Yamaha FJR1300A(D) Service Manual page 554

EAS27570
TROUBLESHOOTING
If the fuel pump fails to operate.
TIP
• Before troubleshooting, remove the following part(s):
1. Side cowlings
2. Front cowling assembly
3. Fuel tank
4. T-bar
1. Check the fuses.
(Main, ignition, and fuel injection
system)
Refer to "CHECKING THE FUS-
ES" on page 8-173.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-174.
OK ↓
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-169.
OK ↓
4. Check the start/engine stop switch.
Refer to "CHECKING THE
SWITCHES" on page 8-169.
OK ↓
5. Check the relay unit (fuel pump re-
lay).
Refer to "CHECKING THE RE-
LAYS" on page 8-177.
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" on
page 8-103.
OK ↓
Replace the ECU. Refer to "RE-
PLACING THE ECU (engine control
unit)" on page 8-174.
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 replace the wire har-
ness.
8-105
FUEL PUMP SYSTEM