I HAVE STRIPED THE STEERING AND CHECKED THE VOLTAGE AT BOTH ENDS READING 12VOLTS, THE HORN WORKS DIRECT TO THE BATTERY, HOWEVER WHEN THE HORN IS PRESED THEIR IS A CLICKING NOSE COMING FROM THE RELAY UNDER THE SEAT.
PLEASE CAN YOU HELP ME.
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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.
The motor is either stripped internally or the track has broken. The only way to verify which is the cause is to take the panel off the door. If the window is stuck in a position other then all the way down it is most likely a striped motor.
Need to check the fuse and relay that the horn is on, otherwise it's the contacts and you will need to take apart the steering wheel to clean or replace. You must be careful due to airbags, best to disconnect the battery.
hot wire the horn direct to the battery to check the horn. If it works check the relay if you know how to do that. A green wire should be there connected towards the steering column. Test the voltage output from that wire when someone presses the horn pad. If no readings shows on the volt meter the relay is at fault. If 12 volts show as a reading the horn contacts are bad
It might be the switch in the steering wheel, to find out for sure, take a piece of wire long enough to reach the horn from the battery,
hook one end to the positive terminal of battery, touch the wire connection at the horn with the other end, if it blows, the switch in the steering wheel is bad. ( be careful not to touch any metal parts with the wire, you will get sparks).
The wiring loom that runs down the front near the radiator and intercooler is prone to rubbing and corroding and shorting out. Check this loom.
If it is in bad shape i'd recommend replacement as the turbo boost sensor wiring and some of the headlamp wiring is in this loom also, and these can cause costly problems and cause the turbo to fail if not replaced.
Try using a 12volt jumper wire directly to the horn from the car battery. also check the ground on the horn. The last thing I would do is pull the steering wheel cover. Make sure the horn is blowing first.