I've been very stupid it seems !!!

[jb0o]

would the engine ECU still allow the coding if it wasn't detecting it?

Yes it does.

 

[NHN]

Assume you tested the stalk functions with measuring blocks?

 

[NHN]

the ecu is locked out so you may need to disconnect it

With out realising I entered the wrong value for the login, this then timed me out and error 22, hence I travel with three lap tops or did do before every tom **** and harry started fitting cruise lol

Aha yes error 22, that explains allot, I must have stuck a wrong value in, hence why I left it for a few hours whilst I did my other work on the car, worked fine later when coding rest of installed kit.

 

[evilbane]

Assume you tested the stalk functions with measuring blocks?

Yes and there wasn't any response apart from the brake pedal block when it was pressed in, I didn't expect the cruise control measuring blocks to show any readings if it wasn't activated though?

 

[NHN]

It will show the signals from the stalk to the steering cu, doesnt mean it will activate though, just proves one side is working.

If you cant even see these signals in the steering cu measuring blocks, then its either fitted wrong, damaged pins or faulty parts, forget engine module atm, cause until you see those MB's properly, it is irrelevant what its coded for in engine.

 

[evilbane]

It will show the signals from the stalk to the steering cu, doesnt mean it will activate though, just proves one side is working.

If you cant even see these signals in the steering cu measuring blocks, then its either fitted wrong, damaged pins or faulty parts, forget engine module atm, cause until you see those MB's properly, it is irrelevant what its coded for in engine.

Thanks for the help Nige, I'll fit Mikes loaned steering ECU and check the cruise control pins etc when I have it all apart again

 

[a8 tech back]

we still doing this lol

 

[evilbane]

we still doing this lol

Yes......

 

[evilbane]

Slight update for anyone who followed this when It started:

I have now tried Mikes very kindly loaned steering ECU that does definitely work on cruise, and the exact same Error 22 and locks me out of the Engine ECU, I even took off the new cruise control stalk to see if that may be anything to do with it, and refitted the old wiper stalk, still no luck.

As I am supposed to be able to program the Engine ECU for cruise even without it connected to the car, I'm guessing it's an Engine ECU problem, the steering ECU programs fine now.

A trip to Audi then I guess

 

[NHN]

Curious if you had the cruise wire fitted already?

Just pay someone to do it for you fella.

 

[evilbane]

yes the wire is there, a black and white cable from pin 13 on the black plug at the back of the steering ecu. I cant think what someone else could do though as 2 steering ecu's have been used and a fully uptodate legit version of VCDS and all have thrown back error 22 messages.

 

[evilbane]

After taking the car down to a friend of a friend who works at the local JCT VW dealership, he plugged it into one of there computers and they also couldn't code the engine ECU, as he was doing this as a favour he didn't explore into it too much really, so now I'm stuck and think I'll just have to live with the fact that cruise control cant be fitted to my car

 

[mike foster]

Steve, that can't be right ! There must be a reason why we can't address the engine control unit.

Is it worth removing, or at least checking, that the wire between steering module and engine module has connected correctly ?. Also check for continuity in case the wire has broken within the sheathing.

Pins have been known to not engage properly if the clip hasn't engaged properly.

I do not believe that your A3 is the only one in the world that cannot have CC if all the correct bits are installed (which they are! ).

NHN, Jb0o, A8tech, - where do we go next chaps ?

 

[a8 tech back]

check the wire but back pin it circuit disconnected from the steering control unit to the engine ecu

look for a resistance value below 0.030 ohms

if this is below check the wire for short to earth/+

if this is ok leave the ecu disconnected for a while and retry

be careful when probing the wires not to open the contacts, hence back pining will reduce this, at the steering control unit plug check with the connector plugged in either side for loose/lost connection by wiggling the plug with the multi meter connected

other than that i can only suggest the ecu is defective but suggest taking to your local audi dealer to see if vas can enable the cruise lock function in the ecu.

 

[mike foster]

Many thanks A8tech - we will try your suggestions and report back - eventually !!!!

 

[evilbane]

check the wire but back pin it circuit disconnected from the steering control unit to the engine ecu

look for a resistance value below 0.030 ohms

if this is below check the wire for short to earth/+

if this is ok leave the ecu disconnected for a while and retry

be careful when probing the wires not to open the contacts, hence back pining will reduce this, at the steering control unit plug check with the connector plugged in either side for loose/lost connection by wiggling the plug with the multi meter connected

other than that i can only suggest the ecu is defective but suggest taking to your local audi dealer to see if vas can enable the cruise lock function in the ecu.

