Hello,

first explain what car and engine it's and what module shows error. ELM seems good one and yellow adapter too.

 

New version reset COM port setup. You need to SCAN for correct COM port before you connect.

 

https://www.alfaowner.com/posts/17983966/

Use the test button in the MES settings

 

Ah, that sounds like a step in the right direction, it’s a Brera Spider 2.2 JTS by the way.

Thanks very much for your help chaps, I’ll give those a try and shall report back!👍

 

Yellow adapter cable you won’t need on 939.
Only green to connect to ABS and Xenon module and purple for TPMS.

 

I’m still fighting with the FTDI driver installation, I use Macs and have bought a Windows laptop specifically for Multiecuscan and it’s not what I would call intuitive!

There are three com ports and they don’t appear to have identities, ie; com 1, 2 or 3, but I’ll battle on and will report back as soon as I get it working.

 

When you connect ELM to USB it must recognize new hardware at least, it's one of these COM port or may be something in other list. Check these COM properties, may be your ELM driver is CH340 or other.

 

Install the driver, connect adapter to usb port, go into device manager and under Ports, you will see the COMx device with the FTDI driver. It should disappear and appear as you insert and remove the adapter. The number varies depending on what usb port you use.

 

Thanks wbanham, I have three com ports on the laptop and it doesn't tell you which is which, I guess I just have to shut down the programme and keep trying each port!

MES scan works perfectly and gives me a report on the engine, but when I try to connect to the body, it says there is an error...I'll keep trying tomorrow, I've spent four days messing around with this and I'm wondering if I'll ever get it sorted!

 

Are you confusing the USB ports (physical) on your laptop for com ports (electronic) in device manager?
However if you can connect to the engine ECU (assuming you are not in demo mode for that) as suggested that would suggest your port is set up ok but could be an issue with the latencies. You shouldnt need the yellow adapter for those modules.
This thread may assist re set-up - MES set up

 

think I see the problem, the instructions didn't include steps for a new setup, try this.

- In MES settings, Interfaces tab.

enable 'show available COM ports only' box
click 'Scan for Interfaces'

set the interface type to one of the ELM327 (USB) options, set serial port to COMx and baud rate to 38400.

click the Test button. The screen output should say "This interface is compatible with ELM 327 1.4! Should connect properly with all CAN modules."

---
body computer usually requires a coloured adapter.

 

---
body computer usually requires a coloured adapter.

On 939 only xenon, ABS and TPMS require adapter.

@Ivor Hawkins MES will return a message if trying to connect to any of those that requires adapter, telling you which adapter to use.

 

Thanks boss, I’ll give that a try with fresh eyes tomorrow morning, that seems to make a lot of sense!

 

Crikey this is a pain, I wish I hadn’t updated my MES software!
Ive got it to scan for modules and it’s thrown up a code for the engine, which I knew about but it won’t allow me to connect to the body computer, it throws up this:

then when I do a scan for the CAN connection this comes up:

do you think it could be the cable?

 

Exactly what ELM327 are you using?

 

If previous MES version with same ELM adapter was working with Body ecu and now not with new MES version, it could be new MES version bug.
If ELM connects to engine ecu ok, then it's not.
Anyway check MES option, interface speed, for engine ecu should be 38400, for Body try 57600 and 115200.

 

Thanks fellas. fruity, I’m using a “proper” MES adaptor (picture at the beginning of the thread” so it should be okay…

Ceecao, thanks for the additional info, Ill Give that a try!

 

Use the TEST button in the settings->Interface screen

 

Thanks again wbanham, yesI did run the rest a few times, and strangely everything came back as okay, I’ll give it another try today and see what happens.

I shall report back!

 

Well, I’m still struggling with MES.

I’ve scanned and tested the interfaces, the connection is working well at 38400, tried the other speeds, but it wouldn’t connect.

When I scan DTC it connects, but only picks up on the engine.

It connects to the engine, no problem, but anything else like ABS,Dashboard or Body and the canbus error pictured above comes up.

Heres the interface screen, for reference.

oh, simulation works fine as well, if no one has any other ideas, I’ll have to call on my local AO member and see if his MES can sort it!

 

did you use this same ELM adapter with older MES version and it worked ok body, abs etc?

 

I know your OBD2 adapter says 'modified' (I interpret that as no 100 ohm terminating resistor as it is not needed for Alfas) but the OP in this post had the same problem and removing that resistor fixed it. Try another adapter.

Cannot connect to anything other than engine ECU - Multiecuscan

 

Quick update, I have the modified ELM adaptor to bits and with the aid of my watchmaking tools and a soldering iron, I’m going to see if removing the resistor works.

 

If it has 120 Ohm resistor between CAN 6-14 then yes it needs to be removed, how about question #26. May be you can do photos to board and chips for better info.

 

I’ve removed the resistor and no change, connects to the engine but no other modules, so I’m ordering the latest Multiecuscan modified ELM connector and walking away from the car for a few days!

Thank you all for taking the time to respond, I really do appreciate it.

once the new connector arrives I’ll give it a try and report back.

And in answer to your question ceecao, yes, it worked flawlessly with the previous free version of MES, but I upgraded the lates version due to the time constraints on the old one.

 

Then it's a issue with MES or PC, not the ELM.
You can try uninstall MES, clean Windows register, install old MES free version (2.x or 3.x is ok) and try again.

 

If you want try this: Fiatecuscan 3.4.2 free, you don't need even uninstall MES. Setup ELM, port and go.

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