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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 517 (Engine Controls And Fuel - 3.6L (LLT) - DTC P0010 To DTC P0336) >> Diagnostic Information and Procedures >> DTC P0102 or P0103: Mass Air Flow (MAF) Sensor >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine running.
  2. Verify the scan tool MAF Sensor Hz parameter is greater than 0 Hz.
    • If 0 Hz 

      Refer to Circuit/System Testing.

    • If greater than 0 Hz 
  3. Verify the scan tool MAF Sensor g/s parameter changes smoothly and gradually as the engine speed is increased and decreased while performing the actions listed below.
    1. Engine idling
    2. Increase the engine speed slowly to 3, 000 RPM and then back to idle.
    3. Exit from the scan tool data list and review the stored data within the Stored Data function of the scan tool.
    4. Observe the MAF Sensor parameter frame by frame.
    • The MAF Sensor parameter does not change smoothly and gradually 

      Refer to Circuit/System Testing.

    • The MAF Sensor parameter changes smoothly and gradually 
  4. 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.
  5. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set. 
  6. All OK
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