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ENGINE COOLING FAN 1990-92 ENGINE COOLING Ford Motor Co. Engine Cooling Fans DESCRIPTION Power for cooling fan is provided by the 20-amp COOLING fuse (Capri) or C-FAN fuse (Festiva). Cooling fan is activated when ground is Fig. 1 . On all models, when cooling fan is energized, relay contacts are open; when cooling fan is NOT energized, relay contacts are closed, providing ground through closed contacts to activate cooling fan. See Fig. 2 . Cooling fan relay is energized when coolant temperature switch is closed. This occurs when coolant temperature is less than 212°F (100°C) When ECA senses A/C request, it energizes A/C cooling fan relay by providing a ground for relay windings on ECA pin 1Q. Power for the
Fig. 1: Locating Cooling Fan & A/C Relays
Courtesy of FORD MOTOR CO. TROUBLE SHOOTING COOLING FAN DOES NOT OPERATE OR OPERATES ERRATICALLY If cooling fan does not run at any time, or operates erratically, check the following items to help locate fault. Check power fuse. Check cooling fan relay. Check coolant temperature switch. Check cooling fan wiring harness. Check cooling fan motor. Check A/C cooling fan relay. COOLING FAN RUNS CONTINUOUSLY If cooling fan runs continuously, check the following items to help locate fault. Check cooling fan relay. Check coolant temperature switch. Check cooling fan wiring harness. Check cooling fan motor. Check A/C cooling fan relay. |