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Starting at your second post first.......well done on getting the system working on the bench, krnau did the same thing and I was really impressed when he'd done it too, I just threw everything into the car first and then figured out the wiring after......I believe your way is possibly better!!! As I see it the 12V from F129 pin 3 simply goes to three systems to inform that stage 2 fan is running, fan controller, CC and ECU. The A/C is not shut off until fan stage 3 is called for through pins 1 and 2 of F129. Looking at sheet 71/8 there's a signal from CC at line 89 (originates from line 41 of drg) which goes to F129 pin 2 on a blue/green, if F129 is healthy i.e. >2bar & I have a list which suggests those names for ECU pins 37 & 39, we're probably looking at the same list....I'm not sure if that's exactly right looking at the wiring as there seems to be a bit more to it than that. Even if you look right back to the Diavia system there are are two signals to ECU from A/C, I never really gave it any thought as to why there weren't any in a standard stage 2 set up. Certainly A/C on will need to kick the revs slightly, maybe A/C on and stage 2 fan needs some more??? I seem to remember that the wiring to the ECU is already there in the car......there should be a yellow 2 pin plug on green and blue wires above the relay plate/fuse box. I could have a look in mine if I really needed to but I'd prefer not to pull the wiring out again as it's horrible up there! The yellow plug in the centre of this photo from my OBD2 loom is T2n which is the ECU plug you're looking for in the mass of spare wires Corrados seem to come with (ignore the loose wires on the right). The black one below it is T5c which carries the majority of the CC controller to fan controller signals in mine at least.

Looking at the Passat drawings (set 71 pages 6 to 8 ) and the layout diagram in the manual (which unfortunately features a stage 2 relay rather than a fan controller and you therefore have to guess a bit!) Fan controller pin 10/2 is the >15bar start fan stage 2 signal. 12V comes from 10A fuse S13 at relay plate pin A1/7 to distribution point L47 and then by black/white wire to F129 pin 4....the other side of the contact (F129 pin 3) connects via blue wires to Fan Controller J293 pin 10/2, CC controller J255 pin 28A/2 and ECU pin 68/39. The second contact in pressure switch F129 is the system permissive signal which confirms pressure is >2bar and The two contacts to the ECU are (on mine at least) a green or maybe green/white wire which is CC enabled and a blue wire which is fan stage 2 activated (above). Fan run on is not exactly the same as stage 1 is it as the auxiliary water pump also has to run in that situation?

Although Jay's was rather different in that he didn't overlay a Golf loom onto a Corrado loom.....he just squeezed a Golf into a Corrado!!!!! Maybe just wasn't the right word to use there?????

So here are some drawings and things to, I hope, help with you climatronic installation! These were collected together by krnau and myself while doing our installs. The Passat wiring diagrams are what I used both times doing mine, first with the original Corrado loom and then second time alongside the OBD2 write up by C488ADO when I installed my Golf loom. Next is a Climatronic Manual which is useful as it has a write up plus descriptions of how everything works and a wiring diagram of the complete system laid out. You mentioned that you were getting a Mk4 Golf loom so the diagram for 2001 Golf might come in handy, I never used that one myself as it didn't match my system! Another Golf set this time from 1998. And lastly there's a set of photos krnau sent me which I believe he received from the German guy who sold him his parts, they're for an LHD car but could come in handy. I've got a few more sets of wiring diagrams but they're in German so get a bit confusing.....to me at least! Hopefully these will go you something to get started on anyway!!! passat climatronic wiring diags.pdf climatronic-manual-eng.pdf climatronic wiring-Golf from May 01.pdf 2.8l 24v Climatronic system.pdf alemany.pdf

I just replied to your PM and then I've had a read through your thread again....there's probably some of those questions above that I can answer, and maybe even more I can make you ask!!! I don't have the right PC with me at the moment with my climate file on it, I do have loads of diags from different models so hopefully we can sort out what goes where. You're right about the A/C relays though and as you say, the climate controller and fan controller run everything between them, there's only one other relay in mine and that's above the relay plate/fuse box and it's a simple system ON/OFF one. I'll get back to you with loads of wiring diags!!!

Take the M3 at the crazy low price...........................and then sell it for a profit, simple!!!

Looking good, not so sure I want to sell them now!!! Good to meet you this morning, glad you're happy with the wheels. Your car looks stunning, I'd better be getting on with mine now!

