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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 353 (Engine Controls And Fuel - 2.5L (LCV) - DTC P0010 To DTC P0366) >> Diagnostic Information and Procedures >> DTC P0106: Manifold Absolute Pressure (MAP) Sensor Performance >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, verify that DTC P0641, P0651, P0697, or P06A3 is not set.
    • If none of the DTC's are set 
  2. If you were sent here from DTC P0068, P0101, P0121, or P1101; refer to Circuit/System Testing.
  3. Ignition ON, verify the scan tool Throttle Body Idle Airflow Compensation parameter is less than 90%.
    • If less than 90% 
  4. Verify the scan tool Throttle Position Sensors 1 and 2 Agree/Disagree parameter displays Agree while performing the Throttle Sweep Test with a scan tool.
    • If Agree 
  5. Determine the current vehicle testing altitude.
  6. Verify the scan tool MAP Sensor pressure parameter is within the range specified in the Altitude Versus Barometric Pressure table.
    • If the MAP Sensor parameter is not in range 

      Refer to Circuit/System Testing.

    • If the MAP Sensor parameter is within range 
  7. Engine idling, verify the scan tool MAP Sensor pressure parameter is between 26-52 kPa (3.8-7.5 PSI) and changes with accelerator pedal input.
    • If not between 26-52 kPa (3.8-7.5 PSI) or does not change 

      Refer to Circuit/System Testing.

    • If between 26-52 kPa (3.8-7.5 PSI) and changes 
  8. Observe and compare the scan tool MAF Sensor and Engine Speed parameters.
  9. Increase the engine speed slowly to 3,000 RPM and then back to idle.
  10. Verify the scan tool MAF Sensor g/s parameter changes smoothly and gradually as the engine speed is increased and decreased.
    • If the MAF Sensor parameter does not change smoothly and gradually 

      Refer to DTC P0101  for further diagnosis.

    • If the MAF Sensor parameter changes smoothly and gradually 
  11. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  12. Verify a DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  13. All OK
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