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.
2008 Toyota Prius BaseFACTORY OEM SERVICE PROCEDURE
Engine Coolant Temperature Sensor: Inspection
- INSPECT ENGINE COOLANT TEMPERATURE SENSOR
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the resistance of the sensor.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Condition Specified Condition 1 - 2 20°C (68°F) 2.32 to 2.59 kΩ 1 - 2 80°C (176°F) 0.310 to 0.326 kΩ NOTE: If checking the sensor in water, be careful not to allow water to contact the terminals. After checking, dry the sensor.
- Measure the resistance of the sensor.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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