Grand Caravan AWD V6-201 3.3L (1992)
A/C Signal: Description and Operation
Purpose
The Control Module monitors engine load and A/C system pressure, and cycles the A/C compressor clutch accordingly.
Conditions
A/C or Defrost switch ON.
A/C low pressure and high pressure switches are closed.
Operation
Control Module:
^ Receives an A/C selected input signal.
^ Engages A/C compressor clutch (by grounding clutch relay).
^ Maintains correct engine idle speed, through the Idle Air Control (IAC) Motor.
^ Monitors status of switches and cycles compressor clutch accordingly.
