System Components

System Components
MS45 Engine Control Module: The Engine Control Module (ECM) features a single printed circuit board with two 32bit microprocessors.


The task of the first processor is to control:
^ Engine Load
^ Electronic Throttle
^ Idle Actuator
^ Ignition
^ Knock Control
The task of the second processor is to control:
^ Air / Fuel Mixture
^ Emission Control
^ Misfire Detection
^ Evaporative Leak Detection
The 134 pin ECM is manufactured by Siemens to BMW specifications. The ECM is the SKE (standard shell construction) housing and uses 5 modular connectors. For testing, use the Universal Adapter Set (breakout bow Special Tool # 90 88 6 121 300.





System Components: Inputs Processing Outputs