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.
I have been looking into it but do not have an answer for you. I rarely get a chance to work on these cars.
Hi
How to check whether the resistor gone bad or not. I have the connector burnt and I replaced it. But resistor shows a value close to 1 ohm(not opened or anything). The problem still exists with new connector replaced.
Is their any value range I should look for the resistor.
Thanks for your help
Hey Sparky,
I have a 2001 Ford Focus ZTS with heating problem. I have to check this resistor. Now comes the silly question. How to remove that resistor. Should I press something? Mine do not budge for anything.
Thanks in advance
Just want to say thank you for posting this. I was able to locate it and replace easily because of it..
Thank you…
The resistor is there to reduce power to the fan motor and therefore functions as part of the lower speed. The a/c will come on without the fan operating but it will cycle off, if the fan does not come on in time to reduce the high side pressure, before it reaches a preset limit.