To check the aux fan, just bridge the two wires at the red switch on the drier for the AC system. The drier is located under the hood behind the drivers(US) side head light. Do this with the ignition on. You will here and see the aux fan running in the low speed, if not there is a problem. Don't forget to check the fuse!! It'll get you every time.

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Benzmac:
ASE CERTIFIED MASTER AUTO TECHNICIAN
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