Troubleshooting - Yamaha 2005 BT1100 Supplementary Service Manual

EASB0039

TROUBLESHOOTING

The carburetor heater fails to operate.
Check:
1. Main and carburetor heater fuses
2. Battery
3. Main switch
4. Thermo
5. Carburetor heater
6. Wiring (of the entire charging system)
NOTE:
• Before troubleshooting, remove the following
part(-s):
1) Seat
2) Side covers
3) Fuel tank (lift)
4) Storage compartment/battery cover
• Troubleshoot with the following special tool(-s).
Pocket tester
90890-03112
EAS00738
1. Main and carburetor heater fuses
• Check the main and carburetor heater fuses
for continuity.
Refer to "CHECKING THE FUSES" in
Chapter 3.
• Are the main, and carburetor heater fuses
OK?
YES
CARBURETOR HEATER SYSTEM
NO
Replace the fuse(-s).
EAS00739
2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING THE
BATTERY" in Chapter 3.
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
EASB0040
4. Thermo switch
• Remove the thermo switch from the thermo
switch plate.
• Connect the pocket tester to the thermo
switch lead.
Tester (+) lead
Brown/Yellow terminal 1
¡
Tester (–) lead
Brown/Black 2
105
ELEC
• Clean the battery ter-
minals.
• Recharge or replace
the battery.
Replace the main
switch.
¡
NO
NO