Generic Race 50, Service Manual

Page: 39 / 209

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Trouble diagnosis program for the malfunction that illuminating lamp bulb is liable to burn-out
Illuminating lamp is
liable to burn-out
Turn on ignition switch, depress horn button, or toggle
turn signal lamp switch.
Electric horn is hoarse
or does not make any
sound and turn signal
lamp light is dim
Electric horn can make loud and
clear sound and turn signal lamp
can give off bright light
1. Check conductor joint connecting
battery for poor contact
2. Check if electrolyte inside battery is
insufficient
3. Check if density of electrolyte in
battery is too low
4. Check for sulphated or shorted pole
plate in battery
Disconnect rectification regulator from
connector of complete vehicle cable and
then use an ohm meter to measure if
circuits between lighting and charge
coils of magneto and rectification
regulator are opened
Set a multimeter to 0V~20V DC Voltage
range and then measure voltage between
conductor end (generally, red wire or
red/white wire) from connector to battery
and negative.
On
No voltage
display
Voltage display
available
Conductor from connector to
battery opened
Check rectification regulator for
malfunction