ENGINE COOLANT TEMPERATURE (ECT) SENSOR CONSTRUCTION/OPERATION [L8, LF, L3]

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1	ECT sensor
2	Exhaust manifold

• Installed on the water bypass tube (directly below the ignition coil).

• The ECT is a thermistor type, the resistance changes according to the engine coolant temperature.


1	ECT sensor
2	ECT sensor resistance characteristic
3	Resistance
4	Engine coolant temperature
5	Large
6	Small
7	Low
8	High

• The resistance decreases if the engine coolant temperature increases, and increases if the engine coolant temperature decreases.