LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 401 (Engine Controls And Fuel - 3.0L (LGY) - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P0245, P0246, P0249, P0250, P1038, P103A, P10BD, or P10BE >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On/Vehicle - In Service Mode
  2. Verify DTC DTC P2AB8, P2AB9, P2ABB, P2ABC, P2B81, P2B82, P2B93, P2B94, U0644, U0674 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Engine - Idling - At normal operating temperature
  4. Perform the appropriate scan tool control function: Turbocharger Wastegate Position - Increase & Decrease

    Verify the scan tool parameter:

    • Turbocharger Wastegate Control Circuit High Test Status = Not Run or Okay
    • Turbocharger Wastegate Control Circuit Low Test Status = Not Run or Okay
    • Turbocharger Wastegate Control Circuit Open Test Status = Not Run or Okay
    • Turbocharger 2 Wastegate Control Circuit High Test Status = Not Run or Okay
    • Turbocharger 2 Wastegate Control Circuit Low Test Status = Not Run or Okay
    • Turbocharger 2 Wastegate Control Circuit Open Test Status = Not Run or Okay
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  5. Perform the appropriate scan tool control function: Turbocharger Wastegate Position - Increase & Decrease

    Perform the action while monitoring the parameter:

    • Turbocharger Wastegate Control Circuit High Test Status = Not Run or Okay
    • Turbocharger Wastegate Control Circuit Low Test Status = Not Run or Okay
    • Turbocharger Wastegate Control Circuit Open Test Status = Not Run or Okay
    • Turbocharger 2 Wastegate Control Circuit High Test Status = Not Run or Okay
    • Turbocharger 2 Wastegate Control Circuit Low Test Status = Not Run or Okay
    • Turbocharger 2 Wastegate Control Circuit Open Test Status = Not Run or Okay
      • Wiggle the harness and connector: K20 Engine Control Module
      • Wiggle the harness and connector: M128 Turbocharger Wastegate Actuator
    • If not the specified state 

      Repair as necessary - Wiring/Terminal(s)/Electrical Connector(s)

    • Go to next step: If the specified state 
  6. 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.

    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 
  7. All OK.
scientia non olet · About LEMON Manuals