Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. GPS ANTENNA INSPECTION
   
   

   Visually inspect the GPS antenna and antenna feeder. Refer to REMOVAL AND INSTALLATION .

   Is inspection result normal?

   YES 

   GO TO STEP 2  .

   NO 

   Repair or replace harness or connectors.

2. CHECK AV CONTROL UNIT VOLTAGE
   
   
   1. Disconnect AV control unit connector M25.
   2. Turn ignition switch ON.
   3. Check voltage between AV control unit connector M25 and ground.

      AV control unit		Ground	Voltage
      Connector	Terminal
      M25	188	-	5.0 V

   Is inspection result normal?

   YES 

   Inspection End.

   NO 

   Replace AV control unit. Refer to REMOVAL AND INSTALLATION .