1C
Engine Coolant Temperature (ECT) Sensor Inspection
2) Immerse temperature sensing part of ECT sensor in water and measure resistance between sensor terminal (1) and (2) while heating water gradually.
If measured resistance doesn’t show such characteristic as shown, replace ECT sensor.
ECT sensor resistance
Water temperature °C (°F) Resistance (kΩ)
25 (77) 2.140 – 2.364
50 (122) 0.770 – 0.850
80 (176) 0.272 – 0.288
[A]: Resistance
[B]: Temperature