I have run into that message but can't recall specifically which issue I had at the time was causing it. However the behavior you described when connecting the bypass is not something I've experienced. As far as I know when I have connected a bypass I see no change in behavior from the car.

A few thoughts:
A) Change the interface to "high speed" in MES (number 1 below).
B) Try number 2 below.
C) Try connecting to another module like the body control module under the body category and see if that works.
D) Try removing the bypass and connecting to the body control module in MES (without the bypass you can read but not write).

I copied the below from one of my posts in another thread:

1) In MES go into settings in the lower left (or press f9). On the Interfaces tab select ELM 327 1.3/1.4/1.4b/2.1 (High Speed). There is a drop down below that to select your serial port. If you open that drop down, you might just have 1 option. PIck it if not already selected. Otherwise you might need to try each one.

2) You might need to change the device settings for the interface. There are instructions in the MES documentation in the folder where it's installed on your computer, but if you aren't super familiar with computer stuff it might be easier to get it here: Multiecuscan - Diagnostics software for Italian cars using the download button near the top of the page.

Instructions start on page 3 to go into device manager and change the latency timer. On mine I also needed to change receive and transmit to 38400 to get things working correctly. In Windows 11 you can get into device manager by hitting the windows button (on the keyboard or click on the windows logo at the bottom of the screen) and typing "device manager" into the search box. Hopefully that makes sense, as I know you mentioned you are semi-computer challenged so I wanted to be sure it made some sense.

In the MES user guide it will show a screenshot of changing the receive buffer and transmit buffer, but I do not believe this applies to you. You would just be trying the settings on page 3 and 4 of the guide.

 

Are you trying to connect to a powertrain function with one of the cable adapters attached by any chance? If so you will get that error. Powertrain does not use an adapter.

 

from your description, I would guess there's a problem with your SGW bypass connections/install......

 

jwq2 could be right. with SGW connected there should be no errors on dash. check SGW bypass connectors if by any chance you didn't bend any pins.
also you can connect everything back and test connection with MES then

 

Hey guys. Thanks for the tips so far. All the messages in the dash cleared after a trip around the block and a couple restarts. Not trying to connect to any power train modules, body and service modules won’t connect. With bypass disconnected, MES still won’t connect. Can’t even get to the point where I can read codes, let alone modify anything. At the current moment all I have installed in the car is the extensions but connected so SGW is active, so no bypass. Car acts as normal, drives normal, so I don’t think anything go damaged. It really seems like an issue in the com/usb settings but don’t understand what else I could change to make it talk. Especially considering the tests say it’s ok…

 

Think it could be an issue with my OBD/USB interface itself? Attempted to connect using a different software, FORScan, and same issue. It recognizes the adapter itself, but is unable to connect to the vehicle. On the flip side, I have a very simple handheld OBD scan tool that i dusted off and plugged in and I am able to read off of the OBD port and even see live data such as RPM and MAP pressure readings.

 

could be poor quality adapter. there is no ELM327 version 1.5. check what kind of drivers device is using and adapters VID/PID in device manager.

 

Below is what I am seeing in device manager. I didn't install any drivers, just plugged the interface into USB on my laptop and it auto installed. No driver/software was provided by Alfissimo with my purchase. Anything seem off? Not sure what I should be seeing. I am not a complete computer novice so I have tried playing with a lot of settings, but this seems like something very specialized that I am missing. Maybe there is some specific driver I need to download that I cannot find?

Copying a picture of the actual interface I got from Alfissimo. Does anyone else have this exact interface and could provide some input on driver/MES settings I might could try? I can't imagine buying from a trusted source would lead me to getting a low quality adapter, but could be a dud...

 

.....
Copying a picture of the actual interface I got from Alfissimo. Does anyone else have this exact interface and could provide some input on driver/MES settings I might could try? I can't imagine buying from a trusted source would lead me to getting a low quality adapter, but could be a dud...

View attachment 123964

Should work according to the MES site :

 

OBD Protect should be good quality although never used one.

