ICM: Control unit for Integrated Chassis Management
New: Sensors that used to be installed separately in the DSC sensor are now fitted in the ICM control unit. The ICM control unit uses these sensors to calculate variables that are important for the dynamic handling characteristics of the vehicle at that time:
- Longitudinal acceleration and vehicle inclination in longitudinal direction
- Lateral acceleration and vehicle inclination in transverse direction
- Yaw rate
| Index | Explanation |
|---|---|
| 1 | Redundant lateral acceleration sensor |
| 2 | Longitudinal and lateral acceleration sensor |
| 3 | Output stages for Servotronic valve and ECO valve |
| 4 | Controller for FlexRay |
| 5 | Microcontrollers |
| 6 | Microcontrollers |
| 7 | Redundant rotation-rate sensor |
Initially, the sensor signals are related to the sensor housing. However, the driving stability control needs these variables related to the coordinate system of the vehicle. The ICM control unit performs the necessary conversion. The correction values necessary for this are determined by an adjustment during commissioning of the ICM control unit.
An adjustment of the integrated sensors is necessary after replacement of the ICM control unit. The adjustment must take place while the vehicle is on a subsurface that is horizontal in longitudinal direction and transverse direction. Terminal 15 must be switched on.