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Pinpoint Test KF: Fan Control Relays: Introduction

This pinpoint test is intended to diagnose the following:

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

Cooling Fan State 

  PCM Output Low Speed Medium Speed High Speed
Vehicles With 5 Fan Control Relays LFC ON ON ON
  MFC OFF ON ON
  HFC OFF OFF ON
All Others LFC ON N/A ON
  HFC OFF N/A ON
Fig 1: Battery Junction Box-B (BJB-B) Connector
G12083819Courtesy of FORD MOTOR CO.
Pin Circuit
47 GND (Ground)
2, 26 FANPWR (Fan Power)
Fig 2: Battery Junction Box-C (BJB-C) Connector
G12083820Courtesy of FORD MOTOR CO.
Pin Circuit
6 HFC (High Fan Control)
10 LFC (Low Fan Control)
19 CACCF (Charge Air Cooler Cooling Fan)
Fig 3: Battery Junction Box-D (BJB-D) Connector
G12083819Courtesy of FORD MOTOR CO.
Pin Circuit
47 FANPWR (Fan Power)
Fig 4: Charge Air Cooler Cooling Fan Relay Connector
G06054163Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
Ford GT A 5
1
3
2		 FANPWR
CACCF
B+
VPWR
All other vehicles A 5
2
3
1		 FANPWR
CACCF
B+
VPWR
Fig 5: Charge Air Cooler Cooling Fan Motor Connector
G07431586Courtesy of FORD MOTOR CO.
Pin Circuit
2 GND (Ground)
1 FANPWR (Fan Power)
Fig 6: Charge Air Cooler Cooling Fan 2 Motor Connector
G07431586Courtesy of FORD MOTOR CO.
Pin Circuit
2 GND (Ground)
1 FANPWR (Fan Power)
Fig 7: Cooling Fan Motor 1 Connector
G12083829Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
EcoSport,
Fiesta,
Fusion,
KA		 A 1
2		 GND
FANPWR
Ranger B 1
3
2		 GND
FANPWR
FANPWR
All other vehicles A 2
1		 FC
FANPWR
Fig 8: Cooling Fan Motor 2 Connector
G07432367Courtesy of FORD MOTOR CO.
Pin Circuit
2 GND (Ground)
1 FANPWR (Fan Power)
Fig 9: Fan Control 1 (FC1) Relay Connector
G11848503Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
Continental,
EcoSport,
Edge,
Explorer,
Fiesta,
Flex,
KA,
MKT,
MKX		 A 5
2
3
1		 FANPWR
LFC
B+
VPWR
Escape/Kuga,
Focus,
MKC,
Transit		 B 5
2
3
1		 FANPWR
LFC
B+
VPWR
Fusion,
MKZ,
Mustang,
Taurus		 A 5
1
3
2		 FANPWR
LFC
B+
VPWR
Ranger A 3
1
2, 5		 FANPWR
LFC
B+
Fig 10: Fan Control 2 (FC2) Relay Connector
G11848503Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
Continental,
Edge,
Explorer		 A 5
3
4
2
1		 GND
FGC
FANPWR
HFC
VPWR
EcoSport,
Escape/Kuga 1.5L,
Escape/Kuga 2.0L With 3 Fan Relays,
Fiesta		 B 5
2
1		 FANPWR
HFC
VPWR
Escape/Kuga 2.0L With 5 Fan Relays B 4
5
2
1		 FANRSTR1
FANPWR
MFC
VPWR
Flex,
MKC With 3 Fan Relays,
MKT		 B 5
3
4
2
1		 GND
FGC
FANPWR
HFC
VPWR
Focus With 5 Fan Relays B 4
5
2
1, 3		 FANRSTR1
FANPWR
MFC
VPWR
Fusion,
MKZ,
Mustang,
Taurus		 A 5
3
4
1
2		 GND
FGC
FANPWR
HFC
VPWR
MKC With 5 Fan Relays B 4
3
5
2
1		 FANRSTR1
FGC
FANPWR
MFC
VPWR
Ranger A 5
2		 FANPWR
HFC
Transit B 4
3
2
1		 FGC
FANPWR
HFC
VPWR
NOTE: The HFC circuit may be wired to the FC3 and FC5 relays. Refer to the appropriate Wiring Diagrams article for additional information.
Fig 11: Fan Control 3 (FC3) Relay Connector
G11848503Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
Continental,
MKX		 A 5
2
3
1		 FANPWR
HFC
B+
VPWR
Edge,
Mustang		 A 3
1
5
2		 FANPWR
HFC
B+
VPWR
Escape/Kuga 1.5L,
Escape/Kuga 2.0L With 3 Fan Relays,
Focus With 5 Fan Relays,
MKC With 5 Fan Relays		 A 5
3
4
2
1		 GND
FGC
FANPWR
HFC
VPWR
Escape/Kuga 2.0L With 5 Fan Relays A 5
3
4
2
1		 GND
FGC
FANPWR
MFC
VPWR
Explorer,
Flex,
MKC With 3 Fan Relays,
MKT		 B 5
2
3
1		 FANPWR
HFC
B+
VPWR
Fusion A 3
2
5
1		 FANPWR
HFC
B+
VPWR
MKZ A 3
2
5
1		 GND
HFC
B+
VPWR
Taurus A 5
3
4
1
2		 GND
FGC
FANPWR
HFC
VPWR
Transit B 5
3
2
1		 GND
FGC
HFC
VPWR
NOTE: The MFC circuit may be wired to the FC2 and FC4 relays. Refer to the appropriate Wiring Diagrams article for additional information.
Fig 12: Fan Control 4 (FC4) Relay Connector
G06054185Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
Escape/Kuga A 5
4
1
2		 FANPWR
FANRSTR2
VPWR
HFC
Focus 2.3L A 5
4
2
1, 3		 FANPWR
FANRSTR2
MFC
VPWR
MKC A 5
4
2
1		 FANPWR
FANRSTR2
MFC
VPWR
Fig 13: Fan Control 5 (FC5) Relay Connector
G06054185Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
Escape/Kuga A 2
1		 HFC
VPWR
Focus 2.3L A 2
3
1, 5		 HFC
B+
VPWR
MKC A 2
3
1		 HFC
B+
VPWR

