3-50 DRIVE-CONTROL COMPONENTS - ABS
ACTUATOR
N73zN02M
HYDRAULIC UNIT (HU)
l The HU, elastically supported by the shield plate
When the ABS is active, the motor is operated
at the front left of the engine compartment, con- Lj
by a signal from the ABS-ECU to let the pump
sists of a motor pump, plunger valve, reservoir
and three solenoid valves. generate a hydraulic pressure required to return
fluid against master cylinder pressure. At the
l The HU, positioned between the brake master
same time, three solenoid valves are operated
cylinder and each wheel cylinder, is a hydraulic
to control the hydraulic pressure that acts on
circuit split into two systems associated with
the wheel cylinder.
the normal X pipings when the ABS is inactive.
Solenoi
14x0305
Hydraulic unit d
I----- - --------___ 1
Master cylinder
- -.
/
Wheel speed sensor
14FOO54
Solenoid valve and select-low valve
Refer to 1991 3000GT Technical Information Manual (Pub. No. PXSE9001).
Relay box
Refer to P. 3-33.
MOTOR RELAY
Refer to P. 3-33.
VALVE RELAY
Refer to P. 3-33.
ABS WARNING LIGHT
Refer to P. 3-33.