Question about 2003 Dodge Sprinter

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Window defroster not running

I have replaced the defrroster motor resistor, but nothing. We have checked all peertinent fuses, all good. No defroster still in Michigan with 20 degree mornings that could be a real problem . Can anyone tell me where to look next

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Locate wires going into the motor, and with a 12vdc test light, probe one wire at a time for power when switch on, low, med, high. If you get power there, it's your motor, or bad ground. Simply use a jumper wire from known good ground and rub or attach it to metal of blower motor, to test for poor ground, with fan switch on. If no power there, I suspect you have a relay in line too, perhaps shows it in owners manual, in fuse box?

Posted on Nov 27, 2008

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