A/C Cycle Switch (ACCS)
WARNING: This page is about a different car, the 1995 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
The ACCS is a voltage input to the PCM which indicates when A/C is requested. When A/C demand switch is turned on, the cyclic pressure switch and the high pressure contacts of the dual function A/C Pressure Switch (ACPSW) are closed and voltage is supplied to the ACCS circuit signal at the PCM. See CCRM circuit schematic in CIRCUIT TEST X in appropriate TESTS W/CODES - EEC-V article in the ENGINE PERFORMANCE section for more information.