Sunroof Description and Operation one connector module

The power sunroof system consists of the following components:

The sunroof switch is a digital rotary type with five outputs using the sunroof switch data 1 through data 5 signal circuits to the sunroof module. The coded inputs to the sunroof module will initiate a request to slide the sunroof window to a specific position. The sunroof switch data 6 signal circuit is an override circuit output for a manual close. The sunroof switch functions are:

The sunroof switch actually has 4 vent and 13 open selections. The first selection on either side of the closed position, are unused selections.

Battery positive voltage is supplied at all times to the sunroof control module (sunroof motor/actuator) from the SUNROOF MOD 30-A fuse located in the right rear fuse block. With the ignition in the ON or ACCESSORY positions, the sunroof enable signal circuit is pulled low by the rear integration module (RIM) allowing for sunroof operation. Once the ignition switch is turned to OFF, the sunroof will continue to operate until any door is opened or when the Retained Accessory Power (RAP) has timed out. For a complete description of RAP operation, refer to Retained Accessory Power (RAP) Description and Operation. Ground for the sunroof control module is supplied from G402.

The power sunroof is operated from the sunroof switch that is located in the overhead console. The sunroof switch, when rotated to a selection, will send coded information to the sunroof module as to what position the sunroof window is to slide to. The sunroof module will then command the motor to slide the sunroof glass to the requested position.

To open the power sunroof to an open position, turn ignition to ON, rotate the sunroof switch to any of the twelve open selections. The sunroof switch will send a coded input through the sunroof switch data 1 through 5 signal circuits to the sunroof module. The sunroof module will interpret the inputs and command the motor, considering the inputs from the hall effect sensors internal to the module, to slide the window to the specific requested position. The sunshade panel will slide along with the window.

To close the power sunroof, turn ignition to ON, rotate the sunroof switch to the flush close selection. The sunroof switch will send a coded input through the sunroof switch data 1 through 5 signal circuits to the sunroof module. The sunroof module will interpret the inputs and command the motor, considering the inputs from the hall effect sensors internal to the module, to slide the window to the close position. The sunshade panel will have to be manually slid closed.

To open the power sunroof to a vent position, turn ignition to ON, rotate the sunroof switch to any of the three vent selections. The sunroof switch will send a coded input through the sunroof switch data 1 through 5 signal circuits to the sunroof module. The sunroof module will interpret the inputs and command the motor, considering the inputs from the hall effect sensors internal to the module, to slide the window to the specific requested position. The sunshade panel will have to be manually slid open.

The override function is used when needing to force a closing of the sunroof window. To override the system:

1. Turn the ignition ON.
2. Rotate the sunroof switch to the close position.
3. Press upward.

The sunroof switch data 6 circuit, or override circuit, will become grounded at the sunroof module. As long as the sunroof module sees this input, it will continue to slide the sunroof window to close, regardless of the other sunroof switch data circuits inputs.

If a condition exists that causes the anti-pinch feature of the sunroof to activate due to an obstruction, the sunroof glass will stop and it will reverse back to the full open or vent position. In an emergency, the anti-pinch feature can be overridden in a supervised mode.

To temporarily override the anti-pinch guard, turn the sunroof switch to the close position and press upward and continue pressing upward until the sunroof reaches the desired position. Once the switch is released the anti-pinch feature is again enabled.

The power sunroof system consists of a 12 volt, permanent magnet, reversible, intermittent duty type DC motor, with an internal over current protection device that is part of a motor/module assembly. When the motor is not operating both control circuits are grounded. When the motor drives the sunroof glass in the direction from the vent position to the closed position then to the open position, the following occurs:

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