Where is it located? How do I change it? The compressor works and puts out cold air, but blower motor will not work. I understand it's usually the resistor that goes out. Can anyone tell me where to go under the hood? Thanks!
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Check for power to heater motor, if you have power then you will need a new heater motor. The heater motor is located under the dash on the passengers side. You can try tapping on the motor and sometimes it will start up (short term fix). There is also a resistor in behind the heater motor but normally the fan will work on one speed if the resistor is the problem.
There are three fuses involved. A 10amp and 15amp that powers the control, and a 30amp that actually powers the blower motor control processor and the motor itself. Do you have power on all three circuits ?
This sounds like you may have a bad blower motor or a bad blower motor resistor, the most common is the resistor. i will enclose a picture of the resistor, if you look on the pass/side under the dash to the right you will locate the blower motor, a good test to be sure would be to turn on the blower and test for power and ground at the blower,one wire will have power and the other ground, if you have both then the blower is bad but if you only have one of the two then its the resistor, some resistors control the power feed and others the ground feed this is how the speeds are controlled.most newwer cars are ground controlled.the resistor is located near the blower and is bolted to the heaterbox, if you locate the blower and follow the wires from the blower it will lead you to the resistor.hope this helps,