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Home >> GMC >> 2021 >> Terrain SLT, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 169 (Driver Assistance Systems) >> Diagnostic Information and Procedures >> DTC B356A >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2021 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify the scan tool parameter: Lane Keep Assist Switch Status = Inactive
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  3. Operate the component: Lane Keep Assist Switch - Press and hold the switch

    Verify the scan tool parameter: Lane Keep Assist Switch Status = Active

    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  4. All OK.