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Home >> Cadillac >> 2019 >> 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 P2728-P2730 >> Circuit/System Verification

Circuit/System Verification

  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. Verify the scan tool parameters listed below do not display Malfunction:
    • Pressure Control Solenoid Valve 5 Performance Test Status
    • Pressure Control Solenoid Valve 5 Control Circuit Low Voltage Test Status
    • Pressure Control Solenoid Valve 5 Control Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing.

    • Go to next step: 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.

    • Go to next step: If the DTC does not set 
  6. All OK.
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