Preludes have a probelm with the Climate Control (CC) circuit boards; after a while the solder will break loose. To fix:

1. Remove the whole radio assembly. Pull off the the tabs of the temp select and fan speed select sliders; it's ok just yank them straight off.
{Console 10 screws; Radio 4 screws}

NOTE: It is easiest to remove the 2 connectors on under the CC now while the CC box is still fastened in place. There is a tab on the bottom of each that you have to hold down as you pull.

2. Remove the climate controls and center vents all as one unit (careful of the temp cable - you have to undo the screw in the end of it.)
IMPORTANT: Remember how the cable clips back into place so that you can hook it up the right way.
{3 screws facing away from you on the bottom front support; 1 screw underneath CC in the middle, 1 screw holding temp select cable}

3. Remove vents from the CC
{2 screws in the back}

4. Remove fan speed selector smaller circuit board from CC box
{3 small screws}

5. Remove lights on top of CC box. All you see of these are the white plastic bottoms. Turn ~1/4 turn and they should fall out.

6. Unclip and pull off the casing from the front of the CC controls.
IMPORTANT: DO NOT REMOVE THE INDIVIDUAL BUTTONS!! YOU WILL BREAK THEM IF YOU TRY! Yes, that's personal experience.
{1 or 2 small screws}

7. You should now be looking at a circuit board. Resolder all of the pins the lead to connectors at where they are soldered to the board. If you are not comfortable with soldering, find someone who is...the solder cannot be touching! "Cliffs" on soldering: (A) Using a soldering iron heat the backside of the pin (couple seconds), be careful not to puch the pins through the board. (B) Apply solder to where the tip of the iron meets the pin - the solder should distribute itself pretty evenly around the solder all ready there. (C) Repeat until all pins are done.

8. Steps 6-1 in reverse.

9. Enjoy your a/c that now works and your fan controls that now actually change where you want them too.


--This took me about 2.5 hours total, but I didn't have any directions to go from. The biggest problem I had was getting the temp select cable to clip back in place. Make sure you try it out a few times before you put averything back in to make sure it works like it should and doesn't slip out if it's clip.

--Also should probably remove the battery cable before you start. I didn't and had to replce the radio fuse so I must of shorted it out somehow.

I believe this is everything. Sorry no pics, maybe if one of you do this you could post some up for the others?

On a side note - put your screws in a container of some sort! lol, I came up a few short when eveything went back together.

 

I also did a write up yesterday. It may help others too.

https://honda-tech.com/zerothread?id=1377562

 

Haha, hey how about that. Good job with the pics! I did mine last week so I really didn't want to tear it all apart again just for the pics. In that last pic, I went ahead and put a new "coat" of solder on all the pins just to cover all options.

 

yeah i did this myself a month or so ago but with a writeup on 92lude.com that didnt have any pics. it probably woulda been alot easier with the pics to go along with it. i also did the extra layer on all the pins to be sure.

 

I did this because none of my fans were changing blow direction, the ac wasnt consistant, nor was the recycle.

Redid all pins perfectly, and the ac and recycle stay on, fan controls still dont do jack.

Any ideas freinds?

 

Well, to rule out the obvious:

1. Did you plug both harnesses back in?
2. Did you resolder all the pins?
3. Are any of the connections touching each other (solder touching 2 pins)?

Other than that, I raelly don't have much experience with the fan stuff - maybe your fan itself is fubar?

 

idk about the fan itself being dead, since it blows plenty well through the face vents.. would just really like feet as an optino, and realllly want defroster