Yamaha YZF-R1B 2012 Service Manual page 539

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
c. Turn the main switch to "ON".
d. Elevate the rear wheel and slowly rotate it.
e. Measure the voltage. With each full rotation
of the rear wheel, the voltage reading
should cycle from 0.6 V to 4.8 V to 0.6 V to
4.8 V.
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EAS28250
CHECKING THE RADIATOR FAN MOTOR
1. Check:
• Radiator fan motor
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 or Green "1"
• Negative tester probe
Black "2"
email: info@motomatrix.co.uk
ELECTRICAL COMPONENTS
A. Right side
B. Left side
c. Measure the radiator fan motor movement.
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EAS28260
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
• Coolant temperature sensor
Refer to "CYLINDER HEAD" on page 5-
24.
EWA14130
WARNING
• Handle the coolant temperature sensor
with special care.
• Never subject the coolant temperature
sensor to strong shocks. If the coolant
temperature sensor is dropped, replace it.
2. Check:
• Coolant temperature sensor resistance
Out of specification → Replace.
Coolant
resistance
5.21–6.37 kΩ at 0 °C (32 ° F)
2.45 kΩ at 20 °C (68 °F)
290–354 Ω at 80 °C (176 °F)
8-142
temperature sensor