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ENGINE COOLANT TEMPERATURE (ECT) SENSOR CONSTRUCTION/OPERATION

BHE014018840T02

• Installed on the thermostat case.

1 | ECT sensor
2 | Illustration shows 13B-MSP (High power)

• A thermistor type is used and the resistance changes according to the ECT.

• As shown in the characteristics graph, when the ECT is high, the resistance is small, and when the ECT is low, the resistance is large.

ECT Sensor Characteristics

1 | Resistance (kilohm)
2 | ECT

System Diagram

1 | ECT sensor
2 | PCM
3 | CPU