C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Rear Defogger

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Old Jun 8, 2003 | 12:58 AM
  #1  
Jerry D's Avatar
Jerry D
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From: Saugus Ma
Default Rear Defogger

Does anyone know why a rear defogger doesn't clear the window?
The light is on on the control panel. It was working recently.
Is it a fuse?
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Old Jun 8, 2003 | 01:22 AM
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jfb
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From: Cincinnati, Oh USA
Default Re: Rear Defogger (Jerry D)

The rear defogger has a 30 amp circuit breaker. There is 24 amps flowing in the rear defogger and usually it fails due to the slide on terminal/s on the window connection. These terminals get hot and over time the terminal loses its spring tension and makes a poor resistance connection. The next place you have trouble is in the connection through each gas strut. Turn on the defogger and using your voltmeter, check for voltage drop across each gas strut(should be under 0.5 volt) and at the slide on terminals at the window terminal (also, these terminals may be very hot and they aren't supposed to be).


[Modified by jfb, 12:23 AM 6/8/2003]
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Old Jun 8, 2003 | 01:27 AM
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Jerry D
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From: Saugus Ma
Default Re: Rear Defogger (jfb)

Ok Thanks for your help.
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