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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 46 (Disc Brakes) >> Diagnostic Information and Procedures >> DTC C004A >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition » On / Vehicle » In Service Mode
  2. Verify there are no other DTCs set, except for DTC C004A.
    • If no other DTCs are set 
  3. Verify DTC C004A is not set.
    • If the DTC sets 

      • Replace the component: K160 Brake System Control Module.

    • If the DTC is not set 
  4. All OK.
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