Horn probs

I have a problem with the horn on my freelander, its not working.
I have tested the fuses and wheel buttons and are working, tested from the relay to the horn and again is working, I need to check the airbag central control unit but wondering if there is anything else to check? Is there any common fault?
Cheers guys,

hi you anit change the radio have you

Yes I have put a new cd radio in, why?
Cheers,

i just posted a problem about my horn, fitted a new stereo a bit back and didn't use the horn since. I'd like to ask why too before i buy a rotary coupler. thanks

The horn is not usually something that you check after fitting a new stereo. The stereo works great and I used an adapter plug to plug it straight in.

yea but thre adaptors dont always do it i had this promblem was horn working before you put new radio in

I don't know now as I had just purchased the car a couple of months ago, it had 12 months MOT so presume the horn was working.
If I disconnect the stereo do you think that this will work as a test? What did you do to overcome?

i got td4 02 comercal it had the standardard radio cassett in and i put a radio cd in all worked fine till i tryed horn would not work found out it was to do with radio put the old radio back and horn worked no disconecting it from radio wont do it is it a gen landrover radio u got in it

I also have an 02 TD4, it has had a conversion from a commercial. I have not used a land rover stereo I put a Sony cd radio in.

i put sony in as well night mare then we tryed few other radios but could not get horn to work its somethink to do with the loom it no matter what adapter u use it wont work unless u put oringnal radio back in.got a mate wwho works for a car radio place and they could not get it to work

Bugger it!!! So I have to go back to the crap radio cassette? Would a genuine land rover cd radio be ok? Looking at the wiring diagram in the Haynes manual it does not look like the horn has anything to do with the stereo.
Thanks for all your help.

yep thats what i had to do go back to old radio yea if you look at the rotary coupling wiring diagram it is linkrd to the radio wiring loom not sure about a gen landrover radio if you got the old radio try it back in and horn will work

you can keep the new radio if you fit a switch on the steering column cover like i said to do in another thread. I have done this when i put a kenwood stereo in mine. Get a switch from maplins and connect it to the horn.

Intrigued by this one? :scratching_chin:
The Purple/Yellow (P/Y)wires are the +12v feed from the Horn Relay in the fuse box. That feeds +12v (P/Y) & ground (black) into the rotary coupler (pins 3 & 4) to the Horn switches and the Cruise Control (if fitted).
Fitting a push switch in to connect the P/Y wire to ground will make the horn sound - Howardo's fix.
The Alarm CCU does the same thing at the other end of the P/Y wire to make lots of noise when the tea-leaf tries to nick it (the P/Y wire has three ends!).
The only +12volt feed to this wire is via the horn relay in the fuse box - nothing shown going anywhere near the audio stuff? :crazy:
There is a pair of wires for the audio remote going via the rotary coupler (pins 5 & 6) but they go back to the head unit and are sense wires not power feeds?
Even the earth (ground) connections are (supposed to be) separate. The Audio uses the same one as the aux power socket and other 'heavy' ground feeds and the horn switches use a separate lighter 'relay' ground point?
Even the Rotary Coupler diag below leaves off the connection from SJ31 to the Alarm CCU - so what chance have we got? :frusty:

Intrigued BUT as I have found from my delvings into the actual FL wiring, what they did with the wiring does not always follow the Rave !!
Changing the audio shouldn't do it but I would like to know why it does.
My guess would be something to do with the black (earth) wires and how they get back to the bodywork? (it may not be as in the diagrams - horn return via the audio connectors perhaps?) Won't hurt to try a temporary clean (good) ground connection into the Rotary Coupler black wire for the horn buttons with the new audio fitted and see what happens?
Let us know if you do get it working.

I think i will give this a try too. I thought initially it was the rotary coupler on my freelander that has failed (i posted a thread about it). But thinking about it it now would everything else fail within the rotary coupler like the SRS and anything else connected with it?

It was only this post not long after mine that made me think of it as i changed my radio a little while back and never really used the horns since.

the radio is your prob

Okie dokie, will give your idea posted earlier a go if i cannot find a way around it.

Thanks everyone. I am always willing to give it a go. I will post my findings.
Cheers guys,

Update, all sorted. Horn working with the Sony stereo, Yehh.
I removed the rotary coupling (taking care not to turn it) cleaned up the connections and all working.

Hi all,

Sorry to drag up an old thread but this seems quite pertinent to my predicament.

I have just bought a Freelander & the horn & radio don't work. I have checked the fuses & all are ok but there is a strange anomoly which I wondered if you could help. There is no fuse allocation under the steering wheel fuse box & in the manual it says it is under the bonnet. When I look there, there is no slot marked on the sticker??? Where should the horn fuse be as I have contradictory information here?

So going back to my problem, is the radio function & horn a problem that is 'reliant' to say?

Oh and forgot to mention that I have purchased another radio unit to see if that works...

Cheers all,

bigroo