LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 160 (Park Brake) >> Diagnostic Information and Procedures >> DTC C2A21 >> 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 DTC C2A21 is not set.
    • If the DTC is set 
    1. Perform the following learn procedure: Park Brake Calibration .
    2. Apply the electronic parking brake.
    3. Release the parking brake.
    4. Verify DTC C2A21 is not set.
      • If the DTC is set

        Perform all necessary programming and setup procedures for the control module: K160 Brake System Control Module

      • Go to next step: If the DTC is not set

        Go to next step: All OK.

    • Go to next step: If the DTC is not set 
  3. All OK.
scientia non olet · About LEMON Manuals