Thanks for the reply mate, sorry if this is a silly question but by the above do you mean, use the probes on the multimeter at the back of the plug/pin (where it goes into the plug) to test for 0.030 ohms, this can be done via red probe in the back of pin 13 (Black and white cable) and black probe to an earthing cable or point in the car?

The only thing that's confused me during all this is that it was said cruise could be activated on the engine ecu without cruise being installed on the car, so would the black and white pin 13 cable cause this much trouble?

I'm willing to pay for the problem to be sorted at this point, but I have a feeling it will cost more to resolve than cruise control is worth.

 

[flying oyster]

I really hope you get this fixed soon but love the electric talk and error code
mumbo jumbo do nhn and a8 plug themselves in to
Thelr usb ports at night total respect for your knowledge

 

[mike foster]

Thanks for the reply mate, sorry if this is a silly question but by the above do you mean, use the probes on the multimeter at the back of the plug/pin (where it goes into the plug) to test for 0.030 ohms, this can be done via red probe in the back of pin 13 (Black and white cable) and black probe to an earthing cable or point in the car?

The only thing that's confused me during all this is that it was said cruise could be activated on the engine ecu without cruise being installed on the car, so would the black and white pin 13 cable cause this much trouble?

I'm willing to pay for the problem to be sorted at this point, but I have a feeling it will cost more to resolve than cruise control is worth.

I think he means testing the resistance of the cable from one end to the other. That would make sense for continuity. Should be virtually no resistance at all on the meter between the pin on the steering module plug and the pin on the engine module plug.

I think I know what he means and also testing each end of the cable for a possible short to earth.

 

[evilbane]

Right another update, maybe a biggish one, after taking the wiper motor out and removing the little plastic cover, I got this view:

A blue plug, this is where the pin 13 cable from the steering ECU is supposed to go (Least I think it is), it looks remarkably like a relay plug to me, which is fine if the plug had another cable coming from it.

A view from the inside of the car:

The blue plug is located just to the right of the relay and does not have a relay plugged into it.

I'm a little stuck guys, any help please on if this is indeed the mentioned blue plug pin 13 from the steering ECU goes to?

 

[a8 tech back]

the wire goes direct from pin 13 of the 20 pin black connector to the engine ecu 94 pin block pin 20

i suggests this is the fault that you have not wired it direct from the above

i need your engine code and model year to make sure the ecu pin is correct

your above findings are not relevant, you do need to make sure the ecu pin has been populated by factory wire, if it has then you need to give the engine code data and i will work the wiring out
0
without seeing this vehicle can you show pictures of the black plug wiring pin 13 (both sides of the plug)

and the ecu pin 20

 

[a8 tech back]

bkd cruise by a8 tech, on Flickr


ecu and pin out by a8 tech, on Flickr

ecu is under the plenith chamber cover nsf, so if you have the cover off to access the wiper motor its staring you in the face lol (held on with a anti theft shield and bolts )

the wire runs direct from t20/13 to ecu t94/20

this is the problem you have no wire linking these two control units and this is the hard-wire to lock the cruise on

J527 IS THE STEERING CONTROL UNIT

J248 IS THE ENGINE ECU

T20/13 IS THE BLACK PLUG AT J527

T94 IS THE 94 PIN MULTI PLUG AT THE ECU

PIN 20 IS PIN 20 OF THE 94 PIN

THERE ARE TWO MULTI PLUGS AT THE ECU

ALWAYS LOOK AT THE PIN NUMBER NOT THE COLOUR OF THE WIRE AS THE PIN NUMBERS NEVER CHANGE BUT FACTORY MAY USE DIFFERENT COLOURED WIRES

 

[NHN]

I was under impression wiring had been checked already.

Unless when you code the modules, it sends a signal down that wire to test functionality, I cant see the wire being the overall issue as this just signals the ecu to turn cruise on/off surely, but everydays a school day so maybe it is being a smart *** & saying where is my damn wire 1st before allowing to work lol.

Anyway as per A8 states, need to verify all the wirings there, then start again.

