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Home >> Mitsubishi >> 2003 >> Lancer Evolution >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Engine Coolant Temperature Sensor
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Engine Coolant Temperature Sensor

Engine Coolant Temperature (ECT) sensor converts coolant temperature to electrical signal for use by PCM. ECT input is used for fuel injection pulse width modulation, idle air control and ignition timing control by PCM. PCM can not go into closed loop fuel system management until ECT input indicates engine is at normal operating temperature.

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