Troubleshooting - Yamaha MBK MW125 2014 Service Manual

EAS30501

TROUBLESHOOTING

• Any of the following fail to light: turn signal light, brake light or indicator light.
• The horn fails to sound.
• The fuel meter fails to come on.
• The speedometer fails to operate.
TIP
• Before troubleshooting, remove the following part(s):
1. Fuse box cover
2. Center cover
3. Lower leg shield
4. Storage box
5. Upper handlebar cover
6. Rear side covers
1. Check the fuses.
(Main, headlight, signaling system
and backup)
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 main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-55.
OK ↓
4. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Check the condition of each of the sig-
naling system circuits. Refer to
"Checking the signaling system".
Checking the signaling system
The horn fails to sound.
1. Check the horn switch.
Refer to "CHECKING THE
SWITCHES" on page 8-55.
OK ↓
NG →
Replace the fuse(s).
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Replace the main switch.
NG →
Properly connect or replace the wire har-
ness.
NG →
• The horn switch is faulty.
• Replace the left handlebar switch.
8-21
SIGNALING SYSTEM