COOLING AND LUBRICATION SYSTEM 8-13
INSPECTION
• Check the engine coolant temperature by testing it at the
bench as shown in the figure. Connect the temperature sen-
sor
1 to a circuit tester and place it in the oil contained in a
pan, which is placed on a stove.
• Heat the water to raise its temperature slowly and read the
column thermometer
2 and the ohmmeter.
• If the temperature sensor ohmic valve does not change in the
proportion indicated, replace it with a new one.
Temperature sensor specification
If the resistance noted to show infinty or too much different resis-
tance value, replace the temperature sensor with a new one.
INSTALATION
• Tighten the engine coolant temperature sensor to the speci-
fied torque.
! Engine coolant temperature sensor:
18 N·m (1.8 kgf-m, 13.0 lb-ft)
Temperature Standard resistance
20°C (68°F) Approx. 2.45 kΩ
50°C (122°F) Approx. 0.811 kΩ
80°C (176°F) Approx. 0.318 kΩ
110°C (230°F) Approx. 0.142 kΩ
* Take special care when handling the temperature
sensor. It may cause damage if it gets a sharp
impact.
* Do not contact the engine coolant temperature sen-
sor
1 and the column thermometer
2 with a pan.
Replace the removed sealing washer
1 with a new
one.
Oil
Ω
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