It must be in the fuse/relay box in the engine compartment next to the driver's side fender.
Horns generally can not be repaired but replaced. On a 2001 Mitsubishi Eclipse the horn is located inside the front bumper. To replace it disconnect the mounting bolts and remove it. Replace with a new horn.
How do you disable the horn on a 2006 Mitsubishi Eclipse?
Check the fuse and horn relay.
you need to replace you horn it is bad
in the fuse box
in the fuse box under the hood it will be listed on the fusebox cover to witch slot it falls under.
check the horn relay or the horn itself!
The horn relay on a 2001 Dodge Ram 1500 is located in the engine compartment year the firewall. It provides power to operate and control the horn.
#26 20A* Horn relay, Horns
In front at the left hand side. below the front bumper.
The horn relay on a 2001 Ford Expedition is located on the RPO Relay Block 1. You can find this relay block under the dash just above the passenger-side air bag.
Starter relay