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Home >> Volvo >> 2009 >> C30 R-Design, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control Module (ECM) - Description Of Frozen Values And Behaviors >> Engine Electrical >> Description Of Frozen Values, Engine Control Module (B5254T7; 2008-2013) >> Engine Speed (Rpm)
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Engine Speed (Rpm)

The engine control module (ECM) calculates engine speed from the impulse sensor signal.

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