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My 2008 pathfinder horn doesnt work when i press on it,ive changed the fuse,the relay & even the horn but it still doesnt work, but it does work when i remotely lock my truck(which tells me the horn work)but not when i press on the steering wheel help please i live in memphis & I GOTA HAVE A HORN HERE LOL
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Check to see if there is 12 volts at the horn positive connection when someone pushes the horn button on the steering wheel. If there is voltage, and no sound, you need a new horn. If there is no voltage when the horn button is pressed, you need to troubleshoot the rest of the electrical circuit. First look in your fuse box for a blown horn fuse. Then try replacing the horn relay.
1st check you have power at the horn unit (normaly behind bumper) if power there it must be the horn itself. If no power you need to check the horn relay & contact behind the steering wheel cover. When yu press the horn do yu hear the relay click?
if you check the wire that comes from the horn button to the relay for voltage when the horn is pushed and have voltage then you have a bad relay,if not then you probably have bad contacts in the horn pad area or even the clock spring itself.
Start by having someone press the horn while you feel the relay with your finger. If the relay clicks when the horn is pressed then the switch is working properly and your problem is between the relay and horn assembly.
This wold indicate that you have a shorted horn circuit. Generally, the horn circuit has a negative contact at the steering wheel, meaning when you push the button, it grounds (-) the sysem causing the relay out in the engine compartment area to provide 12V (+) directly to the horn. If nothing else causes the fuse to blow, the pwr window/sunroof., then either the relay itself is shorting out or a wire to the horn is grounding, or you have a bad horn. (spend a few fuses & save time, unplug the relay, replace the fuse & press the horn button & see if the fuse blows. Next, plug in the relay & do the same for the horn)
Generally it won't be the wire from the horn button or the horn would be working continually. Your owners manual should tell you where the relay is & you could see if you notice any unusual appearance to the case, as well as following the wiring from there to the horn, to see if any damage is apparent. IE: if the horn is located in the front grill area or near a opening in the fenderwell, does it appear a rock or something has hit it or any wiring causing damage. With a vehicle as new as yours, if it isn't obvious damage, I would suspect the relay. good luck
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