I took mine out a few weeks ago when I swapped the loom for OBD2 and yes the engine was in the car. Inlet manifold etc was removed but I'm not sure any of that makes a deal of difference, it's a pig of a job but it does come past the suspension turret with a bit of wiggling! Strangely enough it dropped back in without any trouble whatsoever, I then took it out and put it back in again as the loom wasn't quite where it needed to be and both times were a doddle???

I've got some in me shed, they were chrome ones but are now painted, not perfectly I must admit, in black. They have lamin-x clear film fitted and I can throw in the loom I made which keeps the dip beam on when mains are used too. I'm out of the country until next week but let me know if you're interested. I've got some in pro all red rears with the black rather than chrome bodies too that will be for sale if you might be looking for those?

Thanks to C488ADO for a great write up on swapping to OBD2. I’ve had the parts in my shed more than three years and the last couple of weeks finally got around to fitting everything! Your description was a great help especially all the photos, every time I try to do the same I get to the end and remember that I’d forgotten to take half the ones I should have! My swap was however slightly different and in answer to Rams, yes if you’re really determined you can leave the AC wiring in there if you’re prepared to use original VW rather than the Diavia system. A few years ago I installed Climatronic from a 96 Passat VR6 into mine which meant I had all the Corrado wiring plus a fair amount of a Passat loom under the bonnet too, the OBD2 Golf loom let me tidy a lot of that up. Here’s my finished OBD2 loom after I’d pulled out all the unnecessary lighting circuits etc but before I started wrapping it ready to go back in the car. These are the plugs for V7 the radiator fan motor and F18 the radiator two way temperature switch. These are both standard Corrado but part of the Corrado fan loom normally. The bundle at the top of this photo are all standard Corrado, the other two however are extra, the brown one is for F163/F165 which connects to a third (brown) two way temperature switch I have in the thermostat housing alongside the usual blue and yellow ones. The black one connects to N25 the AC compressor magnetic clutch. These two are again standard in a Corrado, both connect to J293 the fan controller, T4 the large plug is I believe pretty common although the smaller plug T10 is only used if you’re lucky enough to have the later fan controller. I say lucky enough as a lot of the Climatronic sensors are connected through this controller which also switches the compressor clutch. My car is a late May 95 build so pretty near the end of the production run, no idea when these were introduced as standard. The Corrado normally only uses six of the ten pins in this plug, for my original Passat loom add on I had to add an additional four pins and tag on some more wiring, this tidies it up no end. The white plug here goes to G62, a temperature sensor in the coolant line to the matrix. Not all Climatronic would appear to have this as I seem to remember that when krnau was doing his install he didn’t use one, of course he has a LHD 16V which originally had factory AC so we had loads of fun figuring his swap to Cliatronic! The black plug connects to F129 which is the two way AC coolant pressure switch. And finally these are the Climatronic wires which connect into the controller, the large black plug on the right hand side is where the majority of them came from but they now connect to the smaller five pin black plug T5c and then there’s the smaller 2 pin T2n which connects to the ECU. The single red wire is the only thing from the cooling fan wiring which goes back to the fuse box for fan speed 1. I’ve still got a long way to go before I think about putting the car back on the road as there are loads of other jobs I want to get done such as full leather retrim, respray, suspension rebuild (we’ve owned this one almost eleven years so it’s a keeper) but this morning it fired up first button about two weeks after I originally started the OBD2 swap. The Climatronic worked straight away and the only fault code I couldn’t clear looks like I have a failed Lambda probe so on the whole I reckon that was something of a result, it's certainly far neater since I removed three looms and replaced them all with one!

Just found this thread and saw my name still gets mentioned when there's talk of climatronic! Good luck with the install, it's not too bad really and the pain is worth it ten times over once you've finished. I'm just doing mine for a second time as I'm going OBD2, in some ways it's looking like it'll be a better job because the new loom I'm fitting (which has been sat in the shed for over three years!) has got a lot of climatronic stuff in it already. While I'm at it I'll be looking for a new condensor too as the Passat one I used last time is huge and meant hacking loads of the front panel out, something out of a later model will be going in there. Have fun!!!

