Yamaha FZ1-N Service Manual page 353

EAS27320
TROUBLESHOOTING
NOTE:
• Before troubleshooting, remove the following part(s):
1 Rider and passenger seat
2 Fuel tank
3 Air filter case
1 Check the fuses.
(Main, ignition and radiator fan
motor)
Refer to "CHECKING THE FUSES"
on page 8-97.
OK↓
2 Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-97.
OK↓
3 Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-93.
OK↓
4 Check the radiator fan motor (left
and right).
Refer to "CHECKING THE RADIA-
TOR FAN MOTOR" on page 8-108.
OK↓
5 Check the radiator fan motor relay.
Refer to "CHECKING THE
RELAYS" on page 8-100.
OK↓
6 Check the coolant temperature.
Refer to "CHECKING THE COOL-
ANT TEMPERATURE SENSOR"
on page 8-108.
OK↓
7 Check the entire cooling system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-27.
OK↓
This circuit is OK.
NG→
Replace the fuse(s).
NG→
• Clean the battery terminals.
• Recharge or replace the battery.
NG→
Replace the immobilizer kit.
NG→
The radiator fan motor is faulty and
must be replaced.
NG→
Replace the radiator fan motor relay.
NG→
Replace the coolant temperature sen-
sor.
NG→
Properly connect or repair the cooling
system's wiring.
8-29
COOLING SYSTEM