ECU scan software for free
 

As I mentioned a few months ago, I bought an ECU scanner program for pc from OBDDiagnostics called MEFIscan3/ScannerPro. I am not very happy with the performance of the package and have started writing my own software. I am experienced with this and have done some applications before for cars. This application will be almost identical to ones I have done before, so no surprises here. It make take a few weeks or months to get it done to a good usable level. But if anyone is interested, I will be giving it away for free via a download, as I have done for previous automotive programs. The cable that came with the kit can be duplicated for $20 for a basic cable and about $10 for the 10-pin connector required for the boat. You would just have to solder it to the cable. The use of a Windows PC nearby, preferably a laptop or notebook, would be required also.

Let me know if anyone is interested in using it. This would only work for the MEFI-3 ECU modules. The part numbers on the MEFI-3 ECU, as far as I know, would be 16236999, 12489488, or 12489493.

There will be no advertising, nag screens, or any strings attached with the use of this software. If you want to see what I have done before, just do an internet search for Scan9495.

Re: ECU scan software for free
 

Well, if nobody wants a copy, then I will take my time with it.

Re: ECU scan software for free
 

Gary,
I would be real interested in your software but unfortunately I have the MEFI2 on my 7.4MPI engine. It is a very generous offer of your time and talent.
Steve

Re: ECU scan software for free
 

My scan program is ready to use and can be found here: https://www.mediafire.com/folder/57e...f51/MEFI3-Scan

In the same folder are also instructions in a readme file, some screen shots, a photo of the location of the scanner connection, and for those who would prefer to use something more well-known, there is an adx definition file for use with TunerProRT (also free). The readings on the screen shots may look odd, because the ecu was not connected to anything but a power supply at the time.

These will only work for the MEFI-3 module. If anyone has a ".adx" definition file for the MEFI-1, MEFI-2, or MEFI-4, I would appreciate a copy of the file.

Re: ECU scan software for free
 

Update:


In a few days I will have a scan version for the MEFI-4. A kind soul on the Malibu boat web site is beta testing it for me now. It's going very well.


I also have definitions for the MEFI-1 and MEFI-2. So if someone with either of those wants to do some testing, we can make that a reality also. I noticed Steve seemed to be interested (?).


I think it's pretty good software even if I say so myself ;-) And the price is good, free.

Re: ECU scan software for free
 

Hi Gary,
I am still interested. Let me know how I can help.


Sent from my XT1254 using Tapatalk

Re: ECU scan software for free
 

Steve,

First you will need a Windows Vista, 7, 8 or 10 pc close to the engine; laptop, notebook or tablet are best.
Second you will need a cable fro the pc to the diagnostic connector on the engine, it is a 10pin 'Opel" connector usually fastened near the ECM. There are no pre-made cables at a reasonable price, so you will have to make one.

Here are the parts:
Connector: https://www.mouser.com/ProductDetail/829-12045808
Pins for connector (2 minimum): https://www.mouser.com/ProductDetail/829-12045773
Cable: https://www.mouser.com/ProductDetail...DpPMdam%2fwe00

Cut off 6-pin connector (NOT USB end !) from FTDI cable

Connect black wire to pin A (ground) of the 10-pin “Opel” connector. I recommend soldering the wires.

Update: you will need a small diode to add inline to the orange wire, Put the cathode end of the diode toward the end with the USB connector. See a later post for a photo.

Connect yellow and orange wires to pin G (data) of the 10-pin “Opel” connector
(These need to be the wires from the TXD and RXD terminals on the USB end. Some cables use white and green instead. You may be able to pry off the cover at the USB end to see them)

You do not need all the strain relief and water seals for this connector.


Once you have the cable made, I may be ready with the trial version. You can try it on the engine with the ignition on but engine not running. Later, after the program is farther along, you would need to run it with the engine running. The boat does not have to be in the water. In all cases, I will need you to send me the log file(s). We can communicate via email directly if you prefer.

