2011 Mazda 3 intermittent horn

[JTSR71]

I'm trying to fix a horn that works only intermittently on a 2011 Mazda 3.

When the horn is not working, I can hear the relay clicking.

So it would appear that the wiring somewhere between the fuse box and the horn is loose.

The fuse box and horn are located in front of the driver's side wheel.

I'm thinking of lifting the fuse box out to examine the wiring connection there. If all is well there then the next step is to expose the horn itself from underneath and check the wiring there.

Does this sound like the right approach?

 

[CharBaby]

Under Warranty?

 

[Trav]

Just check the voltage at the horn terminal while someone pushes the horn button.
Could be a bad ground, bad horn, relay contact going to the horn. Quick and easy job.