LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 114 (Engine Controls And Fuel - 4.3L (LV1) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0089, P00C6, P228C, P228D, or P2C1E-P2C20 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. 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 P0016, P0017, P0018, P0019, P0090, P0091, P0092, P00C8, P00C9, P00CA, P0111, P0112, P0113, P0116, P0117, P0118, P0128, P0192, P0193, P0335, P0336, P0340, P0341, P0345, P0346, P0365, P0366, P0390, P0391, P0628 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Engine - Cranking - For 10 s

    Verify the function: Engine = Running

    • If the function does not work 

      Refer to: Circuit/System Testing

    • Go to next step: If the function works 
  4. Engine - Idling
  5. Verify the scan tool parameter: Fuel Rail Pressure Sensor 1 = 1. 9 to 5. 0 MPa (276 to 725 PSI)
    • If not between 1. 9 and 5. 0 MPa (276 and 725 PSI) 

      Refer to: Circuit/System Testing

    • Go to next step: If between 1. 9 and 5. 0 MPa (276 and 725 PSI) 
  6. Perform the scan tool control function: Fuel Rail Pressure - Increase & Decrease

    Verify the scan tool parameter: Fuel Rail Pressure = The value should change with each command.

    • If the value does not change 

      Refer to: Circuit/System Testing

    • Go to next step: If the value changes 
  7. Clear the DTCs.
    8. WARNING:

    Road test a vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.

  8. From a stop, accelerate to 7, 000 RPM with the throttle position greater than 95%.

    Verify the scan tool parameter: Fuel Rail Pressure Sensor 1 = 14 to 17 MPa (2, 031 to 2, 466 PSI)

    • If not between 14 and 17 MPa (2, 031 and 2, 466 PSI) 

      Refer to: Circuit/System Testing

    • Go to next step: If between 14 and 17 MPa (2, 031 and 2, 466 PSI) 
  9. 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 is not set 
  10. All OK.
scientia non olet · About LEMON Manuals