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Home >> Mazda >> 2021 >> CX-3 FWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Coolant Temperature (ECT) Sensor Removal/Installation >> Without Coolant Control Valve >> ECT sensor No. 1
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ECT sensor No. 1

  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  2. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  3. Pull out the evaporative hose No. 1 from the catch tank and set it aside.
    G11435603Courtesy of MAZDA MOTORS CORP.
  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.
    G11435604Courtesy of MAZDA MOTORS CORP.
  5. Disconnect the ECT sensor No. 1 connector.
  6. Remove the ECT sensor No. 1 using the SST.
    Fig 1: ECT Sensor No. 1 With Torque Specification
    G11435605Courtesy of MAZDA MOTORS CORP.
  7. Install in the reverse order of removal.
  8. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
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