5A–7
BRAKE CONTROL SYSTEM
Pressure Reduction
Once the brake pressure is isolated, it must be reduced to
allow the wheels to unlock. This is accomplished by
dumping a portion of the brake fluid pressure into a low
pressure accumulator.
The microprocessor activates the normally closed dump
valve to open, allowing fluid from the wheels to be
dumped into the accumulator. This is done with very short
activation pulses opening and closing the dump valve
passageway. Brake pressure is reduced at the wheel and
allows the wheel to begin rotating again. The fluid from the
brake piston is stored in the accumulator against spring
pressure and a portion of this fluid also primes the pump.
The dump valves are operated independently to control
the deceleration of the wheel. At this point, the brake
pedal is isolated from the base brake system, the
hydraulic control unit pumps are primed and the
attenuators are ready to pump fluid.
C05RW009
Legend
(1) Brake
(2) Master Cylinder
Summary of Contents for 1999 RODEO
Page 15: ...5A 15 BRAKE CONTROL SYSTEM 060RX063...
Page 18: ...5A 18 BRAKE CONTROL SYSTEM F05RX002...
Page 19: ...5A 19 BRAKE CONTROL SYSTEM F05RX003...
Page 20: ...5A 20 BRAKE CONTROL SYSTEM F05RX004...
Page 21: ...5A 21 BRAKE CONTROL SYSTEM Tech 2 Service Bleed F05RX005...
Page 25: ...5A 25 BRAKE CONTROL SYSTEM Circuit Diagram D08RX108...
Page 26: ...5A 26 BRAKE CONTROL SYSTEM D08RX110...