Finding breaks in defroster grid lines

Kestas

Staff member
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13,983
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The Motor City
I have four grid lines that don't work on the back window defroster of my 2001 Sable. I shined a light from the other side and couldn't visually find the break. I then tried using a voltmeter with the unit energized, and an ohmmeter with it off, but that didn't work either. What is the proper way to diagnose bad grid lines?
 
Messages
2,564
Location
Suffolk County, NY
i used a voltmeter dragging it from left to right, or right to left, i forget... and found it. i'm surprised you didn't. to be honest, what helped me alot was the how to video on youtube, and the instructions with the repair kit bought at the store (paste with the stencil)
 

Kestas

Staff member
Thread starter
Messages
13,983
Location
The Motor City
Found it! The breaks were all way over to one side. The gridlines still did not have visible breaks - they just got thinner (more opaque) in that area. Yes, the voltmeter did its job.
 
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