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Home >> Nissan-Datsun >> 1992 >> Sentra SE-R >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> A/C Switch
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A/C Switch

Informs ECU when A/C system is on. ECU responds by increasing idle speed to improve idling and reduce emissions. During heavy engine load, ECU will also open the A/C clutch relay to disengage A/C clutch.