My brother has an ES300 Lexus 93', so far its been working fine but yesterday the Cars breaks completley locked up. all four... we jacked the car up and took all tire off, so far the only thing I tried to do is Bleed the break system but no fluid come out of the small bleeder in the calipers, exept for the driverside front caliper .

I was thinking it might be something with the ABS ACTUATOR because we checked the lines and they are not cloged. The Break peddle has little pressure but still makes brake fluid squirt from the front Driverside Caliper.

Is there any way to diagnose the prob better before we go out buying new ACTUATOR and parts we dont need. If the cars ABS Control relay had gone out a check light would have appeared right.

I know this is long but any help would be greatly appreciated.

 

I'm not familiar with ABS systems but you could try looking for post at www.clublexus.com

 

Thanx, I went to the lexus forum but they dont know anything, theres a guys there that post the same thread over and over about his break prob and no one answeres his question about the ABS.

As you can see the Master Cylinder drops fluid to the ACTUATOR and the hydrolic sylenoids from inside the actuator pressure the break system, my prob is only one caliper has pressure (Front Driverside). Would any one know if there is some sort of sensor that messures how much presure the actuator applies and whats its called I would greatly appreciate it.

I was thinking 3 Hydrolic pumps on the actuator went bad and thats why only one has presure. (front driverside) IF the ACTUATOR went bad then would the ECU have some sort of code for it?

I know this is long but I need serious help.