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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 B390C is not set
    • If the DTC is set 
    1. Perform the Radar Sensor Module - Long Range Learn  procedure.
    2. Verify DTC B390C is not set after the calibration procedure has been completed.
      • If the DTC is set after calibration, replace the B233B Radar Sensor Module - Long Range.
      • Go to next step: If the DTC is not set after calibration
    3. All OK.
    • Go to next step: If DTC B390C 66 is not set 
  3. All OK.
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