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Home >> Geo >> 1994 >> Metro Base, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Crank Signal
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Crank Signal

Engine start signal, sent from starter circuit, is used by ECM to determine when engine is cranking. ECM uses crank signal to control fuel pump and injector.