Unit Check (Quick Check): Display

This diagnostic does additional checks on the communication bus between the control unit and the display. This test also checks the internal electronic functions.

• When the connection is NG, first check for loose terminals at the navigation unit and the navigation display unit connections. Next check for an open or short in the communication line between the navigation unit and the navigation display unit. If you find the line has an open or a short, replace the affected shielded harness.
• If the ROM or RAM is NG, replace the navigation display unit (see NAVIGATION DISPLAY UNIT REMOVAL/INSTALLATION  ).
• The version represents the software version in the display.
  Fig 1: Identifying ROM Or RAM Display

  Courtesy of AMERICAN HONDA MOTOR CO., INC.