Air Body Control Control Unit, Component Description - GF32.22-P-5111FR
Model 257, 290 up to model year 2021 with code 489 (AIR BODY CONTROL)
Shown on model 257
Location
The AIR BODY CONTROL control unit and the AIR BODY CONTROL Plus control unit are located in the control unit carrier in trunk.
Tasks
The AIR BODY CONTROL control unit and the AIR BODY CONTROL Plus control unit have the following tasks:
- Reading in of signals
- Evaluation of input factors
- Actuation of components
- Sending signals Reading in of signals
The input factors are read in via the following connections:
- Direct lines
- Suspension FlexRay (Flex E)
Direct lines
The AIR BODY CONTROL control unit reads in the signals from the following components over direct lines:
- 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)
- Pressure sensor for AIR BODY CONTROL (Y36/6b1)
Chassis FlexRay
The AIR BODY CONTROL control unit also reads in the following signals over the suspension FlexRay:
- Atmospheric pressure
- Intake air temperature
- Wheel speed
- Displayed vehicle speed
- Turn rate, lateral acceleration and longitudinal acceleration
- Brake torque
- Status of service brake
- Transmission mode, request
- Status of vehicle level button (N72/4s2)
- Status of engine operation
The AIR BODY CONTROL Plus control unit receives information and requests over the suspension FlexRay AIR BODY CONTROL control unit.
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.
Actuation of components
The AIR BODY CONTROL control unit actuates the following components over direct lines:
- AIR BODY CONTROL pressure relief valve (A9/1y1)
- AIR BODY CONTROL relay (K40/8kR)
- Left front level control valve (Y36/6y1)
- Right front level control valve (Y36/6y2)
- Left rear level control valve (Y36/6y3)
- Right rear level control valve (Y36/6y4)
- AIR BODY CONTROL central reservoir filling valve (Y36/6y5)
- Left front axle damping valve unit (Y51)
- Solenoid valve 1, left front (Y51y1)
- Solenoid valve 2, left front (Y51y2)
- Right front axle damping valve unit (Y52)
- Solenoid valve 1, right front (Y52y1)
- Solenoid valve 2, right front (Y52y2)
- Left rear axle damping valve unit (Y53)
- Solenoid valve 1, left rear (Y53y1)
- Solenoid valve 2, left rear (Y53y2)
- Right rear axle damping valve unit (Y54)
- Solenoid valve 1, right rear (Y54y1)
- Solenoid valve 2, right rear (Y54y2)
The AIR BODY CONTROL Plus control unit actuates the following components over direct lines:
- Left front axle air suspension valve unit (Y51/2)
- Air suspension valve 1, left front (Y51/2y1)
- Air suspension valve 2, front left (Y51/2y1)
- Right front axle air suspension valve unit (Y52/2)
- Air suspension valve 1, front right (Y52/2y1)
- Air suspension valve 2, front right (Y52/2y2)
- Left rear axle air suspension valve unit (Y53/2)
- Air suspension valve 1, rear left (Y53/2y1)
- Air suspension valve 2, rear left (Y53/2y2)
- Right rear axle air suspension valve unit (Y54/2)
- Air suspension valve 1, rear right (Y54/2y1)
- Air suspension valve 2, rear right (Y54/2y2)
Sending signals
The AIR BODY CONTROL control unit also sends the following signals over the suspension FlexRay:
- Fault message, request
- System and warning messages, request
- Actuation of air suspension valves, request
The AIR BODY CONTROL Plus control unit sends the status of the AIR suspension valves over the suspension FlexRay to the AIR BODY CONTROL control unit.
| Wiring diagram for AIR BODY CONTROL control unit | PE32.32-P-2102-97XBA |