Troubleshooting - Yamaha MBK MW125 2014 Service Manual

EAS30495

TROUBLESHOOTING

The starter motor fails to turn.
TIP
• Before troubleshooting, remove the following part(s):
1. Fuse box cover
2. Center cover
3. Storage box
4. Front upper panel
5. Lower leg shield
6. Upper handlebar cover
1. Check the fuses.
(Main and signaling system)
Refer to "CHECKING THE FUS-
ES" on page 8-59.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-60.
OK ↓
3. Check the starter motor operation.
Refer to "CHECKING THE START-
ER MOTOR OPERATION" on page
8-65.
NG ↓
4. Check the starter motor.
Refer to "CHECKING THE START-
ER MOTOR" on page 5-54.
OK ↓
5. Check the starting circuit cut-off re-
lay.
Refer to "CHECKING THE RE-
LAYS" on page 8-63.
OK ↓
6. Check the starter relay.
Refer to "CHECKING THE RE-
LAYS" on page 8-63.
OK ↓
7. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-55.
OK ↓
ELECTRIC STARTING SYSTEM
NG →
Replace the fuse(s).
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
OK →
Starter motor is OK. Perform the electric
starting system troubleshooting, starting
with step 5.
NG →
Repair or replace the starter motor.
NG →
Replace the starting circuit cut-off relay.
NG →
Replace the starter relay.
NG →
Replace the main switch.
8-8