Troubleshooting - Yamaha CYGNUS RAY ZR 2022 Supplementary Service Manual

EAS30514

TROUBLESHOOTING

If the fuel pump fails to operate.
TIP
• Before troubleshooting, remove the following part(s):
1. Battery cover
2. Front side covers
3. Footrest board assemblies
4. Fuel tank
1. Check the fuses.
(Main, ignition and fuel injection
system)
Refer to "CHECKING THE FUSES"
on base manual page no. 7-95.
OK
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
base manual page no. 7-96.
OK
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on base manual page
no. 7-92.
OK
4. Check the fuel pump.
Refer to "CHECKING THE FUEL
PRESSURE" on base manual page
no. 6-6.
OK
5. Check the entire fuel pump system
wiring.
Refer to "CIRCUIT DIAGRAM (For
disc)" on page 5-49.
OK
Replace the SGCU. Refer to "RE-
PLACING THE SGCU (Starter genera-
tor control unit)" on base manual page
no. 7-95.
FUEL PUMP SYSTEM
NG
Replace the fuse(s).
NG
• Clean the battery terminals.
• Recharge or replace the battery.
NG
Replace the main switch.
NG
Replace the fuel pump.
NG
Properly connect or replace the wire har-
ness.
5-53
ELEC