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Home >> GMC >> 2013 >> Sierra 1500 XFE >> Repair and Diagnosis >> External Pages >> Different car >> Section 2721 (Object Detection System And Pedestrian Protection System) >> Diagnostic Information and Procedures >> Lane Departure Warning System Malfunction >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON.
  2. 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 
  3. Verify the scan tool Lane Departure Warning Switch Status parameter changes between Open and Closed when pressing and releasing the lane departure warning switch.
    • If the parameter does not change between Open and Closed 

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

    • If the parameter changes between Open and Closed 
  4. Verify the lane departure warning indicator turns ON and OFF when turning the lane departure warning system on and off with the lane departure warning switch.
    • If the indicator does not turn ON and OFF 

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

    • If the indictor turns ON and OFF 
  5. All OK.
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