Rear defroster dont work

[spawn87]

here is my problem my rear windshield defroster dosent work the button lights up and stays lid as it suppose to when i push it... i checked the fuses they are good... and i checked the wires that lead to the ground and power from the back wind shield and i get power on the hot side but on the ground side i get nothing (the power is not making it though the window like its suppose to )... i looked at the window for damage and it all looks good.

any ideas would be helpful thanx.

 

[Boot92]

On the 1g's there are to plugs on each side of the hatch window at the top of the window that connects to the defroster. Check those, likely one or 2 came unplugged.

 

[spawn87]

both clips are connected and undamaged i tested the hot side and it has power but the side that hooks up to the ground has none... so theres no power goin through the window... could it be not enough power?... because the window apears undamaged.

 

[Boot92]

both clips are connected and undamaged i tested the hot side and it has power but the side that hooks up to the ground has none... so theres no power goin through the window... could it be not enough power?... because the window apears undamaged.

try regrounding it.

sand down the current spot its grounded at and remove the paint, or just clean it by sanding it or hitting it with some sort of wire brush. powerd or non.

 

[crusindregs]

If your getting source voltage to the back heating grid the next step is to do a voltage drop on the ground side with the defrost on. you do this by putting one lead of your digital multimeter to a KNOWN good ground and the ground on the connector for the heating grid. If voltage drop is 0 you have an open circuit in the heating grid, the spec for voltage drop on the ground side is less than .5 volts. NOTE if u have some thing like .6 or .7 it does show a slight high resistance on the ground side but it should still work. if you have a high voltage drop on the ground you have found the problem. THE FIX: overlay a new ground for the circuit and BAM it should work let me know how it works out

 

[spawn87]

sorry im a lil retarded when it comes to electrical... so what im ultimately going to do is find another ground point for the ground clip?

 

[Jimmer307]

Has your rear hatch window ever had tint removed? A buddy of mine had his tint "professionally" removed and they scraped the defrost lines with a razor and destroyed his rear defroster. I know this does not offer any solution, but it's an idea as to why it is not working.

 

[jeff24680]

Did you check the 30AMP fuse in the fuse box under the steering wheel?

 

[spawn87]

the fuce is good because i getting power to the back

and as for the tint yes it was once removed but like i mentioned i did not c any damage to the lines.

 

[roostinds]

Are the lines black or or they copper looking. If they are copper looking then there was tint and was remove. I have the same problem. I had my tint removed and there must be a break within the line which would stop the flow of power heating up your glass.

 

[mikej84]

the wiring for the plugs may have gone bad that are hidin in the rear window check it out

 

[inthecease]

try taking a magnifying glass and follow the lines that run through the rear windshield and see if there are any small spaces in the medal because glass is actually a very slow moing liquid and over a period of time it can move and warp things like the defrost coils in the windshield making small cracks that dont allow the electric current to flow any more.

 

[Abe'sGST]

ok im bringing this thread back from the dead..when i first got my car and tried to turn the rear defrost, the light wouldn't even come on, so i looked in the fuse box and the fuse was missing, i put one in there and now the light comes on but it doesn't work...i don't have a service manual yet (getting one soon) so i want to ask is there something else i should look for in particular, like another fuse, relay, etc...thanks

 

[luv2rallye]

Test if you have +12v on the large black-red wire at the rear defrost with it on. And clean the wire connections connecting to the window.

 

[kablamo97spyder]

is the rear windshield tinted? or was it previously tinted? if so someone may have ripped one of the defrost strips and that would definitely cause you to have no defrost

 

[DSM1G90]

just a minute, barely visbile crack in that striping can cause them not to work.