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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0965, P0966, P0967: Pressure Control Solenoid Valve 2 >> Circuit/System Testing

Circuit/System Testing

    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 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-47825-20  adapter harness between the vehicle harness connector and the Q8 Control Solenoid Valve Assembly connector. Ignition ON.
  6. Verify the scan tool parameters listed below do not display Malfunction:
    • Pressure Control Solenoid Valve 2 Performance Test Status
    • Pressure Control Solenoid Valve 2 Control Circuit Low Voltage Test Status
    • Pressure Control Solenoid Valve 2 Control Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Replace the Q8 Control Solenoid Valve Assembly.

    • If Malfunction is not displayed 
  7. All OK.
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