LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (Engine Controls And Fuel - 1.8L (LKN) - DTC P0010 To P0459) >> Diagnostic Information and Procedures >> DTC P043E, P043F or P145F: Evaporative Emission (EVAP) System Reference Orifice >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Vehicle in Service Mode,
  2. Verify the scan tool EVAP Leak Detection Pump Pressure sensor reading is within the range specified in the Altitude Versus Barometric Pressure table.
    • If not the specified range 

      Refer to Circuit/System Testing

    • If within specified range 
  3. Record the EVAP Leak Detection Pump Pressure sensor reading.
  4. Command the EVAP Leak Detection Pump Command ON with the scan tool and monitor the EVAP Leak Detection Pump Pressure.
  5. After 6 min record the EVAP Leak Detection Pump Pressure sensor reading. The reading should be 1.18 - 4 kPa (0.17-0.58 PSI) less than the initial reading from step 2.
    • If not the specified range 

      Refer to Circuit/System Testing

    • If within specified range 
  6. Continue monitoring for an additional 5-10 min and then record the EVAP Leak Detection Pump Pressure sensor reading.
  7. The reading should be 1.18 - 4.5 kPa (0.17-0.58 PSI) less than the initial reading from step 2 and the difference between the step 4 and step 5 readings less than 0.51 kpa (.07 PSI)
    • If not the specified range 

      Refer to Circuit/System Testing

    • If within specified range 
  8. 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.
  9. Verify the DTC does not set.
    • If the DTCs set 

      Refer to Circuit System Testing.

    • If the DTCs do not set 
  10. All OK.
scientia non olet · About LEMON Manuals