Take a look at the wiring diagram below. This ECM/Fuel pump fuse is getting power directly from the battery junction block which is hot at all times. So if the fuse has no power then we need to perform a continuity check from the fuse to the battery junction block. More than likely you will just have to run a new wire to the fuse terminal and that will re-establish the power to the fuse.
https://www.2carpros.com/articles/how-to-check-wiring
Please see the diagram below. Let us know if you have other questions. Thanks
Jul 5, 2021 at 7:00 PM