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Home >> Buick >> 2021 >> Envision Preferred, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC C2A23 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On/Vehicle - In Service Mode
  2. Verify no other DTCs are set.
    • Go to next step: If no other DTCs are set 
  3. Ignition/Vehicle - Off
  4. Verify the following conditions do not exist: The control module's circuit terminals and connectors = Incorrect
    • If a condition exists - Repair or replace as necessary
    • Go to next step: If no condition exists
  5. Verify DTC C2A23 is not set.
    • If the DTC is set 

      Replace the component: K160 Brake System Control Module

    • Go to next step: If the DTC is not set 
  6. All OK.
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