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Home >> Chevrolet >> 2014 >> Impala LS >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Object Detection System And Pedestrian Protection System >> Diagnostic Information and Procedures >> DTC B356A: Vehicle Direction Warning Switch >> Circuit/System Verification

Circuit/System Verification

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

      refer to Circuit/System testing (below).

    • If the parameter changes 
  3. All OK.
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