This version of my program will be free to use with no annoying nag screens, advertisements or other encumbrances. But the pc you use to get this program must be able to allow downloads of an exe file.

In the attached diagram, do not connect pins A and B as shown. That is only used to initiate trouble code flashing and cannot be done while scanning normally.

Thanks

Gary

Re: ECU scan software for free
 

MEFI4.exe beta version 013 is available here:
http://www.mediafire.com/file/b6r9np...MEFI4.exe/file

Re: ECU scan software for free
 

Four downloads and nobody has any feedback about whether it works for you or not?

Re: ECU scan software for free
 

Gary,

My cable is ready. Have you had a chance to work on the program? Let me know next steps.

Re: ECU scan software for free
 

Hi Steve,

I will be working on the MEFI2 program this weekend and may have something to test early next week. It will involve collecting a log file while running the program, which will NOT yet work properly for the mefi2. I just need to get the data before plugging in all the info for the mefi2.


In the meantime, you can install the drivers needed for the cable, Your pc should download and install the drivers automatically if it has an internet connection. If it doesn't, let me know,

Thanks
Gary

Re: ECU scan software for free
 

Came down with some flu-like symptoms today so this may take a little longer, but it will get done.

Re: ECU scan software for free
 

Feel better. Have to take a business trip this week then away for a week on vacation. Will not be able to get to it until late July.

Sent from my XT1254 using Tapatalk

Re: ECU scan software for free
 

The MEFI2 scan program is ready to try: http://www.mediafire.com/file/zb1b02...MEFI2.zip/file

It is an ".exe" file and your pc will probably warn you seriously about trusting it. You can select "run anyway" or something similar depending on the operating system and/or antivirus protection installed..

I have found that some cables need to have a small low-power silicon diode added to the cable. It goes in the orange (TXD) wire with the anode end toward the ECM connector end. Any small diode will work, I used a 1n4001 type. Without the diode, many cables will not connect.

Your pc will need to have Microsoft .Net Framework installed, ver 4.0 or later. Most newer pcs already have it installed, but if not, you can download it for free from Microsoft.

To test the software, the ignition must be on, but the engine does not have to be running yet. After we confirm operation, we can talk about some data collection with the engine running later.

You will need o determine what virtual serial port (Comx) is used by the cable. To do that, start the program without the cable attached. Note which Com ports, if any, are listed in the program's Com Port drop down selection box. Stop the program and plug the cable into the pc. Then restart the program and note the Com port number that is added to the list. You will select that one in the program. Connect the other end of the cable to the connector on the engine and turn on the ignition switch. Click on Connect and data numbers should appear in the engine tab screen boxes. If not, we can troubleshoot that. If they appear, you can click on Scan and see live data. About the only useful thing that you can see with the engine not running is the throttle position. You can move the throttle and see the changes for that.


Thanks

Re: ECU scan software for free
 

I have downloaded your scanner. Do you think it will work on a Crusader 8.1L MPI MEFI4b?
I have both OBD and DTC. Which would work best?

Re: ECU scan software for free
 

I downloaded the software. Thanks.
Will this work with Crusader 8.1L, MPI, MEFI4b?
Do you use the OBDII of DTC connector?

Re: ECU scan software for free
 

I do not know what version ecm you have. Is it an MEFI4? or 3 or 2?
If you see a 16-pin OBD2 connector, then it probably will not work. The connector must be a 10-pin version as described above. And you need to make a special cable just for the MEFI ecm's.

Re: ECU scan software for free
 

Your software works great on 2004 Crusader 8.1L with MEFI4b. Your software is smoother to set up than the many of the other options. Thank you for your work and offering this as freeware.

Re: ECU scan software for free
 

Since you are a spammer, I assume you haven't realized this is a boating forum....

Re: ECU scan software for free
 

No it's not OBD2. It is OBD1.
I am replying with a new account because my old one does not work
GaryDoug