Self-Diagnosis Mode (NAVI)

WARNING: This page is about a different car, the 2008 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

Start the engine.
Turn the audio system off.
While pressing the "MEMORY 4" 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 "BACK" button.
Fig 1: Turning Volume Control Dial Clockwise Or Counterclockwise
Courtesy of NISSAN MOTOR CO., U.S.A.
The initial self-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: Self-Diagnosis Screen - CAN DIAG SUPPORT MONITOR
Courtesy of NISSAN MOTOR CO., U.S.A.
Perform self-diagnosis by selecting the "Self-diagnosis (NAVI)".
- Self-diagnosis subdivision screen will be shown and the operation enters the self-diagnosis mode.
- A bar graph will be shown on the screen to indicate progress of the diagnosis.
Fig 3: Self-Diagnosis Screen - NAVI
Courtesy of NISSAN MOTOR CO., U.S.A.
On the "SELF DIAGNOSIS" screen, each unit name will be colored according to the diagnosis result, as follows.
Green : Not malfunctioning.

Yellow : Cannot be judged by self-diagnosis results.

Red : Unit is malfunctioning.

Gray : Diagnosis has not been done.

Fig 4: Identifying Navigation System Display -- SELF DIAGNOSIS
Courtesy of NISSAN MOTOR CO., U.S.A.
- If several malfunctions are present in a unit, color of its switch on the screen will be either red, yellow, or gray, determined by the malfunction of the highest priority.
Select a switch on the "SELF DIAGNOSIS" screen and comments for the diagnosis results will be shown.

When the switch is green, the following comment will be shown. "Self diagnosis did not detect any error. Please refer to the Confirmation / Adjustment function or service information for more detailed diagnosis information."
When the switch is yellow, the following comment will be shown. "Connection to the following unit is abnormal. See the service information for further details".
When the switch is red, the following comment will be shown. "Center Control Unit is abnormal".
When the switch is gray, the following comment will be shown. "Detected connection error(s) are the following. Please refer to the confirmation/adjustment function or service information for more detailed diagnosis information."

Fig 5: Screen Display - Self-Diagnosis

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