How the Circuit Works: Notes

This audio-navigation unit 2-DIN assembly consists of the navigation unit, audio unit, and display panel. Additional components of the navigation system include the GPS Antenna, Microphone, Voice Control Switch and the front speakers. Signals from the system's yaw rate sensor (inside the navigation unit) detect the vehicle turning, while the ECM/PCM vehicle speed pulse (VSP) and reverse signal enable the system to keep track of the vehicle's speed and direction of travel. The navigation unit generates the screen graphics, and then displays them on the display panel.