Operation Of The Sunroof; Operating Logic - Alfa Romeo 159 Training Material

BODYWORK
The sunroof consists of the following parts:
A frame consisting of two aluminium guides in which the mechanisms and the two crosspieces slide (front
crosspiece made of plastic and rear crosspiece make of metal and joined to side guides).
A right and left system of mechanisms inserted in aluminium guides for moving the glass panel operated by
an electrical motor via a metallic spiral wire.
A manually moveable sun blind with handle and slots for letting air through.
A tempered glass panel, 4 millimetre thick, low energy (<17%) and light (>35%) transmission.
A direct current motor and geared reducer, a magnetic wheel fitted on drive shaft, one or more Hall effect
sensors and a 6-pin interface connected to the vehicle wiring harness.
An electronic control unit.
A knob for selecting the various opening and closing positions with additional cut-out position.
1. Electrical motor
2. Racks
3. Emergency screw
4.
Electrical connector

11.1.2 Operation of the sunroof

The sunroof is moved along the sliding guides on the frame by an electrical motor which can be controlled manually
by means of the selector knob or remotely (where fitted) via a control sent by the body computer to the ECU.
The motor moves the flexible drive racks housed in the specific housings in the frame onto which the sunroof
supporting tilting mechanisms are anchored to the required point or position.
The sunroof is equipped with a manual blind and handle to shield from the sun.
The blind is folded away with the sunroof inside the roof panel. When closing the sunroof, the blind will partially
project to make the handle accessible.
The sunroof is operated by means of the opening/closing pre-selector on the front central ceiling light.

11.1.3 Operating logic

The operating logic is described below. The electrical motor is controlled by an ECU.
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ALFA 159 TRAINING MATERIAL
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