Component Function Check
- CHECK ENGINE COOLANT TEMPERATURE (ECT) SENSOR
- Turn ignition switch OFF.
- Disconnect ECT sensor harness connector.
- Remove ECT sensor. Refer to Exploded View .
- Check resistance between ECT sensor terminals by heating with hot water as shown in the figure below.
ECT sensor
Condition
Resistance (k?)
Terminal
1
2
Temperature [°C (°F)]
20 (68)
2.10 - 2.90
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
Proceed to Diagnosis Procedure .