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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 in Evaporative Emission System Diagnosis .
  1. With the GE-41415-50  , connect the J 41413-200  (J 41413-100) to the fuel filler neck.
  2. Disconnect the EVAP vent pipe from the EVAP canister vent solenoid valve.
  3. Seal the EVAP vent pipe using a plug from the J 41413-300  .
  4. 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 purge tube or the filler neck until the leak is located.
  5. Turn ON the ignition.
  6. Use the hand vacuum pump at the purge tube to create a vacuum on the EVAP system.
  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 -2 kPa (-8 in H2O) and the value is 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 -2 kPa (-8 in H2O), replace the FTP sensor.
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