Section 2 (HVAC System): Description
WARNING: This page is about a different car, the 1998 Mercury Tracer. However, it is still accessible from the selected car via links, so may be relevant.
System is a cycling clutch type with a fixed orifice tube. Compressor clutch control system components include A/C cycling switch, A/C pressure cutoff switch, A/C Pressure Transducer (ACPT), Constant Control Relay Module (CCRM), and Powertrain Control Module (PCM). See Fig 1.