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 MANUALSTOYOTA2009YARIS BASE, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEM (1NZ-FE)ENGINE COOLANT TEMPERATURE SENSORINSTALLATION
2009 Toyota Yaris Base, 4D Sedan, Automatic
Engine Coolant Temperature Sensor: Installation
2009 Toyota Yaris Base, 4D Sedan, AutomaticSECTION Installation
- INSTALL ENGINE COOLANT TEMPERATURE SENSOR
- Provisionally install the engine coolant temperature sensor through a new gasket.
- Using SST, tighten the engine coolant temperature sensor.
SST 09817-33190
Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf)
- Connect the engine coolant temperature sensor connector.
- CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf)
- ADD ENGINE COOLANT (See REPLACEMENT )
- CHECK FOR ENGINE COOLANT LEAKAGE (See ON-VEHICLE INSPECTION )
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.