ENGINE COOLANT TEMPERATURE (ECT) SENSOR CONSTRUCTION/OPERATION [MZ-CD 1.6 (Y6) (EURO5 emission level)]
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• The ECT sensor is located in the thermostat housing on the cylinder head.
• The ECT sensor is a resistor with a negative temperature coefficient (NTC) resistor.
• Using the voltage drop across the ECT sensor, the PCM calculates the coolant temperature.