DME or DDE: digital engine electronics or digital diesel electronics
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 BMW 530i, 2006 BMW 525i, 2006 BMW 330xi, 2006 BMW 330i, and 2006 BMW 330Ci. However, it is still accessible from the selected car via links, so may be relevant.
The engine control sends the signal indicating that the engine is running to the AL control unit via the PT-CAN bus. The AL control unit notifies the engine control of the approximate drive torque of the power steering pump.