CL 550 4MATIC (216.386) V8-5.5L (273.961) (2009)
Power Seat Control Module: Description and Operation
GF91.25-P-5202LE Dynamic Seat Control Unit, Component Description
GF91.25-P-5202LE Dynamic Seat Control Unit, Component Description
- with CODE (432) Left and right dynamic multicontour seat as of Model Year 2009 /YoM 08 [model 216.3]
- with CODE (432) Left and right dynamic multicontour seat as of Model Year 2009 up to 2010 /YoM 08 up to YoM 09 [model 221.1]
Component Identification
Location
The left and right front dynamic seat control unit is located in the center of the driver seat or front passenger seat backrest frame.
Tasks
-
Inflation and deflation of the multicontour backrest in accordance with the requests issued by the driver or front passenger
-
Actuation of massage function
-
Actuation of the dynamic lateral support
-
Communication via the interior CAN (CAN B) with the left front seat control unit (N32/1) or right front seat control unit (N32/2)
-
Adjustment of seat hardness and seat contour
-
Actuation of the pressure valves for seat backrest and seat cushion as well as shoulder support, lateral support, and upper leg support
-
Adjusting the stored pressure values when calling up the memory feature and storing the actual contours
-
Actuation of the pneumatic pump for dynamic seat control (M40/1)
These are grouped as follows:
^
Reading in of sensors and signals
^
Evaluation of input factors
^
Actuation of components
Reading in of sensors and signals
These input factors are read in via the following connections:
^
Direct line
^
Interior CAN
Direct line
-
Circuit 30
-
Tml. 31
-
Piezo sensor in pressure sensor valve for measurement of air pressure in the individual air cushions of the contour insert in the backrest
-
Piezo sensor in pressure sensor valve for measurement of air pressure in the individual air cushions of the contour insert in the seat cushion
Interior CAN
The front dynamic multicontour seat control unit communicates via the interior CAN with:
-
the left front seat control unit; adjustment and storage of seat contours
-
the right front seat control unit; adjustment and storage of seat contours
-
the pneumatic pump for dynamic seat control; actuation of the compressed air supply
-
the central gateway control unit (N93) as router for signals from:
-
the ESP control unit (N47-5); for the dynamic and PRE-SAFE function
-
the COMAND control unit (A40/3) for adjustment functions
Evaluation of input factors