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I have a 2002 pontiac sunfire 2.0 liter engine and my ...

Sent to Car Experts December 5 2006 at 2:33 AM
   

I have a 2002 pontiac sunfire 2.0 liter engine and my rear defogger all of a sudden no longer is working. what could be causing this to happen?

 

Optional Information:
2002 Pontiac sunfire 2.2

Already Tried:
changed the fuse

Customer (name blocked for privacy)
Status:  Closed   Value: $10
Answer
December 5 2006 at 2:57 AM (23 minutes and 34 seconds later)
         
ACCEPTEDCheck Mark

Good Morning

You will have to check for current at the back window. The voltage travels through the grid (lines) on the back window. Use a test light and check for current where the wires connect on either side of the grid. If we're not getting current to the rear window and the fuse is good, check for current in and out of the switch. If the switch is NOT getting current I believe there is a "relay" in the system. You can contact your local Auto Store, Advanced Auto or Auto Zone and ask where the relay is located, they will have the info for you. Electrical troubleshooting takes time and patience and these are the most likely places where you'll find the problem. You also want to make sure all the connections are tight at the back window, switch or any other related components.

Good Luck!

Dan



Edited by Dan on December 5 2006 at 2:58 AM

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