A/C Switch

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NOTE: On Concorde, Intrepid, LHS and 300M Automatic Temperature Control (ATC) models, the A/C switch is incorporated in the automatic temperature control head.

Switch signals PCM that A/C has been selected. PCM then activates A/C compressor clutch relay and maintains idle speed at a preprogrammed RPM. This is done through control of Idle Air Control (IAC) motor.