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Home >> Mazda >> 2011 >> 2 Touring, 1.5 Z, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System MZR 1.5 >> Engine Coolant Temperature (ECT) Sensor Inspection >> ECT Sensor No. 2 Inspection
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ECT Sensor No. 2 Inspection

  1. Disconnect the negative battery cable.
  2. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS .)
  3. Disconnect the ECT sensor No. 2 connector.
  4. Remove the ECT sensor No. 2. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION .)
  5. Place the ECT sensor No. 2 in water with a thermometer, and heat the water gradually.
  6. Measure the resistance between the ECT sensor No. 2 terminals using an ohmmeter.

    ECT sensor No. 2 specification 

    ECT SENSOR NO. 2 SPECIFICATION

    ECT (°C {°F}) Resistance (kilohms)
    20{68} Approx. 2.45
    80{176} Approx. 0.318
    Fig 1: Locating ECT Sensor No. 2
    G06940765Courtesy of MAZDA MOTORS CORP.