Troubleshooting - Yamaha BT1100 2002 Service Manual

EASB0037

TROUBLESHOOTING

The fuel pump fails to operate.
Check:
1. Main, and ignition fuses
2. Battery
3. Main switch
4. Engine stop switch
5. Starting circuit cutoff relay (fuel pump relay)
6. Fuel pump
7. 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 ignition fuses
• Check the main and ignition fuses for conti-
nuity.
Refer to "CHECKING THE FUSES" in
Chapter 3.
• Are the main and ignition fuses OK?
YES NO
Replace the fuse(-s).
FUEL PUMP SYSTEM
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
EAS00750
4. Engine stop switch
• Check the engine stop switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the engine stop switch OK?
YES
7-43
ELEC
NO
• Clean the battery ter-
minals.
• Recharge or replace
the battery.
NO
Replace the main
switch.
NO
Replace the right han-
dlebar switch.