness.
3.CHECK HEATED SEAT SWITCH
Check heated seat switch. SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 4.
NO - Replace heated seat switch.
4.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Intermittent Incident.
- INSPECTION END




Component Inspection
1.CHECK FRONT HEATED SEAT SWITCH
1. Turn ignition OFF.
2. Disconnect heated seat switch connector.
3. Check resistance between heated seat switch terminals under the following conditions.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace heated seat switch.