Seatback Heater

SEATBACK HEATER





Component Function Check
1.CHECK SEATBACK HEATER 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 Component Inspection.




Diagnosis Procedure
1.CHECK SEATBACK HEATER SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect seat cushion heater connector and seatback heater connector.
3. Check continuity between seat cushion heater harness connector and seatback heater harness connector.





4. Check continuity seat cushion heater harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace harness.
2.CHECK SEATBACK HEATER
Check seatback heater. SEE Component Inspection.
Is the inspection result normal?
YES - Replace seat cushion heater.
NO - Replace seatback heater.




Component Inspection
1.CHECK SEATBACK HEATER
1. Turn ignition switch OFF.
2. Disconnect seatback heater connector.
3. Check resistance between seatback heater terminals.






NOTE:
Resistance value changes according to temperature.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace seatback heater.