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Home >> Mercury >> 1998 >> Grand Marquis GS >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation 4.6L >> Computerized Engine Controls >> Input Devices >> A/C Pressure Sensor
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A/C Pressure Sensor

The A/C pressure sensor is located in the high pressure (discharge) side of A/C system. A/C pressure sensor provides a voltage signal to the PCM that is proportional to A/C pressure. PCM uses this information for A/C clutch control, fan control and idle speed control.