Electric Motor With Integrated Control Module
The control module contains software that governs the electric motor. This software controls the anti-trapping function, calibration of the sun roof and the opening mechanism.
Anti-trapping function
The anti-trapping function is a safety requirement to prevent people from being injured by the sun roof when it is closed. The maximum closing force may not exceed 100 N at a speed of 50 km/h. At speeds above 50 km/h, the closing force is adjusted according to the vehicle speed to compensate for the wind strength.
Calibration of sun roof
The sun roof is calibrated to locate the glass in its neutral position and to ensure that the anti-trapping function works satisfactorily.
Calibration must be performed every time the sun roof has been serviced.
When installing a new electric motor / control module, new calibration must be carried out according to the method, see INFORMATION/REPAIR/CLEANING, CHECKING AND ADJUSTING/Bodywork and interior trim/Doors and hatches/Sun roof.
When installing a previously mounted electric motor / control module, recalibration must be carried out according to the method, see INFORMATION/REPAIR/CLEANING, CHECKING AND ADJUSTING/Bodywork and interior trim/Doors and hatches/Sun roof.
Opening mechanism
The main positions of the glass panel are programmed in the control module and are: angled, closed and fully open sun roof. The position is determined in the control module using a gear wheel and two Hall sensors. The Hall sensors register the number of turns made by the gear wheels to move the glass to its position.
In order to control the above functions, the control module receives three signals from the central electronic module (CEM):
- X-supply
- the vehicle speed
- closing / calibration signal.
The control module is also linked to battery voltage and the controls for the sun roof.
The control module, which is integrated with the sun roof electric motor, checks the voltage to the electric motor. The nominal value of the voltage is 12 V and the maximum load during normal operation is 5 A.
The electric motor drives a gear wheel which is aligned with the drive cables. The gear wheel causes the cables to move.
The electric motor with the integrated control module is installed using three screws on the front section of the cassette.
Emergency closing screw
There is an emergency closing screw (1) on the electric motor. The screw can be turned to the right or left using an Allen key to open or close the sun roof respectively.