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Home >> Buick >> 2019 >> Regal TourX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 140 (Automatic Transmission - 9T50 (M3D) And 9T60 (M3T) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0716, P0717, P07BF, or P07C0 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On/Vehicle - In Service Mode
  2. Verify the scan tool parameter: 9 V Reference 1 Circuit Status = OK
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  3. Engine - Running
  4. Transmission - Park
  5. Verify the scan tool parameter: Transmission ISS & Engine Speed. - The difference between the following parameters is less than 50 RPM:
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  6. Transmission - Reverse
  7. Verify the scan tool parameter: Transmission ISS w0 RPM
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  8. 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. Verify the DTC does not set.
    • If the DTC sets 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC is not set 
  9. All OK.
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