Yamaha FJR1300N 2001 Service Manual page 566

EAS00811
7. Coolant temperature sensor
• Remove the coolant temperature sensor
from the thermostat assembly inlet pipe.
• Connect the pocket tester (Ω × 1) to the
coolant temperature sensor 1 as shown.
• Immerse the coolant temperature sensor in
a container filled with coolant 2.
NOTE:
Make sure that the coolant temperature sen-
sor terminals do not get wet.
• Place a thermometer 3 in the coolant.
• Slowly heat the coolant, then let it cool
down to the specified temperature.
• Check the coolant temperature sensor for
continuity at the temperatures indicated
below.
Coolant temperature
Test step
Coolant temperature
sensor
1 Less than 105 °C
2 More than 105 °C
3 More than 100 °C
4 Less than 100 °C
Test steps 1 & 2: Heating phase
Test steps 3 & 4: Cooling phase
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.
Coolant temperature sensor
20 Nm (2.0 m · kg)
Three bond sealock
COOLING SYSTEM
Continu-
ity
NO
YES
YES
NO
®
10
8 - 50
100 °C
È The coolant temperature sensor circuit is open
and the radiator fan is off.
É The coolant temperature sensor circuit is
closed and the radiator fan is on.
• Does the
coolant temperature sensor
properly as described above?
YES
– +
ELEC
105 °C
operate
NO
Replace the
coolant
.
temperature sensor