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Home >> Cadillac >> 2017 >> ATS Base, 4D Sedan, AWD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC B099A: Stop/Start Select Switch Indicator Circuit >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. 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 
  3. All OK.
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