Inspection/Maintenance Evaporative Emission System Set: Description

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The purpose of this test is to satisfy the enable criteria necessary to execute the inspection/maintenance (I/M) readiness diagnostics for the Evaporative Emission (EVAP) System. The test may be used in order to set the I/M System Status indicators to YES. The I/M System Status Display on the scan tool provides an indication of when the control module has completed the required tests. The I/M System Status does not indicate that the tests have passed or failed. When all of the diagnostics for a specific system have run and passed the I/M System Status will update to YES. If a test for a specific system has failed, the I/M System Status will update to YES, indicating a determination was made, even if all of the other tests for that system have not run. If a small leak is detected, a minimum of 3 drive cycles may be required before the I/M System Status will update to YES. Performing a visual inspection prior to running the EVAP test may prevent having to repeat the test. A failed or aborted test will require the vehicle to cool down in order to meet the enable criteria to run another test.