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Home >> Cadillac >> 2017 >> XTS Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 (M7U M7W), 6T75 (M7V), Or 6T80 (Mhm) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0976 Or P0977: Shift Solenoid Valve 2 Control Circuit >> Circuit/System Verification

Circuit/System Verification

  1. Operate the vehicle in 3rd gear long enough to ensure at least a 3°C (5°F) rise in TCM temperature.
  2. Place the gear selector in Reverse for 5 s and then idle the engine with the gear selector in Park for 5 s.
  3. Verify the scan tool parameters listed below do not display Malfunction:
    • Shift Solenoid Valve 2 Control Circuit Low Voltage Test Status
    • Shift Solenoid Valve 2 Control Circuit Open Test Status
    • Shift Solenoid Valve 2 Control Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing.

    • If Malfunction is not displayed 
  4. 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.
  5. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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