EAS27570
TROUBLESHOOTING
If the fuel pump fails to operate.
TIP
• Before troubleshooting, remove the following part(s):
1. Rider seat
2. Air scoop
3. Fuel tank cover
4. Fuel tank
1. Check the fuses.
(Main, ignition and fuel injection
system)
Refer to "CHECKING THE FUSES"
on page 8-93.
OK
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-94.
OK
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-89.
OK
4. Check the start/engine stop switch.
Refer to "CHECKING THE
SWITCHES" on page 8-89.
OK
5. Check the relay unit (fuel pump re-
lay).
Refer to "CHECKING THE RE-
LAYS" on page 8-97.
OK
6. Check the fuel pump.
Refer to "CHECKING THE FUEL
PUMP OPERATION" on page 7-3.
OK
7. Check the entire fuel pump sys-
tem's wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-81.
OK
Replace the ECU.
Refer to "REPLACING THE ECU (en-
gine control unit)" on page 8-93.
FUEL PUMP SYSTEM
Replace the fuse(s).
NG
• Clean the battery terminals.
• Recharge or replace the battery.
NG
Replace the main switch.
NG
Replace the right handlebar switch.
NG
Replace the relay unit.
NG
Replace the fuel pump.
NG
Properly connect or repair the fuel pump
system's wiring.
NG
8-83