How to Data Log a MEMS3 ECU

Download Link: https://andrewrevill.co.uk/Downloads/MEMSTools.zip

Instructions for getting started with MEMS Mapper and data logging a MEMS3 ECU.

NB: I no longer generally supply the mini CD when I sell cables. The CDs come with the cables when I buy them, but lately I have sometimes found them to contain unnecessary or confusing VAG software tools and/or potentially unwanted or damaging programs. So I now remove the CDs for your protection and supply these instructions which guide you through the process of downloading and installing the software and drivers from my website, which is a much safer option. Please do not be concerned when there is no CD in the bag with the cable, everything you need can be downloaded for free online.

· Download MEMS Tools from the link at the top of this page. This will download a .ZIP file.

· Extract the .ZIP file into a new empty folder and the contents should look like this:

· For a MEMS3 EU3 ECU, you need to launch (double-click) the EU3 version of MEMS Mapper:

· You should then see a window that looks like this:

· Plug your cable into a USB port on your computer. You should see a popup like this, which tells you the COM port number that Windows has assigned to your cable:

· If you don’t see the popup, you may need to install drivers for the cable. There are options to do this on the menu in MEMS Mapper. If it’s a cable bought from me, you will need the CH340 driver. For other cables, you may need the FTDI driver instead. These menu items launch the chip manufacturer’s own driver installation program.

· Now select the COM port which Windows has assigned to your cable as shown here:

· Make sure you have to correct ECU type selected here:

· Click About ECU:

· If everything is set up correctly and you are connected to the ECU, you should see a box of information about the ECU like this:

· You are now ready to view Live Diagnostics, fault codes and to data log the ECU (record the Live Diagnostics data and save to a file).

· In MEMS Mapper, click into the Live Diagnostics tab:

· Here you can select which data measures you want to view and log. The more you select, the slower it will update, as it has more information to read each time around. By default everything will be selected to start with:

· Live data values will show here. At the moment they're all shown in grey, because it's not running and the values are not live / up to date:

· Fault codes will show here:

· To start displaying and recording live data, click here:

· It should then start showing live data values. It will also update the DTC fault codes about once every 10 seconds. The live data will updated about once a second with everything selected or faster with fewer measures selected. All of the values displayed are logged to memory in the background while it is running:

· When you've finished with Live Diagnostics, click Done here:

· You will then be asked whether you want to save the live data recorded:

· You can also save the live data or fault codes afterwards by clicking on one grid or the other, then clicking Save Live Data here: