Control Module
The Control Module is mounted in the module carrier box in the luggage compartment on the right side. It contains the processing electronics and final stages for operation of the EHC system.
Locating EHC Control Module. Scheme 179
The control module receives the following inputs for its processing functions
- KL 30 & 31 (Power/Ground)
- KL 15
- Left & Right Ride Height Sensors
- K Bus for; Vehicle speed Engine running Door/tailgate - open/closed
The control module incorporates two filters (slow/rapid) for processing the input signals from the ride height sensors. Depending on the operating mode, either the slow or rapid filter is used to check the need for a regulating sequence.
The slow filter is used during the normal operation mode to prevent normal suspension travel from causing the system to make adjustments.
Identifying EHC Control Module Diagram. Scheme 180
The rapid filter is used during the pre-run and tailgate (LID) modes to ensure that the suspension is adjusted quickly while the vehicle is being loaded or checked prior to operation.