E3051 Rear window mechanism (Euro3)

Description

The rear door electrically-operated windows can be operated by switches on the front driver's door or switches located on each of the rear doors.

Operation of the rear electrically-operated windows is manual (the window is raised/lowered only when the switch is pressed).

For safety reasons, a special lock switch on the driver's door cuts off power to all switches to prevent accidental activation from the rear seats, e.g. when children are present.

The rear electric windows circuit is protected by two specific fuses and controlled by a relay which supplies other ignition-key operated services. The fuse is located outside the junction unit, while the relay is located on the right hand side under the dashboard.

The rear electrically-operated windows will work only when the key is turned to MAR.

The control switch symbols are lit when the key is turned to MAR.

Description of operation

The optional services relay J60 controls the circuit for the rear electric windows, as well as the sun roof and heated seats: Wiring diagram E3060 SUN ROOF , Wiring diagram E3075 HEATED SEATS and Wiring diagram E3076 ELECTRICALLY-ADJUSTABLE SEATS .

The coil for relay J60 is energized when the ignition is switched on (INT/A) by the line for fuse F6 for additional fuse box B98B, whilst the supply at the relay contact arrives from the battery, from the line for maxifuse J/B2 (of B99).

This supply, passes through the rear electric window fuses F2 and F3 of B98 B, which guarantees the protection of the circuit and arrives at the switches in the front driver's door (H45 left and H46 right). The supply of the switches is therefore controlled by the ignition (INT/A) and they are connected to earth C20 (in this way they are also lit up when the ignition is switched on).

When these switches are operated, they send command signals (positive and negative) to the switches in the rear doors and from there to the (left) N65 and right N66 motors: reversing the signals according to the contact which is closed determines the direction of rotation of the actual motor.

The same supply controlled by the ignition (INT/A) also reaches the switches in the rear doors H53 and H54, passing through the safety switch H55, but only if it is in the enablement position. If this is not the case, the supply to the rear door switches is stopped.

Similar to the front switches, when the rear switches are activated, they send command signals (positive and negative) to the (left) N65 and (right) N66 motors: reversing the signals according to the contact which has been closed, determines the direction of rotation of the actual motor.

Wiring diagram

Components

Component location