Okay, just so we are on the same page I have included in the diagrams down below a wiring diagram of your vehicle's starting system. With an assistant cranking the ignition switch can you take a voltage reading for me of pin #87 of the Starter Relay in the Engine Compartment Fuse Relay Box. It should have a yellow wire with a light blue stripe on it going to the start motor. It will require you to use a multi-meter so I have included a link for you to go to below if you are unfamiliar with how to use one.
Please get this reading for us and let us know what you are able to find out. We will go from there.
Images (Click to enlarge)
Tuesday, May 14th, 2019 AT 3:45 PM