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HOMESERVICE MANUALSTOYOTA2009YARIS S, 4D HATCHBACKREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEM (1NZ-FE)ENGINE COOLANT TEMPERATURE SENSORINSTALLATION
2009 Toyota Yaris S, 4D Hatchback

Engine Coolant Temperature Sensor: Installation

2009 Toyota Yaris S, 4D HatchbackSECTION Installation
  1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR 
    1. Provisionally install the engine coolant temperature sensor through a new gasket.
    2. Using SST, tighten the engine coolant temperature sensor.

      SST 09817-33190 

      Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) 

      Fig 1: Locating Engine Coolant Temperature Sensor
      G04828396Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the engine coolant temperature sensor connector.
  2. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 

    Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) 

  3. ADD ENGINE COOLANT  (See REPLACEMENT )
  4. CHECK FOR ENGINE COOLANT LEAKAGE  (See ON-VEHICLE INSPECTION )
    Fig 2: Locating Engine Coolant Temperature Sensor Connector
    G04828395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

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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.