Troubleshooting - Yamaha YFM7FGPW Service Manual

EBS01067

TROUBLESHOOTING

Any of the following fail to light: head-
light, tail/brake light.
Check:
1. main and headlight fuses
2. battery
3. main switch
4. light switch
5. wiring connections
(of the entire lighting system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. seat
2. battery cover
3. tail/brake light cover
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
EBS01043
1. Main and headlight fuses
• Check the main and headlight fuses for
continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main and headlight fuses OK?
YES NO
Replace the fuse(s).
9 - 31
LIGHTING SYSTEM
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
EBS01068
4. Light switch
• Check the light switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the light switch OK?
YES
– +
ELEC
NO
• Clean the battery
terminals.
• Recharge or re-
place the battery.
NO
Replace the main
switch.
NO
Replace the left han-
dlebar switch.