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Home >> Chevrolet >> 2009 >> Traverse LS, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System & Fuel System - 3.6L - DTC P0008 To DTC P0191 >> DTC P0128 >> Component Testing

Component Testing

  1. Ignition OFF, disconnect the harness connector at the ECT sensor.
    2. NOTE: 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 - Engine Coolant Temperature Sensor table and verify that the resistance is within 5 % of the specification.
    • If not within the specified range, replace the ECT sensor.
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