No start no crank security light on

coming from one of the relays is what I meant.

Hi,

Does the starter engage and the engine not start? Or, does the starter do nothing?

I also need to confirm where your brother saw the spark. Was it at the starter itself? If so, it could have blown fuse 9 in the under the hood fuse box. See the attached pic. I circled the fuse I need you to check. Also, if the fuse is good, I need you to check for power to the brown wire (smaller one) on the starter itself. That wire will only have power when the key is in the start position, so you will need a helper.

Here is a link that shows how to check a starter. You may find it helpful.

https://www.2carpros.com/articles/starter-not-working-repair

Pic 2 shows the fuse location. In addition to just checking the fuse, confirm there is power to it and from it. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

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Let me know if this helps or if you have other questions.

Take care,
Joe