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Home >> Buick >> 2018 >> Regal GS >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC C012A >> Circuit/System Testing

Circuit/System Testing

  1. Ignition ON.
  2. Verify that DTC C012A is not set.
    • If DTC C012A is set 
    1. Replace the Q5 Brake Pressure Modulator.
    2. Verify that DTC C012A is not set while driving the vehicle under normal braking conditions.
      • If DTC C012A is set, replace the K17 Electronic Brake Control Module.
      • Go to next step: If DTC C012A is not set.
    3. All OK.
    • Go to next step: If DTC C012A is not set 
  3. All OK.
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