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The power of storage battery is not
enough or the circuit between storage
battery and ignition switch has open
circuit or short circuit.
The inner connecting point of horn
has bad connection or the lead be-
tween electric horn and button has
open circuit.
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2.9 Analysis of electric horn
Turn on ignition switch,turn on/off turning light switch and check the turning light.
Turning light cannot illuminate or
illuminate dimly.
When rubbing,there is spark or the
voltage is normal.
Connect the power lead of electric horn.Connect
the non-power connection of electric horn
(connection of button)with the cathode wire.
After connection,the electric
horn can make sound.
Electric horn can-
not make sound.
Turning light can illuminate brightly.
Power supply of storage
battery is normal.
Remove the power lead from the power connection of electric horn,
then rub the power lead with cathode wire.Check the spark or
measure the voltage with multimeter.
After connection,the electric
horn still cannot make sound.
Adjust the volume and
tone of electric horn.
After adjustment,electric horn
still cannot make sound.
Electric horn is
damaged.
When rubbing,there is no spark or the
voltage is not normal.
The power wire between
ignition switch and electric
horn has open circuit.
After adjustment,the
horn sound is normal.
Electric horn is adjusted
unproperly.
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