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3 Answers
The fans should come on when the coolant gets above 195 degrees.
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I mean, do all the fans work in the normal mode with only one fan without the air conditioner?
TheSubaruGuruBoston answered 6 years ago
The ECM triggers the fans; as well you "force" them when selecting AC or windshield vent directions. The underhood relays are all interchangeable for testing, but it's rare to have a bad one. Everything sound like it works ok now?