Monitor Check: Notes

Overview of the navigation display unit

• The navigation display unit communicates with the audio-navigation unit over its own GA-Net bus. Information sent by the audio-navigation unit to the navigation display unit includes commands to control the LCD back light.
• The security system protects the navigation display unit by daisy-chaining the security signal through the components.

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