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Circuit/System Testing

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Refer to the GE-41413-A  operation manual for detailed instructions in Evaporative Emission Control System Diagnosis 
  • Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize or produce smoke from a leak.
  • Ensure that the underbody temperature of the vehicle and the tester are similar.
  1. Disconnect the purge tube at the quick connector on the EVAP canister side of the Q12 Evaporative Emission Canister Purge Solenoid Valve and install the CH-48096  .
  2. Connect the GE-41413-A  to the CH-48096  .
  3. Command the EVAP Purge/Seal function to Not Venting with a scan tool to seal the EVAP system.
  4. Use the flow meter on the GE-41413-A  , calibrated to 0.51 mm (0.020 in) to determine if there is a leak.
    • If a leak is detected 
    1. Use the GE-41413-A  to apply smoke to the EVAP system at the purge tube until the leak is located using the GE-41413-SPT 
      • If leak is detected, repair or replace the affected component as necessary.
    • Go to next step: If no leak is detected 
  5. All OK.
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