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Please help me find data on HVAC self diagnosis our cars are equiped with.
I cannot for the life of me find a list, chart, whatever which explains what the different codes for the information from the diagnosis. My car flashed nine times, or as I understand it, HVAC Diagnosis Trouble Code 9. I have searched all over the web, this site, and bought a haynes manuel today and it doesn't tell me ish. PLEASE help me, I really want to fix my AC.


Thanks, Duane

Someone...............................anyone...... .................help

 
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What's wrong with your A/C? There's not a whole lot of info your computer will give you for your A/C. I've done some A/C work on 7th gens and EP3's and all I've used to diagnois the system was a set of guages and/or a volt/amp meter.

If the compressor isn't turning on, there's a good chance you're low on refrigerant (r-134a) which means you have a leak. But there's other things that can cause A/C problems, so elaborate and I'll see if I can help you.

 
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basically, last summer it wasn't cool at all, so I thought it needed recharging. My friend added only like 1/2 a pound or less and the compressor would only turn on sometimes when you turned the fan (ac) on. Now you can't ever hear the compressor come on. I checked the fuses and it seems fine? Please help - D

 
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Sounds like you're low on refrigerant, a ½ lb of r-134a isn't much and if the system doesn't have enough refrigerant the compressor will not turn on or click on and off. The system has a "low pressure switch" that will detect that the system is low on r-134a and keep the compressor from turning on, keeping the comprssor from burning up. You need to take it to someone that has a set of A/C gauges and add the proper amount of r-134a. If it is low on r-134a, you have a leak, and it will keep leaking until the leak is repaired, how long the new refrigerant will last depends on the size of the leak.

 
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Thanks, I should just bring it somewhere, but when the self test was throwing a code, I figured I was half way there.....can't believe nobody has the codes

 
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I really don't know what the codes could really tell you, I'm curious to what the code means also. A/C is pretty easy to diagnois with a set of gauges and knowledge of the system. Let me know if you find out what that code is.

 
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I called a friend who works at a Honda dealer and he isn't familiar w/ the code either? I have no idea but he said they're replacing alot of the "switcheS" on top of the compressor? Or it could be the compressor itself which is a pain in the *** to do I hear. I should've done this last fall or spring, it's my own fault i'm sweating my *** off now!

 
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According to my manual nine light blinks (recirculation indication light) means a problem in the air mix control linkage, door or motor

 
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^you're the man! do you know anything else about the air mix control linkage? That sounds like it'd be expensive and I don't know where to begin or where to have it repaired?

 
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Basically it says test the air control motor by basically giving it direct power to see if it runs.

If that works, you replace the old heater control panel with a new one and see if the problem persists.

If that doesn't work, you have to remove the whole control motor and replace it.

 
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you're talking the in dash climate control panel? Otherwise, the "whole control motor", where is it so I can test it? Thanks, sorry for the newb questions, but this is all new to me - D

 
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If your compressor isn't turning on, I don't see how the air controller could have anything to do with it. ????? I'm really interested to see what your problem is.

 
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EDIT: Duplicate post

 
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^ I'll keep you updated - D