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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (1 Of 3)) >> Diagnostic Information and Procedures >> DTC P0045, P0047, P0048, P169E, or P169F >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P0689, P0690, P1402 is not set.
    • Go to next step : If none of the DTCs are set 
  3. Engine - Idling
  4. Verify DTC P0045, P0047, P0048, P169E, P169F is not set.
    • If the DTC sets 

      Refer to : Circuit/System Testing

    • Go to next step : If the DTC does not set 
  5. Perform the scan tool control function : Turbocharger Vane Position - From 10 to 90% and back to 0%.

    Verify the scan tool parameter : Turbocharger Vane Position Sensor = Increase & Decrease

    • If not the specified state 

      Refer to : Circuit/System Testing

    • Go to next step : If the specified state 
  6. Perform the action while monitoring the parameter : DTC P0045, P0047, P0048, P169E, P169F = Not set
    • Wiggle the harness and connector : M103 Turbocharger Vane Position Actuator
    • Wiggle the harness and connector : K20 Engine Control Module
    • If the DTC sets 

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

    • Go to next step : If the DTC does not set 
  7. 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 
  8. All OK.
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