View Single Post
Old 04-15-2009, 11:08 PM   #2
DirtyLarry
Windy Corner of a Dirty Street
 
DirtyLarry's Avatar
 
Join Date: Jun 2003
Location: Pueblo West, Colorado
Posts: 2,926
Re: How to test heated mirror ?

The service manual is less than sterling with testing the heated mirrors. It mentions checking the heating element supply voltage circuit (which would be infinite resistance on a DVOM) for a short to ground but that is about it.

It does say to verify if the rear defrost is working (system check) first then check the HTD MIR fuse, then check for poor connections if no fault is found with the previous (if the power movement function is working then the connection issue would be unlikely).

Outside of that, you may have to wait until old man winter returns again to test it. I have not heard of these failing often but did notice they change colors when the defrost is on. Does your mirror turn a greenish color when you turn on the rear defroster?
DirtyLarry is offline   Reply With Quote