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Home >> Ford >> 1993 >> Festiva L >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Electrical Load Switches
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Electrical Load Switches

Blower control, cooling fan, rear window defroster, air conditioning, and headlight switches all send signals to the PCM. The PCM uses these signals for idle speed control.

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