Well, DCC is actually Tenneco/Monroe's CVSAe system:
Tenneco’s continuously variable semi-active suspension solution which continuously senses the road and driving conditions to adjust the four dampers in real time for a more comfortable and controlled ride. The four electronically controlled dampers connect to an Electronic Control Unit (ECU) which manages all the sensor inputs like wheel accelerations, body displacement and steering angle, and drives the damper settings every 10 milliseconds to deliver optimal ride comfort and vehicle control in all road and driving situations. It is based on a triple tube damper design which has one externally mounted active hydraulic valve to control the damping. The driver can also select a preferred driving style, e.g. more comfort or more dynamic. This product has proven itself on over 40 different vehicle models. With an evolved damper and hydraulic valve design and improved performance, this product is still market leading today.
Additionally stuff from them says:
Developed by Tenneco in conjunction with Öhlins Racing, the CVSA system is a semi-active suspension that continuously adjusts damping levels according to road conditions and vehicle dynamics, such as speed, turning and cornering, delivering comfort without sacrificing the safety of sure handling. A powerful Electronic Control Unit (ECU) triggers the CVSA system. Found at the heart of the CVSA unit, the ECU is designed to exploit the full potential of the electro-hydraulic valving system by processing input data sent by a group of sensors placed at key locations on the vehicle. Additional input signals are provided from other modules sharing the CAN (Controller Area Network) bus. The CVSA utilizes control software that processes the sensor information regarding steering wheel angle, vehicle speed, brake pressure and other chassis control information and sends signals that independently adjust the damp-ing level of each shock absorber valve.
CVSA dampers allow a large separa-tion between maximum and minimum damping levels and adjust instanta-
neously to ensure the optimum in ride comfort and firm, safe vehicle control.
So it sounds like the Monroe ECU is where the amount of dampening is configured...
The article goes on to say:
DiagnosticTrouble Codes. The DTCs related to the ride control system are not recorded in the Engine Control Module. These codes are logged in a dedicated control module or the Body Control Module, requiring a scan tool capable of accessing these ECUs. Relying on the data provided by a generic tool is causing many techs to miss needed information. “Techs need to be aware that replac-ing these units will ‘turn out the light’ when the code specifically indicates an issue with a damper, or a solenoid that is integrated into the damper,” Bacarella cautions. “Many techs are not as aware of diagnosing BCM issues as they are with ECMs. They’ve been taught how to read and resolve engine-related DTCs but unfortunately some of these classes don’t explain that there are other codes to be found.
So it sounds like another controller on the CANBUS, which may or may not be electronically configurable.
I'd guess probably NOT by virtue of making changes to it could compromise the safety of the vehicle and they tend to lock those sort of things down!!!
