Yamaha TMAX TECH MAX 2020 - Troubleshooting

8-43
COOLING SYSTEM
EAS30503
TROUBLESHOOTING
TIP
• Before troubleshooting, remove the following part(s):
1. Front cowling assembly
2. Storage box
3. Fuel tank
4. Footboard (right)
5. Rear side cowling assembly
1. Check the fuses.
(Main, ignition, radiator fan motor
and backup)
Refer to “CHECKING THE FUS-
ES” on page 8-93.
NG Replace the fuse(s).
OK
2. Check the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 8-94.
NG
• Clean the battery terminals.
• Recharge or replace the battery.
OK
3. Check the ignition system relay.
Refer to “CHECKING THE RE-
LAYS” on page 8-94.
NG Replace the ignition system relay.
OK
4. Check the radiator fan motor.
Refer to “CHECKING THE RADIA-
TOR FAN MOTOR” on page 8-
106.
NG Replace the radiator fan motor.
OK
5. Check the radiator fan motor relay.
Refer to “CHECKING THE RE-
LAYS” on page 8-94.
NG Replace the radiator fan motor relay.
OK
6. Check the coolant temperature
sensor.
Refer to “CHECKING THE COOL-
ANT TEMPERATURE SENSOR”
on page 8-107.
NG Replace the coolant temperature sensor.
OK
7. Check the entire cooling system’s
wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-39.
NG
Properly connect or replace the wire har-
ness.
OK