Checking The Radiator Fan Motor Circuit Breaker - Yamaha Grizzly550 User Manual

EAS28P1001
CHECKING THE RADIATOR FAN MOTOR
CIRCUIT BREAKER
1. Remove:
• Radiator fan motor circuit breaker
(from the wire harness)
TIP
The radiator fan motor circuit breaker "1" is at-
tached to the wire harness with black tape near
the tail/brake light connectors "2".
2. Check:
• Radiator fan motor circuit breaker resistance
Out of specification → Replace the radiator
fan motor circuit breaker.
Radiator fan motor circuit break-
er resistance
Zero Ω at 20 °C (68 °F)
M MMM M MMM M M MMM M M MMM M
a. Connect the pocket tester (Ω × 1) to the radi-
ator fan motor circuit breaker as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
b. Measure the radiator fan motor circuit break-
er resistance.
L LLL L LLL L L LLL L L LLL L
1
2
M MMM M M MMM M MMM
L LLL L L LLL L LLL
9-95
ELECTRICAL COMPONENTS
EAS28260
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
• Coolant temperature sensor
EWA14130
WARNING
• Handle the coolant temperature sensor
with special care.
• Never subject the coolant temperature sen-
sor to strong shocks. If the coolant temper-
ature sensor is dropped, replace it.
2. Check:
• Coolant temperature sensor resistance
Out of specification → Replace.
Coolant temperature sensor re-
sistance
2.45 kΩ at 20 °C (68 °F)
290–354 Ω at 80 °C (176 °F)
M MMM M MMM M M MMM M M MMM M
a. Connect the pocket tester (Ω × 100) to the
coolant temperature sensor terminals as
shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
3
1
b. Immerse the coolant temperature sensor "1"
in a container filled with coolant "2".
TIP
Make sure the coolant temperature sensor ter-
minals do not get wet.
c. Place a thermometer "3" in the coolant.
d. Slowly heat the coolant, and then let it cool
down to the specified temperature.
e. Measure the coolant temperature sensor re-
sistance.
L LLL L LLL L L LLL L L LLL L
M MMM M M MMM M MMM
2
L LLL L L LLL L LLL