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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1995 (Engine Controls And Fuel - 3.6L (Ly7) - DTC P025A/P0300 To DTC P0700) >> DTC P0442 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.
  • 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.
  • Refer to the J 41413-200  (J 41413-100) operation manual for detailed instructions
  1. Connect the J 41413-200  (J 41413-100) to the vehicle at the EVAP service port. For vehicles without a service port, disconnect the purge tube at the quick connector on the EVAP canister side of the purge solenoid valve and install the CH-48096  .
  2. Using a scan tool, close the EVAP canister vent valve to seal the EVAP system.
  3. 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 purge tube until the leak is located using the J 41413-SPT  .
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