Radiator fan not working

My radiator fan is not turning on. I tested the motor and it works, I tried replacing the resistor which didn't make a difference. I swapped out the condenser fan relay (which is working) for my radiator fan relay, this made no difference. I should mention I was using a data logger to test the fans so I think that pretty much rules out the temp sensor being the culprit. However, when I run the test I can hear the relay for the fan click on, and then once the test finishes it clicks off.

If anyone has any ideas please help. The only thing that I can think of is the wiring harness to the fan being corroded at some point after the relay. Thanks for the help.

Test for continuity to see if power is getting thru the plug in. It is plugged in isnt it?

Test for continuity to see if power is getting thru the plug in. It is plugged in isnt it?

It is plugged in. I will try testing to see if I'm getting any current.

if you get low current check for resistance, you might have a broken wire somewhere...which would suck to track down