Diagnosis Procedure

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

   (+)			(-)	Condition		Voltage (V) (Approx.)
   Seatback thermal electric unit
   Connector		Terminal
   Driver side	B532	59	Ground	Climate controlled seat switch	HEAT or COOL	0 - 12 *
   					Other than the above	0
   		60			HEAT or COOL	0 - 12 *
   					Other than the above	0
   Passenger side	B562	59		Climate controlled seat switch	HEAT or COOL	0 - 12 *
   					Other than the above	0
   		60			HEAT or COOL	0 - 12 *
   					Other than the above	0

   ^* : It value changes between 12 V and 0 V

   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.

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.

   Climate controlled seat control unit			Seatback thermal electric unit		Continuity
   Connector		Terminal	Connector	Terminal
   Driver side	B661	59	B532	59	Existed
   		60		60
   Passenger side	B663	59	B562	59
   		60		60

4. Check continuity between climate controlled seat control unit harness connector and ground.

   Climate controlled seat control unit			Ground	Continuity
   Connector		Terminal
   Driver side	B661	59		Not existed
   		60
   Passenger side	B663	59
   		60

Is the inspection result normal?

YES

Replace climate controlled seat control unit.

NO

Repair or replace harness.