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Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON/Vehicle In Service Mode.
  2. Verify that DTC U0028 or U0029 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Verify DTC B101E is not set.
    • If DTC B101E is set 
    1. Program the device that sets the DTC.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the device that sets the DTC.
      • Go to next step: If the DTC does not set
    3. All OK.
    • Go to next step: If DTC B101E is not set 
  4. All OK
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