Outline Of Diagnosis

After the power switch is turned off, the electric brake booster control module automatically performs a pressure increase check to detect malfunctions that would be difficult to detect during normal braking. During the current trip when the vehicle is being driven at a certain speed or more and the specific sequence is met, if the electric brake booster control module judges that there is a malfunction in a brake line, the MIL is illuminated and this DTC is stored.