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Home >> BMW >> 2011 >> M3 2D Convertible, Standard >> Repair and Diagnosis >> General Information >> OEM General Information >> Functional Description -- M3 Convertible >> Charging System - Functional Description >> Bit Serial Data (BSD) Interface To Alternator >> Objective
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Bit Serial Data (BSD) Interface To Alternator: Objective

Precise calculation of alternator torque draw and control of the load-response function support a good engine idle Controlling alternator voltage based on setpoint data from the engine-management control unit allows the system to maintain a satisfactory charge balance for the battery.