Failure diagnosis procedure when the steering lamp does not work
The steering lamp does not work
Some steering lamps on one
side do not work
Steering lamps on one side do not work
All the steering lamps do not work
Remove the steering lamp
cover and check if the bulb of
steering lamp is burnt out
Replace
the bulb
of
steering
lamp
Use the voltmeter
to measure the
voltage between
the lamp stand
power line
contact and
negative pole
The lamp stand is
grounded
improperly or the
connection
between steering
lamp bulb and
lamp stand is in
bad contact
The power
line of
lamp
stand is
broken
Remove the steering lamp
cover and check if the bulb of
steering lamp is burnt out
Replace
the bulb
of steering
lamp
Disconnect the
steering lamp switch
insert connector, use
the ohmmeter to test
if the failure side of
steering lamp switch
has been solved
The output
power line
on the
failure side
is broken or
the lamp
stand is
grounded
improperly
The internal
contact of
steering lamp is
in bad contact
Press the horn button to check the
working condition of electric horn
The electric horn
sounds loudly
The electric horn
does not sound or
sounds raucously
The electricity
supply in storage
battery is
insufficient
The electricity supply
in storage battery is
insufficient
Remove the steering lamp cover
and check if the bulb of steering
lamp is burnt out
Toggle the steering lamp switch,
use one lead or screwdriver to
short-circuit the two lugs of
scintillator
Replace the steering
lamp bulb, at the
same time check if
the commutation
regulator works well
The steering lamp still does not work after
short-circuiting
The steering lamp will
work after short-circuiting
Disconnect the insert connector of steering lamp switch, use
a lead to short-circuit the power input lead of the steering
lamp switch with the power leads connecting to left and
right steering lamps respectively
The scintillator
is damaged
The steering lamp will
work after short-circuiting
The steering lamp still does not work after
short-circuiting
The internal contact of
steering lamp switch is in
bad contact
Use lamp-testing method to check if there is power output
from the power input lead of the steering lamp switch
Testing lamp does not work
The power lead of the steering
lamp is broken or short-circuited
The line from ignition switch to
scintillator or the line from
scintillator to steering lamp switch
is broken or short-circuited
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