Horn not working

Yes there is a fuse for the horn in the TIPM here are three guides that will help you run some simple tests to find out what the problem is. Check for power at the horn first in case the horn itself is bad which is common.

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

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

See where you lose power at. Check the clock spring connections

https://www.2carpros.com/articles/how-to-check-wiring

and if found to be bad

https://www.2carpros.com/articles/steering-wheel-clock-spring-removal

Please let us know what you find.

Cheers, Ken