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.
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HOMESERVICE MANUALSTOYOTA2001HIGHLANDER 2WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)TESTING AND INSPECTION
2001 Toyota Highlander 2WD L4-2.4L (2AZ-FE)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
2001 Toyota Highlander 2WD L4-2.4L (2AZ-FE)SECTION Testing and Inspection
ENGINE COOLANT TEMPERATURE SENSOR [89422G / 98-5]
Resistance inspection.
Using an ohmmeter, measure the resistance between each terminal.
Resistance:
Approx. 20 °C (68 °F) 2.32 - 2.59 Kohms
Approx. 80 °C (176 °F) 0.310 - 0.326 Kohms
NOTE: In case of checking the water temperature sensor in the water, be careful not to allow water to go into the terminals, and after checking, wipe out the sensor.
RENDER: 1.0x
NO RELATED
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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.