LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Yaris iA Standard Trans >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Control System (Service Information) >> Engine Coolant Temperature Sensor >> Removal >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Coolant Temperature Sensor: Removal: Procedure

  1. REMOVE ENGINE COOLANT TEMPERATURE SENSOR 
    1. Disconnect the negative battery cable.

      Refer to REMOVAL

    2. Drain the engine coolant.
    3. Pull out the evaporative hose No. 1 from the canister (charcoal canister assembly) and set it aside.
      GTY488296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Canister (Charcoal Canister Assembly)
      *b Evaporative Hose No. 1
      *c Vehicle Front
    4. While pressing the clip tabs in the direction of the arrows (1) shown in the figure, push out the clip in the direction of the arrow (2) shown in the figure and remove the clip.
      GTY494885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Clip
      *b Vehicle Front
      *c Connector
    5. Disconnect the ECT sensor No. 1 connector.
    6. Remove the ECT sensor No. 1 using the SST.
      GTY492968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a ECT Sensor No. 1
      *b Vehicle Front
      N*m (kgf*cm, ft.*lbf): Specified torque
      Non-reusable part
      • SST: 49D015001 
    7. Refill the engine coolant.

      Refer to REPLACEMENT

  2. REMOVE ENGINE COOLANT TEMPERATURE SENSOR NO. 2 
    1. Disconnect the negative battery cable.

      Refer to REMOVAL

    2. Lift up the vehicle.
    3. Remove the front under cover No. 1.

      Refer to REMOVAL

    4. Drain the engine coolant.

      Refer to REPLACEMENT

    5. Disconnect the ECT sensor No. 2 connector.
    6. Remove the ECT sensor No. 2 using the SST.
      GTY486908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a ECT Sensor No. 2
      *b Vehicle Front
      N*m (kgf*cm, ft.*lbf): Specified torque
      Non-reusable part
      • SST: 49D015001 
    7. Refill the engine coolant.

      Refer to REPLACEMENT