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 the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. You may also see this screen if you recently replaced the audio-navigation unit.

When the audio-navigation unit is powered up for the first time at the factory or sometimes when a remanufactured audio-navigation unit is installed, the factory diagnostic 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 the vehicle is started.

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

Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

Press and hold the MENU, the MAP/GUIDE, and the CANCEL buttons at the same time until the Select Diagnosis Items screen comes up. Then release the buttons.
Press and hold the MAP/GUIDE button until the In Line Diag Setting screen appears.
Set the In Line Diag Setting to Complete, then select Return twice to exit the diagnostic mode.

Fig 2: Screen Display - In Line Diag Setting
Courtesy of AMERICAN HONDA MOTOR CO., INC.