CTS V6-3.2L VIN N (2003)
Compass: Description and Operation
COMPASS
The mirror uses two magnetic field sensors for compass direction. One sensor is for north and south, the other is for east and west. The mirror supplies a
signal and low reference to each sensor. As the vehicle travels with or against the earth's magnetic pull, there will be a change in voltage on one or both
sensors. As a result of the change in voltage, the mirror changes the heading on the compass display.
