Constant Control Relay Module (CCRM)
WARNING: This page is about a different car, the 1994 Mercury Grand Marquis, 1994 Lincoln Town Car, 1994 Lincoln Mark VIII, and 1994 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
See CIRCUIT TEST X in TESTS W/CODES - EEC-IV (4.6L) article in the ENGINE PERFORMANCE section.