sensor NISSAN ALTIMA 2001 L30 / 2.G Owners Manual

SUPPLEMENTAL AIR BAG
WARNING LIGHT
The supplemental air bag warning light, dis-
playing
in the instrument panel, moni-
tors the circuits of the supplemental front air
bag, supplemental side air bag (if so
equipped) and pre-tensioner seat belt sys-
tems. The circuits monitored by the supple-
mental air bag warning light are the diagno-
sis sensor unit, satellite sensors, front air
bag modules, side air bag modules, pre-
tensioner seat belts and all related wiring.
When the ignition key is in the ON or STARTposition, the supplemental air bag warning
light illuminates for about 7 seconds and
then turns off. This means the system is
operational.
If any of the following conditions occur, the
supplemental front air bag, supplemental
side air bag (if so equipped) and pre-
tensioner seat belt systems need servicing:
cThe supplemental air bag warning light
remains on after approximately 7 sec-
onds.
cThe supplemental air bag warning light
flashes intermittently.
cThe supplemental air bag warning light
does not come on at all.
Under these conditions, the supplemental
front air bag, supplemental side air bags (if
so equipped) or pre-tensioner seat belt sys-
tems may not operate properly. It must be
checked and repaired. Take your vehicle to
the nearest authorized NISSAN dealer.
WARNING
If the supplemental air bag warning
light is on, it could mean that the
supplemental front air bag, supplemen-tal side air bag system (if so equipped)
or pre-tensioner seat belt systems will
not operate in an accident.
Repair and replacement procedure
The supplemental front air bag modules or
supplemental side air bags are designed to
inflate on a one-time-only basis. As a re-
minder, unless it is damaged, the supple-
mental air bag light remains illuminated
after inflation has occurred. Repair and re-
placement of these supplemental air bag
systems should be done only by an autho-
rized NISSAN dealer.
To ensure long-term functioning, these
supplemental air bag systems must be
inspected 10 years after the date of
manufacture as noted on the certifica-
tion label located on the driver side front
pillar.
When maintenance work is required on the
vehicle, the supplemental front air bags,
supplemental side air bags and related
parts should be pointed out to the person
conducting the maintenance. The ignition
key should always be in the LOCK position
WRS0080
Seats, restraints and supplemental air bag systems1-19
ZX

WARNING
c
While driving on a slippery surface,
be careful when braking, accelerating
or downshifting. Abrupt braking or
accelerating could cause the wheels
to skid and result in an accident.
cIf the engine is not running or is
turned off while driving, the power
assist for the brakes will not work.
Braking will be harder.
Wet brakes
When the vehicle is washed or driven
through water, the brakes may get wet. As a
result, your braking distance will be longer
and the vehicle may pull to one side during
braking.
To dry brakes, drive the vehicle at a safe
speed while lightly pressing the brake pedal
to heat-up the brakes. Do this until the
brakes return to normal. Avoid driving the
vehicle at high speeds until the brakes
function correctly.
ANTI-LOCK BRAKE SYSTEM
(ABS) (if so equipped)
The anti-lock brake system installed in
some models controls the brakes at each
wheel so the wheels do not lock when
braking abruptly or when braking on slip-
pery surfaces. The system detects the rota-
tion 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 mini-
mize swerving 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 oper-
ate at speeds below 3 to 6 MPH (5 to 10
km/h). The speeds vary according to roadconditions. 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 pres-
sure (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 pulsation may indicate that
road conditions are hazardous and extra
care is required while driving.
Self-test feature
The anti-lock brake system is sophisticated,
with electronic sensors, electric pumps, and
hydraulic solenoids controlled by a com-
puter. The computer has a built-in diagnos-
tic 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 indica-
tion 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.
5-18Starting and driving
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