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Ford S-Max horn not working

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Hi All

I recently bought a s max and the horn isn't working.  One scanner shows B1C55 horn relay coil circuit fault.  Please see attached picture.

I took the horn off and tested them directly with battery.  Both work fine.  When horn button is pressed there is no clicking sound from the relay.  I tried to find a relay but couldn't find one from halfords etc. 

However in the fuse box there was another relay with same numbers and figures.  I swapped it with the horn relay but the horn still not working.

Can anyone please suggest what the next step should be please?  ThanksScreenshot_20170917-174849.thumb.png.18045f60a772a5e8a144bacaa1b3f7ef.png

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Thank you for taking the time to respond. I have checked fuse 31 not 33. I will check it when i get home on Friday. 33 is for light switch module, engine compartment fuse box could though. 

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I see.  No I don't have a multimeter but I will be picking up one from halfords on the weekend.

I will watch some YouTube videos to see how to test relay etc.  Any questions I may bother you here again if you don't mind.

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a couple of simple tests with bridging replay connector pins and continuity test will rule out alot. let me know when your ready with multimeter.

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Hi Ian,  I got home am hour ago.  Couldn't wait to see if the plan works.

 

So tested the relay by attaching red and black with 2 small connectors while multimeter was set at 200k ohm and display was showing 1 reading before connecting.

 

After connecting the cable with the connectors reading dropped down to 0.1

Does it mean relay is working properly?

 

If it is then what shall I do next?

 

I have treated f33 fuse too and it is working properly. Please suggest? Thanks

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not sure what you have done to be honest. 

right, first test. pull the horn relay out. look at relay and corresponding connectors look to see if there is any numbers . you need to bridge the connector pins 3 and 5 together. thats bypassing relay and switch. your putting the fuse feed 31 directly to horn. horn should sound. 

do that and report back.

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Connector 3 and 5 identified successfully.  Both bridged together by putting multi meter cables to each connector.  Ohm dropped from 1 to 0.1. Horn doesn't sound.

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Ok will report back tomorrow morning as dont want to disturb the neighbours. Lol

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Horn issue now resolved with Ian's help.

Please see solution on 

Thanks

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