KS Motorcycles K-LIGHT125, Maintenance Manual

Page: 43 / 278

Diagnostic procedure for the fault that lights are weak
Yes No
Yes No
No Yes
Yes No
Lights are weak
AC power lighting
system
DC power lighting
system
Disconnect the connector clip between
alternator lead harness and vehicle cable, and
check whether the resistance between output
wire sections of alternator lighting coil is
smaller than the standard value
Turn on the ignition switch,
press the horn button or rotate
the turn signal light switch
Lighting coil is
short-circuited
Start the engine and limit its speed.
Disconnect the connector clip
between rectifying regulator and
vehicle cable and check the
brightness of light
Light can return to normal
after disconnection
Light is weak after
disconnection
The regulated voltage of
rectifying regulator is too
low
The electric horn can
make a loud sound and
the turn signal light can
give off a bright light
Electric horn is hoarse and
the turn signal light is dim
Insufficient battery power or
poor connection between the
battery and ignition switch
Check and
eliminate
Open the headlight combination and
check whether the headlight bulb glass is
black or yellowish green
Check whether the power of light bulb used in the
lighting system meets the specified requirements
Replace headlight bulb
1. Check whether the internal contacts of lighting switch
and edge switch are in poor contact
2. Check whether the connector clip and bond strap in the
system are in poor contact
Replace light bulb
Check whether the magnetic
motor charging coil and the line in
the charging system are
short-circuited
- 42 -
KS MOTORCYCLES - https://ksmotorcycles.com