27-07-2015, 07:19 PM
found this on a ford site,
There are 2 relays both passing through fuse number 4 in the engine bay fuse box. 40 amp.
The fan is switched on by the engine control module from the signal sent by the coolant temperature SENSOR (CTS). Unless the ECM gets the correct reading then the fan will not be switched on. So plug it in to a diagnostic tool and see what reading the ECM is seeing. The tool should also be able to run the fan at slow and fast speed to check both relays and the circuits.
There are 2 relays both passing through fuse number 4 in the engine bay fuse box. 40 amp.
The fan is switched on by the engine control module from the signal sent by the coolant temperature SENSOR (CTS). Unless the ECM gets the correct reading then the fan will not be switched on. So plug it in to a diagnostic tool and see what reading the ECM is seeing. The tool should also be able to run the fan at slow and fast speed to check both relays and the circuits.