Seat Cushion Thermal Electric Device

SEAT CUSHION THERMAL ELECTRIC DEVICE





Description
Seat cushion thermal electric device is installed in the seat cushion backside and heats or cools the airflow from the climate controlled seat blower motor in accordance with the control from the climate controlled seat control unit.




Component Function Check
1.CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE FUNCTION
Check whether or not the temperature of the seat cushion thermal electric device changes in accordance with the HEAT or COOL switch operation of the climate controlled seat control switch.
Is the inspection result normal?
YES - Seatback thermal device function is OK.
NO - Seatback Thermal Electric Device.




Diagnosis Procedure
1.CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SIGNAL
1. Turn ignition switch ON.
2. Check voltage between seat cushion thermal electric device harness connector and ground.






NOTE:
Wait 1 minute or more after the activation start, and then start the measurement.
Is the inspection result normal?
YES - Replace seat cushion thermal electric device.
NO - GO TO 2.
2.CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit connector and seat cushion thermal electric device connector.
3. Check continuity between climate controlled seat control unit harness connector and seat cushion thermal electric device harness connector.





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





Is the inspection result normal?
YES - Replace climate controlled seat control unit. Overhaul.
NO - Repair or replace harness.