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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 340 (Power Door Lock System - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC B19C7 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On/Vehicle - In Service Mode
  2. Operate the component: S13D Door Lock Switch - Driver - Unlock Switch

    Operate the component:

    • B27LF Front Side Door Outside Handle Switch-Left - Pressed
    • B27RF Front Side Door Outside Handle Switch-Right - Pressed
    • B27LF Front Side Door Outside Handle Switch-Left - Pressed
    • B27LF Front Side Door Outside Handle Switch-Left - Pressed
  3. Verify each A23 Door Latch will activate allowing the appropriate door to release.
    • If the A23 Door Latch- does not activate 

      Refer to: Circuit/System Testing

    • Go to next step: If the A23 Door Latch does activate 
  4. A fault that is not currently present may have been caused by a intermittent condition.
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