It's fuse number 27 in the SC panel, left side of the dash. Now, I attached the wiring schematic below for the horn circuit. There are a few things that can cause it to fail, a clock spring, steering wheel control module, and so on. Here is what I need you to do.
First, check fuse 27 in the vehicle. It is a 1-amp fuse, so make sure you check it closely. In addition to checking the fuse, confirm there is power to it. Here is a link you may find helpful:
If you find that both fuses are good, you should have the can-bus scanned to see if there are codes related to the issue. CAN stands for controller area network. Basically, all modules are tied together via a few wires and communicated with each other. This type of scan will retrieve codes regardless of the module storing them. Here is a link that shows how it's done.
Let me know if this helps. Also, let me know if you have other questions.
See pics below.
Images (Click to enlarge)
Monday, January 10th, 2022 AT 8:22 PM