The anti-lock brake system controls the
brakes at each wheel so the wheels do not
lock when braking abruptly or when braking
on slippery surfaces. The system detects the
rotation speed at each wheel and varies the
brake fluid pressure to prevent each wheel
from locking and sliding. By preventing wheel
lockup, the system helps the driver maintain
steering control and helps to minimize swerv-
ing and spinning on slippery surfaces.
Using the system
Depress the brake pedal and hold it down.
WARNING
Do not pump the brake pedal. Doing so
may result in increased stopping dis-
tances.
Normal operation
The anti-lock brake system does not operate
at speeds below 3 to 6 MPH (5 to 10 km/h) to
completely stop the vehicle. (The speeds vary
according to road conditions.) When the anti-
lock system senses one or more wheels are
close to locking up, the actuator (under the
hood) rapidly applies and releases hydraulic
pressure (like pumping the brakes veryquickly). While the actuator is working, you
may feel a pulsation in the brake pedal and
hear a noise or vibration from the actuator
under the hood. This is normal and indicates
the anti-lock system is working properly. How-
ever, the pulsation may indicate road condi-
tions are hazardous and extra care is required
while driving.
Self-test feature
The anti-lock brake system consists of elec-
tronic sensors, electric pumps, and hydraulic
solenoids controlled by a computer. The com-
puter has a built-in diagnostic feature that
tests the system each time you start the
engine and move the vehicle at a low speed in
forward or reverse. When the self-test occurs,
you may hear a ``clunk'' noise and/or feel a
pulsation in the brake pedal. This is normal
and is not an indication of any malfunction. If
the computer senses any malfunction, it
switches the anti-lock brake system OFF and
turns on the ABS brake warning light in the
dashboard. The brake system then operates
normally, but without anti-lock assistance.
If the light comes on during the self-test, or
while driving, take your vehicle to your NIS-
SAN dealer for repair at your earliest conve-
nience.
WARNING
The anti-lock brake system is a sophis-
ticated device, but it cannot prevent
accidents resulting from careless or
dangerous driving techniques. It can
help maintain vehicle control during
braking on slippery surfaces, but re-
member that the stopping distance on
slippery surfaces will be longer than on
normal surfaces, even with the anti-
lock system. Stopping distances may
also be longer on rough, gravel or
snow covered roads, or if you are using
tire chains. Always maintain a safe dis-
tance from the vehicle in front of you.
Ultimately, the responsibility for safety
of self and others rests in the hands of
the driver.
Tire type and condition of tires may
also affect braking effectiveness.
cWhen replacing tires, install the
specified size of tires on all 4 wheels.
ANTI-LOCK BRAKE SYSTEM
(ABS) (if so equipped)
4-15
ZX
