System Diagnostic Mode: Display: Notes

This diagnostic does additional checks on the communication bus between the control unit and the display. In addition, the internal electronics functionality are confirmed.

When the connection is NG, first check for loose terminals at the navigation unit and the display unit connections. Next check for an open or short in the communication line between the navigation unit and the display unit. If you find the line has an open or short, replace the affected shielded harness.
If the ROM or RAM is NG, replace the display unit.
The version represents the software version in the display.

Fig 1: Navigation Unit Display - Software Version

Courtesy of AMERICAN HONDA MOTOR CO., INC.