2002 Jeep Grand Cherokee Limited
4.0 Auto Air

My A/C quit blowing air and I've been trying to find a solution to the problem. I removed the blower motor assembly and connected it directly to the battery and it worked great. I then purchased a new resistor and replaced the old one thinking that had to be the problem. The motor still doesn't work. I then used a pen light tester and found current going to the motor from the resistor but only at half voltage. I then pulled the 3 wires from the input on the resistor and tested each wire. The connector consist of a green-blue-green wires. One green wire had full voltage and the other green wire had nothing. Can anyone assist with this issue before I bring it into the dealer? I checked the fuse under the hood and even replaced it think it could possibly be bad without seeing anything. Is there a switch, replay, or something I'm missing?

Thanks in advance!

 

Did you check the fuses inside of the car?

 

I checked the inside and they all looked good. Is there a specific number fuse I should focus on?

 

Fuse 21 and fuse 36 under the hood

 

Both fuses are good. I'm beginning to think that the fan speed **** on the climate control module could be bad. The power to the resistor doesn't vary when I turn the **** and it seems the blower is not getting enough power to run.

 

I had this problem, fuse looked good but I replaced it anyway and worked fine.

 

I bought a new resistor for the car and can't seem to find where it is located. Everyone says it is under the glove box but I don't see it anywhere. I have a 2002 jeep grand cherokee.Please help me!

 

It's mounted right next to the blower motor with 2 phillips head screws. the big white ceramic part is inside the air box.

IDK the color codes, but the way the resistor works is your fan speed switch sends power to 4 wires, 3 of which go thru different steps of the resistor, then to the blower motor. The 4th wire goes to a relay (for High), then to the motor. The fan speed switch only gets power when the directional (mode) switch is on.

Having said that, all this info is about the manual heat/AC unit. IDK about the auto climate control.