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Home >> Chevrolet >> 2017 >> Traverse Premier, FWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 3.6L (LLT) - DTC P0340 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P2635: Fuel Pump Flow Performance >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify that DTC P018B, P018C, P018D, P0231, P0232, or P023F is not set.
    • If none of the DTCs are set 
  3. Verify the scan tool Short Term Fuel Pump Trim and the Long Term Fuel Pump Trim when multiplied together are less than 1.5.
    • If greater than 1.5 

      Refer to Circuit/System Testing.

    • If less than 1.5 
  4. Verify the scan tool Fuel Pressure Sensor and the Desired Fuel Pressure are within 45 kPa (6.5 psi) at 300 kPa (43.5 psi) request or 60 kPa (8.7 psi) at 400 kPa (58 psi) request of each other while operating the vehicle through varying loads.
    • If greater than 45 kPa (6.5 psi)/60 kPa (8.7 psi) 

      Refer to Circuit/System Testing.

    • If less than 45 kPa (6.5 psi)/60 kPa (8.7 psi) 
  5. 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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  7. All OK.
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