ECT Sensor No.1 Inspection

2013 Mazda 2 Touring, 1.5L Eng VIN Z, Automatic TransSECTION ECT Sensor No.1 Inspection
  1. Disconnect the negative battery cable.
  2. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS ).
  3. Remove the battery. (See BATTERY REMOVAL/INSTALLATION [MZR 1.5] ).
  4. Disconnect the ECT sensor No.1 connector.
  5. Remove the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION ).
  6. Place the ECT sensor No.1 in water with a thermometer, and heat the water gradually.
  7. Measure the resistance between the ECT sensor No.1 terminals using an ohmmeter.
    ECT SENSOR NO.1 SPECIFICATION

    ECT (°C {°F}) Resistance (kilohms)
    20 {68} Approx. 2.45
    80 {176} Approx. 0.318
    Fig 1: Identifying ECT Sensor No.1 Connector
    G09130330
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.