Caprice V8-265 4.3L VIN W MFI (1995)
A/C Signal: Description and Operation
A/C Refrigerant Pressure Signal
This signal is used by the Powertrain Control Module (PCM) to enable cooling fans when compressor head pressure reaches about 89 psi. If a fault is
present in the A/C refrigerant pressure sensor circuit, a Diagnostic Trouble Code (DTC) 66 and 67 will set, and the A/C clutch would be disabled.
