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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 318 (Engine Controls - Pinpoint Test JC: Secondary Ignition (Coil Pack) Through Pinpoint Test Z: Intermittent - (Except Diesel & Hybrid)) >> Pinpoint Test KF: Fan Control Relays >> Introduction >> Two Speed Fan Operation

Two Speed Fan Operation

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

Refer to ENGINE CONTROL COMPONENTS .

Fig 1: Identifying Low Speed Cooling Fan Motor Connector
G08291544Courtesy of FORD MOTOR CO.
Fig 2: Identifying High Speed Cooling Fan Motor Connector
G08291545Courtesy of FORD MOTOR CO.
Fig 3: Identifying Low Fan Control (LFC) Relay Connector
G08291546Courtesy of FORD MOTOR CO.
Fig 4: Identifying High Fan Control (HFC) Relay Connector
G08291547Courtesy of FORD MOTOR CO.
NOTE: The HFC circuit may be wired to the FC and HFC relays. Refer to the Wiring Diagrams article for additional information.

Fan Control (FC) Relay Connector 

Fig 5: Identifying Fan Control (FC) Relay Connector
G08291548Courtesy of FORD MOTOR CO.
NOTE: The HFC circuit may be wired to the FC and HFC relays. Refer to the Wiring Diagrams article for additional information.