ELECTRIC REAR WINDOWS - Description

Description

The boot control unit controls rear window motor operation directly.

Driver door controls are sent via the CAN network from the control unit on the door.

The motors are controlled in manual or automatic mode according to the specififcation.

Automatic operation takes place as follows:

• if the button is pressed for between 60 and 300 milliseconds, the operation is manual: the window closes/opens only when the button is pressed;
• if the button is pressed for over 300 milliseconds, the operation is instead automatic: even if the relevant button is released, the window continues to close/open as far as the end of travel or until the anti-collision safety system intervenes, if applicable;
• a subsequent press on the button during movement of the window locks it in its current position;
• if the button is pressed for less than 60 milliseconds, it is ignored (it is considered to have been knocked accidentally).

The control unit of the controls unit on the door also acquires information on the possible presence of an obstacle during movement of the window during closing (raising) via the anti-pinch seals: in this case the window travel stops immediately and is reversed; this happens in both manual and automatic operation.

The circuit is controlled by the services relay and protected by two fuses, all located in the unit under the dashboard.

Movement takes place whether the ignition in ON or OFF.

With the ignition on, it takes place as described above; in addition during starting, this relay is temporarily deactivated.

When the ignition is off, the Body Computer keeps the relay activated - which also supplies the door mirrors - for 3 minutes, but deactivates it immediately when one of the two front doors is opened.

Movement is also disabled when the battery voltage is below 10 V.

The control unit on the driver's door also manages the locking of the rear controls (protection), done by pressing the specific 'LOCK button: the lock status is indicated by an LED on the rear of the button coming on and the absence of illumination of the rear control buttons. With lock activated, no button controls the electric rear windows.

The windows are automatically opened or closed by a specific prolonged command (over 3 seconds) sent by the remote control button, if the ignition is off;

The remote control receiver aerial is connected directly to the Body Computer which contains the electronics for the actual receiver.

Passive entry

Description

The RF aerial-receiver sends the Passive Entry control unit a door opening/closing signal in the same way as a conventional remote control. for further details. See E7018 PASSIVE ENTRY