Troubleshooting - Yamaha XF50W Service Manual

EAS00794

TROUBLESHOOTING

• Any of the following fail to light: turn sig-
nal light, brake light or an indicator light.
• The horn fails to sound.
Check:
1. main fuse
2. battery
3. main switch
4. wiring connections
(of the entire signaling system)
NOTE:
8 Before troubleshooting, remove the follow-
ing part(s):
1. battery cover/front cover
2. side cover(left and right)
3. front fork upper cover
4. front fork cover(left and right)
5. leg shield1,2
6. footrest board
8 Troubleshoot with the following special
tool(s).
P*
Pocket tester
90890-03112
YU-03112-C
EAS00738
1. Main fuse
• Check the main fuse for continuity.
Refer to "CHECKING THE FUSE" in chap-
ter 3.
• Is the fuse OK?
YES
V
NO
*
Replace the fuse.
SIGNALING SYSTEM
EAS00739
2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
II
Minimum open-circuit voltage
12.8 V or more at 20°C (68°F)
• Is the battery OK?
YES
V
EAS00749
3. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
YES
V
EAS00795
4. Wiring
• Check the entire signal system's wiring.
Refer to "CIRCUIT DIAGRAM".
• Is the signaling system's wiring properly con-
nected and without defects?
YES
V
Check the condi-
tion of each of the
signaling system's
circuits.
Refer to "CHECK-
ING THE SIG-
NALING SYS-
TEM".
8-35
4
NO
• Clean the battery ter-
minals.
• Recharge or replace
the battery.
4
NO
Replace the main
switch.
4
NO
Properly connect or re-
pair the signaling
system's wiring.