ENGINE COOLANT TEMPERATURE SENSOR CHECK




 1.
caution Do not tilt the special tool engine coolant temperature sensor wrench (MB992042) as the engine coolant temperature sensor connector may be damaged.
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)]
note The value in square brackets is only advisory.
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: Loctite 262, THREEBOND 1324N or 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