Question about Jeep Grand Cherokee
You need to check the wiring to the blower motor located under the right side of the dash behind the glove box. The most common failure on these is the wiring to the blower motor resistor. It is mounted in the duct near the blower motor. Check for a melted connector. If this is good, use a test light connected across the terminals of the connector that plugs into the motor. As the blower speed is increased at the control knob the test light should get brighter the higher the speed selected. If is does not light the blower motor resistor should be checked for an open. It is does light the blower motor is bad, it should read approx 50-60 ohms when checked with an ogm meter.
Posted on Aug 20, 2008
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