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Old 06-21-2012, 09:25 PM   #1 (permalink)
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Unhappy Horn Doesn't Work!

Hey guys this is my first time posting so take it easy on me. I have a 2004 SE and the horn suddenly stopped working yesterday. It doesn't work when I lock it or hit the panic button either. The fuse is good so I don't know what to do next. Any ideas or help would be greatly appreciated!
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Old 06-21-2012, 11:43 PM   #2 (permalink)
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Just to confirm you checked fuse #38 (15A) under the dash, it was good, and the horn still doesn't work? It might possibly be a ground issue. Make sure you're getting 12V on both sides of the fuse with it in.
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Old 06-22-2012, 09:35 AM   #3 (permalink)
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When i got my 03 Sable, both of my horns were dead.
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Old 06-22-2012, 11:08 AM   #4 (permalink)
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Just to confirm you checked fuse #38 (15A) under the dash, it was good, and the horn still doesn't work? It might possibly be a ground issue. Make sure you're getting 12V on both sides of the fuse with it in.
Yes that is the fuse I checked and it was still good. How do I see if I'm getting 12v on both sides of the fuse? Sorry I'm only 17 and I'm still learning.
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Old 06-22-2012, 05:38 PM   #5 (permalink)
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Yes that is the fuse I checked and it was still good. How do I see if I'm getting 12v on both sides of the fuse? Sorry I'm only 17 and I'm still learning.
If you have a test light, clip the wire on a ground (neg battery terminal) and touch the two little metal posts on top of the fuse. If the fuse is good, the test light should light on both sides. You can also do the same test with a voltmeter.
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Old 06-22-2012, 09:50 PM   #6 (permalink)
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I just remembered that when I was disconnecting the battery to do some work on the radio, I knocked off the little black box next to the battery. I believe that houses the relays for the horn. Could one of the relays have been messed up when I hit it? If so how would I test the relays?
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Old 06-22-2012, 10:27 PM   #7 (permalink)
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Nope, the horn relay is inside the smart junction box (SJB ) under the dash. It's integrated into the SJB, so it's non user replaceable. It's more likely you did something to the SJB wiring or the ground under the dash when you were messing with the radio. Best way to troubleshoot is to check for power and ground at the horns.
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Old 06-22-2012, 11:09 PM   #8 (permalink)
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Nope, the horn relay is inside the smart junction box (SJB ) under the dash. It's integrated into the SJB, so it's non user replaceable. It's more likely you did something to the SJB wiring or the ground under the dash when you were messing with the radio. Best way to troubleshoot is to check for power and ground at the horns.
Alright thanks for your help!
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Old 08-19-2013, 12:17 PM   #9 (permalink)
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I have an 04 sel and the horn stopped working yesterday ..... Actually they stopped working halfway through the blast when you're locking the doors. I have checked #38 fuse and the horns, both were in working order. When I hit the horn pad I do hear a clicking sound inside but nothing outside.
What next?
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Old 08-19-2013, 01:09 PM   #10 (permalink)
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You do hear a click when you press the horn?

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