Riviera V6-38L SC VIN 1 (1995) A/C Signal Description and Operation
A/C Signal: Description and Operation
This signal informs the Powertrain Control Module (PCM) when an A/C mode is selected, and the A/C pressure cycling 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.
