For 1990-2009 cars

The sunroof switch controls the position of the sunroof. The sunroof panel may be slid open or closed. The rear of the panel may be tilted up into a vent position.

The open relay energizes when the sunroof switch is moved to the OPEN position. The open relay sends voltage through CKT 127 to the sunroof actuator and CKT 129 is grounded. This drives the sunroof up (to vent) or back (for sliding). Operation in the CLOSE position is similar. Before the sunroof opens, the relay inspects the limit switches in order to see what position the sunroof is in.

The sunroof automatically stops in the one of the following positions:

• | Fully open position

• | Vent when opening position

• | Closed position

The fully open, vent, or closed position is sensed by the limit switches. The close relay is energized when the roof is closing from the vent position. When the roof is fully closed, this position is recognized. The limit switches set the correct sequence when the sunroof is in the fully closed position. The sunroof module microprocessor recognizes when the limit switches are in the correct sequence and no voltage is applied to the sunroof actuator.

The driver must release the sunroof switch in order to continue operation to the sliding mode.