Diagnosis Procedure

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

   AV control unit		Antenna amp.		Continuity
   Connector	Terminals	Connector	Terminals
   M319	161	M313	1	Existed

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

   AV control unit		Ground		Continuity
   Connector	Terminals
   M319	161			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.

   (+)		(-)		Voltage (Approx.)
   AV control unit
   Connector	Terminals
   M319	161	Ground		12.0 V

Is the inspection result normal?

YES 

Replace antenna amp. Refer to REMOVAL AND INSTALLATION .

NO 

Replace AV control unit. Refer to REMOVAL AND INSTALLATION .