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how do you know if a fan relay is bad?

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Old Aug 11, 2007 | 10:46 AM
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From: Caldwell NJ
how do you know if a fan relay is bad?
Well how do you?

Im not sure if thats my problem but want to make sure.

The problem is that only one fan comes on.
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Old Aug 11, 2007 | 11:17 AM
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The FD fans work in unison, not separately. It's far more likely that the fan motor has burned out or the wiring leading to it has a ground fault somewhere.
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Old Aug 11, 2007 | 12:10 PM
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I agree with Kento. Just fixed one myself.
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Old Aug 11, 2007 | 12:15 PM
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you can apply voltage (12v) to terminals A and B of the relay and then apply an ohmeter to C and D and verify that is 0. When you apply the voltage, you should here a click.

Trev
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Old Aug 11, 2007 | 12:28 PM
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From: Caldwell NJ
thanks for the help. I got new/used fans just thought there might be a quick fix so I could drive my car sooner.
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