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Home >> Buick >> 2014 >> Regal GS, FWD, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Object Detection System And Parking Assist System >> Diagnostic Information and Procedures >> Lane Departure Warning System Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify that DTC B356A is not set.
    • If the DTC is not set 
  3. Verify that DTC B0987 is not set.
    • If the DTC is not set 
  4. Verify the scan tool Frontview Camera System Status parameter is Normal.
    • If the parameter is Undefined or Malfuction 

      Refer to Circuit/System Testing.

    • If the parameter is Normal 
  5. Verify the scan tool Lane Departure Warning Switch Status parameter changes between On and Off when pressing the lane departure warning switch.
    • If the parameter does not change between On and Off 

      Refer to Lane Departure Warning Switch Circuit Malfunction in Circuit/System Testing.

    • If the parameter changes between On and Off 
  6. All OK.
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