Yamaha 2005 BT1100 Supplementary Service Manual page 95

EASB0033
TROUBLESHOOTING
Any of the following fail to light: headlight,
high beam indicator light, license plate light
or meter light.
Check:
1. Main and headlight fuses
2. Battery
3. Main switch
4. Dimmer switch
5. Pass switch
6. Dimmer switch relay
7. Igniter unit
8. Wiring (of the entire charging system)
NOTE:
• Before troubleshooting, remove the following
part(-s).
1) Seat
2) Side covers
3) Fuel tank (lift)
4) Cowling (lift forward)
5) Storage compartment/battery cover
• Troubleshoot with the following special tool(-s).
Pocket tester
90890-03112
EAS00738
1. Main and headlight fuses
• Check the main and headlight fuses for con-
tinuity.
Refer to "CHECKING THE FUSES" in
Chapter 3.
• Are the main and headlight fuses OK?
YES NO
Replace the fuse(-s).
LIGHTING SYSTEM
EAS00739
2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING THE
BATTERY" in Chapter 3.
Min. open-circuit voltage
12.8 V or more at 20 °C (68 °F)
• Is the battery OK?
YES
EAS00749
3. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
YES
EAS00784
4. Dimmer switch
• Check the dimmer switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the dimmer switch OK?
YES
87
ELEC
NO
• Clean the battery ter-
minals.
• Recharge or replace
the battery.
NO
Replace the main
switch.
NO
The dimmer switch
is faulty. Replace the
right handlebar
switch.