Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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.
Terminals
Condition
Resistance (kOhm)
1 and 2
Temperature [ deg.C (deg.F)]
20 (68)
2.1 - 2.9
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
Is the inspection result normal?
YES
GO TO 2.
NO
Proceed to Diagnosis Procedure .
- CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to Intermittent Incident .
Is the inspection result normal?
YES
INSPECTION END
NO
Proceed to Diagnosis Procedure .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.