Starting The Self-Diagnosis Mode (BOSE System With NAVI)

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition switch from OFF to ACC.
Within 10 seconds press and hold the switches "PAUSE/MUTE" and SCAN" simultaneously for 3 seconds.
Then the self-diagnosis operates. A single beep indicates self diagnosis mode is active.
Press each switch and listen for beep.

NOTE: CD player LOAD and EJECT buttons are not included in this test and will not beep when pressed.

Fig 1: Holding Switches PAUSE/MUTE And SCAN

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