Troubleshooting - Yamaha YZF-R15 Service Manual

TROUBLESHOOTING

NOTE:
• Before troubleshooting, remove the following part(s):
1. Seat
2. Left and right front panel
3. Headlight lens unit
1. Check the fuse.
Refer to "CHECKING THE FUSE"
on page 8-61.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY " on
page 8-61.
OK ↓
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
4. Check the radiator fan motor.
Refer to "CHECKING THE RADIA-
TOR FAN MOTOR" on page 8-71.
OK ↓
5. Check the radiator fan motor relay.
Refer to "CHECKING THE RE-
LAYS" on page 8-64.
OK ↓
6. Check the coolant temperature sen-
sor.
Refer to "CHECKING THE COOL-
ANT TEMPERA TURE SENSOR "
on page 8-71.
OK ↓
7. Check the entire cooling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-25.
OK ↓
Replace the ECU.
NG →
Replace the fuse.
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Replace the main switch.
NG →
Replace the radiator fan motor.
NG →
Replace the radiator fan motor relay.
NG →
Replace the coolant temperature sensor.
NG →
Properly connect or repair the cooling sys-
tem wiring.
8-27
COOLING SYSTEM