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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 P2762, P2763, or P2764: Torque Converter Clutch (TCC) Pressure Control Solenoid Valve >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
    NOTE:

    You must perform the Circuit/System Verification first.

  1. Ignition OFF, remove the Q8 Control Solenoid Valve Assembly.
  2. Verify the Q8 Control Solenoid Valve Assembly is not contaminated with any debris and clean as necessary. Refer to Control Solenoid Valve and Transmission Control Module Assembly Inspection .
    • If contaminated 

      Repair as necessary.

    • If not contaminated 
  3. Verify the resistance is within the specified range for each solenoid valve listed in the Control Solenoid Valve and Transmission Control Module Assembly Inspection .
    • If the resistance is not within range 

      Replace the Q8 Control Solenoid Valve Assembly.

    • If the resistance is within range 
  4. Place the Q8 Control Solenoid Valve Assembly on a clean work surface near the transmission assembly.
  5. Connect the DT-48616-10  adapter harness between the vehicle harness connector and the Q8 Control Solenoid Valve Assembly connector. Ignition ON.
  6. NOTE:

    If the TCC Pressure Control Solenoid Valve is not commanded from the Transmission Solenoid Performance Test, High Side Driver 1 will not be commanded On and the circuit test status will not run.

  7. Verify the scan tool parameters listed below do not display Malfunction when commanding the TCC Pressure Control Solenoid Valve On and Off:
    • TCC Pressure Control Solenoid Valve Performance Test Status
    • TCC Pressure Control Solenoid Valve Control Circuit Low Voltage Test Status
    • TCC Pressure Control Solenoid Valve Control Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Replace the Q8 Control Solenoid Valve Assembly.

    • If Malfunction is not displayed 
  8. All OK.