Toyota Corolla Cross: Id Code Box

 Electronic Brake Booster Motor "A" Drive Circuit Internal Electronic Failure (C12BF49,...,C12BF9E)

DESCRIPTION The motor relay is built into the brake booster with master cylinder assembly. The electric brake booster (brake booster with master cylinder assembly) turns the motor relay on to operate the motor in the brake booster with master cylinder assembly in accordance with the operatio

 Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS HINT: Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the GTS when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2