Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect ambient sensor connector.
3. Turn ignition switch ON.
4. Check voltage between ambient sensor harness connector and ground.

   +		-		Voltage (Approx.)
   Ambient sensor
   Connector	Terminal
   E206	1	Ground		5 V

Is the inspection result normal?

YES

GO TO 2.

NO

GO TO 4.

1. Turn ignition switch OFF.
2. Check continuity between ambient sensor harness connector and ground.

   Ambient sensor		--		Continuity
   Connector	Terminal
   E206	2	Ground		Yes

Is the inspection result normal?

YES

GO TO 3.

NO

Repair harness or connector.

Check ambient sensor. Refer to Component Inspection .

Is the inspection result normal?

YES

Replace A/C auto amp. Refer to Removal and Installation .

NO

Replace ambient sensor. Refer to Removal and Installation .

1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between ambient sensor harness connector and A/C auto amp. harness connector.

   Ambient sensor		A/C auto amp.		Continuity
   Connector	Terminal	Connector	Terminal
   E206	1	M50	7	Yes

Is the inspection result normal?

YES

GO TO 5.

NO

Repair harness or connector.

Check continuity between ambient sensor harness connector and ground.

Is the inspection result normal?

YES

GO TO 6.

NO

Repair harness or connector.

1. Turn ignition switch ON.
2. Check voltage between ambient sensor harness connector and ground.

   +		-		Voltage (Approx.)
   Ambient sensor
   Connector	Terminal
   E206	1	Ground		0 V

Is the inspection result normal?

YES

Replace A/C auto amp. Refer to Removal and Installation .

NO

Repair harness or connector.