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22nd May 2024, 15:04 | #1 |
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Horn not working
I, need some expert advice here guys, , My horn just stopped working, I have checked the horn by using fly lead s direct to the battery, and the horn is ok I checked fuse 31, it wasn't, blown, but because the tangs were darkened,, I changed it anyway ,So where do I start with the fault finding, at the steering wheel controls, or the relay? If its the relay, I understand that they are , soldered to the PCB can they be unsoldered and changed easily ?
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22nd May 2024, 15:55 | #2 |
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With your voltmeter on the purple/blue terminal of the horn Martin, looking for +12v.
If there's nothing there, beside the windscreen washer bottle is a grey 6 pin connector which links the main harness to the horn wiring. Separate it and check for voltage on pin 3 on the female side. Simon
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22nd May 2024, 17:27 | #3 |
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I'm a great believer in trying the simple things first. Mine stopped working last year and so, having first checked the fuse, I wondered if it could be a simple case of dirty contacts on the horn buttons. I set about repeatedly pressing each horn button and after around 2 dozen presses on each one, they slowly came back to life - intermittently at first, then fully operative. They've been working fine ever since.
Worth a go as it costs nothing, and takes only five minutes to try. You never know, you might get lucky like I did Cliff
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22nd May 2024, 18:00 | #4 |
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One of my twin pair stopped working and eventually found a failed wire between the multiplug behind the headlight and the horn terminal. Fresh wire sorted it.
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23rd May 2024, 01:00 | #5 |
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Hi Martin
Have you had the bumper off for any reason then it stopped working if so the plug next to and just above the water bottle may not be fully pushed home, or it could have come loose worth checking.
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24th May 2024, 10:31 | #6 |
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do you mean the grey multi plug on the underside of the washer bottle, it's not been disturbed it's hard to get at anyway, without removing the front end, what is the direction of the horn circuit, is it fuse, relay horn push then horns, with earth completing the circuit I checked the fuse, and there's power, there, but at the horn connector, it's dead, I at some point am going to have the front end off to change the bonnet cables, am i right in thinking the wiring for the horn, runs across scuttle panel because i have now got a spare horn, so i have a high and low, , and I've got a spare horn connector, so I might as well fit both and splice a new pair of wires in to the harness connecting to the spare horn connector, and have both horns fitted.
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24th May 2024, 11:10 | #7 | |
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Quote:
I hope this helps. Simon
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24th May 2024, 17:29 | #8 | |
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Quote:
can anyone post a picture, so I'm not looking for the wrong plug |
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24th May 2024, 17:37 | #9 | |
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Quote:
That should be enough for you to identify it. Simon
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26th May 2024, 13:53 | #10 |
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I have just been looking at the wiring diagram and can someone clear up something i'm not 100 per cent sure of, mine has the later fuse box, with the mini fuses, Is it only the earlier cars that have the horn relay fixed to the pcb, because the earlier wiring diagram, says horn relay on rear of panel, showing 3relays, where as the later, shows it on the front, and 4 relays , i checked mine and there's 4 relays, I have started the process of checking, and there's no reading, at the horn plug, and no reading at the multi plug, I bridged the connection at the plug end with 12v direct and the horn sounded, so the fault is beyond the multi plug either the steering wheel wires, or relay
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