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Home >> Saturn >> 2008 >> Astra XR, 2D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - DTC P000A To DTC P0365 >> DTC P0116 >> Circuit/System Verification

Circuit/System Verification

  1. Turn OFF the ignition.
  2. Inspect the cooling system surge tank for the proper engine coolant level. Refer to Cooling System Leak Testing and Cooling System Draining and Filling .
  3. If the ignition has been OFF for 8 hours or greater, the IAT, the ambient temperature, and the ECT should be within 9°C (16°F) of each other. Ignition ON, observe the scan tool IAT Sensor, Ambient Temperature, and the ECT Sensor parameters. Compare those sensor parameters to each other and also to the ambient temperature to determine if the ECT sensor is skewed warmer or colder.
  4. Engine running, observe the ECT Sensor parameter. The reading should be between -39 to +120°C (-38 to +248°F) depending on the current ambient temperature and the vehicle operating conditions.
  5. Engine operating at idle, observe the scan tool MAF Sensor parameter. The reading should be between 2-8 g/s.
  6. Drive the vehicle under various operating conditions. Observe the scan tool IAT Sensor parameter and the Ambient Temperature parameter. The readings should be near each other.
  7. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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