Technical Punto mk2 (facelift) Horn failure: which fuse?

[derrick888]

Hi all,
Can somebody tell me which fuse I should check/replace to get my horn working again on my Punto mk2 - All replies appreciated.

 

[PeyWetWork]

Manual says F10 (Bonnet fuse box)

 

[fingers99]

Chances are though -- but do check the fuse -- that it'll respond well to having the connectors at the fuse itself cleaned up and greased.

 

[benny279]

Also be worth cleaning up the connectors at the horn with some electric contact spray or wd40, my horn stopped working sprayed the connectors with wd40 and it worked again. Connectors over time can get corroded, so it's always worth a try.

As they say, anything is worth a try!

 

[homeward]

My horn stopped working after replacing the front bumper... -- turned out to be one of the spade connectors (the wires inside had rotted/come loose). Trimmed the wire; replaced the connector... -- all was well.

Worth checking with a multimeter; although, sometimes, the horns themselves do fail....

 

[Ziggy122]

Start with the easy option
a multimeter set to 12v DC (most are 20v DC which is fine)

Put the probes on the horn terminals and press the horn

should get atleast 12v (maybe less with engine off)

If you get 12v - its the horn
if you dont get 12v its something else

The Fuse is a 15amp fuse
Engine bay box - Right hand side of the Mini Fuses (Small ones) its the 4th one down

If that fuse is okay
Check the relay - its the the little boxes Near the fuse actually Its the 3rd one down (black) On the right hand side

I believe the Hi-beam relay will be fine for testing - so swap it with the other black relay (top one) to ensure the relay works fine
If the relay is at fault - the Hibeam lights will fail to work

but relay failure is rare to be honest, i'd be inclined to test the horn with a direct 12v feed before playing with relays

Ziggy

 

[derrick888]

Many Thanks! All replies are Bang ON!

Took it to the local garage yesterday - good job I did because they had it up on the ramp. All FF replies mentioned all or part of the solution! (A mechanic at Formula One spent 20 mins and charged me £12 to remedy and now its tooting!)

Thanks again to the FF crowd!

 

[Ziggy122]

They had it on a ramp - todo a horn? :nutter:

 

[sutera1996]

i had to do the biggest job to do with a mk2b horn, install a new one!!!, which i carried out on the driveway

So even if they were in the bay checking/ sanding the contacts, the horns at the top of the bay, so dosent that just make it even more difficult :doh:

 

[benny279]

Formula One Autocentres......idiots, I'm with Ziggy122 why was it on a ramp to have a horn sorted?