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Diagnosis on burnt-out bulbs
Burnt-out bulbs
Turn the ignition switch; press the horn or turn the steering
lamp switch.
The
horn
works
abnormally or does not
make sound; the steering
lamp emits weak light.
The horn makes loud sound and
the steering lamp emits bright
light.
1.
Check whether the conductor joint
connecting battery is in good
condition.
2.
Check whether the electrolyte is
deficient inside the battery.
3.
Check whether the electrolyte density
inside the battery is too low.
4. 检查蓄电池内极板是否硫化或短
路
Remove the connector between the rectifier
regulator and the cable assembly; check whether
there
is
open
circuit
between
the
lighting/charging coil of electromagnetic motor
and the rectifier regulator with an ohm meter.
Set the multimeter to DC voltage 0V~20V;
measure the voltage between the conductor
terminal (connector to battery) (normally
red wire or red/white wire) and the
negative pole.
Connection
No voltage
Voltage available
Open circuit between the
connector and the battery
Check whether the rectifier regulator
works normally.
