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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Automatic Transmission - 6L80 (MYC) Or 6L90 (MYD) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P2719, P2720, Or P2721: Pressure Control Solenoid 4 >> Circuit/System Verification

Circuit/System Verification

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  1. Operate the vehicle in drive range. Allow the vehicle to shift through all forward gear ranges.
  2. 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 High Voltage Test Status
    • Pressure Control Solenoid Valve 4 Control Circuit Low Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing.

    • Go to next step: If Malfunction is not displayed 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observe from the Freeze Frame/Failure Records data.
  4. 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 
  5. All OK.
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