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Home >> Scion >> 2004 >> xA Automatic >> Repair and Diagnosis >> Engine Mechanical >> Electric Cooling Fans >> Component Tests >> Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor

  1. Drain engine coolant. Remove No. 2 cylinder head cover. Remove ECT sensor. See ECT SENSOR LOCATIONS . Place ECT sensor and thermometer into a water bath.
    ECT SENSOR LOCATIONS

    Application Sensor Location
    xA On Rear Of Cylinder Head
  2. Measure resistance between terminal Nos. 1 and 2. See Fig 1. If resistance is not as specified, replace ECT sensor.
  3. Install NEW gasket on sensor. Install ECT sensor. Install No. 2 cylinder head cover. Fill engine with coolant.
Fig 1: Measuring ECT Sensor Resistance
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