Symptom: Electric horn mutes. Diagnosis procedures
Turn on ignition switch; slide turn signal
lamp switch and check.
Turn signal lamp is not lit or dim.
Turn signal lamp shines brightly.
Battery is low or the wire from battery
to ignition switch is broken or shorted.
Power supply from battery is normal.
Pull out power line from power terminal of electric horn; touch
the power line quickly with ground wire to check spark.
Connect power line of horn, use a screwdriver to
connect non-power terminal (terminal to button)
of horn with ground wire.
Power line between ignition switch
and electric horn is broken.
Electric horn sounds after connection.
Inner contact of horn is poorly
contacted or the wire from
horn to button is broken.
Adjust volume and tune of horn.
Horn does not work after adjustment.
Horn works normally after adjustment.
Horn is improperly adjusted
Electric horn does not sound after connection.
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