Component description for adaptive damping system control unit - GF32.32-P-1010CE

WARNING: This page is about a different car, the 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.

MODEL 204.0/2 with CODE (483) ADVANCED AGILITY package as of Model Year 2009/modification year 08

MODEL 204.0/2 with CODE (483) ADVANCED AGILITY package as of model year 2012/YoM 11 model refinement package

MODEL 204.3 with CODE (483) ADVANCED AGILITY package

Fig 1: Locating Adaptive Damping System Control Unit

Courtesy of MERCEDES-BENZ USA

Location

The adaptive damping system control unit is located on the control unit supporting plate in the front passenger footwell.

Task

The adaptive damping system control unit does the following:

Reading in of sensors, pickups and signals
Evaluation of input factors
Actuation of components

Reading in of sensors, pickups and signals

The input factors are read in via the following connections:

Direct line
Chassis CAN (CAN E)

Direct line

The signals from the following components are read via a direct line:

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 lateral acceleration sensor (B24/5)

Chassis CAN

The following signals are read in over the chassis CAN:

Provided by instrument cluster (A1):
- Vehicle speed
Provided by the CDI control unit (N3/9) (on diesel engines) or the ME-SFI [ME] control unit (N3/10) (on gasoline engines):
- Circuit 61 terminal status
- Kickdown status (with transmission 722)
- Drive variant
By the front SAM control unit with fuse and relay module (N10/1):
- Vehicle dynamics status button (N72/1s23)
- Body variant
Provided by the Electronic Stability Program control unit (N30/4):
- Wheel speed
- Data of yaw rate sensor for lateral and longitudinal acceleration (B24/15) (model 204.0/2 up to 28.2.2011, model 204.9, model 204.0/2 as of 1.3.2011 (with code (233) DISTRONIC PLUS), model 204.3 (with code (233) DISTRONIC PLUS))
- Service brake status
- Braking torque
Provided by steering column tube module control unit (N80):
- Steering angle
- Steering angle rate of change

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 actuation of the components takes place via the following connections:

Direct line
Chassis CAN

Direct line

The following components are actuated via a direct line:

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 following components are actuated via the chassis CAN:

By the front SAM control unit:
- Light-emitting diode (LED) in the vehicle dynamics button over the instrument panel LIN (LIN 1)

Wiring diagram for adaptive damping system (ADS) control unit

PE32.32-P-2101-97FAA