Cavalier/Z24 L4-138 2.3L DOHC VIN D MFI (1995)
A/C Signal: Description and Operation
DESCRIPTION
This signal tells the Powertrain Control Module (PCM) that the air conditioning selector switch is turned "ON," and that the A/C refrigerant
pressure switch is closed. The PCM uses this to adjust the idle speed before turning "ON" the A/C clutch.
If this signal is not available to the PCM, the A/C compressor will be inoperative.
