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Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that DTC B356A is not set.
    • Go to next step: If the DTC is not set 
  3. Verify the lane departure warning 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 Circuit/System Testing.

    • Go to next step: If the indictor turns ON and OFF 
  4. All OK.
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