System Description: Overview
The audio unit acts as the processor for all audio functions. You can select the audio functions from the front panel, the audio remote (on steering wheel), or by using the navigation voice control system. The audio display provides the current front audio status. For vehicles with the navigation option, additional audio information is available by touching the audio button on the Navigation Audio Screen (See the owner's manual and the navigation user's guide for more details.)
The audio disc changer, XM receiver, and navigation unit send their signals to the audio unit. In addition, they communicate with the audio unit via the GA-Net bus. Any open connection in the G-Net bus circuit will cause audio and navigation functions to become inoperative.
For vehicles with the navigation option, pressing the open/close switch on the navigation display panel accesses the CD changer unit.
A security signal is daisy-chained between the audio and navigation components for integration into the vehicle's security system.