1.Satellite radio antenna check Visually check satellite radio antenna and antenna feeder. Is the inspection result normal? YES>>GO TO 2. NO>>Repair malfunctioning parts.
2.CHECK AV CONTROL UNIT VOLTAGE

1. Disconnect satellite radio antenna connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit terminal and ground.

   (+) | (−) | Voltage (Approx.)
   AV control unit
   Terminal
   139 | Ground | 5.0 V

Is the inspection result normal?
YES>>INSPECTION END
NO>>Replace AV control unit. Refer to Removal and Installation.