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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Driver Assistance Systems) >> Diagnostic Information and Procedures >> Forward Collision Alert System Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify 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 indicator turns ON and OFF 
  4. All OK.
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