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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 345 (Power Door Lock System - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC B19A5 >> 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. Verify DTC B19A5 49, B19A5 54, B19A5 55 is not set.
    • If the DTC is set 

      Replace the component: K171 Rear Closure Hands Free Module

    • Go to next step: If the DTC is not set 
  3. Verify DTC B19A5 A2 is not set.
    • Go to next step: If the DTC is not set 
  4. Verify DTC B19A5 A3 is not set.
    • Go to next step: If the DTC is not set 
  5. All OK.
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