ENGINE COOLANT TEMPERATURE SENSOR CHECK




 1.Remove the engine coolant temperature sensor using the special tool engine coolant temperature sensor wrench (MB992042).

2.With temperature sensing portion of the engine coolant temperature sensor immersed in the hot water, measure the resistance between connector terminals.
Standard value:
    14 - 17 kΩ (at -20°C)
    5.1 - 6.5 kΩ (at 0°C)
    2.1 - 2.7 kΩ (at 20°C)
    0.9 - 1.3 kΩ (at 40°C)
    0.48 - 0.68 kΩ (at 60°C)
    0.26 - 0.36 kΩ (at 80°C)
3.If the resistance deviates from the standard value greatly, replace the sensor.

4.Apply the sealant over the screw sections on the engine coolant temperature sensor.
Specified sealant: Three bond 1324N, Loctite 262 or exact equivalent
5.With the special tool engine coolant temperature sensor wrench (MB992042) tighten the engine coolant temperature sensor to the specified torque.
Tightening torque: 30 ± 9 N·m