A blown head gasket can make the fan not come on as well, but we should check the power to the fan to see if it is bad and needs to be replaced.
Here is a guide to help us see if there is power at the fan:
https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
Here are the wiring diagram for the fan so we can see where you are losing power.
Here is a guide that will give you an idea of what you are in for when changing the radiator fan motor out.
Check out the diagrams (below).
Please run this test and get back to us.
Cheers, Ken
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Friday, January 5th, 2018 AT 12:15 PM