Hi,
That's a hard one to answer without knowing wire colors, how many are in the harness, and so on. When you listed everything, the first thing that came to mind was a knock sensor. However, I can't be sure.
If you look at the first pic below, it shows multiple electrical components on the engine. See if that helps.
Also, the remaining 12 pics are the wiring schematic for the entire powertrain management system. I highlighted the coils and injectors to help orient you. Check the wire colors in the harness and see if you can match them with the schematic.
Now, the pics I attached for the schematic had to be cut in half to make them readable. I did overlap them so you can follow from one to the next.
Here is a link you may find helpful when working with the wiring:
https://www.2carpros.com/articles/how-to-check-wiring
Let me know if this helps or if you have other questions.
Take care,
Joe
See pics below.
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Friday, September 17th, 2021 AT 10:18 PM