Left view of vehicle |
N51/3 | AIR BODY CONTROL control unit |
N51/8 | AIR BODY CONTROL Plus control unit |
P32.22-2595-05
Location
The AIR BODY CONTROL control unit is located under the left front seat. The AIR BODY CONTROL Plus control unit is located in the trunk on the left.
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
Reading in of signals
The input factors are read in over the following connections:
Direct line
Chassis FlexRay (Flex E)
Direct line
The signals from the following components are read in by the AIR BODY CONTROL control unit via a direct line:
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)
The signals from the following components are read in by the AIR BODY CONTROL Plus control unit via a direct line:
Circuit 30g (switched battery positive)
Circuit 31
Chassis FlexRay
The AIR BODY CONTROL control unit uses the chassis FlexRay and receives signals from the following control units:
CDI control unit (N3/9) (with diesel engine)
ME-SFI control unit (N3/10) (with gasoline engine)
Electronic Stability Program control unit (N30/4)
Left lower control panel (N72/4)
Fully integrated transmission control unit (Y3/8n4)
Electronic ignition lock control unit (N73)
The AIR BODY CONTROL Plus control unit uses the chassis FlexRay and receives signals from the following control units:
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 affected components are then actuated.
Actuation of components
Components are actuated with the following lines:
Direct line
Chassis FlexRay
Direct line
The following components are actuated by the AIR BODY CONTROL control unit via a direct line:
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)
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 following components are actuated by the AIR BODY CONTROL Plus control unit via a direct line:
Left front axle air suspension valve unit (Y51/2)
Air suspension valve 1, front left (Y51/2y1)
Right front axle air suspension valve unit (Y52/2)
Air suspension valve 1, front right (Y52/2y1)
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)
Chassis FlexRay
The AIR BODY CONTROL control unit uses the chassis FlexRay and sends signals to the following control units:
Instrument cluster (A1), via the electronic ignition lock control unit and the user interface CAN (CAN HMI)
Electronic Stability Program control unit
ME-SFI control unit (with gasoline engine) or CDI control unit (with diesel engine), via the powertrain control unit and the engine CAN (CAN C)
Fully integrated transmission control control unit