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Home >> Buick >> 2017 >> Envision Base >> Repair and Diagnosis >> Electrical >> Body Electrical >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC B099A: Stop/Start Select Switch Indicator Circuit >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify no other Body Control Module DTCs are set.
    • If no other Body Control Module DTCs are set 
  3. Verify the ECO switch Indicator turns ON and OFF when commanding the Start/Stop Select Switch Indicator Active and Inactive with a scan tool.
    • If the ECO Switch Indicator does not turn on and off. 

      Refer to Circuit/System Testing.

    • If the ECO Switch Indicator turns on and off 
  4. All OK.