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Home >> Honda >> 1993 >> Prelude VTEC >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Alternator (FR) Signal
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Alternator (FR) Signal

This signals ECM when alternator field circuit is energized. ECM compensates for changes in idle speed and low battery voltage which can cause erratic injector pulse width.

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