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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Automatic Transmission - 6T40 - DTC P0973 To DTC P2764 And Troubleshooting Procedures) >> Diagnostic Information and Procedures >> DTC P2719-P2721: Pressure Control Solenoid Valve 4 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Operate the vehicle in second gear long enough to ensure at least a 3°C (5°F) rise in TCM temperature.
  2. Operate the vehicle in drive range. Allow the transmission to shift through all forward gear ranges.
  3. Ignition ON.
  4. Verify the scan tool parameters listed below do not display Malfunction:
    • Pressure Control Solenoid Valve 4 Performance Test Status
    • Pressure Control Solenoid Valve 4 Control Circuit Low Voltage Test Status
    • Pressure Control Solenoid Valve 4 Control Circuit High Voltage Test Status
    • If Malfunction is displayed  

      Refer to Circuit/System Testing.

    • If Malfunction is not displayed  
  5. 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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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