Diagnosis Procedure

SEATBACK THERMAL ELECTRIC DEVICE


Description

Provides cooling and heat for the seatback.




SEATBACK THERMAL ELECTRIC DEVICE


Diagnosis Procedure

Regarding Wiring Diagram information, Climate Controlled Seat Control Unit.
1.CHECK SEATBACK THERMAL ELECTRIC DEVICE
Perform thermal electric device component inspection for the seatback. Component Inspection.
Is the inspection result normal?
YES - GO TO 2.
NO - Replace seatback thermal electric device.
2.CHECK SEATBACK THERMAL ELECTRIC DEVICE CIRCUITS





1. Turn ignition switch OFF.
2. Disconnect seatback thermal electric device connector and climate controlled seat control unit connector B217.
3. Check continuity between seatback thermal electric device connector B218 (A) terminals 1, 2 and climate controlled seat control unit connector B217 (B) terminals 25, 28.






4. Check continuity between seatback thermal electric device connector B218 (A) terminals 1, 2 and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair harness or connectors.
3.CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR CIRCUITS





1. Disconnect climate controlled seat control unit connector B212.
2. Check continuity between seatback thermal electric device connector B218 (A) terminals 3, 4 and climate controlled seat control unit connector B212 (B) terminals 15, 16.





3. Check continuity between seatback thermal electric device connector B218 (A) terminals 3, 4 and ground.





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