Generic Race 50, Service Manual

Page: 43 / 209

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Trouble diagnosis program for the malfunction that brake lamp does not come on
Trouble diagnosis program for undercharge of battery
Brake lamp does not
come on
Remove brake lamp shade to check circuit board
of brake lamp for burn-out
Replace circuit
board of brake lamp
Short plugs on two terminals or lead wires of brake lamp
switch with a conductor
After shorted, brake lamp
does not come on yet.
After shorted, brake
lamp comes on.
Score and touch power supply conductor
and ground of brake lamp switch with a
screwdriver or conductor to check status of
sparks
Brake lamp switch is
adjusted improperly or its
internal contact contacts
poorly
Sparks are generated
during scoring and touch
No sparks are generated
during scoring and touch
Conductor between brake lamp switch and brake
lamp shorted or opened
Power supply conductor between ignition switch and
brake lamp switch opened or shorted
Battery is
undercharged
Check if brake lamp
keeps illuminating
Adjust or replace brake
lamp switch
Leakage current is less than
specified value
Leakage current is greater than
specified value (generally, it is
required that leakage current is not
greater than 1mA).
Check charge coil of magneto for
short circuit
Circuit between rectifier,
rectification regulator or battery
and ignition switch shorted
Replace charge
coil
1. Check if electrolyte inside battery is
insufficient
2. Check if density of electrolyte in battery
is too low
3. Check for sulphated or shorted pole
plate in battery
Set ignition switch to “OFF” position, remove negative cable from battery,
connect negative meter pen of an ammeter to negative terminal of battery and
positive meter pen to negative cable, and then detect and measure leakage
current.