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There are two fuses in the system one is in the regular fuse box Fuse number 3, a 7.5 amp
The other is a maxi fuse probably under the hood Fuse number 13, a 30 amp fuse
There are also two relays in the circuit called Aux fan relay stage one, and Aux fan relay stage two
You can do a quick check of this whole circuit by switching on the air conditioning and see if the fans start if they do this part the circuit is OK And the problem is else where like the temp sensor switch or the PCM or it's circuitry