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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 P0960, P0962-P0964, P0966-P0968, P0970, P0971, P2670, P2671, P2718, P2720, P2721, P2812, P2814, P2815, P281B, P281D, or P281E >> 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 - Engine Running
  2. Verify the scan tool parameter:
    • High Side Driver 2 Circuit Open Test Status = Not Run or OK
    • High Side Driver 2 Circuit Low Voltage Test Status = Not Run or OK
    • High Side Driver 2 Circuit High Voltage Test Status = Not Run or OK
    • Transmission Control Solenoid Valve 1-4, 7, 8 Control Circuit Open Test Status = Not Run or OK
    • Transmission Control Solenoid Valve 1-4, 7, 8 Control Circuit Low Voltage Test Status = Not Run or OK
    • Transmission Control Solenoid Valve 1-4, 7, 8 Control Circuit High Voltage Test Status = Not Run or OK
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  3. 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 
  4. All OK.
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