Inspection/Maintenance Evaporative Emission System Set Procedure: Description
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Pontiac Grand Prix, 2003 Pontiac Bonneville, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, and 2003 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Purpose of this test is to satisfy enable criteria necessary to execute I/M readiness diagnostics for Evaporative (EVAP) emission system. Test may be used to set I/M SYSTEM STATUS indicators to YES. Service Bay Tests are included on scan tool for some systems depending upon vehicle make and model. Test is designed to allow EVAP diagnostic tests to run in service bay conditions. Ensure vehicle meets requirements listed in enable criteria before performing either EVAP system test. Failure to meet necessary requirements may produce inaccurate test results.