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Home › Cadillac › 2019 › CTS Base, AWD › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Power Door Lock System › Diagnostic Information and Procedures › DTC B3938 › Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Operate the component:S13D Door Lock Switch - Driver - Lock Switch

    Verify the component works as specified: M97 Fuel Fill Door Lock Actuator =Locked

    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  3. Operate the component:S13D Door Lock Switch - Driver - Unlock Switch

    Verify the component works as specified: M97 Fuel Fill Door Lock Actuator = Unlocked

    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  4. All OK.
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