Permanent check
When you press the horn located in the steering wheel, with the ignition on, a normal or two-tone sound signal should work. The horn button closes on «mass» (frame) horn relay circuit (chapter «Body electrical system»). The power supply to the relay comes from terminal X, which receives voltage only when the ignition is on.
With a closed electrical circuit (that is, when the klaxon is pressed) the relay contacts are closed, and the audio signal is powered through a wire with a black and yellow sheath. Wiring to «mass» for the sound signal goes through the brown wire.
By pressing the horn contact with «weight» (corps) provide contacts in the steering wheel (1) and in the sound signal board (2). The path then goes through the plug connection (arrows).
Faulty horn?
Remove the bottom protection of the engine compartment (chapter «Body elements»).
Disconnect wire ends.
Remove the corresponding horn.
Connect an auxiliary wire to each plug connector and connect it to the positive and negative terminals of the battery.
If nothing is heard, then this horn is faulty.
wheezing or not at all «dumb» the horn can sometimes be adjusted or brought back to life by turning the adjusting screw located on its back.
Clean the screw from the filling mastic.
After adjustment, reseal the screw with body sealant.
The same test method should be used with a two-tone horn.
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