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Home >> Geo >> 1990 >> Tracker Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> A/C Signal
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A/C Signal

On models with A/C, a signal from the A/C control module is sent to ECM when air conditioner is operating. The ECM uses this signal with other inputs to determine idle speed.

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