Water Temperature Sensor - HYOSUNG MS3 250 Sercie Manual

WATER TEMPERATURE
SENSOR
◉ ◉ REMOVAL
● Lift and support the side cover with the side cover
stay. (Refer to page 2-2)
● Drain engine coolant. (Refer to page 2-16)
● Disconnect the WT (Water Temperature) sensor
lead wire coupler.
● Remove the WT sensor ① .
◉ ◉ INSPECTION
● Check the engine coolant temperature by testing it
at the bench as shown in the figure. Connect the
WT sensor ①
to a circuit tester and place it in the
WATER contained in a pan, which is placed on a
stove.
● Heat the water to raise its temperature slowly and
read the column thermometer ②
WT sensor resistance
Engine Coolant Temp.
0 ℃ (32 ℉ )
20 ℃ (68 ℉ )
40 ℃ (104 ℉ )
60 ℃ (140 ℉ )
80 ℃ (176 ℉ )
Multi circuit tester set : 09900-25008
If the resistance noted to show infinity or too much
different resistance value, replace the WT sensor
with a new one.
◉ ◉ INSTALLATION
Install the WT sensor in the reverse order of removal.
Pay attention to the following points :
● Install a new O-ring ③
to the O-ring.
● Tighten the WT sensor to the specified torque.
WT sensor : 18 N∙ ∙ m (1.8 kgf∙ ∙ m)
● Pour engine coolant. (Refer to page 2-16)
● Bleed air from the cooling circuit.
(Refer to page 2-17)
and the ohmmeter.
Resistance (To ECU)
㏀
Approx. 5.790
㏀
Approx. 2.450
㏀
Approx. 1.148
㏀
Approx. 0.586
㏀
Approx. 0.322
and apply engine coolant
①
②
①
CAUTION
● ● Take special care when handling the WT sen-
sor. It may cause damage if it gets a sharp
impact.
● ● Do not contact the WT sensor ① ①
umn thermometer ② ②
③
COOLING SYSTEM 6-8
Water
and the col-
with a pan.