Circuit/System Testing

2013 Buick Regal Turbo Premium, Standard TransSECTION Circuit/System Testing
  1. Ignition ON.
  2. Verify that DTC C0035, C0040, C0045, or C0050 is not set.
    • If none of the DTCs are set 
  3. Ignition OFF, disconnect the harness connector at the K17 Electronic Brake Control Module and the X4 harness connector at the A11 Radio, ignition ON.
  4. Test for less than 1 V between the K17 Electronic Brake Control Module signal circuit terminal 7 and ground.
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • If less than 1 V 
  5. Test for infinite resistance between the signal circuit and ground.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  6. Test for less than 2 Ω in the signal circuit end to end.
    • If 2 Ω or greater 

      Repair the open/high resistance in the circuit.

    • If less than 2 Ω 
  7. Replace the K17 Electronic Brake Control Module.
  8. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
    • If the DTC sets 

      Replace the A11 Radio.

    • If the DTC does not set 
  9. All OK.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.