I know you have a 1982 but the wire colors should be the same as on a 1980 Orange, Black & Dk.Green. Do a continuity check between the black of the 3 wire connector and a good known ground. You should have continuity when the horn button is pressed. Grounding the horn button is what energizes the horn relay coil. Popular posts on the C3 forum. Citroen C3 Central locking stopped working! [SOLVED] Help! I can't log in. Hi, I hope that you might be able to help. I have a 2007 1.4 petrol C3 which has a problem with the Horn and Airbag. First, the horn does not work using the button on the steering wheel. However I hav. TMF Rules and Regulations ·. Horn Not Working In Mpi 1999 - posted in Problems, Questions and Technical: Hi, I put my Cooper back on the road at the end of April and since then the horn has not worked. It passed a MOT in April so I presume they checked this, whether or not it was glossed over as some garages do im unsure. Modified 1 year, 3 months ago. Viewed 63 times. 0. Citroen c2 did start fine, but after changing cam belt it won't start. It is cranking over, but not starting. Dash lights are on. Doesn't seem to get spark. Please Help? 12. 30. Windscreen wiper. 14. 30. Air pump (petrol version), Diesel fuel heater. WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market. C2, Citroen electricity. Citroen C2 (2003 - 2009) - fuse box diagram. Hope this is not thread stealing--think we are all talking same problem set. Have horn ground problem as well. Only works with the horn button off and arching it with a screwdriver. Had column out to paint it as well and replaced rag joint. Looked at the wiring diagram and there is nothing showing a ground for the column. Regards, malcolm. current ride a BX 1.7 TZD estate 1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable ) layed up roppy 1.9TD XANT estate, now gone to meet her maker Popular posts on the C3 forum. Citroen C3 Central locking stopped working! [SOLVED] Help! I can't log in. Hello, The other day I was driving on the motorway when someone cut into my lane. I gave the horn a good blast then it suddenly stopped working. Whether just coincidence or not I heard something drop. 2016 Citroen Dispatch, the horn's stopped working. Has had recent alarm issues, may be related, but I hope not. The fuse box/BSI has a Horn fuse, which has blown. Replace it and it blows again. Disconnect the horn unit itself, replace the fuse, it blows again. dadaroo. I agree with 8VETTE7, if you can use the remote to have the BCM activate the horn with consistency, then the problem should be in the steering wheel/column. Most likely the switches. Just make sure you disconnect the battery (the negative side will do) before you monkey around with the airbag. v6zj0M.