Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect front seat cushion heater connector.
3. Turn ignition switch ON.
4. Check voltage between front seat cushion heater harness connector and ground.

   (+)			(-)	Condition		Voltage (V) (Approx.)
   Front seat cushion heater
   Connector		Terminal
   Driver side	B534	72	Ground	Front heated seat switch (driver side)	OFF	0
   					1 (Min. temperature)	10.66 *
   					2	11.18 *
   					3	11.76 *
   					4	12.12 *
   					5	12.47 *
   					6 (Max. temperature)	12.83 *
   Passenger side	B574	72		Front heated seat switch (passenger side)	OFF	0
   					1 (Min. temperature)	10.66 *
   					2	11.18 *
   					3	11.76 *
   					4	12.12 *
   					5	12.47 *
   					6 (Max. temperature)	12.83 *

   ^* : When thermistor temperature is 20 deg. C (68 deg. F).

Is the inspection result normal?

YES

INSPECTION END

NO

GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect front heated seat switch connector.
3. Check continuity between front heated seat switch harness connector and front seat cushion heater harness connector.

   Front heated seat switch			Front seat cushion heater		Continuity
   Connector		Terminal	Connector	Terminal
   Driver side	M198	2	B534	72	Existed
   Passenger side	M199		B574

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

   Front heated seat switch			Ground	Continuity
   Connector		Terminal
   Driver side	M198	2		Not existed
   Passenger side	M199

Is the inspection result normal?

YES

GO TO 3.

NO

Repair or replace harness.

Check front heated seat switch.

Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 4.

NO

Replace heated seat switch.

Check intermittent incident.

Refer to Intermittent Incident .

INSPECTION END