Pinpoint Test KF: Fan Control Relays: Introduction

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2016 Lincoln Navigator, 2016 Lincoln MKZ, 2016 Lincoln MKX, 2016 Lincoln MKT, and 2016 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.

This pinpoint test is intended to diagnose the following:

CAC fan relay
fan control (FC1, FC2, FC3, FC4, FC5) relays
harness circuits: CACCF, LFC, MFC, HFC and VPWR
PCM (12A650)

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 DESCRIPTION

	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: Identifying Charge Air Cooler Cooling Fan Relay Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
5	FANPWR (Fan Power)
2	CACCF (Charge Air Cooler Cooling Fan)
3	B+ (Battery Positive Voltage)
1	VPWR (Vehicle Power)

Fig 2: Identifying Charge Air Cooler Cooling Fan Motor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	GND (Ground)
1	FANPWR (Fan Power)

Fig 3: Identifying Cooling Fan Motor 1 Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
EcoSport, Fiesta, KA	A	1 2	GND FANPWR
All other vehicles	A	2 1	FC FANPWR

Fig 4: Identifying Cooling Fan Motor 2 Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	GND (Ground)
1	FANPWR (Fan Power)

Fig 5: Identifying Fan Control 1 (FC1) Relay Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Expedition, EcoSport, Edge, F-150, Fiesta, Flex, Fusion, KA, MKT, MKX, MKZ, Navigator	A	5 2 3 1	FANPWR LFC B+ VPWR
Explorer, MKS, Mustang, Taurus	A	5 1 3 2	FANPWR LFC B+ VPWR
Focus 2.3L, MKC, Transit	B	5 2 3 1	FANPWR LFC B+ VPWR

Fig 6: Identifying Fan Control 2 (FC2) Relay Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Explorer, Fusion, MKS, MKZ, Mustang, Taurus	A	5 3 4 1 2	GND FC FANPWR HFC VPWR
EcoSport, Fiesta	B	5 2 1	FANPWR HFC VPWR
Edge, F-150	A	5 3 4 2 1	GND FC FANPWR HFC VPWR
Expedition, Flex, MKC With 3 Fan Relays, MKT, Navigator	B	5 3 4 2 1	GND FC FANPWR HFC VPWR
Focus 2.3L, MKC With 5 Fan Relays	B	4 5 2 1, 3	FANRSTR1 FANPWR MFC VPWR
Transit	B	4 3 2 1	FC FANPWR HFC VPWR

NOTE: The HFC circuit may be wired to the FC3 and FC5 relays. Refer to the Wiring Diagrams article for additional information.

Fig 7: Identifying Fan Control 3 (FC3) Relay Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Expedition, Edge, F-150, MKX, Navigator	A	5 2 3 1	FANPWR HFC B+ VPWR
Explorer, MKS	B	5 1 3 2	FANPWR HFC B+ VPWR
Flex, MKC With 3 Fan Relays, MKT	B	5 2 3 1	FANPWR HFC B+ VPWR
Focus 2.3L, MKC With 5 Fan Relays	A	5 3 4 2 1	GND FC FANPWR HFC VPWR
Fusion, MKZ	A	3 2 5 1	FANPWR HFC B+ VPWR
Mustang	A	3 1 5 2	FANPWR HFC B+ VPWR
Transit	B	5 3 2 1	GND FC HFC VPWR

NOTE: The MFC circuit may be wired to the FC2 and FC4 relays. Refer to the Wiring Diagrams article for additional information.

Fan Control 4 (FC4) Relay Connector

Fig 8: Identifying Fan Control 4 (FC4) Relay Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
5	FANPWR (Fan Power)
4	FANRSTR2 (Fan Resistor 2)
2	MFC (Medium Fan Control)
1, 3	VPWR (Vehicle Power)

Fig 9: Identifying Fan Control 5 (FC5) Relay Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	HFC (High Fan Control)
3	B+ (Battery Positive Voltage)
1, 5	VPWR (Vehicle Power)

Powertrain Control Module (PCM) Connector

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

Vehicle	Connector	Pin	Circuit
EcoSport 2.0L Manual Transmission, EcoSport 1.6L	80 PIN	B41 B16	HFC LFC
EcoSport 2.0L Automatic Transmission	128 PIN	B20 B36	HFC LFC
Edge 3.5L, Explorer TiVCT 3.5L, Explorer 3.7L, F-150 TiVCT 3.5L, F-150 5.0L, Flex TiVCT 3.5L, MKS 3.7L, MKT 3.7L, MKX 3.7L, Mustang 3.7L, Mustang 5.0L, Mustang 5.2L, Taurus TiVCT 3.5L, Taurus 3.7L, Transit 3.7L	198 PIN	B10 B17	HFC LFC
Fiesta 1.6L	128 PIN	B13	LFC
Fiesta 1.0L	198 PIN	B3 B42	HFC LFC
Focus 1.0L	198 PIN	B3	CACCF
Focus 2.3L, MKC	198 PIN	B78 B4 B23	MFC HFC LFC
Fusion 2.5L, MKZ 3.7L	190-PIN	B18 B34	HFC LFC
KA	128 PIN	E31	LFC
All other vehicles	198 PIN	B4 B23	HFC LFC