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Home >> Chevrolet >> 2008 >> Optra5 LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.4L DOHC >> Diagnostic Information and Procedures >> DTC P0117 or P0118 >> Component Testing
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Component Testing

  1. Ignition OFF, disconnect the harness connector at 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 Temperature Versus Resistance  table and verify that the resistance is within 5 percent of the specification.
    • If not within the specified range, replace the ECT sensor.
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