Position Encoding System

The Position Encoding System tracks the position of the glass through 2 limit switches:
^ Soft Stop limit
^ Vent limit

The sunroof module monitors the limit switches and based on the inputs determines the position of the sunroof glass. As a limit switch closes, the 5 volt reference will be shorted to the sunroof limit switch low reference circuit, pulling the 5 volt reference to 0 volts.

The sunroof module understands the position of the sunroof glass based on the different input combinations through the soft stop and vent limit switch inputs.