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Home >> Chevrolet >> 2006 >> Optra LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.0L (L34 GMDAT) - DTC P0016 To DTC P0402 >> DTC P0116 >> Component Testing
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Component Testing

  1. Ignition OFF, disconnect the harness connector of the engine coolant temperature (ECT) sensor.
    2. IMPORTANT: A thermometer can be used to the used to test the sensor off the vehicle.
  2. Test the ECT sensor by varying the sensor temperature while monitoring the sensor resistance. Compare the readings with the table and verify that the resistance is within 5 percent of the specification.
    • If the resistance Vs. temperature is not within 5 percent, replace the ECT sensor.
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