15
Failure of charging (battery overdischarge or overcharge)
Fault Diagnosis
Adjustment
Fault Cause
No voltage rise
of battery
The battery voltage rises
to normal, and then
restores to the original
voltage after flameout
Measuring the voltage at
both ends of the battery
and starting the motor
Normal
Abnormal
Check the voltage regulator
plug is loose
Voltage
found
No voltage
found
Alternator coil impedance
measuring
Normal
Abnormal
The voltage
is normal
The voltage is
higher than the
normal
Starting the engine, connecting the red
line of the voltage regulator socket to
avometer positive and negative pole lines
and connecting it to the vehicle body
Check the voltage between the pole lines
and the vehicle body when connecting the
red line of the voltage regulator socket to
multimeter positive and negative pole lines
and connecting it to the vehicle body
Failure of charging
and overcharge
Normal
Poor contact
Check whether the wiring of the voltage
regulator is properly contacted
Test impedance of single
voltage regulator
Out of battery life
Failure of battery
Poor contact of plug
Red line breakage of wiring
Voltage regulator
White line breakage of wiring
Failure of ignition coil
Poor contact of joint
Breakage of AC generator white line
Failure of battery
Poor contact of joint and poor
grounding of wiring
Failure of voltage regulator
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