Self-Diagnosis Mode

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.
  
  Fig 1: Screen Display - Self-Diagnosis
  Courtesy of NISSAN MOTOR CO., U.S.A.

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.

Fig 2: Screen Display - Color Coded

Courtesy of NISSAN MOTOR CO., U.S.A.

DIAGNOSIS RESULTS REFERENCE TABLE

Diagnosis results	Unit	Connection line
Normal	Green	Green
Connection malfunction	Gray	Yellow
Unit malfunction ^Note	Red	Green
NOTE: Only the control unit (AV control 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 an AV control unit internal error. Refer to EXPLODED VIEW .

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.
The comments of the self-diagnosis results can be viewed with a component in the diagnosis result screen.

Fig 3: Screen Display - System Diagnosis Menu
Courtesy of NISSAN MOTOR CO., U.S.A.

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 AV control unit.
Because the start condition of diagnosis function is switch operated, the on board diagnosis function cannot be started up if any malfunction is detected in the communication circuit between AV control unit and multifunction switch.