When the fan is not working in Your 2017 Ford Fusion the first thing You should do is check the fuses for it. You will want to make sure that they are in tact and if they are damaged You should replace them with new ones. The next thing to check if the fuses are okay is the wire harness at the fan. Make sure that it is connected tightly and that the connections are free from any frayed wires or debris. If both of those are okay then the most likely problem is that the fan motor has failed and You will need to replace the fan with a new one to get it working properly again.
Annette J.
April 9, 2020
You want to check fuse 35. Then check the relay (position 52). It's the upper right-most relay. Swap it with another one, except the one for the pcm which is relay 57 (bottom row, middle).
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