Anti-lock brake system (abs) -28, Warning – NISSAN CVT SIC0697 User Manual

Page 185

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To help save the brakes and to prevent the

brakes from overheating, reduce speed and

downshift to a lower gear before going down a

slope or long grade. Overheated brakes may

reduce braking performance and could result in

loss of vehicle control.

WARNING

¼ While driving on a slippery surface,

be careful when braking, accelerat-
ing or downshifting. Abrupt braking
or accelerating could cause the
wheels to skid and result in an acci-
dent.

¼ If the engine is not running or is

turned off while driving, the power
assist for the brakes will not work.
Braking will be harder.

ANTI-LOCK BRAKE SYSTEM (ABS)

The anti-lock brake system controls the brakes

at each wheel so the wheels will 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 swerving and spinning on slippery sur-

faces.

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 will not operate at

speeds below 3 to 6 MPH (5 to 10 km/h) to

completely stop the vehicle. (The speeds will

vary according to road conditions.) When the

anti-lock system senses that one or more wheels

are close to locking up, the actuator (under the

hood) rapidly applies and releases hydraulic

pressure (like pumping the brakes very quickly).

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 that the anti-lock system

is working properly. However, the ABS operation

may indicate that road conditions are hazardous

and extra care is required while driving.

Self-test feature

The anti-lock brake system consists of electronic

sensors, electric pumps, and hydraulic solenoids

controlled by a computer. The computer 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 mal-

function, it switches the anti-lock brake system

OFF and turns on the ABS warning light in the

meter. The brake system will then behave nor-

mally, but without anti-lock assistance.
If the light comes on during the self check, or

while you are driving, you should take your

vehicle to your NISSAN dealer for repair at your

earliest convenience.

WARNING

The anti-lock brake system is a sophis-
ticated device, but it cannot prevent ac-

5-28

Starting and driving

04.4.5/Z50-D/V5.0

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