Seat Cushion Thermal Electric Unit Sensor

SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR

Component Function Check


1. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR 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- INSPECTION END
NO- Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR SIGNAL

1.Turn ignition switch ON.
2.Check voltage between seat cushion thermal electric unit harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR 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.
NO- Repair or replace harness.

3. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR GROUND 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- GO TO 4.
NO- Repair or replace harness.

4. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR

Check seat cushion thermal electric unit sensor.
Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 5.
NO- Replace seat cushion thermal electric unit.

5. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END


Component Inspection


1. CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR

1.Turn ignition switch OFF.
2.Disconnect seat cushion thermal electric unit connector.
3.Check resistance between seat cushion thermal electric unit terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace seat cushion thermal electric unit. Refer to "CLIMATE CONTROLLED SEAT UNIT : Disassembly and Assembly" Front Seat.