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Home >> Chevrolet >> 2009 >> Traverse LS, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 3.6L - DTC P0192 To DTC P0629 >> DTC P0442 >> Circuit/System Testing
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Circuit/System Testing

    NOTE:
    • You must start with the Circuit/System Verification before proceeding with Circuit/System Testing.
    • Ensure that the vehicle underbody temperature is similar to the ambient temperature and allow the surrounding air to stabilize before starting the diagnostic procedure. The system flow will be less with higher temperatures.
  1. Connect the GE-41415-50  to the fuel tank filler neck. Connect the J 41413-200  to the GE-41415-50  . See Special Tools .
  2. Connect the CH-48096  between the EVAP purge solenoid and the EVAP purge pipe. See Special Tools .
  3. Turn the nitrogen/smoke valve on the control panel to SMOKE.
  4. Command the EVAP vent solenoid closed with a scan tool.
  5. Use the remote switch to introduce smoke into the EVAP system.
  6. Use the J 41413-VLV  to open the EVAP service port. Once smoke is observed, remove the J 41413-VLV  .
    7. NOTE: Introduce smoke at 15 second intervals while testing the system.
  7. Verify that smoke is not exiting the entire EVAP system with the J 41413-SPT  . See Special Tools .
      NOTE: The fuel tank may need to be lowered to improve visibility of some of the EVAP system components.
    • If smoke is observed, repair the condition as necessary.
  8. Remove the J 41413-200  nitrogen supply hose from the GE-41415-50  , and remove the GE-41415-50  from the fuller neck. See Special Tools .
  9. Install the fuel fill cap.
  10. Connect the J 41413-200  nitrogen/smoke supply hose to the EVAP service port of the CH-48096  . See Special Tools .
  11. Command the EVAP vent solenoid closed with a scan tool.
  12. Use the remote switch to introduce smoke into the EVAP system.
    13. NOTE: The fuel tank may need to be lowered to improve visibility of some of the EVAP system components.
  13. Verify that smoke is not exiting the entire EVAP system with the J 41413-SPT  . See Special Tools .
    • If smoke is observed, repair the condition as necessary.
  14. Verify the individual EVAP system components for a leak using the J 41413-300  . See Special Tools . The EVAP system components should not leak.
    • If a condition is found replace the affected component.
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