DESCRIPTION

The electric windows for the doors are operated through the switches on the driver's door (both windows) and the passenger side (passenger side only).

The electronics inside the controls ensure the operation of the electric window motors which are operated automatically in accordance with the following logic:

- if the button is pressed for between 60 and 300 milliseconds, operation is manual: the glass goes up/down only with the button pressed;

- if the button is pressed for longer than 300 milliseconds, operation is automatic: even if the button is released, the glass continues to go up/down until the end of travel or the implementation of the anti-crush safety system if fitted;

- pressing the button again whilst the window is moving stops it in the position it is in;

- if the button is pressed for less than 60 milliseconds, this is ignored (it is treated as an accidental knock).

The electronics inside the motors manage the anti-crush safety function: i.e. it acquires information about the possible presence of an obstacle during window closure (rising); the anti-crush function is performed by a Hall effect sensor that senses overloads on the window motor; the intervention threshold is set when the force of the obstacle encountered along the window travel (e.g. a finger, a hand) exceeds 7/8 kg.

The electronic unit is automatically reversed on the actuator which retracts the window by around 20 mm as required by law.

In addition, if a fault is detected, the control unit inhibits the automatic operation, only allowing it in steps of 500ms each time the button is pressed.

Body Computer M001 is connected, via the CAN line, to instrument panel E050, to which it sends a signal that turns on the anti-crush safety function failure signal, where necessary.

When the doors are opened (both at the key on or the key off), the door nodes activate the short drop function to prevent interference between the glass and the roof.

The Short Drop position is fixed at about 8 mm from the windows completely closed position.

In detail: if the glass is rising when the door is opened, the window opens to the short drop position and NOT until it is completely shut. If the position of one or both of the window glasses is already at the level of the short drop position, no automatic movement takes place.

The electric window function operates only with the ignition on, with the following exception: after a key-off, the windows can be operated for 3 minutes; when this time period elapses, the system no longer acquires new commands.

If one of the doors is opened during the timed period, new commands are longer acquired, but any commands received before the opening of the door are brought to a conclusion.

If one of the doors is already open at the key off, any commands received before the opening of the door are brought to a conclusion.