Yamaha YZF-R125, Service Manual

Page: 288 / 356

LIGHTING SYSTEM
8-17
EAS27260
TROUBLESHOOTING
Any of the following fail to light: headlight, high beam indicator light, taillight, license plate light, auxiliary
light or meter light.
NOTE:
• Before troubleshooting, remove the following part(s):
1. Seats
2. Fuel tank
NG
→
OK
↓
NG
→
OK
↓
NG
→
OK
↓
NG
→
OK
↓
NG
→
OK
↓
NG
→
OK
↓
NG
→
OK
↓
1. Check the condition of each bulb
and bulb socket.
Refer to “CHECKING THE BULBS
AND BULB SOCKETS” on page
8-62.
Replace the bulb(s) and bulb socket(s).
2. Check the fuses.
(Main, ignition, headlight, and sig-
naling system)
Refer to “CHECKING THE FUS-
ES” on page 8-63.
Replace the fuse(s).
3. Check the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 8-64.
• Refill battery fluid.
• Clean the battery terminals.
• Recharge or replace the battery.
4. Check the main switch.
Refer to “CHECKING THE
SWITCHES” on page 8-59. Replace the main switch.
5. Check the dimmer switch.
Refer to “CHECKING THE
SWITCHES” on page 8-59.
The dimmer switch is faulty. Replace the
left handlebar switch.
6. Check the pass switch.
Refer to “CHECKING THE
SWITCHES” on page 8-59.
The pass switch is faulty. Replace the left
handlebar switch.
7. Check the headlight relay.
Refer to “CHECKING THE RE-
LAYS” on page 8-66. Replace the headlight relay.
YamahaR125.COM