Common Powertrain Controller
The CPC communicates with the MCM unit installed on the vehicle over the J1939 datalink.
Data for specific applications is stored in the CPC. These include idle speed, maximum running speed, and speed limitation.
The CPC receives data from the following sources:
- The operator (accelerator pedal position, engine brake switch, etc.)
- Other electronic control units (for example, the anti-lock brake system)
- The MCM (oil pressure, coolant temperature, etc.)
From this data, instructions are computed for controlling the engine and transmitted to the CPC via the proprietary datalink.
| EPA07 DD15 Operator’s Guide – DDC-SVC-MAN-0003 |
| Generated on 10-13-2008 |
