Control Unit
The EHC control module is located in the right rear luggage compartment area in the module carrier next to the battery. On the E65/E66, the control module is connected to the KCAN S. The EHC control module receives the following information:
- Vehicle Ride Height
- Load Cutout Signal
- Terminal 15 ON/OFF
- Vehicle Speed
- Lateral Acceleration
- "Engine Running" Signal
- Flap Status (Door, Hood, Trunk)
The Control unit decides on a case by case basis whether a control operation is required in order to compensate changes in load. It prevents intervention in the case of other causes. This makes it possible to adapt the frequency, specified height, tolerance thresholds and battery load optimally by means of the control operation to the relevant situation.
In addition to handling the self levelling suspension, the control module monitors the system components as well as storing and displaying faults. The control module has full diagnostic capability.
The EHC module is a 26 pin module with an ELO type connector. The module is connected to the K CAN S. The majority of the input messages are from K CAN S.