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What actually is MUT III in detail?

Posted: Fri Sep 07, 2018 7:36 am
by datom
Hello fellow iMiev drivers,

I wonder what makes the V.C.I. (-Lite) so special? Can we use the MUT sofware with a "normal" OBD dongle?
Also, would it be possible to "fake" a VCI with an Arduino or the like?


Best,

tom

Re: What actually is MUT III in detail?

Posted: Fri Oct 12, 2018 8:41 am
by datom
Nobody?
I would like to have the functionality of the MUT III but without having to spend much money for it.
Would it be possible to connect to OBD with a dongle (like OBDLink LX) and build a VCI-like interface with an Arduino?

Best,

tom

Re: What actually is MUT III in detail?

Posted: Fri Oct 12, 2018 5:50 pm
by coulomb
I think it's possible to write an open source MUT clone. I have a copy of a Mitsubishi update CD which may contain the required information. But it will require a lot of reverse engineering and time. There is a small chance I'll find the time to attempt this, and that I have enough skills to do it.

Re: What actually is MUT III in detail?

Posted: Sat Oct 13, 2018 7:23 am
by datom
That would be possible with a lot of reverse engineering.
What about leaving the MUT software alone and just "faking" a VCI?

Re: What actually is MUT III in detail?

Posted: Sat Oct 13, 2018 11:58 am
by JoeS
Um, sorry, I'm delinquent in trying to keep up with acronyms -

VCI = Virtual Circuit Identifier?

Re: What actually is MUT III in detail?

Posted: Sat Oct 13, 2018 5:56 pm
by coulomb
datom wrote: What about leaving the MUT software alone and just "faking" a VCI?

You still need to know the various CAN IDs, data formats, how to clear error codes, etc. All that required detail is only contained in the MUT software, as far as I know.

Certainly, we'd want a hardware platform more convenient than the actual MUT, which I believe requires ancient Windows versions and the like. So yes, fake in that sense.

Re: What actually is MUT III in detail?

Posted: Sat Oct 13, 2018 6:12 pm
by coulomb
JoeS wrote: VCI = Virtual Circuit Identifier?

Vehicle Communications Interface. That's the hand-held part; the MUT looks like it's a smallish ruggedized laptop. There are two models; the one with the small display and three buttons, and the VCI-Lite without a display at all.

I believe that the VCI can communicate over USB with a computer running a suitably ancient version of Windows using special software... is that correct? Please pardon my lack of expertise here (and laziness of reading the below-linked manual).

Some information here: Mitsubishi M.U.T. 3 Manual .

Re: What actually is MUT III in detail?

Posted: Mon Oct 15, 2018 1:03 am
by philou
The MUT III software can be found here:
http://mmc-forum.ru/viewtopic.php?p=1173#p1173

I haven't found time to start analyzing/decompiling the software to see how it's made.

But creating a replacement for the hardware USB to CAN can be tricky without actually having one to experiment with.
We need to know if heavy data treatment is done inside the hardware (which would be very complicated to reproduce without having the specs), or if the hardware acts just as a serial-to-CAN like most of the OBD interfaces. In that case, imagining a compatible replacement would be feasible.

Re: What actually is MUT III in detail?

Posted: Fri Oct 19, 2018 1:25 pm
by datom
It would be really great to replace the VCI with an OBD dongle or a simple microcontroller without having to change (much of) the software (MUT) side.
More ideas, experiences or insights anyone?

Best,

tom