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Power and Ground Distribution: Description and Operation



Vehicle Electrical System Control Unit







The vehicle electrical system control unit has a communication interface with the generator that is used to preset the nominal charging voltage. The generator sends its utilization rate (DF signal) to the vehicle electrical system control unit over this interface. By evaluating the battery voltage and DF signal, the vehicle electrical system control unit evaluates the vehicle electrical system status and switches off comfort loads if necessary.

The battery voltage is monitored via a separate input. The vehicle electrical system control unit communicates with the DME control unit in order to increase the idling speed if necessary for the purpose of improving the vehicle electrical system status.
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