Troubleshooting - Yamaha YFM7FGPW Service Manual

EBS01073

TROUBLESHOOTING

Any of the following fail to light: warning
light, brake light or an indicator light.
Check:
1. main, signaling system and ignition fuses
2. battery
3. main switch
4. wiring connections
(of the entire signaling system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. seat
2. battery cover
3. side panels
4. V-belt cooling duct 2
5. rear fender
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
EBS01043
1. Main, signaling system and ignition fuses
• Check the main, signaling system and
ignition fuses for continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main, signaling system and igni-
tion fuses OK?
YES
SIGNALING SYSTEM
NO
Replace the fuse(s).
9 - 36
EBS01044
2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20 °C (68 °F)
• Is the battery OK?
YES
EBS01041
3. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
YES
EBS01074
4. Wiring
• Check the entire signal system wiring.
Refer to "CIRCUIT DIAGRAM".
• Is the signaling system wiring properly
connected and without defects?
YES
Check the condition
of each of the signal-
ing system circuits.
Refer to "CHECK-
ING THE SIGNAL-
ING SYSTEM".
– +
ELEC
NO
• Clean the battery
terminals.
• Recharge or re-
place the battery.
NO
Replace the main
switch.
NO
Properly connect or
repair the signaling
system wiring.