DDEC VI SYSTEM DDEC VI SYSTEM The engine is equipped with a fully electronic control system, which regulates the fuel injection quantity and timing using solenoid valves, allowing extremely low-emission operation. Besides the engine and its related sensors, the system is composed of the following: Motor Control Module The MCM (see Figure 18) is located on the left-hand side of the engine. The MCM processes the data received from the CPC, for example the position of the accelerator pedal, engine brake, etc.
The Motor Control Module (MCM) The Common Powertrain Controller (CPC) located under the right-hand dash panel The two control units are connected by a proprietary datalink through which all necessary data and information can be exchanged. The CPC then broadcasts all information on the J1587 and J1939 datalinks, where it can be read by the diagnostic tool. Figure 18 MCM These data are evaluated together with the data from the sensors on the engine, such as coolant and fuel temperature and oil and charge pressure. The engine control system monitors both the engine and the datalink.
When a malfunction or other problem is detected, the system selects an appropriate response; for example, the emergency running mode may be activated. The Accelerator Pedal Assembly (AP) eliminates the need for any throttle linkage. 40 All information subject to change without notice. (Rev. 04/08) DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION