For more information about the operation of the sunroof panel, refer to "Operation manual".
Switch inputs
The rocker switch for the sunroof panel is mounted on the roof console and is connected to the control unit by two signal power lines. When the switch is in its original (central) position, both connections to the control unit are open. When the switch is pressed to open the glass panel, the power signal line from pin 4 of the control unit electrical connector creates a ground connection through the switch contacts. When the switch is pressed to close the glass panel, the switch grounds the power signal line from pin 8 of the control unit electrical connector.
When a request is made to raise the sunroof to the tilt position, the switch grounds the power signal line from pin 8 of the electrical connector of the control unit, as described in the closing operation.
Pinching Prevention
The sunroof panel motor is calibrated to detect a blockage preventing the glass panel from closing. The force required to close the glass panel when the vehicle is stationary does not exceed approx. 100 N. When this limit is reached, the control unit will turn on the electric motor in the opposite direction to move the glass panel 200 mm.
The control unit also monitors external forces that can increase the force required to close the glass panel. This value is determined by the control unit based on vehicle speed, poor road conditions and excessive outside temperature. If necessary, the control unit can increase the maximum force applied by the electric motor to approximately 150 N.
Vehicle speed signal
The vehicle speed signal is used by the sunroof panel control unit to adjust the sensitivity of the anti-pinch function. This signal allows the control unit to take wind resistance into account when closing the sunroof panel when the vehicle is moving at speeds above 4 km/h (mph).
The vehicle speed signal is generated by the ABS module and transmitted via the high speed CAN bus. The CJB converts the vehicle speed signal into a voltage pulse signal and transmits it to the control unit. This signal pulses at a frequency of 5000 pulses per kilometer (8000 impulses per mile) and has a duty cycle of 50% on, 50% off.
Calibration
If the battery is disconnected or power is interrupted while the sunroof is partially open, the sunroof needs to be recalibrated.
After connecting the battery or restoring power, calibrate the sunroof as follows:
- Turn on the ignition.
- With the sunroof closed, press and release the front of the switch. The sunroof will move to a tilted position for calibration.
- Press the front of the sunroof switch for twenty seconds.
- After twenty seconds, the hatch will begin to move. Hold the front of the switch depressed until the sunroof fully opens and then closes.
- Release the switch when the open/close cycle is completed and the sunroof stops.
The sunroof can now operate normally.
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