Yamaha XF50W Service Manual page 320

EAS00799
3. The turn signal light, turn signal indicator light
or both fail to blink.
1. Turn signal indicator light bulb and socket
• Check the turn signal indicator light bulb and
socket for continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS"
• Are the turn signal indicator light bulb and
socket OK?
YES
V
2. Turn signal light bulb and socket
• Check the turn signal light bulb and socket
for continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS"
• Are the turn signal light bulb and socket OK?
YES
V
3. Turn signal switch
• Check the turn signal switch for continuity.
Refer to "CHECKING THE SWITCHES"
• Is the turn signal switch OK?
YES
V
NO
*
Replace the turn signal
indicator light bulb,
socket or both.
NO
4
Replace the turn signal
light bulb, socket or both.
NO
*
Replace the left handle-
bar switch.
SIGNALING SYSTEM
4. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal relay coupler (wire harness side)
as shown.
Positive tester probe
Negative tester probe
• Set the main switch to "ON".
• Measure the voltage (DC 12 V) on brown
©at the turn signal relay coupler (wire har-
ness side).
• Is the voltage within specification?
YES
V
8-38
ELEC
-» brown ©
-> ground
I
NO
The wiring circuit from
the main switch to the
turn signal relay coupler
is faulty and must be re-
paired.
Refer to "CIRCUIT DIA-
GRAM".
+i