Troubleshooting - Yamaha 2010 XMAX YP125R Service Manual

EAS27570

TROUBLESHOOTING

If the fuel pump fails to operate.
TIP
• Before troubleshooting, remove the following part(s):
1. Storage box
2. Front cowling
1. Check the fuses.
(Main, ECU, and ignition)
Refer to "CHECKING THE FUS-
ES" on page 8-77.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-78.
OK ↓
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-73.
OK ↓
4. Check the fuel pump operation.
Refer to "CHECKING THE FUEL
PRESSURE" on page 7-3.
OK ↓
5. Check the entire fuel pump system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-57.
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 fuel tank (with fuel pump).
NG →
Properly connect or repair the fuel pump
system wiring.
8-59
FUEL PUMP SYSTEM