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Home >> Chevrolet >> 2000 >> Prizm LSi, Automatic, A131L/MB3 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> A/C Idle-Up Signal
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A/C Idle-Up Signal

When A/C compressor is engaged, a signal is sent from A/C amplifier to PCM. PCM uses this signal with other inputs to determine engine idle speed and fuel mixture.

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