Troubleshooting - Yamaha YP250R 2005 Service Manual

EAS00757

TROUBLESHOOTING

The starter motor fails to turn.
Check:
1. main, ignition, and signaling system fuses
2. battery
3. starter motor
4. starting circuit cut-off relay
5. starter relay
6. main switch
7. brake light switch (front and rear)
8. sidestand switch
9. start switch
10.wiring connections
(of the entire starting 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, ignition, and signaling system fuses
• Check the main, ignition, and signaling
system fuses for continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main, ignition, and signaling sys-
tem fuses OK?
YES
ELECTRIC STARTING SYSTEM
NO
Replace the fuse(s).
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?
EAS00758
3. Starter motor
• Connect the positive battery terminal 1
and starter motor lead 2 with a jumper
lead 3.
WARNING
_
• A wire that is used as a jumper lead
must have at least the same capacity or
more as that of the battery lead, other-
wise the jumper lead may burn.
• This check is likely to produce sparks,
therefore make sure nothing flammable
is in the vicinity.
• Does the starter motor turn?
8 - 14
ELEC
YES
• Clean the battery
terminals.
• Recharge or
replace the battery.
YES
Repair or replace the
starter motor.
– +
NO
NO