Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Honda >> 2003 >> Civic Si >> Repair and Diagnosis >> Engine Performance >> System >> Fuel System & Emissions System (Hatchback) >> System Description >> PGM-FI System >> Engine Coolant Temperature (ECT) Sensor

Engine Coolant Temperature (ECT) Sensor

The ECT sensor is a temperature dependent resistor (thermistor). The resistance of the thermistor decreases as the engine coolant temperature increases.

Fig 1: Identifying Engine Coolant Temperature (ECT) Sensor
G01399303Courtesy of AMERICAN HONDA MOTOR CO., INC.