 

[a8 tech back]

so was i

 

[jb0o]

I wired my Cruise from Pin13 from SCCM into Pin4 of the blue plug..

Spoke to a guy yesterday who was experiencing the Error 22 as he was putting in 14463 as opposed to the corrrct value of 11463...

 

[evilbane]

The wiring from pin 13 on the black plug was checked, and is present, i assumed if this was present then necersary wiring is in place, as the guides say.
Ill check the ecu pin next time i get chance and report back!
I have defintely been entering the correct code, i followed your guide to the letter jb0o

Much appreciated so far as well guys!!

 

[jb0o]

I had a look at the car at the weekend and unfortunately I couldn't sort it either. My genuine VCDS was pulling the Error 22 code as well.

We decided to look further into it as the wire in PIN13 of the SCCM was present so why it couldn't code was beyond me. The wire from PIN13 goes into PIN4 of a plug found behind a planel underneath the front wiper motor mechanism and then onto the Engine ECU.

The following picture is of my car and the blue plug that I plugged the wire from PIN13 of the SCCM into:

This is the photo taken from EvilBane's car:

As you can see, the blue plug isn't even present... would anyone have any ideas why this would be?

 

[NHN]

Whats his engine code, year of car & gearbox code?

 

[evilbane]

Whats his engine code, year of car & gearbox code?

Not sure of Gearbox code, but BKD and very early 2005 plate

Thanks for posting the pics as well Jonny

 

[mike foster]

Evilbane - chances are the gearbox code is HDV but will be on the sticker in the spare wheel well.

No wonder I couldn't make head or tail of the problem - not only is the wire not there, the ****** plugs aren't either !!! lol

Maybe it was being built as a left hand drive car and they changed their mind at the last minute. Jb0o did you check the other side - surely they must be there somewhere ?

 

[jb0o]

I didnt Mike, didnt really think to check!

Confused the hell out of me, lol.

 

[Ash187]

Hi guys,
Just saw the last update with the hole instead of the plugs... but mine is the same!

When i installed the cruise in mine i had no issues with it. It was built late 2005 (classes as 06), the wire from pin 13 was already there in mine so i didnt bother checking where it went. here is a pic of the 'hole' on my car

 

[jb0o]

The plot thickens!

And you had no issues coding cruise?

My bets on the plugs located elsewhere, like Mike suggested could be on the opppsite side, and there is just a break in the wire or something..

 

[Ash187]

nope no coding issues at all... i fitted the cruise and MFSW at the same time, just fitted the parts to the car and coded it all together... only thing i was panicking about was the errors coming up on the DIS for the steering wheel sensor (first time i had ever done this kind of thing at the time), Nigel got a call from me asking what to do
but he is a good lad and calmed me down.

 

[a8 tech back]

has anyone considered what i said a long long time ago

run the wire direct to the engine ecu from the steering control unit like you have to do on tt

 

[mike foster]

Yes A8 I did , a long time ago !

However, we had to eliminate all the other possibilities first surely ?? lol

To be honest, one would not expect the set of circumstances presented in this case and surely this must be almost a one-off on the A3 ?

Have you a theory as to why this particular A3 has been wired like a TT ?

 

[evilbane]

has anyone considered what i said a long long time ago

run the wire direct to the engine ecu from the steering control unit like you have to do on tt

Can this be done?
straight from Pin 13 from the steering control module to the ECU located under the plastic casing in the engine bay?

 

[mike foster]

Can this be done?
straight from Pin 13 from the steering control module to the ECU located under the plastic casing in the engine bay?

Yes mate - you will need that wire back that I gave you in the first place !!!! lol

PM me and I'll swap it for the steering module that you didn't need !!!!

 

[evilbane]

Yes mate - you will need that wire back that I gave you in the first place !!!! lol

So it's back to square one lol, hey it's all about the journey remember and what a journey

 

[mike foster]

Not quite square one - we now know you have the most odd-ball A3, wired like a TT, that needs TLC applied to make it do what you want !!

Can you do the wiring by yourself or do you need some help ?

 

[evilbane]

Not quite square one - we now know you have the most odd-ball A3, wired like a TT, that needs TLC applied to make it do what you want !!

Can you do the wiring by yourself or do you need some help ?

I could probably do it by myself but help and support would be appreciated as electric just isn't my thing really, I'm more of a nut and bolt guy