Other Navigation Inputs

The audio-navigation unit uses the vehicle speed signal from the ECM/PCM, a yaw rate sensor (in the audio-navigation unit), and the reverse signal to display the vehicle's direction and speed of travel on the map. The illumination signal (headlights ON) is used by the audio-navigation unit to automatically switch the display between night and day brightness modes when the display is set to Auto. When the instrument panel brightness control is set to full brightness (hold both the + and - keys at the same time), the navigation system stays in the day mode, even with the headlights ON.