General Description

General Description

For versions with fusebox "A":

The movement of the left front electric window (driver's side) is automatic, controlled by a control unit which operates it according to the following logic:

• keeping the pushbutton pressed (over 300 ms) the window opens or closes normally until the pushbutton is released;
• a short pulse (below appr. 300 ms.) operates the motor which automatically continues and only stops at the end of the stroke (window completely open or closed);
• an even shorter pulse (less than appr. 50 ms.) is considered by the control unit as an accidental shock and no action will result.

This operating logic takes place through the "key-operated" supply.

For versions with fusebox "B":

The movement of the left front window is manual: when the button is pressed in one direction or the other the window moves upwards or downwards: this only takes place through the "key-operated" supply.

The electrical mechanism that operates the right front window is - in both cases - of the conventional type: when the button is pressed the window rises or drops; it is fitted with two control switches: one on the right-hand door and one on the left-hand door; operation is only possible with the ignition key engaged.

unit from the part in which the contact has been closed.

The operating signals (up or down) leave pins 3 and 4 of connector B of N38 for left-hand window motor P15: 12 V and earth are inverted to change the direction of rotation

Pin 1 of connector B of N38 is connected to earth.

Conversely, the operation of the right-hand motor is controlled directly by one of the two switches B21 (B21a located on the right-hand door, B21b on the left) which are connected in series.

The "key-operated" supply passes through relay I12, supplied by direct voltage through the line of fuse G310. The relay is energised with the key-operated supply, via fuse F17 (box "A") or fuse F15 (box "C") still of G1.: the righthand window motor P14 is operated by one of the two switches B21 in one direction or the other depending on the origin of the 12V or earth signal.

Functional description

For versions with fusebox "A" or "C":

The power window control unit N38 is supplied at pin 2 of connector B by battery voltage through fuse F22 of fusebox G1.

The key-operated enable signal reaches pin 1 of connector A via fuse F17 (box "A") or fuse F15 (box "C") still of G1.

The control signals for the upward and downward stroke respectively reach pins 4 and 3 of connector A from the left-hand window control switch B53.

In fact, this double switch sends an earth to the control

For versions with fusebox "B":

The power window control unit N38 comprises a "bridge" on connector B which "relays" the supply and earth to the control switch of the left-hand window B22. This supply leads through wander fuse G311 and relay I12.

The "key-operated" consensus is received through fuse F17 of G1.

The double switch B22 sends the operating signals (up or down) for the left-hand window motor P15: 12 V and earth are inverted to change the direction of rotation.

Operation of the right-hand window is controlled directly by one of the two switches B21 (B21a located on the right-hand door, B21b on the left) which are connected in series

The "key-operated" supply leads through relay I12, energized through the line of fuse F17 of G1, and wander fuse G310. The motor for the right-hand window P14 is operated by one of the two switches B21 in one direction or in the other depending on the origin of the 2V and earth signals.