Operation Procedure

Start the engine.
Turn the audio system off.
While pressing the "MUTE/II " button, turn the volume control dial clockwise or counterclockwise for 30 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 "PREV" button.
  
  Fig 1: Locating MUTE/II Button And Turning Volume Control Dial
  Courtesy of NISSAN MOTOR CO., U.S.A.
The initial trouble diagnosis screen will be shown, and items "Self-Diagnosis (DCU)", "Self-Diagnosis (NAVI)","Confirmation/Adjustment" and "CAN DIAG SUPPORT MONITOR" will become selective.

Fig 2: Initial Trouble Diagnosis Screen Display
Courtesy of NISSAN MOTOR CO., U.S.A.
When "Confirmation/Adjustment" is selected on the initial trouble diagnosis screen, the operation will enter the CONFIRMATION/ADJUSTMENT mode. In this mode, check and adjustment of each item will become possible.
The initial trouble diagnosis screen will be shown, and items "Display Diagnosis", "Vehicle Signals", "Auto Climate Control" and "Navigation" will become selective.
Select each switch on "CONFIRMATION/ADJUSTMENT" screen to display the relevant diagnosis screen.

Fig 3: Confirmation/Adjustment - Initial Trouble Diagnosis Screen Display
Courtesy of NISSAN MOTOR CO., U.S.A.