Factory Diagnostic Screen In Line Diag

NOTE: If the vehicle left the factory in the factory diagnostic mode, you will see this screen every time you turn on the ignition. Sometimes this screen also appears after you replace the audio-navigation unit with a new or remanufactured unit.

When an audio-navigation unit is powered up for the first time at the factory, the factory diagnosis screen (In Line Diag) appears. Normally the factory does the steps necessary to verify proper operation and terminate the factory diagnosis.

Until the proper confirmation sequence is done, the screen appears every time you turn on the ignition.

Fig 1: Screen Display - Factory Diagnosis (In Line Diag)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Follow the steps to prevent the screen from showing up in the future:

Press and hold the MAP/GUIDE, the DEST, and the CANCEL buttons for about 3 seconds. The Select Diagnosis Items screen appears.
Press and hold the MAP/GUIDE button until the In Line Diag CSF Setting screen appears.

Fig 2: Screen Display - In Line Diag CSF Setting
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Set the In Diag Setting to Complete, and make sure the CSF setting is ON, then select Return twice to exit the diagnostic mode. The In Line Diag should not appear again.