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How do you troubleshoot a power resistor for a 2004 CRV fan blower motor?
Wiki User
∙ 16y ago
I suppose you mean the blower motor for the inside heat and air conditioning. You will need a voltmeter to perform this test and some understanding of basic electrical circuit function. I cover this test in detail in my upcoming book Automotive Driveablity: A Guide to Engine Performance Testing. Locate the connector to the blower motor. Turn the fan on high speed and measure the voltage at both wires...one should be system voltage (about 12v with the key on, engine off) and one should be near 0v...that one's the ground side, and the one that runs through the resistor pack at lower speeds. With the voltmeter still measuring voltage at the ground wire, move the selector down through the different speeds. Your reading will gradually increase, as voltage drops across each resistor. If at any time the voltage reading equals system voltage, that resistor leg has failed. Hope this helps!
Wiki User
∙ 16y ago
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