Few years ago I bought my wife an S3, it was an early facelift model with Revo remap making about 260bhp. I liked it but she was not so impressed. climatronic wiring-Golf from May 01.pdfS3.JPG[/attachment:2f4i5wag] So we replaced it with an R32. Deep Blue Pearl 3 door, the best there is! Anyway she loved that car, raved about it over the S3, drove it for a couple of years and was very reluctant to sell it. 2.8l 24v Climatronic system.pdfR32.JPG[/attachment:2f4i5wag] And so that is now replaced with a Mk 2 3.2 TT. Very nice refined car, similar to drive to the R32 but slightly better spec, also better build quality but obviously that's reflected in the price! TT.JPG[/attachment:2f4i5wag] She'd still drive the Corrado over all of them but we keep that for nice days only.........but in answer to your question, I'd go for the R32 every time.....and they're not too much money these days for a lot of car.

I just took the cover off mine and started it for the first time since October 2008! Started first time, not a problem :clap: :clap: :clap: Drove it forward and backward about a foot just to unseize the brakes, got everything warm and then put it back to sleep :sleeping:

I'm with Leonard, that would be a pretty special motor in my eyes too, why don't they make one??? I'm just trying to swap my wife's Mk4 R32 for something newer. First I suggested an RS4 but she thinks they look too plain, too much like an A4. Then we started looking at the 996 Carrera 4S but "it's simply not practical enough" with limited seating and shopping space. So now we're looking for a Mk5 R32 but it must be deep blue pearl, 3 door, manual and with hard backed recaros........there's of course one of those on every street corner....not! Why are there so few interesting cars to choose from???

You can buy Schrick bits from Vince at Stealth, I bought a complete set of gaskets for mine plus a new actuator a few years ago. No idea how much the bits were though but be warned, they're not cheap! I'm on the look out for a new inlet elbow for mine when I finally get around to bolting on the OBD II bits and was quoted around £450 for it over two years ago :shock:

10 years and 8 MOTs.......sat on axle stands in the garage the last 2 years while I work in Saudi. Used as a daily before that, 70+ thousand miles. The only MOT work was replacing hard brake lines on the rear in 2007.........no complaints!

Blue Storm snapped in Stratford on Friday by a mate of mine......anyone here?

I had my young daughter in the passenger seat, she's 19 now, when I opened the door to get her out and nearly lost it! There was a guy with a nugget G60 took his right up to the top of the banking too.......I wasn't having any of that :shock:

I think KIP means 2011 as this year (2010) it's going to be oop north. Hopefully another loft visit this weekend may uncover some more gems. I was at Brooklands in 1996 with the 1.8v Ink Blue and I think those photos were taken in front of the main(?) Brooklands building. There were some taken on the banking too. It rained while we were driving the cars up and it was slippery as.........can't imagine how they used to race around it! I've got photos and all the early Sprinters at home but unfortunately I'm 5,000 miles away until Easter or I'd dig them out.

You heard the petrol is like washing powder story too :sleeping: Maybe he used it at the AGM one year, I was there a couple of times.

I was trying to find mine on the picture but then realised there are too many Corrados in it.......I was there with G43 KUH in 96 with maybe 10 or so others if you find anything.......Jeremy Bromley's motor was dead in the car park and left on a transporter IIRC! I've got some photos at home somewhere but I'll not be there until after Easter to look for them. I was also at the first meeting at Gaydon but don't remember taking any photos.

Following on from our many PMs about this! The biggest problem you have trying to get info on here is that we didn't get factory fitted a/c in Britain so it's highly unlikely you're going to find somebody with this option in a Corrado, as A1 VR6 says our Diavia systems were installed by the dealers before delivery of the cars and were operated by two push buttons. You'd be more likely to get help regarding the slider controls from people that have Golfs, Jettas, Passats etc of a similar age but with factory fit a/c. The first stage of the fan should be activated by the start of the air con/climatronic (if you install it) or the first stage of coolant temperature switch F18, the second stage should be switched by the second stage of F18. There should be no need to install a later VR6 fan controller as it would only overcomplicate things. From what you described earlier you already have a problem with the operation of the fan, get to the bottom of that first before starting on the next problem.....it sounds like it may be a relay issue???

I have a 95 N ONH....what do I win?

They go over the fan inlet under the left side of the scuttle......keep the inside of your screen so much cleaner too.

KADVR6 had one for sale a few weeks back, thought about buying myself but decided not to in the end.....don't know if he's still got it but no mention in the thread that it has sold. http://the-corrado.net/.archive/forum/viewtopic.php?f=13&t=81396