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Circuit/System Verification

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that DTC B3122, B3123, or B3124 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Refer to Circuit/System Testing .
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