Troubleshooting - Yamaha YJ50RN Service Manual

EAS00782

TROUBLESHOOTING

Any of the following fail to light: Head-
light, high beam indicator light, taillight,
auxiliary light, and meter light.
Check:
1. main fuse
2. battery
3. main switch
4. dimmer switch
5. wiring (of the entire charging system)
NOTE:
@
• Before troubleshooting, remove the following
part(s):
1) center cover
2) side cover (left)
3) side cover (right)
4) tail cover
5) headlight cover
6) front panel
• Troubleshoot with the following special
tool(s).
Pocket tester
YU-03112
EAS00738
1. Main fuse
• Check the main fuse for continuity.
Refer to "CHECKING THE FUSE" in chap-
ter 3.
• Is the main fuse OK?
YES
NO
Replace the main
fuse.
7 - 25
LIGHTING 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?
YES
EAS00749
3. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
YES
EAS00785
4. Dimmer switch
• Check the dimmer switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the dimmer switch OK?
YES
– +
ELEC
NO
• Clean the battery
terminals.
• Recharge or
replace the battery.
NO
Replace the main
switch.
NO
The dimmer switch
is faulty.
Replace the left han-
dlebar switch.