Sundance Duster L4-153 2.5L SOHC VIN K TBI (1993)
A/C Signal: Description and Operation
CONDITIONS
A/C or defrost switch ON.
A/C low pressure, high pressure and ambient temperature switches closed.
OPERATION
^
Powertrain Control Module (PCM) 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.
