Seatback Thermal Electric Unit

SEATBACK THERMAL ELECTRIC UNIT

Component Function Check


1. CHECK SEATBACK THERMAL ELECTRIC UNIT FUNCTION

Check whether or not the temperature of the seatback 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- .


Diagnosis Procedure


1. CHECK SEATBACK THERMAL ELECTRIC UNIT INPUT SIGNAL

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

2. CHECK SEATBACK THERMAL ELECTRIC UNIT CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect climate controlled seat control unit connector and seatback thermal electric unit connector.
3.Check continuity between climate controlled seat control unit harness connector and seatback 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. Front Seat.
NO- Repair or replace harness.