ENGINE COOLANT TEMPERATURE (ECT) SENSOR CONSTRUCTION/OPERATION [L3 R.H.D.]

BUE014018841N02


1	ECT sensor
2	Exhaust manifold

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

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


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

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