Diagnosis Procedure

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

   (+)			(-)	Condition	Voltage (V) (Approx.)
   Seat cushion thermal electric unit
   Connector		Terminal
   Driver side	B533	69	Ground	Climate controlled seat operated	1 - 5
   Passenger side	B563

Is the inspection result normal?

YES

GO TO 3.

NO

GO TO 2.

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.

   Climate controlled seat control unit			Seat cushion thermal electric unit		Continuity
   Connector		Terminal	Connector	Terminal
   Driver side	B660	69	B533	69	Existed
   Passenger side	B662		B563

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

   Climate controlled seat control unit			Ground	Continuity
   Connector		Terminal
   Driver side	B660	69		Not existed
   Passenger side	B662

Is the inspection result normal?

YES

Replace climate controlled seat control unit.

NO

Repair or replace harness.

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.

   Climate controlled seat control unit			Seat cushion thermal electric unit		Continuity
   Connector		Terminal	Connector	Terminal
   Driver side	B660	70	B533	70	Existed
   Passenger side	B662		B563

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

   Climate controlled seat control unit			Ground	Continuity
   Connector		Terminal
   Driver side	B660	70		Not existed
   Passenger side	B662

Is the inspection result normal?

YES

GO TO 4.

NO

Repair or replace harness.

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.

Refer to Intermittent Incident .

INSPECTION END