Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2002 Lincoln Town Car, 2002 Lincoln Navigator, 2002 Lincoln LS, 2002 Lincoln Continental, and 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.

This system test is for Continental, Cougar, Crown Victoria, Escape, Focus, Grand Marquis, Ranger 2.3L, Sable, Taurus, Town Car and Windstar only. On all models, PCM determines engine cooling fan requirements and controls fan operation through Low Fan Control (LFC), Medium Fan Control (MFC), and High Fan Control (HFC) circuits.

Perform this test only when instructed by QUICK TEST or directed by other test procedures. This test is only intended to diagnose:

Wiring Harness Circuits (B+, FAN PWR & VPWR, IGN START/RUN, LFC, MFC & HFC). See Fig 1-Fig 9
Low Speed Fan Control (LFC), Medium Speed Fan Control (MFC) & High Speed Fan Control (HFC) Relays
Powertrain Control Module (PCM)

Fig 1: Identifying Cooling Fan Circuits (Continental)

Courtesy of FORD MOTOR CO.

Fig 2: Identifying Cooling Fan Circuits (Cougar & Focus With A/C)

Courtesy of FORD MOTOR CO.

Fig 3: Identifying Cooling Fan Circuits (Crown Victoria, Grand Marquis & Town Car)

Courtesy of FORD MOTOR CO.

Fig 4: Identifying Cooling Fan Circuits (Escape 2.0L)

Courtesy of FORD MOTOR CO.

Fig 5: Identifying Cooling Fan Circuits (Escape 3.0L)

Courtesy of FORD MOTOR CO.

Fig 6: Identifying Cooling Fan Circuits (Focus Without A/C)

Courtesy of FORD MOTOR CO.

Fig 7: Identifying Cooling Fan Circuits (Ranger 2.3L)

Courtesy of FORD MOTOR CO.

Fig 8: Identifying Cooling Fan Circuits (Sable & Taurus)

Courtesy of FORD MOTOR CO.

Fig 9: Identifying Cooling Fan Circuits (Windstar)

Courtesy of FORD MOTOR CO.

COOLING FAN RELAY LOCATIONS

Application & Relay

Location

Continental

HFC & LFC

Auxillary Relay Box, Located Under Hood On Core Support

Cougar

HFC & LFC

Battery Junction Box, In Engine Compartment

Crown Victoria & Grand Marquis

HFC

Right Side Of Engine Compartment In Relay Center Box No. 2, Over Wheelwell

LFC

Right Side Of Engine Compartment In Battery Junction Box, Over Wheelwell

Escape

2.0L

HFC, LFC, MFC

Battery Junction Box, In Engine Compartment

3.0L

HFC No. 1 (MAIN FAN) & No. 2 (ADD FAN 2) & LFC

Battery Junction Box, In Engine Compartment

MFC (ADD FAN 3)

Located On Driver's Side Of Fan Shroud

Focus

With A/C

HFC & LFC

Battery Junction Box, In Engine Compartment

Without A/C

⁽¹⁾

Battery Junction Box, In Engine Compartment

Ranger 2.3L

⁽¹⁾

Battery Junction Box, In Engine Compartment

Sable & Taurus

HFC No. 1 & No. 2

Battery Junction Box, In Engine Compartment

LFC (Fan Braking Relay) & MFC

Located In Relay Center Box No. 1 On Left Side Of Engine Compartment

Town Car

HFC & LFC

Relay Center Box, On Left Rear Side Of Engine Compartment

Windstar

HFC & LFC

Battery Junction Box, In Engine Compartment

⁽¹⁾	Equipped with one cooling fan relay.