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1999 Volkswagen Jetta Question: What is this?



ddidier420, 4 Cylinder, Morristown, TN, May 12, 2009, 18:41

I have an old body style 1999. What is the electrical box under the coolant expansion tank?

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  • Answer #1

    spyder May 14, 2009, 16:07

    It is the Fan Control Module. I believe it is designated J93 in the wiring diagram.

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