GF91.25-P-0001CE Multicontour Seat (MCS), Function

GF91.25-P-0001CE Multicontour Seat (MCS), Function

- with CODE (409) Left/right front multicontour seats
- as of model year 2009
- /YoM 08










M40 Multicontour seat pneumatic pump
N10/2 Rear SAM control unit with fuse and relay module
N73 Electronic ignition switch control unit
CAN B Interior CAN

Function requirements, general
- Circuit 15 or circuit 15R ON
- No overvoltage or undervoltage
- No damage to the compressed air supply

Multicontour seat (MKS), genera
The multicontour seat can be adjusted individually.
The individual adjustment of the contour and the surface hardness of the backrest and of the seat cushion is made possible by filling and purging.

The air cushions are located as follows:
- in the backrest area at the left and right,
- in the upper lumbar area,
- in the lower lumbar area and
- in the front upper leg area of the seat cushion.

Lumbar support = curvature of spine in lumbar region.

The multicontour seat pneumatic pump is supplied with voltage by the rear SAM control unit.

The inflating and deflating of the individual air cushions is controlled manually via the:
- Control valve for seat cushion fore/aft adjustment
- Control valve for lower lumbar support adjustment
- Control valve for upper lumbar support adjustment
- Control valve for side bolsters adjustment located in the:
- Control valve block for multicontour seat

The multicontour seat enables the following subfunctions to be performed:
D Function sequence for adjusting the seat cushion length
D Function sequence for adjusting the lower lumbar area
D Function sequence for adjusting the upper lumbar area
D Function sequence for adjusting the lateral support

Function sequence for adjusting the seat cushion length
The front area of the multicontour seat cushion is adjusted using the control valve for seat cushion fore/aft adjustment.
When actuating the control valve for seat cushion fore/aft adjustment in the (+) or (-) direction, the seat cushion contour changes in the upper leg area by inflating or deflating the air cushion.

Function sequence for adjusting the lower lumbar area
The lower lumbar support area of the multicontour backrest is adjusted using the control valve for lower lumbar support adjustment.
When actuating the control valve for lower lumbar support adjustment in the (+) or (-) direction, the backrest contour changes in the lower lumbar support area by inflating or deflating the air cushion.

Function sequence for adjusting the upper lumbar area
The air cushion in the upper lumbar support area of the multicontour backrest is adjusted with the control valve for upper lumbar support adjustment.
When actuating the control valve for upper lumbar support adjustment in the (+) or (-) direction, the backrest contour changes in the upper lumbar support area by inflating or deflating the air cushion.

Function sequence for adjusting the lateral support
The lateral support of the multicontour backrest is adjusted using the control valve for side bolsters adjustment.
When actuating the control valve for side bolsters adjustment in the (+) or (-) direction, the air cushions of the left and right side bolsters of the multicontour backrest are inflated or deflated.