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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Driver Assistance Systems >> Diagnostic Information and Procedures >> DTC B1A01 >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Clear DTCs
  3. Operate the vehicle within the Conditions for Running the DTC.
  4. Verify DTC B1A01 is not set.
    • If the DTC is set 
    1. Program the control module: B174W Frontview Camera - Windshield
    2. Operate the vehicle within the Conditions for Running the DTC.
    3. Verify DTC B1A01 is not set.
      • If the DTC is set

        Replace the component: B174W Frontview Camera - Windshield

      • Go to next step: If the DTC is not set
    4. All OK.
    • Go to next step: If the DTC is not set 
  5. All OK.
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