Horn stopped working
Thread Starter
Heel & Toe
Joined: Dec 2014
Posts: 17
Likes: 0
From: Denver, NC
Horn stopped working
I replaced the horn membrane 2 years ago and the horn stopped working again. I thought it might be the multi-purpose switch ( was having problems with right turn signal not lighting sometimes) so just replaced it. Still no luck. Tried switching relays and no luck. I jumped the horn and it works and works when I hit the fob. I would say that it is the membrane again, but when I connect a test light to the relay terminal, the battery positive and push the horn button it lights up. I assume that means the membrane is working and grounding like it should. Now it is hit and miss on lighting up, but I would think the horn would sound intermittently. Any ideas? I hate to replace the membrane and still no horn.
Thanks for any help!!
Thanks for any help!!
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,410
Likes: 3,964
From: Cape Coral, Florida
If the horn works with the FOB 90% of the circuit is good...right now I too have an inop horn but haven’t had time to diagnose it but I will in the next few days or week...mine also works with the FOB so I’m thinking MAYBE horn membrane but I don’t guess until I diagnose the circuit...maybe I’ll do a YouTube video...haven’t done one in a while.
Thread Starter
Heel & Toe
Joined: Dec 2014
Posts: 17
Likes: 0
From: Denver, NC
OK, I tested the #5 pin on the C209 connector under the steering column and if I ground it manually the horn honks. So if my logic is correct that means the circuit is good but the button isn't connecting the ground. Think I am going to go ahead order a horn membrane. Thoughts?
Thread Starter
Heel & Toe
Joined: Dec 2014
Posts: 17
Likes: 0
From: Denver, NC
FIXED! I already had the column apart so I went ahead and took the wheel apart. I removed the membrane and tested with a multimeter. Checked out fine. connected with clips to the wiring and horn worked when applying pressure to membrane. I put it back together and works. I am pretty sure the issue was the power wire to the cancel cam was loose. Glad I didn't order the membrane.
Here are the links to the reference that helped me disassemble and test the horn membrane. Great write ups.
https://www.corvetteforum.com/forums...brane-fix.html
https://tech.corvettecentral.com/201...rn-switch-fix/
Here are the links to the reference that helped me disassemble and test the horn membrane. Great write ups.
https://www.corvetteforum.com/forums...brane-fix.html
https://tech.corvettecentral.com/201...rn-switch-fix/
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,410
Likes: 3,964
From: Cape Coral, Florida
FIXED! I already had the column apart so I went ahead and took the wheel apart. I removed the membrane and tested with a multimeter. Checked out fine. connected with clips to the wiring and horn worked when applying pressure to membrane. I put it back together and works. I am pretty sure the issue was the power wire to the cancel cam was loose. Glad I didn't order the membrane.
Here are the links to the reference that helped me disassemble and test the horn membrane. Great write ups.
https://www.corvetteforum.com/forums...brane-fix.html
https://tech.corvettecentral.com/201...rn-switch-fix/
Here are the links to the reference that helped me disassemble and test the horn membrane. Great write ups.
https://www.corvetteforum.com/forums...brane-fix.html
https://tech.corvettecentral.com/201...rn-switch-fix/
Well today I finally got around to looking at my inop horn. Horn membrane had continuity with DVOM
when depressed..looked at the power wire and the end had a little oxidation...a little emery cloth and some Stabilant 122 and all is good !!
Last edited by C5 Diag; Nov 20, 2020 at 10:30 AM.
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Joined: Apr 2013
Posts: 5,021
Likes: 1,149
From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Last edited by Smoken1; Nov 20, 2020 at 05:02 PM.
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Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,410
Likes: 3,964
From: Cape Coral, Florida