Diagnosis Procedure

1. Turn ignition switch OFF.
2. Visually check radio antenna and antenna feeder.

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair or replace malfunctioning parts.

1. Turn ignition switch OFF.
2. Disconnect AV control unit harness connector.
3. Check the continuity AV control unit harness connector and ground.

   Terminals			Continuity
   (+)		(-)
   AV control unit
   Connector	Terminal
   M394	150	Ground	Not existed

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Repair or replace malfunctioning parts.

1. Turn ignition switch ON.
2. Check the voltage between AV control unit and ground.

   Terminals		Voltage (Approx.)
   (+)	(-)
   AV control unit
   Terminal
   150	Ground	5.0 V

Is the inspection result normal?

YES 

Replace window antenna. Refer to FEEDER LAYOUT .

NO 

Replace AV control unit. Refer to REMOVAL AND INSTALLATION .