Self-Diagnosis Mode

1. Start the self-diagnosis function and select "Self Diagnosis".
   • Self-diagnosis subdivision screen is displayed, and the self-diagnosis mode starts.
   • The bar graph visible on the center of the self-diagnosis subdivision screen indicates progress of the trouble diagnosis.
2. Diagnosis results are displayed after the self-diagnosis is completed. The unit names and the connection lines are color-coded according to the diagnostic results.

   Diagnosis results	Unit	Connection line
   Normal	Green	Green
   Connection malfunction	Gray	Yellow
   Unit malfunction Note	Red	Green

   NOTE: AV control unit (Head Unit) is displayed in red.

   • Replace AV control unit if "Self-Diagnosis did not run because of a control unit malfunction" is indicated. The symptom is AV control unit internal error. Refer to Removal and Installation .
   • If multiple errors occur at the same time for a single unit, the screen switch colors are determined according to the following order of priority: red > gray.
3. MCAN, Head Unit and VCAN are displayed:
   • Press the MCAN button and the system components connected via AV communication are displayed.
   • Press the Head Unit button and the components connected to the AV control unit are displayed.
   • Press the VCAN button and the system components connected via CAN communication are displayed. Refer to Trouble Diagnosis Flow Chart for CAN communication diagnosis.

Detection Range of Self-Diagnosis Mode 

• The self-diagnosis mode allows the technician to diagnose the connection in the communication line between AV control unit and each unit and the internal operation of the AV control unit.
• Because the start condition of diagnosis function is a switch operation, the on board diagnosis function cannot be started if any malfunction is detected in the communication circuit between AV control unit and integral switch.