Powertrain Control Module (PCM) Connector 

For PCM connector views or reference values, refer to REFERENCE VALUES .

Vehicle Connector Pin Circuit
Continental 3.7L,
Edge 3.5L,
Explorer TiVCT 3.5L,
Explorer 3.7L,
Flex TiVCT 3.5L,
MKT 3.7L,
MKX 3.7L,
Mustang 5.2L,
Taurus TiVCT 3.5L,
Taurus 3.7L,
Transit 3.7L		 198 PIN B10
B17		 HFC
LFC
EcoSport 1.0L Automatic Transmission 198 PIN B4
B23
E19		 HFC
LFC
CACCF
EcoSport 1.0L Manual Transmission 198 PIN B3
B42
B59		 HFC
LFC
CACCF
EcoSport 1.5L Automatic Transmission,
Fusion 2.5L		 198 PIN B67
B66		 HFC
LFC
EcoSport 1.5L Manual Transmission 112 PIN B27
B26		 HFC
LFC
Escape/Kuga 1.5L 198 PIN B7
B32		 HFC
LFC
Escape/Kuga 2.0L With 3 Fan Relays 198 PIN B32
B6		 HFC
LFC
Escape/Kuga 2.0L With 5 Fan Relays 198 PIN B32
B8
B6		 MFC
HFC
LFC
Expedition,
F-150 3.5L,
Navigator		 198 PIN B80
B41
B43		 HFC
LFC
CACCF
F-150 2.7L,
F-150 3.3L,
F-150 5.0L,
Mustang 5.0L		 306 PIN B89
B59		 HFC
LFC
Fiesta 1.0L 198 PIN B3
B42		 HFC
LFC
Fiesta 1.6L 128 PIN B13 LFC
Focus 198 PIN B78
B4
B23		 MFC
HFC
LFC
Ford GT 198 PIN B78 CACCF
KA 128 PIN E31 LFC
MKC 198 PIN B8
B7
B6		 MFC
HFC
LFC
Mustang 2.3L 198 PIN B2
B2		 HFC
LFC
Ranger 128 PIN E29
B13		 HFC
LFC
All other vehicles 198 PIN B4
B23		 HFC
LFC
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