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Home >> Chevrolet >> 2003 >> Impala LS >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - 3.8L >> Computerized Engine Controls >> Input Devices >> A/C Temperature Sensor
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A/C Temperature Sensor

Air conditioner high side and low side temperature sensors inform PCM of A/C system temperature levels. Low temperature signal will cause A/C compressor to disengage. High temperature levels help PCM determine control of A/C compressor relative to cooling fans and idle speed.