VID/PID can be found under Details tab for your adapter in Device Manager. also check if your "latency timer" is correctly set - MES user manual tells how to set it.

if none of the above helps you can try to install older FTDI drivers - v2.08.xx

Download - ELM327 USB Treiber Driver - OBD-2.net - Das Fahrzeugdiagnose Informationsportal

Das Thema OBD-2 Fahrzeugdiagnose bietet reichlich Diskussionsstoff und ist top aktuell. Diese Seite bietet umfassende Informationen, Tipps sowie Hintergründe und Historie rund um das Thema On-Board Diagnose. Insbesondere geht es dabei um OBD-2/EOBD Diagnose bei modernen Fahrzeugen. Wir werden...

www.obd-2.de

 

Here is what I see for VID/PID. Honestly not sure what I need to be seeing with these numbers. Do I cross reference these somewhere within MES? I'll try the older drivers next after I at least know the device is configured correctly.

 

The SGW must be installed when you connect. You need to go to hardware manager and get the com port number and set the speed. Once that's done, then start MultiECU and can figure the communication under setup. Should work. As stated earlier in thread that the different modules used the different adapters MultiECU should prompt you when they're needed.

 

googling VID/PID will tell what device it is - your's returns FTDI chip so should be good. a while ago market was flooded with fake FTDI chips and they caused many problems like wrong VID/PID or won't work with newer FTDI drivers.

 

@maier_michael, everything that you have written indicates a bad connection to me. Make sure all the pins are straight (as has been mentioned before). Also check continuity in the cables even though this is laborious. It is possible that the elm 327 has a problem - it would be good if you could borrow someone else's interface to check that.

 

Just for reference before my next comment, reiterating that the current config in my car is two sets of extensions between the original wire harness and the SGW box in the car. Set up so that the extensions can be unplugged to insert the SGW bypass, but currently no bypass is installed.

That being said, if if was a bad connection from a bent pin or bad cable, wouldn't the car be freaking out or acting up due to the SGW box not showing as being connected? Or would that not necessarily be the case? It would be like if I just went under the dash and unplugged the SGW and left it that way. I can definitely check that box and test, but just wanted to make sure I was understanding how I would expect the car to behave. If anyone in the Birmingham, AL area reads this and has a cable I can borrow to check off my ELM327 interface itself being the problem, I would greatly appreciate it.

And @fast_dave I suppose I never mentioned it, but definitely went through that guide as well under the ELM327 section. Its stated as simply getting drivers installed and making sure your port speed is set to 38400 then test. And my test shows everything as OK. The test recognizes my interface as an ELM327, is there any way that maybe I need to set this FTDI up as something different than an ELM327? Even selecting a specific dropdown of OBD Protect, my exact interface name, doesn't help. I'm at such a loss right now......

 

Since I've seen no reference to this GUIDE

* Multiecuscan User Guide -ATTACHED *

The first pages referring to how to set up which port on your computer you're using, latency & speed are most important to your initial success in connecting.

Hope that helps -

 

if car comes with SGW there is no need!!! to install SGW bypass just to connect to car with MES or any other diagnostic scanner. it will allow you to perform passive diagnostic like read DTC, read live data. what you won't be able to do is clear DTC or perform any kind of adaptations/tests/actuations.

that said, if you disconnect SGW on car and leave it without SGW bypass, you won't be able to connect to car at all. also on MY20 cars infotainment won't start, can't remember if that's the case on pre-MY20 cars. and with SGW unplugged I think there won't be any errors on dash but not sure about that.

 

Thanks for clarifying that! That makes me feel better that it is more likely either the ELM interface itself or its connection to my computer and MES than it is something in the car, as I can passively connect my standalone OBD reader and see live data.

If anyone else has any other thoughts, please chime in! I appreciate the feedback. Getting to the point where I might just order a new interface/cable and try that to narrow it down since I'm not sure I can get my hands on another one to borrow. It could still very well be settings on my computer, though I am not sure what else I could try that I haven't tried already.

 

Please see below.

ELM is being read by MES which means it's good so far. It's just not set up properly most likely. Make sure to download drivers and set up interface in MES properly.

