Position Encoding System (PES) Module

The Position Encoding System (PES) module tracks the position of the glass through the limit switches and detects the limits of travel to the following positions:
^ Full vent position
^ Full open position

The sunroof module monitors the limit switches. As a limit switch closes, the sunroof limit switch circuit 5-volt reference is shorted to the sunroof limit switch low reference circuit, pulling the reference voltage to 0 volts. The sunroof module detects the position of the sunroof glass based on the multiple input combinations through the limit switch inputs, which brings the sunroof glass to a soft stop under the following conditions:
^ When the glass has reached the full vent position
^ When the glass has reached the full open position
^ When the glass has reached the closed position