SC
SC
SC
SC Battery
Battery
Battery
Battery and
and
and
and Charging
Charging
Charging
Charging System
System
System
System
-
11
-
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Test
Test
Test
Test
Fault
Fault
Fault
Fault determination
determination
determination
determination of
of
of
of Generator
Generator
Generator
Generator
Fault diagnosis of charging system
Fault symptoms Fault diagnosis Troubleshooting
No lightened charging indicator lamp
when the ignition switch is at the 2
nd
gear
① Bulb fault
②
Looseness or oxidation of generator
connectors or battery terminals, poor
connection of ground wire
③ Faults in voltage regulator, rotor or brush
circuit
④
Ignition switch fault
① Install a new bulb.
②
Clean and tighten cables of battery or
generator and apply acid proof grease.
Inspect ground wire connectors, clean
and tighten if necessary.
③ Eliminate the open circuit fault
④
Install a new ignition switch
Incorrect go-out of charging
indicator lamp when the engine is in
operation
① Loose drive belt
②
Loose or oxidized generator connector,
poor connection of ground wire
③
Unable contact of brush with rotor ring,
stuck brush in conduction direction, wear
and oil stains of brush. Wear of bearing
and slip ring, faults in voltage regulator or
rectifier assembly
① Tension drive belt again
②
Clean and tighten connectors
③ Inspect brush connector, clean/loosen
brush if necessary, install a n ew voltage
regulator or replace the faulted generator
Undercharge
① Loose drive belt
② Fault in welding points of generator
connector
③
Poor connection of ground wire between
voltage regulator and generator housing
① Tension drive belt again
② Install a new voltage regulator or replace
the faulted generator if necessary
③
Clean and tighten connectors
Overcharge
① Voltage regulator fault ① Install a new voltage regulator or replace
the faulted generator if necessary
Noise in operation
① Bearing wear
② Loose pulley
③ Belt wear
① Install a new generator
② Tension the pulley according to
specified torque. In the case of broken
shaft, replace the generator
③ Install a new belt
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