![]() ![]() Here’s how to test a blower motor with a multimeter (electrouniversity) Blower Motor Resistor Blower motor resistors come in many shapes and sizesĭepending on how your particular model year of Grand Cherokee’s blower motor resistor question, it will still be able to turn on the blower motor when you turn the speed all the way up. If air starts blowing at full blast, suspect the blower motor resistor. If all the dash lights are on, the climate control system looks like it should be working, and no air moves, you should suspect the blower motor.īefore replacing it, turn the fan up to its highest setting. Bad Blower Motor (Most Likely)īlower motors are known to fail without warning. ![]() If you don’t hear any noise coming from the blower motor, the air conditioner not working check these two items. ![]() However, there are a few less common reasons as well. When there’s no air flowing through the vehicle’s cabin, a bad blower motor usually causes this scenario. If your Jeep Grand Cherokee has no air moving through the climate system at all, that’s a lot easier to diagnose than the air that is blowing not being cool enough. AC Blowing No Air at All Usually the culprit There are just too many variables otherwise.ġ.
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