Checking The Radiator Fan Motor; Checking The Coolant Temperature Sensor - Yamaha 2007 XP500 Service Manual

Tester positive probe
White "1"
Negative tester probe
Black/Blue "2"
b. Turn the main switch to "ON".
c. Elevate the rear wheel and slowly rotate it.
d. Measure the voltage (5 V) of White and black/
blue. With each full rotation of the rear wheel,
the voltage reading should cycle from 0 V to
5 V to 5 V to 0 V.
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EAS28250

CHECKING THE RADIATOR FAN MOTOR

1. Check:
Radiator fan motor
G
Faulty/rough movement → Replace.
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a. Disconnect the radiator fan motor coupler
from the wire harness.
b. Connect the battery (DC 12 V) as shown.
Positive tester probe
Blue "1"
Negative tester probe
Black "2"
c. Measure the radiator fan motor movement.
ELECTRICAL COMPONENTS
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EAS28260
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
Coolant temperature sensor
G
Refer to "THERMOSTAT" on page 6-5.
EWA14130
WARNING
Handle the coolant temperature sensor
G
with special care.
Never subject the coolant temperature sen-
G
sor to strong shocks. If the coolant temper-
ature sensor is dropped, replace it.
2. Check:
Coolant temperature sensor resistance
G
Out of specification → Replace.
Coolant temperature sensor re-
sistance
2.32–2.59 kΩ at 20 °C (68 °F)
0.310–0.326 kΩ at 80 °C (176 °F)
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a. Connect the pocket tester (Ω× 1k) to the cool-
ant temperature sensor "1" as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Tester positive probe
Green/Red
Negative tester probe
Black/Blue
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