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Home >> Mazda >> 2022 >> CX-30 Turbo >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (VIN Y) >> Engine Coolant Temperature (ECT) Sensor Removal/Installation >> ECT Sensor No. 2
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ECT Sensor No. 2

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)] .)
  2. Remove the front under cover No. 1 and the front under cover No. 2. (See FRONT UNDER COVER No. 1 REMOVAL/INSTALLATION .) (See FRONT UNDER COVER No. 2 REMOVAL/INSTALLATION .)
  3. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  4. Disconnect the ECT sensor No. 2 connector.
  5. Disconnect the hoses shown in the figure.
    G14481030Courtesy of MAZDA MOTORS CORP.
  6. Remove the bolts shown in the figure and remove the water pipe. (See COOLING FAN MOTOR REMOVAL/INSTALLATION .)
    G14481031Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • If the vise is tightened with excessive force, it could deform or damage the water pipe. When securing the water pipe in a vise, be careful not to deform or damage the water pipe.
  7. Secure the water pipe in a vise.
    G14481032Courtesy of MAZDA MOTORS CORP.
  8. Remove ECT sensor No. 2 using the SST with the water pipe secured using a wrench.
    Fig 1: ECT Sensor No. 2 With Torque Specification
    G14481033Courtesy of MAZDA MOTORS CORP.
  9. Install in the reverse order of removal.
  10. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
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