GF32.22-P-5109FL AIRmatic Control Unit, Component Description

GF32.22-P-5109FL AIRmatic control unit, component description
- with CODE (489) AIRMATIC (air suspension with continuous damper adjustment)
- with CODE (488) Steel/air suspension

Component Identification:

Location
The AIRmatic control unit is mounted under the front-passenger footplate.

Task
The AIRmatic control unit has the following tasks:
^ Reading in of sensors, pickups and signals
^ Evaluating input factors
^ Actuation of components

Reading in of sensors, pickups and signals
The input factors are read in with the following connections:
^ Direct lines
^ Chassis CAN (CAN E)

Direct lines
The following components are read in via direct lines:
- Circuit 30g (switched battery positive)
- Circuit 31
- Left rear level sensor (B22/7)
- Left front level sensor (B22/8)
- Right front level sensor (B22/9)
- Right rear level sensor (B22/10)
- Left front body acceleration sensor (B24/3)
- Right front body acceleration sensor (B24/4)
- Left rear body acceleration sensor (B24/5)
- AIRmatic pressure sensor (Y36/6b1)

Chassis CAN
The AIRmatic control unit is a station on the chassis CAN and receives signals from, for example, the following control unit:
- Electronic Stability Program control unit (N30/4) (without code (233) DISTRONIC PLUS)

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.

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

Direct lines
The following components are actuated via direct lines:
- AIRmatic pressure reduction valve (A9/1y1)
- AIRmatic relay (K67)
- Left front level control valve (Y36/6y1), with code (489) AIRmatic (air suspension with continuous damper adjustment)
- Right front level control valve (Y36/6y2), with code (489) AIRmatic (air suspension with continuous damper adjustment)
- Left rear level control valve (Y36/6y3)
- Right rear level control valve (Y36/6y4)
- AIRmatic central reservoir filling valve (Y36/6y5)
- Left front axle damping valve unit (Y51)
- Right front axle damping valve unit (Y52)
- Left rear axle damping valve unit (Y53)
- Right rear axle damping valve unit (Y54)

Chassis CAN
The AIRmatic control unit is a station on the chassis CAN and sends signals to, for example, the following control unit:
- Instrument cluster (A1)