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How to replace Coolant Temperature Sensor on 2003 Mitsubishi Outlander?

The procedure is as below :---


What is the operation of coolant sensor :--


Operation


A 5-volt voltage is applied to the Engine Coolant Temperature (ECT) sensor output terminal from the ECM/PCM via the resistor in the ECM/PCM. The ground terminal is grounded with ECM/PCM. The engine coolant temperature sensor is a negative temperature coefficient type of resistor. It has the characteristic that when the engine coolant temperature rises the resistance decreases. The engine coolant temperature sensor output voltage increases when the resistance increases and decreases when the resistance decreases.



Coolant sensor :--

Removal & Installation


  1. Disconnect the negative battery cable.
  2. Drain the engine coolant to a level below the intake manifold.
  3. Unplug the sensor wiring harness.
  4. Unplug the ECT sensor electrical connector
  5. Unthread and remove the sensor from the engine. Use a deep socket and an extension to reach the ECT sensor, remove the ECT sensor from the thermostat housing

To install:

  1. Coat the threads of the sensor with a suitable sealant and thread into the housing.
  2. Tighten the sensor to 22 ft. lbs. (30 Nm) for all except 1995-98 2.0L non-turbo engines. For 1995-98 2.0L non-turbo engines, tighten the sensor to 5 ft. lbs. (7 Nm).
  3. Refill the cooling system to the proper level.
  4. Attach the electrical connector to the sensor securely.
  5. Connect the negative battery cable.
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