DTC Confirmation Test Using Generic Scan Tool

Drive vehicle according to specified driving pattern to set System Readiness Test (SRT) codes. See SYSTEM READINESS TEST (SRT) CODES under ADDITIONAL SYSTEM FEATURES in TESTS W/CODES - INTRODUCTION article. Stop vehicle and go to next step.
Select MODE 1 on scan tool and check SRT status of EVAP system. If EVAP system SRT is complete, system is okay at this time. Retest system and diagnose by symptom is fault exists with no code. See TESTS W/O CODES article. If EVAP system SRT is incomplete, turn ignition off, wait 5 seconds and go to next step.
Perform driving pattern again. Select MODE 3 on scan tool. If DTC P0440, P1440 or P1447 is set, perform appropriate diagnostic procedure. If DTC P0440, P1440 or P1447 are not set, go to step 2).