Yamaha XVS250 2001, Service Manual

Page: 307 / 332

7-30
2. Voltage
Connect the pocket tester (DC 20 V) to the
tail / brake light coupler (wire harness side) as
shown.
Tester positive probe blue
Tester negative probe black
1
2
YES
The wiring circuit
from the main switch
to the tail / brake light
coupler is faulty and
must be repaired.
NO
This circuit is OK.
Set the main switch to “ON”
Set the light switch to “ ” or “ ”.
Measure the voltage (12 V) of blue on the
tail / brake light coupler (wire harness side).
Is the voltage within specification?
1
Replace the auxiliary
light bulb, socket or
both.
NO
EB05413
4. The auxiliary light fails to come on.
1. Auxiliary light bulb and socket
Check the auxiliary light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
Are the auxiliary light bulb and socket OK?
YES
2. Voltage
Connect the pocket tester (DC 20 V) to the
auxiliary light couplers (wire harness side) as
shown.
Tester positive probe blue / red
Tester negative probe black
1
2
YES
The wiring circuit
from the main switch
to the auxiliary light
connectors is faulty
and must be re-
paired.
NO
This circuit is OK.
Set the main switch to “ON”
Set the light switch to “ ” or “ ”.
Measure the voltage (12 V) of blue / red on
the auxiliary light couplers (wire harness
side).
Is the voltage within specification?
1
LIGHTING SYSTEM
ELEC