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The horn is in front of the grill and radiator on the drivers side it is a black disk.
The relay is int the engine compartment on the drivers side in relay/fuse-box. The name "Horn" should be on the fuse-box lid to identify what relay is needed.
Question: Is your horn only sounding at certain steering wheel positions? If so the problem the brass contact plunger in back of the steering wheel is worn out. You can buy a kit with the ring and plunger to fix that.
Will the horn sound when you press on the horn button? Sometimes fuses, or relays in the electrical system fail. If no horn sounds when you want it too, check the under hood fuse block, or interior fuse panel. Normally on the back cover of these two places identifies which fuse or relay works what. Check horn fuse to see if it's blown first,than have the relay tested. Just basic info, but it's where I would start.
Depending on the vehicle (not clear of your exact vehicle), its either equipped with a horn fuse, a horn relay, or both. If you don't have the owners manual readily available, the fuse block may identify each fuse, and the same for the relay.
Do you get a click when you press the button? The relay should be audibly clicking if it's working.
If it is clicking then I'd check the horn itself, might be bad or have loose connection. If no clicking sound at all then I'd suspect bad relay or fuse (if it has a dedicated one), also possibly bad switch.
Most vehicles have a horn relay, which should be in a fuse box under the hood. Toyota is usually pretty good at identifying the various relays and fuses in the fuse box. If your original horn was shorted, it very well could have welded the contacts in the horn relay together. Also an aftermarket horn could be drawing more amperage than an original equipment unit, causing the fuse to burn. This last statement is purely conjecture.
I am assuming you have checked the Fuse Box under the hood for the Horn Fuse and / or the Horn Relay and made sure both are good?
You can always try the steps outlined in this video to replace the horn pad. to see if this is your issue if you have exhausted all of your other resources.
Or You can try these steps to further diagnose your issues:
The horn relay on ZX2's is located underneath the dashboard on the
drivers side. There are several relays located there - identify the horn
relay by the "clicking" sound it makes when the horn is pressed. The
likelyhood that you have a bad relay is minimal. Start by checking the
horn fuse (the fuse box is located under the dash on the driver side).
Next, check the relay. If the relay is making a clicking noise, it is
probably OK. The next thing to check is the horn itself. it is located
on the passenger side of the vehicle, up underneath the front bumber.
Most instructions say to remove the bumber cover to get to the horn, but
this is not neccesary. In my experience with Escort horn problems, the
problem has been with the horn "switch", a wafer thin piece of plastic
that lies between the steering wheel cover and the airbag assembly.
Below are instructions for replacement of this switch - don't be
intimidted by the procedure - it is not difficult.
You cannot buy a horn switch at a dealer - they tell you that the horn
switch is part of the airbag assembly, which cost $450 plus.
Understandably, Ford doesn't want people "messing around" with airbags.
Go to a junk yard - you can eazily find and remove the horn switch from
an Escort who's airbags have already deployed. I bought two of them for
$5. Identify and remove the junkyard horn switch by reading step 7
below. This is an eazy fix if you follow these instructions. Should take
about 10 minutes. I replaced my "stuck" 97 Escort horn switch as
1) Disconnect negative battery cable, wait for at least 1/2 hour for
residual power discharge before proceeding to net step (IMPORTANT!).
This will disable the airbag. Neglecting this step could cause serious
injury or death!
2) Remove two 10mm bolts directly behind the steering wheel - one on left, one on right. These secure the airbag unit.
3) carefully lift the airbag unit out of the steering wheel.
4) remove two small star-screws at bottom of airbag unit using star end
screw driver - the horn wires enter the airbag unit next to these screws
5) pry the airbag cover (this is the front part of the steering wheel
cover with the horn picture on it) off of the plastic tabs of the airbag
unit, on the left & right sides - should come off very eazily.
6) now you can lift the airbag cover up (there are three rivets that continue to hold the top portion of the cover in place)
7) the horn switch, which is covered by a thin layer of dark foam, is a
very thin plastic pad with two wires coming out (same wires as step 4).
You can see wafer thin copper strips inside the plastic. The switch is
held in place by three small plastic tabs. Remove the switch and
disconnect the wires at the red connector inside the steering wheel.
8) replace horn switch with junkyard switch
9) re-assembly is the reverse of the removal.
This procedure should apply to 97 through 2002 Escorts, including the ZX2. Hope this helps someone save some money.
Refer to your owners manual for fuse identification and location. Pull out horn fuse, that will shut horn off. Next if you wish to repair problem, you need to find out what is shorting out. Most likely it is your horn pad/airbag steering wheel. IF you need more assistance let me know.
There are a couple of relay locations. There is one in the engine compartment located on the left inner fender. You will have to remove a cover to see the fuses and relays. I believe there is another panel with some relays inside the cab on the firewall behind the foot pedals on the left. Again you will have to remove a cover to see them. Not sure where the horn relay is located. If you still have your owners manual it should identify all of the fuses and relays. They are easy to replace, you just pull them out like a fuse and put a new one in. Use a test light if you have one to see if you have voltage at the horn when the horn button is pushed and check any grounds your horn might have. If you have voltage at the horn maybe the new horn is bad also. That can happen.