Switch Inputs
The roof opening panel rocker switch is mounted in the roof console and is provided 2 signal feeds by the control unit.
When the switch is in the rest (central) position, both connections from the control unit are open circuit. When the switch
is pressed to open the glass panel, the signal feed from pin 4 of the control unit electrical connector is provided a ground
path through the switch contacts. When the switch is pressed to close the glass panel, the switch grounds the signal feed
from pin 8 of the control unit electrical connector.
When tilt operation is requested, the switch grounds the signal feed from pin 8 of the control unit electrical connector as
described for 'close' operation.
Anti-Trap
The roof opening panel motor is calibrated to detect a blockage that will prevent the glass panel from closing. The force
required to close the glass panel on a stationary vehicle will not exceed approximately 100 Newtons (N). If this limit is
reached, the control unit will power the motor in the opposite direction to reverse the position of the glass panel by 200
mm.
The control unit also monitors external forces which may increase the force required to close the glass panel. The control
unit bases this figure on vehicle speed, rough road conditions, and extreme ambient air temperatures and may increase
the maximum force applied by the motor to approximately 150 N if required.
Vehicle Speed Signal
The vehicle speed signal is used by the roof opening panel control unit to adjust the sensitivity of the anti-trap feature.
This signal allows the control unit to take into account wind resistance when closing the roof opening panel at vehicle
speeds higher than 2.5 mph (4 kph).
The vehicle speed signal originates in the ABS module, and is broadcast over the high speed CAN bus. The CJB converts
the vehicle speed signal into a pulsed voltage signal for delivery to the control unit. This signal pulses at a rate of 8,000
pulses per mile (5,000 pulses per kilometer), and has a duty cycle of 50% on 50% off.
Calibration
If the battery is disconnected, or the power supply is interrupted, whilst the sunroof is partially open it will need to be
recalibrated.
Once the battery is reconnected, or the power supply is restored, recalibrate the sunroof as follows:
Switch the ignition on.
With the sunroof closed, press and release the front of the switch. The sunroof will move to the tilted position
ready for calibration.
Press the front of the sunroof switch, and hold for twenty seconds.
After twenty seconds the sunroof will begin to move. Keep the front of the switch pressed until the sunroof has
fully opened, then closed.
Once the open/close cycle has completed and the sunroof has stopped moving, release the switch.
The sunroof can now be operated as normal.