Checking The Coolant Temperature Sensor; Checking The Throttle Position Sensor - Yamaha 2009 YZF-R1 (Y) Service Manual

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-
25.
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)
temperature sensor
ELECTRICAL COMPONENTS
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a. Connect the pocket tester (Ω × 100) to the
coolant temperature sensor as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
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, then let it cool
down to the specified temperature.
e. Measure the coolant temperature sensor
resistance.
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EAS14B1086
CHECKING THE THROTTLE POSITION
SENSOR
1. Remove:
• Throttle position sensor
(from the throttle body)
2. Check:
• Throttle position sensor maximum resis-
tance
Out of specification → Replace the throt-
tle position sensor.
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