KYMCO XCITING 500 Service Manual page 33

1
. GENERAL INFORMATION
POOR CHARGING (BATTERY OVER DISCHARGING OR OVERCHARGING)
Undercharging
Inspection/Adjustment
Start engine and test
limit voltage of battery
terminals
Measure resistance
between AC generator
coil terminals
Test output voltage of
regulator/rectifier
coupler red wire
Overcharging
Inspection/Adjustment
Measure battery limit
voltage with an electric
tester
Check resistance
between regulator/
rectifier terminals
Symptom
Voltage does not
Normal voltage
increase
Normal
Resistance too low
Normal voltage
Symptom
Normal
Normal
Probable Cause
No voltage
Probable Cause
Abnormal
Abnormal
XCITING 500
Faulty AC generator
Faulty regulator/rectifier
Faulty battery
Shorted AC generator coil
Open circuit between AC
generator 3 yellow wires
Faulty regulator/rectifier
Faulty AC generator
Loose regulator/rectifier
coupler
Limit voltage too high
Faulty battery
Faulty regulator/rectifier
Broken or poorly connected
regulator/rectifier black wire
Limit voltage too high
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