Yamaha XVS250 2001, Service Manual

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7-29
Set the main switch to “ON”.
Set the light switch to “ ”.
Set the dimmer switch to “ ” or “ ”.
Measure the voltage (12 V) of yellow or
green on the headlight coupler (headlight
side).
Measure the voltage (12 V) of yellow on
the meter assembly coupler.
Is the voltage within specification?
2
YES
Replace the meter
light bulb, socket or
both.
NO
EAS00789
2. A meter light fails to come on.
1. Meter light bulb and socket.
Check the meter light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
Are the meter light bulb and socket OK?
The wiring circuit
from the main switch
to the headlight cou-
pler is faulty and must
be repaired.
NO
YES
2. Voltage
Connect the pocket tester (20 V) to the meter
assembly coupler (wire harness side) as
shown.
Tester positive probe blue
Tester negative probe black
1
2
This circuit is OK.
Replace the tail /
brake light bulb, sock-
et or both.
NO
YES
The wiring circuit
from the main switch
to the meter assem-
bly coupler is faulty
and must be re-
paired.
NO
This circuit is OK.
EAS00790
3. A tail / brake light fails to come on.
1. Tail / brake light bulb and socket
Check the tail / brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
Are the tail / brake light bulb and socket OK?
YES
Set the main switch to “ON”.
Set the light switch to “ ” or “ ”.
Measure the voltage (12 V) of blue on the
meter assembly coupler (wire harness side).
Is the voltage within specification?
1
1
4
LIGHTING SYSTEM
ELEC