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Home >> Buick >> 2021 >> Envision Preferred, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L (LSY) - Diagnostic Information And Procedures (2 Of 2) >> Diagnostic Information and Procedures >> Inspection/Maintenance Complete System Set Procedure >> Circuit/System Verification

Circuit/System Verification

  1. Verify that all I/M System Status indicators report YES, and that no I/M Test DTCs are present.
    • Go to next step: If no I/M Test DTCs are set 
  2. All OK.
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