Inspection/Maintenance (I/M) Evaporative Emission (EVAP) System Set Procedure: Description

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The purpose of this test is to satisfy the enable criteria necessary to execute inspection/maintenance (I/M) readiness diagnostics for the evaporative emission (EVAP) system. The test may be used to set the I/M System Status indicators to YES. The I/M System Status display on the scan tool indicates whether or not the control module has completed the required test. The required test is complete when either all of the DTCs comprising the test have run and passed, or when any one of the DTCs comprising the test has illuminated the malfunction indicator lamp (MIL). Once the test is complete, the I/M System Status display will indicate YES in the completed column. Performing a visual inspection prior to running the EVAP test may prevent having to repeat the test due to the fact that a failed or aborted test will require the vehicle to cool down in order to meet the enable criteria to run another test.