P0480: Low Fan Control (LFC)/Fan Control 1 (FC1) Primary Circuit Malfunction (Relay Controlled Electric Cooling Fan)

WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

P0480 - LOW FAN CONTROL (LFC)/FAN CONTROL 1 (FC1) PRIMARY CIRCUIT MALFUNCTION (RELAY CONTROLLED ELECTRIC COOLING FAN)

Description:	Monitors the low fan control (LFC) or fan control (FC) for one speed fan application, primary circuit output from the PCM. The test fails if: When the PCM grounds the LFC/FC circuit, excessive current draw is detected on the LFC/FC circuit; or with the LFC/FC circuit not grounded by the PCM, voltage is not detected on the LFC/FC circuit (the PCM expects to detect VPWR voltage coming through the low speed FC relay coil to the LFC/FC circuit).
Possible Causes:	Open or shorted LFC/FC circuit. Open VPWR circuit to the low speed FC relay. Damaged low speed FC relay (or CCRM). PCM damaged.
Diagnostic Aids:	When the LFCF PID reads YES, a fault is currently present. During the KOEO and KOER self-test, the LFC/FC circuit is cycled on and off. A short to power can only be detected when the PCM is grounding the LFC/FC circuit. During the KOEO and KOER self-test, the LFC/FC circuit is cycled on and off.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
Crown Victoria, Grand Marquis, Town Car	GO to PINPOINT TEST KN: VARIABLE SPEED ELECTRIC COOLING FAN Step 1.	GO to PINPOINT TEST KN: VARIABLE SPEED ELECTRIC COOLING FAN Step 1.	GO to PINPOINT TEST KN: VARIABLE SPEED ELECTRIC COOLING FAN Step 7.
LS, Thunderbird	GO to PINPOINT TEST KN: VARIABLE SPEED ELECTRIC COOLING FAN Step 12.	GO to PINPOINT TEST KN: VARIABLE SPEED ELECTRIC COOLING FAN Step 12.	GO to PINPOINT TEST KN: VARIABLE SPEED ELECTRIC COOLING FAN Step 19.
Mustang	GO to PINPOINT TEST X: CONSTANT CONTROL RELAY MODULE (CCRM) Step 11.	GO to PINPOINT TEST X: CONSTANT CONTROL RELAY MODULE (CCRM) Step 11.	GO to PINPOINT TEST X: CONSTANT CONTROL RELAY MODULE (CCRM) Step 17.
Freestar/Monterey	GO to PINPOINT TEST KF: FAN CONTROL RELAYS Step 16.	GO to PINPOINT TEST KF: FAN CONTROL RELAYS Step 16.	GO to PINPOINT TEST KF: FAN CONTROL RELAYS Step 49.
All others	GO to PINPOINT TEST KF: FAN CONTROL RELAYS Step 1.	GO to PINPOINT TEST KF: FAN CONTROL RELAYS Step 1.	GO to PINPOINT TEST KF: FAN CONTROL RELAYS Step 43.