Circuit/System Verification

Ignition - On / Vehicle - In Service Mode
Verify DTC C0049 is not set
- If the DTC is set
  Refer to: Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If the DTC is not set
Test or inspect for the following: Brake System Malfunction
Refer to: Disc Brake System Diagnosis
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
Verify DTC C0594 is not set
- If the DTC is set
  If the DTC sets - Replace the component: A104 Brake Master Cylinder
- Go to next step: If the DTC is not set
All OK.