Expert: Adam Kinion - 7/22/2009

Question
I'M having a problem with the blower motor on my grand Cherokee. I removed the motor and got it to spin using a power probe, i then assumed the resistor was bad so i replaced it. This did not correct the problem. I found that i only have 4 volts to the connector for the blower motor and i seem to have little to no voltage at the connector for the blower resistor. I'm wondering if there is something I'm missing or if there is another connector between the ac control unit and the blower resistor .

Answer
Wayne, dont think you are missing anything between the unit and the resistor, I would say that maybe your control unit is bad, can you get to the wires that go into the control unit to see how much voltage they have going in? If it has way more going in than coming out than thats what I would expect , thanks ADAM