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My horn works occassionaly,i can hear relay click,fuse is good.replaced horn circuit under air bag.still can't get horn to work.need state insp.this month.help!!

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You need to check the horn itself


check all wiring inside engine compartment

look for breaks and burns and stripped wiring.

Posted on Mar 21, 2011

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Hello Victor

If you can hear the relay click the problem is
1. Bad relay
2. Wire from relay to horn
3.bad horn
4.poor ground at horn.

If the relay clicks the fuse is good as it powers both sides of the relay.

The horn is mounted to the outside of the right hand front skid plate.
You will need to remove the lower fascia to access it.
my horn works occassionaly,i can - kiltylake_235.gif


Here is a wiring diagram.
kiltylake_234.gif


If you would like further assistance with your problem, ask me here in a comment.
Thank you for using FixYa.
KL

Posted on Mar 22, 2011

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1 Answer

How do I fix the horn on 2006 Impala


System Description
The horn PCB relay is non replaceable ,soldered to the underhood fuse / relay box. . You would have to take the box a part to get at it . Is the air bag light lit on the instrument cluster ? Could have an open wire in the Clock spring , do you know what a clock spring is ? It is inside the upper part of the steering column , It allows the steering wheel to be turned full right to full left keeping the horn an all the buttons an air bag connected electrically. When the horn button is pressed, ground is applied through the horn switch contacts and the horn relay control circuit to the coil side of the relay. The horn relay coil is then energized, causing the relay switch contacts to close applying voltage through the horn control circuit to the horns. For theft deterrent functions, the body control module (BCM) also controls the horn relay by applying ground to the relay control circuit to the relay.
Circuit/System Testing
With a test lamp connected to ground, probe each of the test points on the HORN fuse while activating the horns. The test lamp should illuminate at one or both of the fuse test points.
?‡'
If the test lamp does not illuminate at either test point, refer to the Horn Switch Test.


?‡'
If the test lamp illuminates, refer to the Horn Test.


Ignition OFF, disconnect the inline harness connector C275. Ignition ON, test for B+ between the horn relay control circuit terminal B and ground.
?‡'
If less than B+, test the control circuit for an open/high resistance. If the circuit tests normal, replace the underhood fuse block.

Momentarily connect a 3-A fused jumper wire between the control circuit terminal B and ground. The horns should work.
?‡'
If the horns do not work, replace the underhood fuse block.

If all circuits test normal, test or replace the horn switch

The PCB relay horn system consists of the following components:
?€¢
Horn switch

?€¢
Horn PCB relay

?€¢
Horn assembly

?€¢
Body control module (BCM)

?€¢
HORN fuse 15 A

How cars clock spring works

May 17, 2016 | 2006 Chevrolet Impala

1 Answer

Horn does not hoot


Have someone listen under the hood for the sound of a clicking relay as someone actuates the horn ring. Remember if the horn does blow you might scare the listener!!!

If no click check for the under hood relay. If relay not activating check the horn ring. Some times adjacent relays have same pin out/part number. Swap relay and try. Many of the cars use a "clock spring" design on the wheel. Problem air bag circuit makes it difficult to service. Check to make sure all other services are working attached to the wheel (Speed control, radio,etc). If clock spring is failing eventually other circuits would be affected.

If you have key-less entry and have a horn beep confirmation try the FOB. No beep than maybe horn clock spring OK! In no horn beep confirmation try the panic on the FOB. That should make a little noise, and if nothing else you can check your lights.
Ck the fuse if OK
Hot wire horn if still no horn
Replace Horn

Dec 03, 2015 | Peugeot 308 Cars & Trucks

1 Answer

Why isn't the horn working?


What is year--make--model? Check applicable fuses, check wiring circuit in steering column. Have to disarm air bag where applicable, before fooling with steering column.

The relay circuits need voltage and ground, w/o more info I can't look up the wiring diagram.

Jul 24, 2015 | Cars & Trucks

3 Answers

I have a 1998 chrysler concorde. The airbag light on the dash stays on and my horn doesnt work. How do i fix this without costing me tons of money?


Could be a wiring problem or the clockspring in the steering column.
You would need to pull the steering wheel and test the circuits.

Mar 26, 2015 | Chrysler Cars & Trucks

1 Answer

Horn on 2005 Prius only work with key.


Check the Horn Relay (in fuse box under the hood). You will need to check for Circuit continuity between the Relay and the horn button. There must be a loose connection under the dashboard or in steering column. Pressing the Horn button Grounds the circuit, so check the circuit from the relay to the horn button for continuity to ground.

Sep 22, 2014 | 2005 Toyota Prius

1 Answer

How do you troubleshoot the horn


if your horns work with alarm using remote, then fuse and relay good if you hear no horn using remote set off alarm,and horn pad dont work, replace horn fuse and relay, if both okay, you have to replace the whole horn pad with air bag in steering wheel both horn control pads and airbag is one assembly.

Feb 11, 2012 | 1999 Pontiac Grand Prix

2 Answers

Horn want work


Check the horn itself by running a wire from the positive lead of the battery to the connection spade on the horn. If it works, you may have a bad horn relay or the problem may be in the steering column.
If you have air bags, DO NOT attempt to work on the column unless you exactly follow directions for that found in either haynes or chilton manuals. Otherwise, your air bag may deploy and hurt you.
If the air bag light on the dash is on, chances are that the "clock spring" in the column has failed.

Feb 20, 2011 | Jeep Comanche Cars & Trucks

1 Answer

I just bought a 2000 Saturn SL 4-dr sedan. It's in great shape, but the horn doesn't work and the dashboard light don't work. Is this a simple fix with replacing the fuses or dash light or is it a little...


Check fuse for horn and for dash lights. If the interior lights work then suspect dimmer switch for the dash lights. If you press the horn button do you hear a click under the hood or inside the car? If you do not then the fuse is blown and if the fuse is good then the relay may be suspected bad. If the fuse is good and the relay clicks then suspect the horn to be bad. If fuse is blown and you put a new one in and you push the horn and the fuse blows again, then disconnect the horn before replacing the fuse again. Then push the horn button and see if you hear the relay click if you hear a click the the horn is bad or wiring butmost likely the horn. If you have the horn unplugged and the fuse is good and you push thee horn button and no relay click suspect the horn button to be bad. Hope this helps.

Sep 06, 2010 | 2000 Saturn SL

2 Answers

Bought an 2004 honda accord and the horn does not work. What is the procedure for repairing this issue?


simple circuit, but can be hard if problem is switch in steering wheel. First check fuse and relay at fuse box. relay should click when horn button on wheel is pushed. If relay doesn't click, either button or relay is bad. If relay clicks, test for voltage at horn. You can use a simple test light available at the auto parts store if you don't have a voltmeter. If there is voltage at the horn, replace horn.
If relay does not click, replace relay to see if that fixes your problem. If new relay doesn't fix, you have a bad switch in the steering wheel or possibly bad wiring. cannot help you with switch as it's different on every car. any questions--let me know.

Sep 06, 2010 | 2004 Honda Accord

1 Answer

Would appreciate help for a Toyota Corolla 2007 non-working horn.


If the horn works with direct connection, and fuse, relay, and circuit breaker are all good, it's the switch in the steering wheel. If it is anything like the chrysler auto's, the switch and the air bag module is all one unit, can't replace just the switch, the whole thing, and it's about $700 to $800 for those units, at least it is here, and can only get them at a dealer.

Mar 24, 2009 | 2007 Toyota Corolla

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