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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls And Fuel - 2.0L (LTG) - DTC P0010 To DTC P0333 >> Diagnostic Information and Procedures >> DTC P0107 or P0108: Manifold Absolute Pressure (MAP) Sensor >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, verify that DTC P0641, P0651, P0697, or P06A3 is not set.
    • If none of the DTCs are set 
  2. Determine the current vehicle testing altitude.
  3. Verify the scan tool MAP Sensor parameter is within the range specified in the Altitude Versus Barometric Pressure (With LFX) table.
    • If the MAP Sensor parameter is not in range 

      Refer to Circuit/System Testing for further diagnosis.

    • If the MAP Sensor parameter is within range 
  4. Verify the engine is equipped with a turbocharger.
    • If not equipped with a turbocharger 

      Refer to Step 6.

    • If equipped with a turbocharger 
  5. Engine idling, verify the scan tool MAP Sensor voltage parameter is between 0.3-4.8V and changes with accelerator pedal input.
    • If not between 0.3-4.8V or does not change 

      Refer to Circuit/System Testing.

    • If between 0.3-4.8V and changes 

      Refer to Step 7.

  6. Engine idling, verify the scan tool MAP Sensor voltage parameter is between 0.2-4.5V and changes with accelerator pedal input.
    • If not between 0.2-4.5V or does not change 

      Refer to Circuit/System Testing.

    • If between 0.2-4.5V and changes 
  7. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed in the Freeze Frame/Failure Records data.
  8. Verify the DTC does not set.
    • If any DTC sets 

      Refer to Circuit/System Testing.

    • If no DTC sets 
  9. All OK.
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