Three Speed Fan Operation

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Although the PCM output circuits are called low, medium, and high fan control (FC), cooling fan operation is controlled by a combination of these outputs.

Refer to ENGINE CONTROL COMPONENTS for system information.

Fig 1: Low Fan Control (LFC) Relay Connector

Courtesy of FORD MOTOR CO.

Fig 2: Medium Fan Control (MFC) Relay Connector

Courtesy of FORD MOTOR CO.

Fig 3: High Fan Control (HFC) Relay Connector

Courtesy of FORD MOTOR CO.

Fig 4: Left Fan Motor Connector

Courtesy of FORD MOTOR CO.

Fig 5: Right Fan Motor Connector

Courtesy of FORD MOTOR CO.

Fig 6: Powertrain Control Module (PCM) Connector

Courtesy of FORD MOTOR CO.