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Operation Procedure

WARNING: This page is about a different car, the 2011 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition switch to the ON position.
Turn the audio unit off.
While pressing the "MENU", "1", "5", "PWR" button, the self-diagnosis mode is started. When the self-diagnosis mode is started, a short beep will be head.

Fig 1: Identifying Audio Unit
Courtesy of NISSAN MOTOR CO., U.S.A.

Software Version Check

Press the "PWR" switch to enter version diagnostics. "Audio software version is displayed.
Press the "PWR" switch again to display the CD changer version is displayed. When not connect it, "FF"

Fig 2: Screen Display - Version
Courtesy of NISSAN MOTOR CO., U.S.A.