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Home >> Saturn >> 2007 >> Sky Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls & Fuel - 2.4L - DTC P0420 To P2544 >> DTC P0455 >> Circuit/System Testing
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Circuit/System Testing

IMPORTANT:
  • Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.
  • Refer to the J 41413-200  (J 41413-100) operation manual for detailed instructions.
  1. Using the GE-41415-50  , connect the J 41413-200  (J 41413-100) to the vehicle filler neck.
  2. Seal the system and use the flow meter on the J 41413-200  (J 41413-100), calibrated to 0.51 mm (0.020 in) to determine that there is no leak in the EVAP system.
    • If a leak is detected use the J 41413-200  (J 41413-100) to apply smoke to the EVAP system at the service port or the filler neck until the leak is located.
  3. Start the engine with the J 41413-200  (J 41413-100) connected to the fuel filler neck.
  4. Allow the engine to idle.
  5. Use the Purge/Seal function to seal the system with a scan tool.
  6. Command the EVAP canister purge solenoid valve to 20 percent.
  7. The vacuum/pressure gage on the J 41413-200  (J 41413-100) and the FTP parameter on the scan tool should both show vacuum.
    • If the vacuum/pressure gage shows vacuum but the FTP parameter does not show vacuum, replace the FTP sensor.
    • If neither the FTP parameter nor the vacuum/pressure gage shows vacuum, repair the restriction in the purge path.
  8. Verify that the vacuum increases to the abort limit on the scan tool or more than 3.2 volts, and the value is closely similar between the scan tool and the vacuum/pressure gage on the J 41413-200  (J 41413-100).
    • If the values are not similar or the voltage did not reach 3.2 volts, replace the FTP sensor.
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