1997 - 2003 F-150

Horn not working...

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Old May 17, 2010 | 04:01 PM
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fordmatt21's Avatar
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Horn not working...

Hey guys, having a little problem with my 01 XLT. The horn will not sound when the button on the steering wheel is pressed but it will go off when I lock the truck. Had a dealer tech take a look when he was performing the cruise control recall but he couldn't find anything, any ideas?
 
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Old May 17, 2010 | 06:18 PM
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Maybe the connection inside the steering wheel has come loose? I don't know much about steering wheels but that seems like a possible issue.
 
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Old May 18, 2010 | 04:42 PM
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Yeah I was hoping that wasn't the issue because I do not want to go looking the steering wheel because of the airbag, I was just wondering if this was a common issue with these trucks that had an easy diagnosis or fix.
 
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Old May 18, 2010 | 05:02 PM
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Originally Posted by fordmatt21
Yeah I was hoping that wasn't the issue because I do not want to go looking the steering wheel because of the airbag, I was just wondering if this was a common issue with these trucks that had an easy diagnosis or fix.
PM your email, I'll send diagnostics. Since it's right here in front of me.
 
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Old May 18, 2010 | 05:12 PM
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Originally Posted by jbrew
PM your email, I'll send diagnostics. Since it's right here in front of me.
Jbrew, would you mind sending me diagnostics also. I am having a horn problem except mine does not come on at all.

Thanks,

John
 
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Old May 18, 2010 | 09:23 PM
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Sent it
 
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Old May 18, 2010 | 09:54 PM
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I think the horn (from steering wheel) goes though the clock spring for the airbag. I'd say check there
 
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Old May 19, 2010 | 10:55 PM
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Any answers for horns that sounds right when locked, but only one horn beeps when the horn button is pressed? I get strange looks when my high tone horn only beeps...

Jbrew, I'll send you a PM if your info will help.
 

Last edited by a930rocket; May 19, 2010 at 11:00 PM.
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Old May 19, 2010 | 11:47 PM
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Originally Posted by jbrew
PM your email, I'll send diagnostics. Since it's right here in front of me.
Please send to m_sells@sbcglobal.net, I'm still a noob around here so I can't send PM's yet. Thank you for the help though, it's much appreciated.
 
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Old May 26, 2010 | 03:00 PM
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Bump up. Can anyone get a a hold of jbrew for me so I can get those diagnostics?
 
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Old May 26, 2010 | 03:07 PM
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Originally Posted by fordmatt21
Hey guys, having a little problem with my 01 XLT. The horn will not sound when the button on the steering wheel is pressed but it will go off when I lock the truck. Had a dealer tech take a look when he was performing the cruise control recall but he couldn't find anything, any ideas?
Is there a fuse for the horn? I think it shares a fuse with something else if I remember right or....

Use your middle finger and playground voice. Works for me.
 
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Old May 26, 2010 | 03:58 PM
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Haven't checked the fuses, mostly because the horn still sounds when I lock the truck so I feel like that wouldn't be the issue. Unless the button is on a different fuse than the horns themselves, I guess I'll check that out.
 
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Old May 26, 2010 | 04:17 PM
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This is word for word from the manual.

Horn:
Note: check the fuses before beginning electrical diagnosis.

At step 3 it sais
If the horn does sound, check for voltage at the terminal when the horn button is depressed. (terminals are on the horn) If there is voltage on the terminal, check for bad ground.
4. If there is no voltage at the horn check the relay. Note that most horn relays are either the four terminal or externally grounded three terminal type.
5. If the relay is OK, check for voltage to the relay power and control circuits. If either of the circuits is not receiving voltage, inspect the wiring between the relay and the fuse panel.
6. If both relay circuits are receiving voltage, depress the horn button and check the circuit from the relay to the horn button for continuity to ground. If there's no continuity, check the circuit for an open. If there's no open circuit, replace the horn button.
7. If there is continuity to the ground through the horn button, check for an open or short in the circuit from the relay to the horn.

Working on finding the fuse layout and relay for the horn
 

Last edited by Toyz; May 26, 2010 at 04:22 PM.
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Old May 26, 2010 | 04:55 PM
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Checked fuses and relays, all are good. Also checked for voltage at the horns and they are getting power. Thanks for the tips Toyz, I'll give them a shot later.
 
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Old May 27, 2010 | 11:20 AM
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I had the same problem, fixed it with a new clock spring
 
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