GF72.29-P-4141GM Left Front Door Control Unit, Component Description

GF72.29-P-4141GM Left Front Door Control Unit, Component Description
- refinement package
- as of model year 09

Component Identification:

Location
The left front door control unit is located on the door module behind the door trim.

Task
The left front door control unit has the following tasks:
^ Reading in of sensors, pickups and signals
^ Evaluation of input factors
^ Controlling function sequences
^ Actuation of components

Reading in of sensors, pickups and signals
The input factors are read in with the following connections:
^ Direct line
^ Front door LIN
^ Interior CAN

Direct line
The following sensors are read in via a direct line:
- Left front IR receiver (A26/1)
- Hall sensor in left front power window motor (M10/3)
- Mirror up/down adjustment potentiometer (M21/1r2)
- Mirror in/out adjustment potentiometer (M21/1r3)

The following switches are read via a direct line:
- Driver-side rear-end door open and close switch (S15/3) (with code (890) EASY-PACK liftgate)
- Left interior CL [ZV] switch (S85/5)

Front door LIN
The driver side power window and outside mirror adjustment switch group (S20/1) is read in by the left front door control unit via the front door LIN.

Interior CAN
The signals are read in by the left front door control unit via the interior CAN.
The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.

Controlling function sequences
The left front door control unit controls the following function sequences:
- Driver side power window adjustment
- Driver side outside mirror adjustment

Actuation of components
Components are actuated with the following lines:
^ Direct line

Direct line
The following components are actuated via a direct line:
- Left outside mirror turn signal lamp (E6/5)
- left front door entrance and exit lamp (E17/3)
- Left front door inside handle illumination (E17/11)
- Left front power window motor
- Left front door CL [ZV] motor (M14/6)
- Left electrically adjustable and heated outside mirror (M21/1)
- Left outside mirror ambient lamp (M21/1e1)
- Automatic mirror dimming (M21/1h1) (with code (249) Automatically dimming inside rearview mirror and outside mirror (driver))
- Mirror adjustment up/down motor (M21/1m1)
- Mirror adjustment up/out motor (M21/1m2)
- Power folding mirror (M21/1m3) (with code (500 ) Left/right folding outside mirror)
- Mirror heater (M21/1r1)

The left front door control unit supplies the connected controls with power from circuit 58d.