Module, Active Damping Control (ADCM): Operation

WARNING: This page is about a different car, the 2021 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

The Active Damping Control Module (ADCM) uses the Controller Area Network (CAN) bus to communicate with multiple Electronic Control Units (ECUs). The ADCM has the following inputs:

Vehicle Speed Sensor (VSS).
Steering Angle Sensor (SAS) position.
Throttle Position Sensor (TPS).
Active Damping System (ADS) input switch.
Three acceleration sensors.

The ADS input switch is a soft touch button on the radio display. When the ADS input switch is pressed with the key in the ON or RUN position, a signal is sent over the CAN bus to the ADCM and the Transmission Control Module (TCM) to change modes. The resulting change is indicated on the radio display.

The ADCM controls the suspension and ride for the Street and Racing Technology (SRT) version of this vehicle by adjusting the rebound and jounce of the shock assemblies using the above information and predetermined settings for maximum vehicle control. The shock absorbers are unique to the ADS. Each shock absorber has a valving unit that is external, but still part of the shock absorber. Inside each valving unit are two solenoids that control the damping valves to alter the ride of the vehicle. The shocks are replaced as an assembly as they cannot be disassembled for repair.

The two front acceleration sensors are mounted with one on each wheel well. The rear acceleration sensor is mounted in the right rear wheel well on the shock tower. The ADCM is located in the left side of the trunk.