No horn 1990
Thread Starter
Safety Car
Joined: Apr 2002
Posts: 3,531
Likes: 1
From: Conroe TEXAS!
Cruise-In X Veteran
No horn 1990
Ive checked the fuse, swapped relays, and cleaned the contacts under the horn buttons. Used a test light and cant get power to the horns.
I recently had someone else work on the car for the first time, and they were under the dash(Booster)
Is there any connection coming out of the column that could have been disconnected?
My next step is to pull the airbag, I want to be sure I havent missed anything first.
Ideas?
I recently had someone else work on the car for the first time, and they were under the dash(Booster)
Is there any connection coming out of the column that could have been disconnected?
My next step is to pull the airbag, I want to be sure I havent missed anything first.
Ideas?
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 762
Ive checked the fuse, swapped relays, and cleaned the contacts under the horn buttons. Used a test light and cant get power to the horns.
I recently had someone else work on the car for the first time, and they were under the dash(Booster)
Is there any connection coming out of the column that could have been disconnected?
My next step is to pull the airbag, I want to be sure I havent missed anything first.
Ideas?
I recently had someone else work on the car for the first time, and they were under the dash(Booster)
Is there any connection coming out of the column that could have been disconnected?
My next step is to pull the airbag, I want to be sure I havent missed anything first.
Ideas?
if you need, I can post the circuit schematic and diagnostics chart....
Last edited by Joe C; Oct 17, 2017 at 06:22 AM.
Thread Starter
Safety Car
Joined: Apr 2002
Posts: 3,531
Likes: 1
From: Conroe TEXAS!
Cruise-In X Veteran
- if you do not have a FSM, get one. good luck --
if you need, I can post the circuit schematic and diagnostics chart....
if you need, I can post the circuit schematic and diagnostics chart....
Team Owner
Joined: Sep 2003
Posts: 25,330
Likes: 2,722
You don't mention attempting to power the horns directly to confirm they're actually functional. Have you? I believe that's the 1st check. It wouldn't be unusual for the horns to be NG(no good).
When was the last time you knew the horns to be functional?
The horn is grounded through a brush on the directional switch through the cancelling cam and a wire from the horn switches that you mention cleaning. It wouldn't be uncommon for the wire ferrule in the cancelling cam to fail or the tower on the cancelling cam to fail.
What did you check with the test light?
If after the brake booster replacement you have functional directional/flasher operation it's doubtful it's an under-dash issue your mechanic created.
The C204 Joe mentioned is the directional connector on the side of the column.
I'd suggest you actually look a little harder for the FSM - you should have 2 books - you could actually need both. You need book 2 for the electrical and book 1 could be helpful if you need to do cancelling cam, switch wire to cam etc.
When was the last time you knew the horns to be functional?
The horn is grounded through a brush on the directional switch through the cancelling cam and a wire from the horn switches that you mention cleaning. It wouldn't be uncommon for the wire ferrule in the cancelling cam to fail or the tower on the cancelling cam to fail.
What did you check with the test light?
If after the brake booster replacement you have functional directional/flasher operation it's doubtful it's an under-dash issue your mechanic created.
The C204 Joe mentioned is the directional connector on the side of the column.
I'd suggest you actually look a little harder for the FSM - you should have 2 books - you could actually need both. You need book 2 for the electrical and book 1 could be helpful if you need to do cancelling cam, switch wire to cam etc.
Last edited by WVZR-1; Oct 17, 2017 at 08:00 AM.
