If it starts cranking and then cuts out, it won't be a fuse. Chances are it is the intelligent power distribution module (IPDM). The starter relay is an integral part of the IPDM and is not serviceable. If you look at pic 1 below, you see the basic outline of how the starter works. Pics 2 and 3 are the wiring schematics. I highlighted the relay in pic 2.
Here is what I suggest. On the starter, there will be a smaller wire. It will be white with a red tracer. When the key is in the start position, it should have 12v. Have a helper turn the key and engage the starter while you check voltage to that wire. If the voltage stops, my first suspect is the IPDM. If power continues and the starter stops, the starter is my first suspect.
Here is a link you may find helpful:
Let me know what you find or if you have other questions.
Images (Click to enlarge)
Wednesday, July 7th, 2021 AT 10:01 PM