Troubleshooting - Yamaha YFM70RY Service Manual

EAS27320

TROUBLESHOOTING

The radiator fan motor fails to turn.
TIP
• Before troubleshooting, remove the following part(s):
1. Seat
2. Fuel tank top panel
3. Front panel
4. Front fender
1. Check the fuses.
(Main and ignition)
Refer to "CHECKING THE FUS-
ES" on page 8-61.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-62.
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 8-65.
OK ↓
6. Check the circuit breaker (fan mo-
tor).
Refer to "CHECKING THE RADIA-
TOR FAN MOTOR CIRCUIT
BREAKER" on page 8-71.
OK ↓
7. Check the coolant temperature sen-
sor.
Refer to "CHECKING THE COOL-
ANT TEMPERATURE SENSOR"
on page 8-72.
OK ↓
NG →
Replace the fuse(s).
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Replace the main switch.
NG →
The radiator fan motor is faulty and must
be replaced.
NG →
Replace the radiator fan motor relay.
NG →
Replace the radiator fan motor circuit
breaker.
NG →
Replace the coolant temperature sensor.
8-27
COOLING SYSTEM