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10-23-2012, 10:16 PM
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Drives: 2007 Yaris Sedan Join Date: Jun 2011
Location: Dover, DE
Posts: 3
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Rear Defroster Issue - Please Help!
So I noticed that my rear defroster grid hasn't been working the last week or so. Today I did some troubleshooting and came up with diddly squat.
I did a visual inspection of the lines, despite being underneath tint, look in good condition. I then checked all the fuses... according to the wiring diagram there is a 30A for the Def itself, then a 10A and a 7.5A as well which were fine. I even swapped out the 30 with a new one incase I couldn't see the fault. I then took a voltmeter and tested the connection beneath the 30A fuse and got 11.7 VDC but when I poked and prodded the connections in the rear I got nothing on the meter. Could it be a wiring issue from the front to the back? Or could this be a relay issue? I hear it click on/off as I toggle the switch. Im not even sure where the relay is...can it be replaced? Im lost please help! 
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