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Thread: I must be dense lol - I simply can't find where to read MALF Codes.

  1. #1
    Carb and Points! alv's Avatar
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    I must be dense lol - I simply can't find where to read MALF Codes.

    Greetings,
    I am new to tuning,TunerproRT and the scene.
    That said I have read the intro documentation posted in the stickies and read some posts on this topic but I am missing something. How do I display the trouble codes?

    1988 corvette, 5.7 DN 4+3, 1227165 ecm, using registered TunerproRT, 32B adx for data logging.
    I don't see the buttons with D,F,V,M, but do see the data list default but cannot find the option to read the Malf codes..

    Thanks

    AL
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  2. #2
    Fuel Injected! PlayingWithTBI's Avatar
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    Go to Acquisition/Show Data List then click on the drop down box there and select "Error Codes"

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    Carb and Points! alv's Avatar
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    Thanks for the follow up.. when I try that no other options are present. Could it be possible that itís not supported or available in the ADX Iím using?
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    Fuel Injected! PlayingWithTBI's Avatar
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    Probably, maybe someone else can help you with the right adx file?

  5. #5
    Carb and Points! alv's Avatar
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    I hope so. I just looked at the ironduke adx and it seems to have the malf codes in the configuration file. If anyone has a definition file for an 1988 GM y body please share. In the mean time I’ll look at the 6e adx next.

    Thanks!

  6. #6
    Fuel Injected! steveo's Avatar
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    wow that 32B definition really sucks

    yet another one-year ecm that nobody has put time into

    i guess for the time being you can flash your error codes with the ol' paperclip trick and get the rest of your data with that adx file.

    i had a look and that's one of the old ecms that does both 160 baud and 8192 baud (with extra info in the 8192 baud mode). look how many parameters your ADX is missing... if i were you i'd write your own ADX. takes a bit of work and experimentation but the results are worth it. that ECM isnt so bad for its age

    all the info you'd need is here: http://www.gearhead-efi.com/gearhead...f/aldl/A028.DS

  7. #7
    Carb and Points! alv's Avatar
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    Steveo thanks for the info and advice.. 32B is Spartan that is a fact. Ugh! one year ECM so sad but if I understand you correctly it has the advantage of 160 and 8192 baud compatibility:)
    Okay, I am here to learn so my challenge to get the ADX file that I want changed to build one which means I have to learn what is involved in editing the ADS/ADX with the detail from the DS.
    That AO28 Data stream looks great, Is the language the same? I can't imagine it's a simple cut and past append to the ADX file.. right?

    Is there a converter tool like (ADS to ADX) or hopefully a tutorial that I can read through to get oriented on the basics?

    Thanks!

  8. #8
    Fuel Injected! steveo's Avatar
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    actually adding new items to the ADX is pretty simple but you'd have to do this one manually. it'll be really fun to learn and you can share your results with others, they'll really appreciate it, believe me.

    you don't have to add everything (in other words describe the entire datastream) at once, just the stuff you're interested in

    i'll write you a small tutorial, im sure you can find the 'edit adx' and 'add item' in tunerpro yourself, i don't have tunerpro in front of me

    first some computer basics, things in your datastream are specified in bytes, each of which is 8 bits. byte one might be eight error codes of one bit each, bytes two to three might be a 16 bit (large number) specifying RPM.

    each item has to have:

    - a description of what it is
    - an offset (its byte position in the data)
    - a size (usually 8 bits, meaning input is 0-255 but sometimes 16 bits meaning input is 0-65535, and in that case it takes the byte after that offset as well, it could also be 1 bit)
    - a conversion formula (to turn your 0-255 into 0-6000rpm, for example)

    all other parameters are optional



    now the real trick is your adx is set up for the 160 baud stream which is pretty slow (meaning bad data rate and you can't fit much data) but very easy to use since it just spits data out all the time.

    if you want to write an ADX for your 8192 baud datastream it's more challenging because you need to actually ask the ECM to give you the data.
    you usually need to create a 'macro' in tunerpro that'll first silence the ECM (becoming the bus master), then request the datastream to be transmitted. it's a lot simpler than it sounds but honestly you can just cheat and start with an 8192 baud ADX for a similar ECM, maybe one of the other 7165 masks use the same addressing? might just have to modify the packet size

    if you get a good start on your own we can help you along, having another person around that can write ADX files is really valuable especially for cars nobody has put the time into..if you fail hard and can't get any 8192 baud data i'll try to get you a starter ADX going

  9. #9
    Carb and Points! alv's Avatar
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    steveo, thanks for the brief write up! Fail or not I'm going to give it a go and continue to post back to this thread to help keep it in one place. I've read what you wrote a couple of time and will start to investigate TunerproRT functions then reply back with my results to identify where my gaps are.

    Not sure how far i'll get but I appreciate your help and guidance on this amigo.

    Al

  10. #10
    Fuel Injected!
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    Best thing about the 1227165 is it can run a lot of different code bases and can have 8192 baud fast data logging with a tune swap .can be maf or map and tbi or pfi. And has some custom code made for it for boost and extended rpm etc

  11. #11
    Carb and Points! alv's Avatar
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    @delcowizzid... Thanks for the additional insight.
    That sounds great and even more incentive for me.

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