Seatback Thermal Electric Device

SEATBACK THERMAL ELECTRIC DEVICE

Description

Installed in the seatback 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 FUNCTION

Checks whether or not the temperature of the seatback 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- Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK SEATBACK THERMAL ELECTRIC DEVICE SIGNAL

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

2. CHECK SEATBACK THERMAL ELECTRIC DEVICE CIRCUIT

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