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Home >> Ford >> 2021 >> Bronco Sport Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 946 (Engine Cooling - 5.0L 32V Ti-VCT (359KW/486PS) (WU)/5.0L Ti-VCT V8 (343KW/466PS) (MF)) >> Description And Operation >> Engine Cooling - System Operation and Component Description >> Component Description >> Cooling Fan >> Relay Control Fans

Relay Control Fans

WARNING: This page is about a different car, the 2021 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

The PCM controls the fan operation through the fan control LFC (single speed applications), and LFC (low speed), MFC (medium speed), HFC (high speed) for multiple speed applications. Some applications have the xFC circuit wired to 2 separate relays.

Although the PCM output circuits are called LFC, MFC, and HFC, cooling fan speed is controlled by a combination of these outputs.

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