Yamaha FJR1300AS(X) Service Manual page 580

EAS27570
TROUBLESHOOTING
If the fuel pump fails to operate.
NOTE:
• Before troubleshooting, remove the following part(s):
1. Front cowling assembly
2. Fuel tank
3. T-bar
4. Storage compartment
1. Check the fuses.
(Main, ignition, and fuel injection
system)
Refer to "CHECKING THE FUS-
ES" on page 8-239.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-240.
OK ↓
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-233.
OK ↓
4. Check the engine stop switch.
Refer to "CHECKING THE
SWITCHES" on page 8-233.
OK ↓
5. Check the relay unit (fuel pump re-
lay).
Refer to "CHECKING THE RE-
LAYS" on page 8-243.
OK ↓
6. Check the fuel pump.
Refer to "CHECKING THE FUEL
PUMP BODY" on page 7-2.
OK ↓
7. Check the entire fuel pump system
wiring.
Refer to "CIRCUIT DIAGRAM (1/2)"
on page 8-99 and "CIRCUIT DIA-
GRAM (2/2)" on page 8-101.
OK ↓
Replace the ECU.
NG →
Replace the fuse(s).
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Replace the main switch/immobilizer unit.
NG →
Replace the right handlebar switch.
NG →
Replace the relay unit.
NG →
Replace the fuel pump assembly.
NG →
Properly connect or repair the fuel pump
system wiring.
8-103
FUEL PUMP SYSTEM