Troubleshooting - Yamaha YP250R 2005 Service Manual

EAS00781

TROUBLESHOOTING

Any of the following fail to light: head-
lights, high beam indicator light, taillight,
license plate light, auxiliary lights or
meter light.
Check:
1. main, headlight, signaling system, and CDI
unit fuses
2. battery
3. main switch
4. dimmer/pass switch
5. sidestand switch
6. headlight relay
7. wiring connections
(of the entire lighting system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. storage box
2. front cowling
3. storage compartment
4. handlebar upper cover (with meter assem-
bly)
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112
EAS00738
1. Main, headlight, signaling system, and
CDI unit fuses
• Check the main, headlight, signal system,
and CDI unit fuses for continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main, headlight, signal system,
and CDI unit 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/pass switch
• Check the dimmer/pass switch for continu-
ity.
Refer to "CHECKING THE SWITCHES".
• Is the dimmer/pass switch OK?
8 - 25
ELEC
YES
• Clean the battery
terminals.
• Recharge or
replace the battery.
YES
Replace the
switch/immobilizer
antenna.
YES
Replace the dimmer/
pass switch.
– +
NO
NO
main
NO