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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 329 (Object Detection System And Pedestrian Protection System) >> Diagnostic Information and Procedures >> DTC B356A: Vehicle Direction Warning Switch Circuit >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the scan tool Lane Departure Warning Switch Status parameter changes between Open and Closed while cycling the lane departure warning switch.
    • If the parameter does not change 

      Refer to Circuit/System Testing.

    • If the parameter changes 
  3. All OK.