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 engine coolant temperature sensor immersed in hot water, check resistance. 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: LOCTITE 262, Three bond 1324N or equivalent 5.Tighten the engine coolant temperature sensor to the specified torque, using engine coolant temperature sensor wrench, special tool (MB992042). Tightening torque: 30 ± 9 N·m