GF82.20-P-5216GM Overhead Control Panel Control Unit, Component Description

GF82.20-P-5216GM Overhead Control Panel Control Unit, Component Description

Component Identification:

Location
The overhead control panel control unit is located in the front area on the headliner.

Task
The overhead control panel control unit has the following tasks:
^ Reading in of sensors, pickups and signals
^ Evaluation of input factors
^ Control of systems
^ Voltage supply to components
^ Actuation of components

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

Direct line
The signals from the following components are read in by the overhead control panel control unit via a direct line:
- Rear dome lamp switch
- Door contact ON and OFF switch
- Interior lamp switch, 1st seat row
- Left reading lamp switch, 1st seat row
- Right reading lamp switch, 1st seat row
- SOS pushbutton switch

In addition with code (413) Panoramic glass sunroof with top sliding sunroof:
- Hall sensor 1, roller sun blind (M12/5b1)
- Hall sensor 2, roller sun blind (M12/5b2)
- Hall sensor 1, panoramic sliding roof (M12/6b1)
- Hall sensor 2, panoramic sliding roof (M12/6b2)
- Hall sensor 3, panoramic sliding roof (M12/7b1)
- Hall sensor 4, panoramic sliding roof (M12/7b2)
- Roof switch

In addition with code (414) Power glass tilting/sliding roof:
- SR Hall sensor 1 (M12b1)
- SR Hall sensor 2 (M12b2)
- Roof switch

Serial bus
The signals from the following component are read in by the overhead control panel control unit via a serial bus:
- Rain/light sensor (B38/2)

Interior CAN
The signals are read in by the overhead control panel control unit via the interior CAN.
The resulting functions are described in the relevant 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 relevant components are then actuated.

Control of systems
The overhead control panel control unit actuates the following systems:
- Interior illumination (IBL)
- Panoramic glass sunroof (with code (413) Panoramic glass sunroof with top sliding sunroof)
- Tilting/sliding roof (SR [SHD]) (with code (414) Power glass tilting/sliding roof)

Voltage supply to components
The following components are supplied with voltage by the overhead control panel control unit:
- Inside rearview mirror unit (A67)
- Rain/light sensor
- Left rear glass breakage sensor (B39), right rear glass breakage sensor (B39/1) and rear window glass breakage sensor (B39/4) (with code (551) Anti-theft alarm system (ATA [EDW]))
- Interior protection sensor (B44) (with code (882) Interior monitoring (with ATA [EDW] only))
- Left sun visor with illuminated mirror (E14/1)
- Right sun visor with illuminated mirror (E14/2)
- 3rd seat row dome lamp (E15/3) (with code (847) 3rd seat row and code (876) Interior lights package)
- Left dome lamp, 2nd seat row (E15/12)
- Right dome lamp, 2nd seat row (E15/13)

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

Direct line
The following components are actuated with a direct line:
- Left reading lamp (A67e1)
- Right reading lamp (A67e2)
- Ambient lamp (A67e3)
- Center cargo area dome lamp (E15/4) (on model 164.1, on model 164.8 and 251.0/1 without code (876) Interior lights package)
- 3rd seat row dome lamp (on model 164.8, 251.0/1 with code (847) 3rd seat row and code (876) Interior lights package)
- 2nd seat row left dome lamp - 2nd seat row right dome lamp

In addition with code (413) Panoramic glass sunroof with top sliding sunroof):
- Roller sun blind drive unit (M12/5)
- Panoramic sliding sunroof drive unit 1 (M12/6)
- Panoramic sliding sunroof drive unit 2 (M12/7)

In addition with code (414) Power glass tilting/sliding roof:
- Tilting/sliding roof (SR [SHD]) drive unit (M12)