Yamaha 2014 MT-07 - Checking the Radiator Fan Motor; Checking the Coolant Temperature Sensor

ELECTRICAL COMPONENTS
8-138
EAS30577
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.
c. Measure the radiator fan motor movement.
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EAS30578
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
• Coolant temperature sensor
Refer to “CYLINDER HEAD” on page 5-25.
WARNING
EWA14130
• 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.
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a. Connect the pocket tester (Ω × 1 k) to the
coolant temperature sensor as shown.
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. Heat the coolant or let it cool down to the
specified temperatures.
e. Measure the coolant temperature sensor re-
sistance.
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3. Install:
• Coolant temperature sensor
• Positive tester probe
Blue “1”
• Negative tester probe
Black “2”
1
12
L
B
Coolant temperature sensor re-
sistance
2510–2780 Ω@20 °C (2510–2780
Ω@68 °F)
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
T
R
.
.
Coolant temperature sensor
16 Nm (1.6 m·kgf, 12 ft·lbf)