Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect antenna base connector and AV control unit connector.
3. Check continuity between AV control unit harness connector and antenna base harness connector.

   AV control unit		Antenna base		Continuity
   Connector	Terminals	Connector	Terminals
   M394	152	M386	1	Existed

4. Check continuity between AV control unit harness connector and ground.

   AV control unit		Ground		Continuity
   Connector	Terminals
   M394	152			Not existed

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair harness or connector.

1. Connect AV control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector and ground.

   AV control unit		(-)		Voltage (Approx.)
   Connector	Terminals
   M394	152	Ground		12.0 V

Is the inspection result normal?

YES 

Replace antenna base Refer to REMOVAL AND INSTALLATION .

NO 

Replace AV control unit. Refer to REMOVAL AND INSTALLATION .