Troubleshooting - Yamaha XP500 Service Manual

EAS00781

TROUBLESHOOTING

Any of the following fail to light: head-
light, high beam indicator light, taillight,
licence plate light, storage box light, aux-
iliary lights or meter light.
Check:
1. main, headlight, signaling system, lighting
system and backup fuses
2. battery
3. main switch
4. dimmer switch
5. pass switch
6. storage box light switch
7. headlight relay
8. wiring connections
(of the entire lighting system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. battery cover
2. rear cover
3. front cowling
4. handlebar cover
5. leg shield
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112, YU-03112-C
EAS00738
1. Main, headlight, signaling system, lighting
system and backup fuses
• Check the main, headlight, signaling sys-
tem, lighting system and backup fuses for
continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main, headlight, signaling system,
lighting system and backup fuses OK?
YES
NO
Replace the fuse(s).
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?
EAS00749
3. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
EAS00784
4. Dimmer switch
• Check the dimmer switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the dimmer switch OK?
8 - 33
ELEC
YES
• Clean the battery
terminals.
• Recharge or
replace the battery.
YES
Replace the
switch/immobilizer
unit.
YES
The dimmer switch is
faulty. Replace the
left handlebar switch.
– +
NO
NO
main
NO