Anyone had any success with an ELM323/327 interface

I had a look at the web site but could not find it. How much does it cost / where is it downloaded from?
I am very interested to try it.

I'd drop them an email - only just developed I gather

so what exactly have you bought argo? software to go with an elm327 interface?

is the only option on the software to read and reset trouble codes? does it have the other options but they dont work or does it not have other options?

It works with both ELM323 & 327 (not tried it on a 327 myself but sure it should work) and as already said it can only show/reset codes. It's too recent for their website so best to email if interested.

It basically puts end to this thread as I now know for certain my JTD is NOT OBDII compliant. It never has been an issue of the laptop you use, using USB or RS232, how fast it is or the ELM interface itself. My JTD and a good many others are simply not OBD compliant and that's the answer.

If anyone gets as far as "ELM interface detected" (or something similar) on the log of the program they're using but no further then the problem is they're not using Fiat based software.

The definitive test would seem to be: (the free program 'DigiMoto Light' is best for doing this)

• AT SI - if "OK" the system will respond to Fiat based software i.e. it's connected up properly.
• AT FI - if "OK" then your car IS ALSO OBDII compliant

The search now is to find if any other companies can provide dedicated Fiat based diagnostic software

Did you buy this and if so how much was it, or are you testing it for them for free?

Something like that - and before you ask let me tell you it's hardware authenticated (tied to the laptop you install it on)

then im in the same situation as you. interface detected, atsi 'ok', atfi 'error'

lets hope they make fast progress. did they tell you what protocol the car uses?

so this means that the software needs to be configured to turn the garbage results into readable figures and that is what current software seems to do.

If I were you I'd ditch the ELM altogether. The ELM in theory should be able to connect without any software at all. You can use hyperterminal. The KWP2000/ISO14whateveritis interpretation is done on a PIC processor in the cable itself (which im sure you all already know). So if that chip cant talk to your ecu your stuffed.

There is some little known software called unidiag, this apparantly can talk to the edc15c7 ecu that is present in some Stilo JTD's using a definition file for the edc15c5 which is used in the Alfa 166. This works with a "dumb" cable, something without an interpreter chip, and the protocol interpretation is done on the computer itself, rather than the cable.

Ive had it working with my Punto HGT Euro2 and up until now nothing would talk to it. I built a very simple cable to do this (cost about 60pence) plus the price of the OBD connector.

It might be worth looking up the particular model of your ECU to see if it uses both a K and an L line, as AFAIK most fiats 97-2001 (pre OBD2) just used the K line.

Regards

To be honest mate I'm pretty much through with ideas of this and that might work but if someone has an idea they've tried and know it works then great - lets hear more about it

What's important is we have a solution to this at last (at least in terms of reading/clearing codes) so that's where I'm sticking for now

That's right Frank (although it's more a case of talking with different codes which are not part of OBDII rather than actually converting anything). In the end it's all down to the software so as it works on mine then it must work with your 05 JTD.

You'd then have proof your JTD is NOT OBDII complaint which would take some explaining

I'm really puzzled by this - I was able to connect a generic ebay 323 USB unit to my 04 JTD and all the outputs appeared to be correct.

My device is currently on loan to stilosporting, but as soon as it comes back (no hurry) I'll set it up again and re-check. I'll closely detail all the settings and outputs, and report them here with screenshots etc.

It's not the year your car was registered in the UK but the year your car was built that is the deciding factor as to whether you have EOBD (OBD2) or Fiat's own OBD

For instance, i have a 1999 Bravo which is Fiat OBD1 if you like and if you try to talk to that using OBD2 you'll just get eng temp 215, a bit of fuel trim bank info and that's about all. Pretty much the same output as people trying to connect their pre OBD2 JTD's. To get a PC to talk to Fiat OBD1 I think you'd need to wire up your own interface plug and possibly go back to basics with commands and some fancy circuitry to "wake up" the ECU to give out its information.

The information is in there, in the ECU, but without the right connections and software, it's not going to talk to you

Could have a look here in the Cinquecento section
http://www.fiatforum.com/cinq-sei-te...r-project.html

The protocol used isnt the same as the Cinq/Sei 16F ECU, as this actually outputs some code at 1200baud when you switch the ignition on, then switch to 7812.5bps I think.

the 97-2001 Fiats use KWP2000 but do not have an L line. The INIT command is sent down the K Line at 5 baud(slow init), then comms resumes at 10,400baud. ELM interfaces INIT down the L line then do the 10,400bps comms down the K line. AFAIK the ELM sends a 0x33 as the wake up command but most of these fiats you are talking about will want a 0x10 command.

There are Fiat technical documents floating around that explain it all.

Ive had a simple interface going with a few different fiats, using some some software called unidiag or KWP2000 test, you can get it from the authors yahoo group. Its free. http://autos.groups.yahoo.com/group/unidiag/ You can also write definition files for different cars so its pretty customisable!

Ive had it working with a 03 stilo JTD, Fiat Punto HGT W REG '00 and a '00 reg Punto sporting.

The only thing is it doesnt work with the elm interpreter cable, it only works with a simple level shifter cable. The design I used was designed by someone called will hoult (http://forzavx.com/gecu/monitor/tutorial-monitor.html), costs about £1 to build + the price of the connector - I just merged the K & L Lines together so all the comms happened down K Line,.

I know you want definative answers but there really isnt much about for cars of this era - nothing was properly standardised. Ive been messing around scratching my head for months, just to get where I am, which is no where near a ELM type solution



Dan

thank you for your input.

hopefully we will find a solution.

Just got an ELM327 for my 53 plate Stilo JTD 115 and it works fine as far as I can tell (I'm using proscan with it which autodetected the car instantly). Can read error codes, show coolant temp, engine rpm, air intake temp, and loas of other stuff! Really pleased with it!!

If anyone needs any configuration information or anything else I am happy to help, or if anyone in the Whitley Bay area wants to test to see if it works then just pm me.

P.S. Does anyone know if the horsepower tests work using proscan as mine shows bang on 115 just want to know if it calculated them correctly and if the 0-60 speed tests work.