Dynasty L4-153 2.5L SOHC VIN K TBI (1992)
A/C Signal: Description and Operation
Conditions
A/C or defrost switch is turned ON.
A/C low pressure, high pressure and electronic cycling switches are closed.
Operation
^ The Control Module receives an A/C selected signal.
^ PCM then engages A/C compressor clutch (by grounding clutch relay).
^ PCM maintains correct engine idle speed, through the Idle Air Control (IAC) Motor.
^ PCM monitors status of switches and cycles compressor clutch accordingly.
