Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect rear heated seat switch connector.
3. Turn ignition switch ON.
4. Check voltage between rear heated seat switch harness connector and ground.

   (+)			(-)	Voltage (V) (Approx.)
   Rear heated seat switch
   Connector		Terminal
   LH	B679	2	Ground	5
   		8
   RH	B649	2
   		8

Is the inspection result normal?

YES

GO TO 3.

NO

GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect rear heated seat control unit connector.
3. Check continuity between rear heated seat switch harness connector and rear heated seat control unit harness connector.

   Rear heated seat switch			Rear heated seat control unit		Continuity
   Connector		Terminal	Connector	Terminal
   LH	B679	2	B647	11	Existed
   		8		13
   RH	B649	2		10
   		8		4

4. Check continuity between rear heated seat switch harness connector and ground.

   Rear heated seat switch			Ground	Continuity
   Connector		Terminal
   LH	B679	2		Not existed
   		8
   RH	B649	2
   		8

Is the inspection result normal?

YES

Replace rear heated seat control unit.

NO

Repair or replace harness.

1. Turn ignition switch OFF.
2. Check continuity between rear heated seat switch harness connector and ground.

Is the inspection result normal?

YES

GO TO 4.

NO

Repair or replace harness.

Check rear heated seat switch.

Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 5.

NO

Replace rear heated seat switch.

Refer to Intermittent Incident .

INSPECTION END