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Home >> Plymouth >> 1994 >> Laser RS, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Coolant Temperature Sensor (CTS)
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Coolant Temperature Sensor (CTS)

CTS is located on thermostat housing. CTS monitors coolant temperature and sends a voltage signal to ECM. CTS has a built-in thermistor, whose resistance varies according to coolant temperature. ECM determines engine temperature based on output voltage of CTS to provide optimum mixture enrichment when engine is cold.