System Overview ME 7.0

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Fig 1: Identifying System Overview ME 7.0

Courtesy of VOLVO CARS OF NORTH AMERICA.

ME 7.0 is a further development of Motronic 4.4 and has similarities regarding sensors and their functions. ME 7.0. is on all B6304S, B6284T and B52X4T engines from model year 1999. The biggest new feature regards the communication between the ECM and other modules. Communication occurs via network.

The following modules communicate by ECM (Engine Control Module) via the network:

ETM (Electronic Throttle Module)
TCM (Transmission Control Module)
ABS (Antilock Braking System)
CEM (Central Electronic Module), Central computers in the network and shifts between the network's high speed section (250 kbps) and its low speed section (125 kbps)
The high speed section includes the following modules: ECM, ETM, TCM, ABS and also the CEM.
DLC, data link connector for connecting to appropriate scan tool.
DIM (Driver Information Module), combined instrument panel.
CCM (Climate Control Module).
SWM (Steering Wheel Module).

ME 7.0 contains a large number of sensors that operate according to the previously known principles and sends its information by analog signals to the ECM.

As applies to controlled components these also function to known principles, with a few exceptions.

For more information about the electronic throttle unit system and related components such as the throttle unit, accelerator pedal sensor, stop lamp switch, clutch pedal sensor switch and brake pedal position sensor, see Design and Function .