Question about 2005 Jeep Wrangler
I have a 2005 Jeep Wrangler. There is heat blowing from the vents, but the heater fan won't turn on. It started out only working on high, so we ordered the resistor. By the time the resistor arrived, the fan wasn't working at all. We replaced the resistor, fan motor, the control panel, and fuses. Not the cigarette lighters won't work. One was working until yesterday. It's supposed to be below zero next week, and I drive 45 minutes to work. Help!!
May help - fuses supply power but also needed is earth return to battery. This is usually black wires running from device to the car metal. To diagnose you need a multimeter. Check body of cigar lighter is connected to the chasis with meter on ohms. (continuity test) good is zero ohms. If earth problem, check under dash to ensure all earth wires connect to metal chassis. Then with ignition on, check centre pin at back inside cigar lighter has 12 volts to side.
If not then check fuse has 12 volt to it, Now you can get to the fan, repeat all the tests on fan. Best wishes, its tedious work.
Posted on Jan 03, 2014
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Posted on Jan 02, 2017
If you bypass the resistor pack and connect the motor directly to the fused 12v supply then the fan should run at maximum speed. If so, it's the resistor pack that's blown: a very common fault on a huge number of makes and models.
Posted on Feb 13, 2010
Hard to tell exactly from your short post, however, there may be a large retaining nut on the back of the lighter behind the dash panel. Or possible a large clip that retains it. I would check there first.
Posted on May 30, 2009
SOURCE: cigarette lighter doesn't work
before u pull panel, check for 12vdc with voltmeter inside lighter socket. If u have it, then clean contacts and/or replace lighter(not socket, wiring is fine) May save a lot of work. If you don't have voltage are you 100% sure you have right fuse and not the one below, above, or next to it? I still make mistakes with numbered fuses, which number is for which fuse. To make sure I start counting at 1.
Posted on Sep 26, 2009
That or the wiring to it is shorted at some point. Remove the connection at the center back of the socket and replace the fuse--if ok, replace or repair the socket. If still blows fuse, check the wire you removed for damage near any metal object.
Posted on Nov 11, 2009
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