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  1. scrappy_doo

    scrappy_doo Active Member

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    Got an extremely low mileage 2004 Corsa which has a defective horn. No matter how hard you press the steering wheel there's not a sound from it. I've tried a multimeter over the contact points on the wiring plug to the horn but no output, then stuck a direct 12v to the horn and it worked a treat. Not sure where the horn relay is but I have stuck my ear next to the fuse box while the horn was being pressed and no clicking whatsoever.

    What's my next plan of action? Which specific relay is it? What kind of a job is replacing the horn switchgear on the steering wheel?
  2. scrappy_doo

    scrappy_doo Active Member

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    Had airbag off today and wiring to horn switch's looked intact....this is becoming a nightmare!
  3. scrappy_doo

    scrappy_doo Active Member

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    Anyone had the same problem?
  4. scrappy_doo

    scrappy_doo Active Member

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    Can anyone confirm that the steering wheel horn button switches are a known failure point? Also whereabouts is the relay located and is it the same as the headlamp ones so I could possibly switch them over to test.
  5. clutchman-2008

    clutchman-2008 Corsa c specialist

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    Location:
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    Hi,not normally a problem,id check the relay,think its in the black box next to the battery,its held down by half a dozen or so torx screws.
  6. scrappy_doo

    scrappy_doo Active Member

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    Firstly thanks for coming back Clutchman.

    Is the relay not inside the fusebox? Also how would I test it once I locate it?
  7. clutchman-2008

    clutchman-2008 Corsa c specialist

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    I cant confirm the exact location as im not with my computer with autodata on it,it may be in the normal fuse box but i know the headlamp and indicator relays are in the body control module next to the battery so good chance its in there,as for testing im sure someone can tell you but i cant as im not the best at electrics,i would simply change the relay with another
  8. scrappy_doo

    scrappy_doo Active Member

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    Can anyone advise me of the exact location and if any other relays can be interchanged in order for me to work out if it's duff or not??
  9. scrappy_doo

    scrappy_doo Active Member

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    Does anyone know where and what the horn relay located/looks like? I've had the fusebox to pieces today and there so many relays that are the same and they do the same thing that you need yo know where the horn relay is located before you can even try to remedy it.
  10. scrappy_doo

    scrappy_doo Active Member

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    Location:
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    Asked dealer for a Horn Relay and they've advised that the horn switch wiring is a common failure point!

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