Tdi ecu

[KINGPRAWN]

it seems like my ecu from a "96 golf tdi is too old to be supported by my " scangauge" ... (It never connects, just sits trying) !!!
If I find another ecu from a later car will it work ... Does something need to be done with the immobiliser within it ??? See them on eBay but no mention of what has to be done before I can fit it !

[davegsm82]

What ECU do you have? Part number?

I've got a '97 MSA15 on my AFN TDi, it's supported by VAGCOM but don't think I've had success with Scangauge, not that I've ever wanted to use it that is.

Dave.

[KINGPRAWN]

What ECU do you have? Part number?

I've got a '97 MSA15 on my AFN TDi, it's supported by VAGCOM but don't think I've had success with Scangauge, not that I've ever wanted to use it that is.

Dave.

Thanks ... I'm not sure but I'll have a good look when all the camping gear is done with !!!

[syncroandy]

I have a pile of ECU's here and a Scangauge so can do some quick investigation if you wish. Give me a bell when you have your part number.

[KINGPRAWN]

I have a pile of ECU's here and a Scangauge so can do some quick investigation if you wish. Give me a bell when you have your part number.

Thanks Andy .....I'll be in touch very soon
Could you break the security part of it as I don't have the chip key as its already been decoded ... If that's the term ??

[KINGPRAWN]

I have a pile of ECU's here and a Scangauge so can do some quick investigation if you wish. Give me a bell when you have your part number.

Thanks Andy .....I'll be in touch very soon
Could you break the security part of it as I don't have the chip key as its already been decoded on mine... If that's the term ??

[davegsm82]

If Andy Can't do it then I can, I had to disable the immobiliser on mine to get it running 'headless' before I fitted it into the bus.

Dave.

[KINGPRAWN]

If Andy Can't do it then I can, I had to disable the immobiliser on mine to get it running 'headless' before I fitted it into the bus.

Dave.

Thanks Dave ... Just waiting to hear back from him ! He's already told me that mine is a very early ecu ... Dated "94 ! Although from a "96 plate car ? Are you able to disable the immo ???

[syncroandy]

Mr. Prawn, the nearest ECU I've got to your 028906021B, is a 028906021C (MSA12 type) from June 1994, which doesn't have immo, so I suspect your B suffix doesn't either. These very early ECU's have a slightly different pinout to the later ones, and use an external air pressure sensor module in addition to the hose connecting to the inlet manifold. They are 8-bit CPU's and have a different internal construction, and software.

I've been working on a customers job today, which has an AF suffix ECU from a year or so later (December 1995), this did have immo (which I've disabled). This is also a black plastic case, 8-bit CPU. I just confirmed my Scangauge will not communicate with it.

I also just checked a 028906021AT (Passat 1Z, March 1996, MSA15.5) ECU, which is a metal case, 16-bit CPU. This does communicate with my Scangauge. The only significant difference on the pinout of this versus your very early ECU, is the GP indicator lamp is on a different pin. With the correct tool, it's quite easy to pop the pin from the ECU connector and move it, but you'll have to decide whether you want to do this. I wouldn't recommend running without a GP indicator.

Andy

[KINGPRAWN]

Thanks so much for your time here ... I'm happy do do what ever you recommend to get around this ... I'd be very grateful if you could supply a unit and guide me through doing what will need doing .... I don't have a glow plug indicator wired .... Andy

[syncroandy]

Hi Andy, your replacement ECU is on its way to you..