Horn won't work - 2001 Jeep Grand Cherokee

I go through many different steps in troubleshooting the horn on a 2004 Toyota Sienna on this webpage: John Fixes Stuff Horn Won Work How to Troubleshoot The Horn on 2004 2010...

Most likely the horn itself ,need to put a test light at the
horn power wire , if the light lights when the horn is pushed
it is the horn.

Sounds like the problem is in the horn pad if it works with the alarm.

on 1987 all you mentioned are on same fuse #11 located in fuse box below steering wheel 3rd row 3rd fuse from left next to either a blank space if you do not have power windows,or next to silver circuit breaker if you do have power windows.

ensure there is power to the horn with the aid of a friend if so horn is defective. if not you will have to remove the steering wheel and check for connectionsthere

Trace where horn is and place multi meter on dc and connect to horn connector then press horn and see if voltage appears if so its your horn if not its possible your s-wheel or stalk connection. Hope this helps

You can unplug the connector on the horn. The horn is located behind the front bumper cover on the right side of the car.

if the steering wheel clicks when you push on the horn then the wiring from the horn pad out to the horn is good.if it clicked before you replaced the parts then you didn`t have to replace them.check the horn at the horn,with someone pushing on the horn pad tap the horn to see if it will try to work if so then the horn needs to be replaced if not then run a power wire from the battery positive to the connector at the horn if the horn works again the horn needs replacing.

If it's clicking then more likely the relay is OK and the horn is dead.

Try a pair of wires from the battery and directly onto the horn. Either the horn won't work, demonstrating that it is faulty, or it WILL work, demonstrating that the relay is faulty

Maybe horn became unplugged. Put 12 v power to horn make sure horn works. Put test light on terminal on horn have someone press the horn button, if light comes on and horn does not blow you may need new horn. if light does not come on you may have bad contact at horn button, blown fuse, broken wire, bad horn relay or possibly just a bad ground.