Yamaha XF50W Service Manual page 313

YES
V
This circuit is OK.
NO
*
The wiring circuit from
the main switch to the
headlight coupler or
meter assembly coupler
is faulty and must be re-
paired.
Refer to "CIRCUIT DIA-
GRAM".
LIGHTING SYSTEM
EAS00789
2. The 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?
YES
V
2. Voltage
• Connect the pocket tester (DC 20 V) to the
meter light coupler (wire harness side) as
shown.
Positive tester probe
Negative tester
• Set the main switch to "ON".
• Measure the voltage (DC 12 V) of brown
on the meter light coupler (wire harness
side).
• Is the voltage within specification?
YES
V
This circuit is OK.
8-31
ELEC
NO
4
Replace the meter light
bulb, socket or both.
-» brown ©
probe-* black (2)
®
NO
*
The wiring circuit from
the main switch to the
meter light coupler is
faulty and must be re-
paired.
Refer to "CIRCUIT DIA-
GRAM".
+i
(T)