If it is the security system that is the problem then when you jump the starter your vehicle still wouldn't start because the spark plugs and the fuel injectors would not work from the security system. It would just crank and that's it. No the problem is going to be an open in the circuit somewhere in between the battery and the starter. In the diagrams down below I have included a wiring diagram of your vehicle's starting circuit and instructions on how to find an open in any electrical circuit.I have highlighted all the sections of the circuit to check for you as well. It will require you to use a multi-meter and here is a link for you if you are unfamiliar with how to use one:
Please go through these guides, find the open in the circuit, and report back here to us with where it was, please.
Images (Click to enlarge)
Tuesday, June 25th, 2019 AT 1:16 AM