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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 208 (Parking Assistance Systems) >> Diagnostic Information and Procedures >> DTC C15A3 >> Circuit/System Verification

Circuit/System Verification

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 no other DTCs are set, except for DTC C15A3.
    • Go to next step: If no other DTCs are set 
  3. Replace the K182 Parking Assist Control Module.
  4. Clear DTCs.
  5. Operate the vehicle within the Conditions for Running the DTC.
  6. Verify DTC C15A3 does not set.
    • If DTC C15A3 sets 

      Replace the K160 Brake System Control Module.

    • Go to next step: If DTC C15A3 does not set 
  7. All OK.
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