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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Wiring Systems And Power Management - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Ignition Mode Switch Indicator Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the green LED turns ON and OFF when commanding the Run/Start Power Mode Indicator On and Off with the scan tool.
    • If the green LED does not turn ON and OFF 

      Refer to Circuit/System Testing - Green LED Test.

    • Go to next step: If the green LED turns ON and OFF 
  3. Verify the amber LED turns ON and OFF when commanding the Accessory Power Mode Indicator On and Off with the scan tool.
    • If the amber LED does not turn ON and OFF 

      Refer to Circuit/System Testing - Amber LED Test.

    • Go to next step: If the amber LED turns ON and OFF 
  4. All OK.
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