Troubleshooting - Yamaha 2004 YP400 Service Manual

EAS00774

TROUBLESHOOTING

The battery is not being charged.
Check:
1. main fuse
2. battery
3. charging voltage
4. stator coil resistance
5. wiring connections
(of the entire charging system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. footrest board (left)
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112, YU-03112-C
EAS00738
1. Main fuse
• Check the main fuse for continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Is the main fuse OK?
YES
NO
Replace the fuse.
CHARGING SYSTEM
EAS00739
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?
8 - 24
ELEC
YES
• Clean the battery
terminals.
• Recharge or
replace the battery.
– +
NO