Vacuum/Pressure Pump: Description and Operation

GF91.25-P-5204TX Pneumatic Pump For Dynamic Seat, Component Description
- with CODE (433) Left dynamic seat including multicontour seat
- with CODE (434) Right dynamic seat including multicontour seat

Component Identification:

The pneumatic pump for dynamic seat control is located on the left rear in the luggage compartment.

Tasks
^ Pressure supply of the dynamic seat system
^ Pressure monitoring of the reservoir via sensor
^ Switching the solenoid valve for compressed air supply On/Off
^ Leakage detection of the pneumatic system
^ Automatic cutout of compressed air supply after 60 s continuous pump operation
^ Pressure relieve run of pneumatic system to drain compression moisture in the pressure reservoir using a pressure relieve valve attached to the container