Monitor Check: Notes

Overview of the navigation display

• The navigation display communicates with the navigation unit over its own GA-Net bus. Information is sent to the navigation unit whenever the user activates the touch screen, or buttons. Information sent by the navigation unit to the navigation display includes commands to control the LCD back light.
• The navigation display is protected by the security system by daisy-chaining the security signal through it, and then passing the signal to the audio unit.
• The illumination input from the gauge brightness control provides back lighting for the buttons surrounding the screen.

These screens allow troubleshooting of the navigation display. Select the item you want to troubleshoot, and follow the diagnostic instructions.