Yamaha 2005 MT-01, Service Manual

Page: 332 / 435

LIGHTING SYSTEM
7-17
EAS27260
TROUBLESHOOTING
Any of the following fail to light: headlight (high beam), headlight (low beam), high beam indicator light,
taillight, license plate light, auxiliary light or meter light.
NOTE:
• Before troubleshooting, remove the following part(s):
1. Seat
2. Fuel tank
3. Air filter case
4. Headlight assembly
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
7-92.
Replace the bulb(s) and bulb socket(s).
2. Check the fuses.
(Main, headlight, signaling system,
parking lighting, and ECU)
Refer to “CHECKING THE FUSES”
on page 7-93.
Replace the fuse(s).
3. Check the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 7-94. • Clean the battery terminals.
• Recharge or replace the battery.
4. Check the main switch.
Refer to “CHECKING THE
SWITCHES” on page 7-89. Replace the main switch/immobilizer unit.
5. Check the dimmer switch.
Refer to “CHECKING THE
SWITCHES” on page 7-89. Replace the left handlebar switch.
6. Check the pass switch.
Refer to “CHECKING THE
SWITCHES” on page 7-89. Replace the left handlebar switch.
7. Check the headlight relay.
Refer to “CHECKING THE
RELAYS” on page 7-96. Replace the headlight relay.