Starting Procedure

Start the engine.
Turn the audio system OFF.
While pressing the "SETTING" button, turn the volume control dial clockwise or counterclockwise for 40 clicks or more. (When the self-diagnosis mode is started, a short beep will be heard.)
- Shifting from current screen to previous screen is performed by pressing "BACK" button.
  
  Fig 1: Turning Volume Control Dial Clockwise While Pressing "SETTING" Button
  Courtesy of NISSAN NORTH AMERICA, INC.
The trouble diagnosis initial screen is displayed, and then the items of "Self Diagnosis" and "Confirmation/Adjustment" can be selected.

Fig 2: System Diagnostic Menu - Confirmation/Adjustment Screen Display
Courtesy of NISSAN NORTH AMERICA, INC.