Electric Brake Booster (EBB) Unit

Except for the brake fluid reservoir, the EBB unit is serviced as a single assembly and must NOT  be disassembled.

The EBB unit contains the ABS module, solenoid valves, pressure sensor and hydraulic pump motor; the EBB unit also takes the place of the brake master cylinder, the vacuum booster, the HCU and the brake pedal switch.

When a new EBB assembly is installed, the ABS module must be programmed with the current vehicle configuration information. For additional information on module programming, Refer to: Module Configuration - System Operation and Component Description .

When an ABS or stability control fault has been corrected or a new component has been installed, the ABS module must be calibrated using the ABS Calibration routine found in the diagnostic scan tool. ABS Calibration is required for the stability control sensors to learn the zero-position of the vehicle which means the vehicle must be on a level surface and not moving.