Seat Cushion Thermal Electric Unit

SEAT CUSHION THERMAL ELECTRIC UNIT

Component Function Check


1. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT FUNCTION

Check whether or not the temperature of the seat cushion thermal electric unit 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 electric unit function is OK.
NO- Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SIGNAL

1.Turn ignition switch ON.
2.Check voltage between seat cushion thermal electric unit 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 unit.
NO- GO TO 2.

2. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT CIRCUIT

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