General Description

The sunroof system consists of the sunroof assembly and the following 3 electrical components:
^ The sunroof actuator
^ The sunroof switch
^ The sunroof control module

The sunroof assembly has the following 3 positions:
^ Closed (flush with the vehicle roof)
^ Open (retracted into the roof cavity)
^ Vented (rear of the glass raised to the travel limit)

The sunroof actuator consists of the following components:
^ A reversible DC motor
^ A gear train
^ A limit switch

The sunroof switch is a rocker-type switch with the following 3 positions:
^ Normal center OFF position
^ FORWARD/OPEN VENT position
^ REVERSE/CLOSE VENT position

The sunroof control module controls the sunroof motor based on the inputs from the sunroof switch and the limit switch. The control module has the following special features:
^ Express Open and Express Close Vent
^ Stall Sense
^ Operation Time Out

The express feature allows you to momentarily push the sunroof switch in the FORWARD/OPEN VENT position in order to fully open or close the glass from the vent position.

The stall sense stops the sunroof under the following conditions:
^ The sunroof assembly is obstructed.
^ The sunroof assembly has reached the fully open position during express open.

The operation time out protects the sunroof against failure of the stall sense. The control module stops the operation of the sunroof assembly after 20 seconds.