Question about 2002 Jeep Grand Cherokee

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How can I find the short #20 fuse keeps blowing? Its for my blinkers,blower motor and cruse control.

I checked at the fuse box with a ohm meter but here are a lot of wires that peg out the meter. How can I find the bbad one? I need help bad.

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How can I find the short #20 fuse keeps blowing? I - 25616355-fbkjwkuyeoara0hw4vr2zubt-1-1.jpg

Posted on Mar 29, 2015


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Do you know how to test automotive electrical circuit's , looking at a wiring diagram so you know what all is involved in the blower motor circuit . Using a DVOM - digital volt ohm meter to test the circuit . Free wiring diagram's here Enter vehicle info. year , make , model an engine size . Under system click HVAC ,then under subsystem click on HVAC controls . Click the search button then the blue link .The thing's that could be wrong , blower motor it's self , the blower motor controller for automatic climate control , a blown fuse -but fuse's don't just blow for no reason - short to ground maybe ! 40 amp fuse #1 in the under hood fuse box . Blower motor resistor block if your vehicle has manual climate control .
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so find out why the blower is silent (fuse)
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Here's a cheap, easy way to test my theory:
Try a new fuse, the proper amperage, but leave the blower motor unplugged at the blower itself. That will tell you in a few rides if the blower was the culprit. (Which it most likely is.) I bet your #20 fuse will stop blowing and no more smoking pink wires! Hope this helps. Remember, blower motors are cheap, traffic tickets and dash fires are not. The blower motor draw is the logical thing wrong with this picture. Good LUCK! TT

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