Detroit Diesel Electronic Controls (DDEC) 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:
• 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.
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.
Motor Control Module Description
The Motor Control Module (MCM) is typically located on the left-hand side of the
engine.
Figure 6. Motor Control Module
The MCM processes the data received from the Common Powertrain Controller
(CPC), for example the position of the Accelerator Pedal (AP), engine brake, etc.
Detroit Diesel Electronic Controls (DDEC) System
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All information subject to change without notice.
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DDC-SVC-MAN-0175