I have dumped all console commands in my master console command list. Learning console commands is incredibly important to mod design as it will save you tons of time, even with the limited set of commands we have. pcc files guide if you want to understand more about this. In ME3Explorer you can see this in the script tab of exports with a flag named Exec. In game package files, console commands are denoted by setting the Exec flag in the export flags.
If you want to remap these keys, you can modify the basegame coaelsced file's BioInput and change TypeKey and ConsoleKey under nsole. You can now open the console using Tab or ~. Installation of this is as simple as installing any mod in Mod Manager or choosing the option from the tools menu in Mod Manager. The ASI version allows you to load more dlls (renamed as ASI) and disables the certificate check for multiplayer communication to EA's Blaze backend.
It patches the game executable's memory, enabling the full console (by default console is locked to SP), as well as enabling modified DLC to load. The Binkw32 bypass dll hijacks the bink video library dll to force it to run our code before it loads at game startup. In order to access the console, you will need to enable access to it. BioWare tried to hide the console but it was easily found by several people. It is very useful for debugging, and nearly every Unreal Engine 3 game has one, though if is accessable in shipping builds of software is up to the developer. Mass Effect 3 is built on Unreal Engine 3, which means it has a console that you can access in game and type commands into. This guide is for informational and educational purposes only.
ME3Tweaks does not condone cheating in online multiplayer.