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Home >> Mazda >> 2021 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Coolant Temperature (ECT) Sensor Removal/Installation >> ECT Sensor No. 1

ECT Sensor No. 1

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  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  3. Disconnect the ECT sensor No. 1 connector.
  4. Remove the ECT sensor No. 1 using the SST.
    Fig 1: Engine Coolant Temperature Sensor No. 1 With Torque Specification
    G13488465Courtesy of MAZDA MOTORS CORP.
  5. Install in the reverse order of removal.
  6. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
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