Go into settings> Interfaces (interface plugged into computer ONLY)
Scan for interfaces or choose ELM 327 - (HIGH SPEED) Careful there are 2 ELM 327 options, the one you want is at bottom of list.
Redraw Freq. = FAST
Make sure you are showing a serial port. This is where the drivers come in.




IMPORTANT BEFORE STARTING:



*PROMO CODE MUST BE ENTERED AND REGISTERED ON THE MULTIECUSCAN.NET WEBSITE, NOT DIRECTLY ON THE SOFTWARE DOWNLOADED. OR YOU CAN SEND HARDWARE KEY AND PROMO CODE TO SUPPORT@MULTIECUSCAN.NET AND THEY CAN ACTIVATE IT FOR YOU. *



Directions for downloading/Installing and setting up Interfaces :

The licenses can be activated at the following link - https://www.multiecuscan.net/RegisterPromo.aspx . You have to enter Name, email, License code, Hardware Key and click “Get License”. After this the system will generate the license and will send you an email with the License Key for activation of Multiecuscan.



Here is how to find your Hardware Key:

1. Download and install latest version of Multiecuscan from here

2. Start multiecuscan

3. Open the registration window (by clicking on the blue “REGISTER” button in the lower left part of the screen)

4. You can see the Hardware Key in the registration window (see the screenshots below)

INSTALLATION GUIDE PDF*

Multiecuscan - Diagnostics software for Italian cars

https://ftdichip.com/drivers/vcp-drivers/

• PLEASE READ ENTIRE INSTALLATION GUIDE, ADD DRIVERS IF NEEDED AND SET UP MES AND INTERFACE AS SHOWN. IF YOU HAVE ISSUES, YOU MUST CONTACT MULTIECUSCAN AT SUPPORT@MULTIECUSCAN.NET.
• WE HAVE VERY LIMITED TIME TO DIAGNOSE COMPUTER ISSUES AND HAVE TO REFER YOU TO THE SOFTWARE PRODUCER.

INTERFACE ELM327 MUST BE SET TO (HIGH SPEED) UNDER INTERFACE SETTINGS.

DRIVERS MUST BE DOWNLOADED.

Thank you for the order.


If all else fails please email MES for help: Support@multiecuscan.net

 

Hello,
Did you ever get this solved? I'm stock where MES scans, recognizes the interface, and passes the test. Once I connect to the car. my 2018 GIULIA it gives a message saying the interface is too slow. I have tried and I can't connect to the MES, help please.

 

Hmm, that is a different error than I ever got. That makes me think maybe a setting is not correct. Maybe need to mess with latency timer or something to that effect? Mine always just failed connection completely, and turned out I had an unlucky bad adapter and once replaced everything worked perfectly.

 

Type 2 it is.

Thank you sir,

 

Hello all, reviving an old thread--need help connecting MES to my 2018 Giulia 2.0 Ti.

I'm wanting to reset service intervals; I've done it before on this car, with a different PC laptop but same OBD connecter. I upgraded my PC laptop recently, transferred the MES license over to the new machine, installed correctly, starts up fine.

In Settings, under Interfaces, I've chosen my OBD II/USB interface, which is OBD-Direct. It looks just like the one pictured in post #9, except it says OBD-Direct. Orange label, long USB cable lead.

Indeed, "OBD Direct/Protect" is an option in the list of interface types, so I chose that. In fact, I chose it for all 4 ports ( I also tried just assigning it to port 1). I then chose the only available option offered in the next Serial Port drop-down, "COM3 (Intel(R) Active Management Technology". Speed defaults to 38400 with these settings. I do NOT have "High latency mode" checked.

I've tried at least 20 times to get the laptop/MES to see the car, and it will not. It won't connect. I know the OBD USB interface works, I've used it before. My car is a 2018 (built 12/17) and does not have the Security Gateway. I've tried several combinations of interfaces and speeds, and the High latency mode box checked and unchecked.

Can anybody help me trouble shoot? This is very discouraging.

Many thanks,
Greg
Austin TX