It is located in the Underhood Junction Box. I have included diagrams of the location, the Junction Box, as well as a callout for the Junction Box in the diagrams down below. Please go through these guides and get back to us with what you are able to find out.
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.