Sunroof Description and Operation Before VIN 209984

The power sunroof system consists of the following components:

The sunroof control module has two power circuits; the Sunroof 20 A fuse and the RAP supply voltage. The Sunroof 20 A fuse is hot at all times suppling battery positive voltage for the operation of the sunroof motor control circuits. The RAP supply voltage is for the sunroof control module logic circuitry and is controlled from, or by the BCM, depending on the wiring configuration. The power sunroof will operate with the ignition switch turned to Accessory or RUN suppling RAP supply voltage. Once the ignition switch is turned to OFF the sunroof will continue to operate until any door is open or when the Retained Accessory Power (RAP) has timed out. For a description and operation of the RAP operation, refer to Retained Accessory Power (RAP) Description and Operation in Retained Accessory Power.

Use the rocker type sunroof switch to command the sunroof to :

Pressing the sunroof switch rearward, the sunroof glass will slide from:

Pressing the sunroof switch forward, the sunroof glass will slide from:

The express open will operate from the closed or partially open position. To express open the power sunroof, turn the ignition to RUN. Press the sunroof switch rearward once. This will apply the sunroof switch low reference to the sunroof switch open signal circuit, 5 volt reference input, pulling it to 0 volts. The 0 volts input to the sunroof control module indicates an express open request. From the closed position, the sunroof control module will control the motor to lower the rear of the sunroof glass slightly and then slide it rearward between the roof and the headliner, along with the sunshade. The wind deflector will raise upward. To stop the sunroof glass in a desired position other than to the express open position, press the sunroof switch, in either direction, to stop the movement.

To close the power sunroof, turn the ignition to RUN, and from the:

To open the power sunroof to the vent position from the closed position, turn the ignition to RUN. Press and hold the sunroof switch forward. This will apply the sunroof switch low reference to the sunroof switch close signal circuit, 5 volt reference, pulling it to 0 volts. The sunroof switch close signal input to the sunroof control module needs to have constant 0 volts applied, switch pressed, to allow the sunroof control module to control the sunroof motor to tilt the rear of the glass upward to the vent position.

The sunroof has a bi-directional motor. When the sunroof motor is not operating both control circuits are grounded. When the sunroof motor drives the sunroof glass in the direction from the vent position to the open position, the following occurs:

When the motor drives the sunroof glass in the direction from the open position to the vent position, the following occurs:

The sunroof motor understands when it has driven the sunroof glass to the vent, close and full open positions based on the internal limit switches within the sunroof module. The sunroof control module interprets the limit switch combinations and controls the sunroof motor to soft stop the sunroof glass at the positions. The sunroof control module is equipped with a timer circuit which stops the operation of the sunroof motor after 8 seconds.

Sunroof Description and Operation After VIN 209983

The power sunroof system consists of the following components:

The sunroof motor/module assembly has 2 power circuits battery positive voltage and the retained accessory power (RAP) supply voltage circuit. The Sunroof 20 A fuse is hot at all times suppling the battery positive voltage circuit for the operation of the sunroof motor. The RAP supply voltage circuit is for the sunroof module logic circuitry and is controlled from, or by the body control module (BCM), depending on the wiring configuration. The power sunroof will operate with the ignition switch turned to Accessory or RUN suppling RAP supply voltage. Once the ignition switch is turned to OFF the sunroof will continue to operate until any door is open or when the RAP has timed out. For a description and operation of the RAP operation, refer to Retained Accessory Power (RAP) Description and Operation in Retained Accessory Power.

Use the rocker type sunroof switch to command the sunroof to :

Pressing the sunroof switch rearward, the sunroof glass will slide from:

Pressing the sunroof switch forward, the sunroof glass will slide from:

The express open will operate from the closed or partially open position. To express open the power sunroof, turn the ignition to RUN. Press the sunroof switch rearward once. This will apply the sunroof switch low reference to the sunroof switch open signal circuit. From the closed position, the sunroof motor/module assembly will control the motor to lower the rear of the sunroof glass slightly and then slide it rearward between the roof and the headliner, along with the sunshade. The wind deflector will raise upward. To stop the sunroof glass in a desired position other than to the express open position, press the sunroof switch, in either direction, to stop the movement.

To close the power sunroof, turn the ignition to RUN, and from the:

To open the power sunroof to the vent position from the closed position, turn the ignition to RUN. Press and hold the sunroof switch forward. This will apply the sunroof switch low reference to the sunroof switch close signal circuit. The sunroof motor/module assembly needs to have a constant switch press to allow the sunroof control module to control the sunroof motor to tilt the rear of the glass upward to the full vent position.

The sunroof motor/module assembly has a bi-directional motor. The sunroof motor understands when it has driven the sunroof glass to the vent, close and full open positions based on the internal hall effect sensors within the sunroof motor/module assembly. The sunroof motor/module assembly interprets the hall effect sensor combinations and controls the sunroof motor to soft stop the sunroof glass at the positions.