Brake issue, help needed, Toyota Estima, Lucida,1998

[sdaniraza]

I have recently experienced a problem in my Toyota estima Lucida 1998 jdm, regarding its brake. Its brake in normal is working fine, but during an emergency when pedal is pushed suddendly and vigorously , it starts applying brake normal but then it hardens and does not work anyfurther, if you apply more force then it engages ABS normally, but the Pedal becomes so hard that i have to stand on it to stop the van. Brake cylinder seems normal and does not sink. The vacuum boaster works fine in slow speeds and while braking slowly
But it seems a weak brake , and hard pedal during emergency braking.
Can anyone help or experienced similar issue? Before i start swapping spare parts, can any one point me to the right direction here?Uploading...

[sdaniraza]

Anyone?

[Hassan1991]

Everthing is oem?
Vacuum is good?...Bulge in brake lines can cause this issue.
@Xulfiqar

[Xulfiqar]

Your abs pump is acting up, try to cycle it with a scan tool and then immediately retest it.

Or your brake fluid is literally boiling.

[sdaniraza]

ABS works fine, all it needed was a new booster so changed the complete set and new brake fluid. Its working fine, just the pedal needs adjustment. It is a bit lower than usual.

[sdaniraza]

Thanks all for your help