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Discussion Starter #1
so my fans on the rad stopped working.

So far I've swapped out all relays and and checked the fuse, spun fan by hand and boosted it DC . Fan motors ok. Been getting p0480 p0481 fan one and two controls circuit.

Any ideas anyone?
 

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You tested the output side, now you have to test the input side of the relays. Make sure wiring from pcm is good then make sure pcm is providing ground to relays when fans are commanded on.
 

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Discussion Starter #4
Okay. Thank you. I have an idea on how to do this. But just in case. How would I go about doing these tests.?
 
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