what controls the cooling fan on a 07 crown vic

Check the fan relay,under hood in fuse box,if it is good check the fan sensor.

http://www.cargurus.com/Cars/Discussion-t29372_ds554767 ..quote: Damn! There is NO temperature sending unit on this car that operates the fan!!! There is a Cylinder Head Temperature Sensor on each head that the COMPUTER uses to determine when to cool the engine. The computer controls the fan EXCLUSIVELY! I work on a fleet of 800 Ford Crown Victoria Police Interceptors: 2002 to 2013 - same car - different decals - we have cooling fans fail regularly. THE COMPUTER CONTROLS THE FAN BASED ON CYLINDER HEAD TEMPERATURE AND AC DEMAND. NO THERMOSTATS - NO SWITCHES - JUST THE PCM. ......(Tracy Hooks)

So I wonder what the 6th one from bottom on left is? #102 says cooling fan relay

I just fixed mine by swapping the fan relay (102, thank you FordNut) with the one for the police light bar (109).

On the fan housing itself is a fan control module. Its hardwired hot with a 3rd "signal" wire that determines on/off/speed. Usually the problem lies here.

HI 2003 FORD GRAN VICTORIA ,,FAN NOY WORK..CHANE FAN MODULE FORD PART AND THE 2 SENSORS TENPERATURE COOLER SENSOR OLSO TENPERATURE COLDER SWICH AT THE HEAD ,,,, SEND SIGNAL WIRE TO PCN .TRAKING THE WIRES FRON POINT A TO B ,IS CORRECT....THE FAN NOY RUNING ALSO AT PUT THE AC NOT RUNING...TX FOR YOUR HELP

My question is it the fan need to run with the a/c off?