Welcome to part 2 of this repair on the cooling fan system on a 2003 Ford Focus. To see part 1 please click here.
I consulted the wiring diagrams further and found that there was a fan resistor located in the fan housing. After unplugging the connector this is what I found. One terminal was badly damaged on the harness connector.
The resistor was damaged as well.
I spliced in a new harness connector. The connector part numbers are Ford#4U2Z-14S411-DA Motorcraft# WPT822, The Electric Connection #4071
Installed a new resistor.
Hooked the connector to the resistor.
Retested the system and all is well. My guess is that the resistor and its connector were the original problem and poor test methods by the previous shop had pushed the terminal for the relay out of position.