ASR relay shuts the truck off

This happens when the oxygen sensor heaters/or fuel injectors have too much resistance, but it could be a bad ground as well. Here are the engine/ASD wiring diagrams so you can check it out, here is a guide so you can test the individual resistance of the sensor and injectors:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.