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Home › Cadillac › 2018 › CT6 Plug-In › Repair and Diagnosis › Body & Frame › Door Locks › Power Door Lock System And Release Systems › Diagnostic Information and Procedures › DTC B384B › Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle in Service Mode
    NOTE:

    Verify all doors have been commanded UNLOCK with a scan tool prior to commanding the trunk lid to unlatch

  2. Verify the trunk lid will power OPEN and CLOSE when commanding the Liftgate Open/Close with a scan tool.
    • If the trunk lid does not power OPEN or CLOSE 

      Refer to Circuit/System Testing

    • Go to next step: If the trunk lid does power OPEN and CLOSE 
  3. All OK.
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