Rise Mode-Brake Pressure Increasing

Fig 1: Illustrating Rise Mode-Brake Pressure Increasing

Courtesy of KIA MOTORS AMERICA, INC.

Operating condition 

Fig 2: Rise Mode-Brake Pressure Increasing Operation Chart

Courtesy of KIA MOTORS AMERICA, INC.

If it is judged that there is no lock phenomenon in wheels, then ABS ECU interrupts electricity in solenoid valve therefore each solenoid valve is turned OFF and the liquid pressure by motor pump passes the solenoid valve IN to arrive at wheel cylinder so that pressure is increased.

Fail-safe function 

If failure occurred in ABS ECU system and the hydraulic, then the fail-safe circuit turns off the relay that supplies electricity to solenoid valve, stopping the control signal output, lighting the warning lamp at the same time to inform ABS failure to driver, in which case the ordinary brake function is secured under same condition as vehicles without ABS system.