Diagnostic Aids
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix, 2002 Chevrolet Malibu, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
The EVAP system tests run when the engine is first started and meets the Conditions for Running the DTC. See CONDITIONS FOR RUNNING DTC . To aid in locating intermittent leaks, use the J-41413 EVAP Pressure and Purge Station to pressurize the EVAP system. Move all EVAP components while testing with the J-41416 Ultrasonic Leak Detector.