Horn Diagnostics

[stevelup]

Hi

My horn has ceased working - just wanted to sanity check something.

1) If I apply voltage to the horn off the bike, should it sound? There's nothing 'weird' about it? Because it doesn't sound if I apply voltage to it, and it reads open circuit with a multimeter.

2) With the horn disconnected, I see a constant 6V across the terminals. Something to do with CANBUS?

3) That 6V does -not- change when I press the horn button.

I have jumped to the following almighty conclusion with no basis in fact, so would appreciate input... The horn itself is dead. 2) explains 3) - in that the bike knows there's no horn connected / wire is damaged / whatever - so it is not trying to activate it?

Cheers,

Steve

 

[Santa-2512]

Hi

My horn has ceased working - just wanted to sanity check something.

1) If I apply voltage to the horn off the bike, should it sound? There's nothing 'weird' about it? Because it doesn't sound if I apply voltage to it, and it reads open circuit with a multimeter.

2) With the horn disconnected, I see a constant 6V across the terminals. Something to do with CANBUS?

3) That 6V does -not- change when I press the horn button.

I have jumped to the following almighty conclusion with no basis in fact, so would appreciate input... The horn itself is dead. 2) explains 3) - in that the bike knows there's no horn connected / wire is damaged / whatever - so it is not trying to activate it?

Cheers,

Steve

Horn off bike juimper leads from batter to horn terminals & the horn should sound

no sound = dead horn

if you have sound - plug / wiring issue

 

[Deleted account 191119001]

Did the bike get wet, have you washed it, could be the switch in that case, if you are getting sound as santa says.

 

[fred_jb]

Yes - if you connect a 12V supply across the horn terminals it should sound - though I would normally recommend having a fuse in the test circuit in case the horn has failed short circuit. In your case it sounds like it has failed open circuit, so just looks like a replacement is required, and hopefully the wiring powering it is OK.

Maybe the system monitors the resistance of the horn circuit and doesn't supply full power if there is no horn connected, so testing with no horn connected is probably not going to tell you much. Do you have another horn you could connect to try, or maybe borrow one from someone?

 

[stevelup]

Thanks folks - pretty confident it's dead then. It definitely doesn't sound when connected to a battery.

Might take this opportunity to fit something a bit louder anyway!

 

[Deleted account 191119001]

Thanks folks - pretty confident it's dead then. It definitely doesn't sound when connected to a battery.

Might take this opportunity to fit something a bit louder anyway!

Soundbomb mini plug and play.

https://www.nippynormans.com/f800gs...venture-lc-2014-to-2018-r1250gs1250-adventure