Circuit/System Verification

Ignition/Vehicle - Off
Verify there are no leaks in the component/system: Brake System - Refer to: Brake Fluid Loss
Verify the brake pads are fully seated
- If the brake pads are not fully seated
1. Disconnect the battery
2. Gradually apply the brake pedal to approximately 2/3 of its travel distance.
3. Wait 15 seconds and repeat until pedal is firm.
4. Reconnect battery.
5. Verify DTC C05B0 is not set.
  - If DTC C05B0 is not set
    All OK.
  - Go to next step: If DTC C05B0 is set
- Go to next step: If the brake pads are fully seated
Clear code DTC C05B0
- If code does not reset
  All OK.
- Go to next step: If code does reset
Ignition - On / Vehicle - In Service Mode
Perform the scan tool control function: Brake Hydraulics Test
- If the procedure/test does not pass
  Refer to: Hydraulic Brake System Bleeding (Pressure)
- Go to next step: If the procedure/test passes
Ignition/Vehicle - Off - For greater than 5 min
Fill the brake fluid reservoir to the full level indicator.
Ignition/Vehicle - On - For greater than 30 s - Brake Pedal Not Applied
Ignition/Vehicle - Off - For greater than 5 min
Verify DTC C05B0 is not set
- If DTC C05B0 is set
  Replace the component: A104 Brake Master Cylinder
- Go to next step: If the DTC is not set
All OK.