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Diagnosis on electric horn failure in making sound
The test lamp
is light.
The test lamp
is not light.
Open circuit or short circuit of
power cord of steering lamp.
Open circuit or short circuit between the
ignition switch and the flasher or between
the flasher and the steering lamp switch.
Electric horn failure
in making sound
Turn the ignition switch and
steering lamp switch; check the
work condition of steering lamp.
The steering lamp is not
light or emits weak light.
The steering lamp emits bright
light.
Battery power supply shortage or
open circuit/short circuit between
battery and ignition switch.
Normal battery
power supply
Remove the power cord from the terminal of the electric
horn and strike the power cord with the earth; check the
spark
Spark available
No spark
Connect to the power cord of electric horn; use a
screwdriver to contact the non-power cord terminal (to
button) with the earth.
Short circuit between
the ignition switch and
electric horn
The electric horn makes
sound.
The electric horn does
not make sound.
Bad contact inside the horn button
or open circuit between the electric
horn and the button.
Adjust the volume and tune of the
electric horn.
The electric horn does not
make sound.
The electric horn works normally.
The electric horn
is broken.
Improper adjustment
