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Old 08-07-2012, 07:08 PM   #1
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Wiring Diagrams

I'm needing several wiring diagrams for my '02 Wrangler. I've looked online and haven't found anything useful. I need wiring diagrams from the fan control switch all the way to the blower motor. Any help would be greatly appreciatied.

The problem I am having is that no air blows out of the vents at any fan speed. According to my brother, this issue arised while I was on my last deployment before returning home. (My brother took care of the Jeep while I was gone) My brother just threw parts at it and now I'm stuck chasing wires. My brother replaced the blower motor, resistor, fan speed switch and fuse. I don't know if there is a relay or not on the Jeep. So I'm wanting a diagram to use for reference before I even start checking where I have power and where I don't. Again, any suggestions or help is greatly appreciated!

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Old 08-07-2012, 07:56 PM   #2
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Here is a link to the wiring you need. Note that on your yr (’02) that the positive (12v) goes fuse, relay & motor. The ground side goes through the resistor, speed switch & mode switch to ground. Start by making sure the motor has 12v (that makes the fuse & relay good) then ground the wire that normally goes to the resistor directly to a good ground to make sure the motor is good. Most of the problems are on the ground side & often when no speeds work the connectors are bad (loose contact at the terminals or heat damage) but the speed &/or mode switch could be bad. Note that the final ground path is through the mode switch so that needs checking as well. (as is the case in this link)



Heat/AC wiring

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Old 08-07-2012, 08:05 PM   #3
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Forgot to add that you can see complete online read only FSMs here

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Old 08-08-2012, 02:04 PM   #4
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Thanks for the info Rubi. This will give me a good start for this weekend.
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