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Black plate (379,1)
Model "S51-D" EDITED: 2008/ 3/ 26
reverse.When the self-test occurs,you may
hear a “clunk” noise and/or feel a pulsa-
tion in the brake pedal. This is normal and
does not indicate a malfunction. If the
computer senses a malfunction, it switches
the ABS off and illuminates the ABS
warning light on the instrument panel.
The brake system then operates normally,
but without anti-lock assistance.
If the ABS warning light illuminates during
the self-test or while driving, have the
vehicle checked by an INFINITI dealer.
Normal operation
The ABS operates at speeds above 3 to 6
MPH (5 to 10 km/h). The speed varies
according to road conditions.
When the ABS senses that one or more
wheels are close to locking up, the actuator
rapidly applies and releases hydraulic
pressure. This action is similar to pumping
the brakes very quickly. You may feel a
pulsation in the brake pedal and hear a
noise from under the hood or feel a
vibration from the actuator when it is
operating. This is normal and indicates
that the ABS is operating properly. How-
ever, the pulsation may indicate that road
conditions are hazardous and extra care is
required while driving.
When accelerating or driving on slippery
surfaces, the tires may spin or slide. With
the Vehicle Dynamic Control (VDC) system,
sensors detect these movements and
control the braking and engine output to
help improve vehicle stability.
. When the VDC system is operating, the
“SLIP” indicator in the instrument
panel blinks.
. If the “SLIP” indicator blinks, the road
conditionsareslippery.Besureto
adjust your speed and driving to these
conditions. Be sure to drive carefully.
(See “Slip indicator light” in the “2.
Instruments and controls” section, and
“Vehicle Dynamic Control (VDC) off
indicator light” in the “2. Instruments
and controls” section.)
. Indicator light
If a malfunction occurs in the system,
the “SLIP” and “VDC OFF” indicator
lights illuminate in the instrument
panel. As long as these indicators are
illuminated, the VDC system function is
canceled.
The VDC system uses an Active Brake
Limited Slip (ABLS) function to improve
vehicle traction. The ABLS system works
when one of the driving wheels is spinning
on a slippery surface. The ABLS system
brakes the spinning wheel, which distri-
butes the driving power to the other drive
wheel. If the vehicle is operated with the
VDC OFF switch pushed and the VDC
system turned off, all VDC systems will
be turned off. The ABLS system and ABS
will still operate with the VDC system off. If
the ABLS system is activated, the “SLIP”
indicator will blink and you may hear a
clunk noise and/or feel a pulsation in the
brake pedal. This is normal and is not an
indication of a malfunction.
While the VDC system is operating, you
may feel a pulsation in the brake pedal and
hear a noise or feel a vibration from under
the hood.This is normal and indicates that
the VDC system is working properly.
The VDC system 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 forward or
backward. 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 a malfunction.
WARNING
. The VDC system is designed to help
improve driving stability but does not
prevent accidents due to abrupt steering
VEHICLE DYNAMIC CONTROL (VDC) SYSTEM
Starting and driving 5-77