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Circuit/System Verification

  1. Ignition - On/Vehicle - In Service Mode
  2. Perform the scan tool control function: Deactivate Brake Boost System
  3. Verify there are no leaks in the component/system: Brake System - Refer to: Brake Fluid Loss
  4. Apply the brake pedal. - More than 2 times.
  5. Ignition/Vehicle - Off - For greater than 10 min
  6. Ignition - On/Vehicle - In Service Mode - Brake Pedal Not Applied
  7. Perform the scan tool control function: Brake Hydraulics Test
    • Go to next step: If the procedure/test passes 
  8. Perform the following steps: - 10 times
    1. Apply the brake pedal slowly from 0- 40bar
    2. Hold the pressure constant for at least 10s
    3. Release the brake pedal slowly
  9. Wait 30s
  10. Verify DTC C2A22 is not set
    • If DTC C2A22 is set 

      Replace the component: A104 Brake Master Cylinder

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