96 ZJ ATC code 40 blows floor only with pics and vid - JeepForum.com
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Unread 07-11-2011, 09:47 PM   #1
jarrod27
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1996  
 
Join Date: Jul 2011
Location: oklahoma city, oklahoma
Posts: 2
96 ZJ ATC code 40 blows floor only with pics and vid

I have a 96 jeep grand Cherokee 4x4 zj limited. It only blows out of the floor I have run diagnostic check on atc and retrieved a code 40. I have also looked at the linkage and it is turning the middle lever when its is turned to the vent position. I do not know if is the door in the air box or the electric motor for the door or the atc panel. I would like to confirm it before I rip the dash out I found this online 40......... circuit was shorted..........................Mode Door Feedback Circuit Historical Fault Codes The book says 40 stands for Feedback was to high.................blower / fan feedback circuit Videos of linkage working is coming.

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Unread 07-12-2011, 05:13 PM   #2
jarrod27
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1996  
 
Join Date: Jul 2011
Location: oklahoma city, oklahoma
Posts: 2
it was the door bottom hinge that was broke

It was the door but could not tell until I had the dash off.
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