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Home >> Buick >> 2021 >> Envision Preferred, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Driver Assistance Systems >> Diagnostic Information and Procedures >> DTC B13AD >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Lane Departure Warning Switch Status parameter is Off.
    • If the parameter is not Off 

      Refer to Circuit/System Testing.

    • Go to next step: If the parameter is Off 
  3. Verify the scan tool Lane Departure Warning Switch Status parameter is On while pressing the lane keep assist switch.
    • If the parameter is not On 

      Refer to Circuit/System Testing.

    • Go to next step: If the parameter is On 
  4. All OK. A fault is currently not present and may be an intermittent condition.
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