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Home >> Chrysler >> 2011 >> Town & Country V6-3.6L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Coolant Temperature Sensor/Switch (For Computer) >> Description and Operation >> Engine Coolant Temperature Sensor - Operation
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Engine Coolant Temperature Sensor - Operation






OPERATION

The coolant temperature (ECT) sensor is a negative temperature coefficient (NTC) thermistor (resistance varies inversely with temperature). This means at cold temperatures its resistance is high so the voltage signal will be high. As coolant temperature increases, resistance decreases and the signal voltage will be low. This allows the sensor to provide an analog voltage signal to the ECM.

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