Climate, what climate?

[Jamo]

how different would it be for changing the u.s. spec climate control system? there's not many options to turn multiple things on.

shadowofbob has a guide for the US spec car

[frostyflax17]

thank you sir, i'll look into that.

[johne]

In answer to the question what processor is used inside the CCU, here is a photo of the inside of a 8D0 820 043 H CCU ex Audi A4 made week 18 1996.

The micro-controller is out of the Intel 80C51 series I think and the ROM is a 27C512.

So what you ask? Well replacing the ROM with an appropriately coded EPROM would allow a wide range of controllers to have the correct software to work in an S2. Just the sort of thing Paul likes to play with

John

[S2central.net]

Just let me at it Johne... PM sent

Would be nice to know if there are any sneaky looking jumper pins and such in there...

[johne]

Paul, it's on its way.

John

[S2central.net]

I love it when a plan comes together

[tajgreidotu]

Awesome guide!!

Im lost with connectors......is it possible for anyone post me pictures of them??

I mean:

T5g

T6q

T26a

T5h

T6W

T10e

T10

T2z

I have all harness out of the car, and Im a bit lost about it.

Thanks!!

[veneto rs2]

Hi all and good 2014!

I'm hijaking this thread...

I have a problem with my climatronic:

Starting the car in the morning outside temperature 4 C° (celsius)
Setting the temperature on the Climatronic panel of 22 C°
All goes good and after a couple of minutes it starts to blow nice and hot air
After 15/20 minutes it bolws not freezing air in my feet but not even something that it can be called hot air...
Then for all the journey I must rise the temperature up to 27/28 degrees but if i turn back to anything below that I have cold/poor wrm air coming out from my vents.
Something weird it's that it seems to blow hotter air on the sides dash vents but colder on the central vents.

I checked the diagnostic digital values (outside 4C°) of:

#4 G89 and it's 14.7
#5 G17 and it's 12.6
#6 outside sensor between 6.5/6.00

Any clues guys?

Thanks a lot in advance

Stefano

[rj scotty]

Get vagcom on it.

I stand to be corrected but but the information I have seen regarding the built in diagnostics on the head unit is sketchy at best. I tried to compare the codes on my H suffix controller and nothing matched with the document I had.

Ill see if I can dig the document out for you, you never know

[johne]

Check and clean your cabin temperature sensor, wherever it is, dashboard, crash panel or roof.

Vacuum out any dust or fluf in there and check the fan associated with it is working to draw air over the temperature sensor using smoke from a candle or cigarette.

John

[Tonks4x4]

There is a little more diagnostic info here....

http://www.audiworld.com/tech/int5.shtml

Tonks4x4 - The Land Rover Specialist

[rj scotty]

Thats the one

[veneto rs2]

Thanks guys

I did checked the dash sensor for flow with a cigarette an the fan works.
I will vacuum the grid of the sensor.
Vag com does,nt give any fault regarding the AC system.....
I checked again and if I put air on the dash vents the sides ones are blowing hot air the right more then the left centre one is almost cold.
Could it be some flap blocked or not working properly?

Thanks again
Stefano

[veneto rs2]

Update of the problem.

Heater matrix was obstructed on the lower part.
Kind of weird because the cooling circuit it's clean as crystal and cooling liquid it's just nice and red, also heater matrix (Audi original) was changed in 2009, anyway dash out and new matrix and job done.

Thanks averyone for the advises.

Stefano

[europeanme]

does it matter if your not running an AC compressor to make this work instead of the old heater blower found in the s2?