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Home >> Chevrolet >> 2002 >> Impala LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System Self-Diagnostics - 3.4L) >> Inspection/Maintenance Procedures >> Inspection/Maintenance EVAP System Set Procedure >> Description
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Inspection/Maintenance EVAP System Set Procedure: Description

WARNING: This page is about a different variant/trim than selected.

The purpose of this test is to satisfy the enable criteria necessary to execute I/M readiness diagnostics for the EVAP system. The test may be used to set the I/M System Status indicators to YES. Service Bay Tests are included on the scan tool for some systems depending upon vehicle make and model. The test is designed to allow the EVAP Diagnostic Tests to run in service bay conditions. Ensure the vehicle meets the requirements listed in Conditions for Running before performing either EVAP system test. Failure to meet the necessary requirements may produce inaccurate test results.