LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2017 >> Verano Base, Gas >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Object Detection System And Pedestrian Protection System >> Diagnostic Information and Procedures >> Lane Departure Warning System Malfunction >> Circuit/System Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Verification

NOTE:

Refer to Diagnostic Aids before performing Circuit/System Verification.

  1. Ignition ON.
  2. Verify the K43 Power Steering Control Module (if equipped) and the K17 Electronic Brake Control Module do not have any DTCs set.
    • If the DTC is not set 
  3. Verify that DTC B356A is not set.
    • If the DTC is not set 
  4. Verify that DTC B0987 is not set.
    • If the DTC is not set 
  5. Verify that DTC B1011 is not set.
    • If the DTC is not set 
  6. Verify the scan tool Frontview Camera Disable History 1 parameter does not have a current Malfunction
    • If the parameter is Malfunction 

      Refer to Diagnostic Aids.

    • If the parameter is Normal 
  7. Verify the scan tool Frontview Camera System Status parameter is Normal.
    • If the parameter is Undefined or Malfunction 

      Refer to Diagnostic Aids.

    • If the parameter is Normal 
  8. Verify the scan tool Lane Departure Warning Switch Status parameter changes between Open and Closed while pressing and releasing the lane departure warning switch.
    • If the parameter does not change between Open and Closed 

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

    • If the parameter changes between Open and Closed 
  9. Verify the scan tool Lane Departure Warning Switch indicator turns on and off while pressing and releasing the lane departure warning switch.
    • If the indicator does not turn on and off 

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

    • If the indicator turns on and off 
  10. Verify the area of the K109 Frontview Camera Module for contamination.
    • If it needs to be cleaned 

      Clean the windshield.

    • If it does not need to be cleaned 
  11. All OK.