Nissan Sentra B18 (2020-2025) Service Manual: Engine Coolant Temperature Sensor
Component Inspection
Component Inspection
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CHECK ENGINE COOLANT TEMPERATURE SENSOR
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Turn ignition switch OFF.
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Disconnect engine coolant temperature sensor harness connector.
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Remove engine coolant temperature sensor. Refer to Exploded View.
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Check the resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure.
ECT sensor
Condition
Resistance
Terminal
1
2
Temperature [°C (°F)]
20 (68)
2.37 – 2.63 kΩ
50 (122)
0.68 – 1.00 kΩ
90 (194)
0.236 – 0.260 kΩ
Is the inspection result normal?
YES >>INSPECTION END
NO >>Replace engine coolant temperature sensor. Refer to Exploded View.
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