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1991 f250 460 4x4 horn does not work why?

Horn does not work

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Why won't my horn work on my 1991 jeep cherokee laredo?


the horn is simple , a horn a relay and switch, and fuse 15?.

but is complex by other factors.

1: the clock spring . no air bags in 1991, so very easy.



there are 2 ways to diagnose any horn..

1: hot wire it, does it now honk? if yes, hot wire the relay does it honk now?

2: or use any voltmeter ever made and find out why.



#2 is the save way.



id hot wire the horn and make sure that 1991 ground bolt

mount is really still at ground potential. id bet that bolt has

long sense rusted, and is useless, like most are by now.



the fuse and relay are both in the PDC

the PDC means, engine bay fuse box in gringo. (non jargon)

http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

here is 93 for free.

see horn page one and the 2 tests.

or see the schematic.

at there, see the fuse box see fuse 15 (PDC 15?)

same chapter, see PDF page 90 (sheet33)



as you can see if the fuse is good.

12vdc arrives at the Horn relay on 2 pins.

if the horn switch works the relay ENERGIZES (closes)

and 12vdc arrives at the horn, and it honks

if while honking, the horn casing is 12vdc,

then means the horn is no longer grounded, a common happenstance.



if the relay dont energize check the horn ring contacts or connectors to it for continuity.

the relay can be tested, in the car.

like this.

honking

pin 2 and 5 are 12v

pin 1 = 0 volts

pin 4 is 12v, if 0v the relay is bad.



easy huh., ?

May 14, 2014 | 1991 Jeep Cherokee Briarwood

1 Answer

1991 Toyota Tercel horn doesn't work?


Use your middle finger.
Or, do you hear a relay click when you press the horn button? May be the relay went bad (dirty contacts inside). Or possible lost connection behind the horn button.

Sep 02, 2011 | 1991 Toyota Tercel

1 Answer

I HAVE A 1991 SPEEDOMETER AND ODOMETER DOES NOT WORK . WHAT COULD BE THE PROBLEM? DO I HAVE A CABLE OR SENSOR? ALSO MY HORN DOES NOT BLOW WHAT DO I NEED TO CHECK FOR? BOTH WERE EXISTING PROBLEMS WHEN I...


No cable. It has a vehicle speed sensor. Sounds like it is bad. Check for power at the horn with a test light when someone presses the horn pad. The horn might just be bad.

Oct 13, 2010 | 1991 GMC Sonoma

1 Answer

1991 ford 250 horn doesn't work can't figure out


First, hook a test light to the power wire on the horn, push the horn button, and see if you have power there. If you have power, the problem is the horn itself. Maybe even run a jumper wire to the horn, and see if it will blow. Sometimes with these older trucks, it just as easy to change the whole steering column as it is to find the problem. (if you can get a column from an auto wrecker cheap) It will likely be a broken wire in the column somewhere, ususally near where it tilts.

Mar 14, 2010 | 1991 Ford F250

1 Answer

Horn does not work. Fuse good, horn and wiring


RF of engine compartment under hood, behind headlights.

Oct 15, 2009 | 1991 Oldsmobile Cutlass Supreme

1 Answer

Horn quit working


A test light is great for testing all fuses without pulling 1 by one. $5-$10 at autoparts or hardware store, will save you tons of aggravation in the end, and you'll always have it for later use.

Feb 26, 2009 | 1991 Plymouth Grand Voyager

1 Answer

Horn does not work.


It could be the contacts in the steering wheel, or it could be the horn relay.

Jan 03, 2009 | 1991 Honda Accord

1 Answer

Horn not working on a 1991 ford escort


I replaced my horn the original horn just burns out. Get a new horn for the escort, they are much louder. You can just reach under the front passenger side of the car inside below the right headlight and slide your hand in to remove the nut that mounts the horn in. good luck

Sep 04, 2008 | 1991 Ford Escort

1 Answer

Horn not working


there should be a horn relay under the bonnet and check the wires on the horn it also might be in the switch its self

Sep 03, 2008 | 1991 Chevrolet Lumina

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