This is such a great sight. Thanks to all the people on here for sharing their knowledge. So now Im hopeing for a little help as well.
I have a 2002 jeep grand cherokee limited. Had my radiator replaced some months ago, and cant recall using my heat since. recently I noticed I was not getting any heat. Blower is working fine, however on heat the A/C seems to remain on. I am pulling the codes 52(recirc door range to large), 54(left temp door travel to large), 56(right temp door travel to large). wondering where to start in order to fix it. I did read on hear in a simaler problem to calibrate HVAC door actuators via DRB3, (how do I do this, do i need to take it to the dealer to do it) and if this should not work then what needs to be replaced, blend door or recirc door? is there a comon problem that would effect all three?
Thanks so much
I have a 2002 jeep grand cherokee limited. Had my radiator replaced some months ago, and cant recall using my heat since. recently I noticed I was not getting any heat. Blower is working fine, however on heat the A/C seems to remain on. I am pulling the codes 52(recirc door range to large), 54(left temp door travel to large), 56(right temp door travel to large). wondering where to start in order to fix it. I did read on hear in a simaler problem to calibrate HVAC door actuators via DRB3, (how do I do this, do i need to take it to the dealer to do it) and if this should not work then what needs to be replaced, blend door or recirc door? is there a comon problem that would effect all three?
Thanks so much
