brake sensor NISSAN FRONTIER 1996 D22 / 1.G Owners Manual

the brakes return to normal. Avoid driving
the vehicle at high speeds until the
brakes function correctly.
cAvoid resting your foot on the brake
pedal while driving. This will overheat the
brakes, wear out the brake linings and
pads faster and reduce gas mileage.
cTo help reduce brake wear and to pre-
vent the brakes from overheating, before
going down a slope or long grade, reduce
speed and downshift to a lower gear.
cWhile driving on a slippery surface, be
careful when braking, accelerating or
downshifting. Abrupt braking actions or
sudden acceleration could cause the
wheels to skid.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 road
conditions.)
When driving in the 2-wheel drive mode, the
rear anti-lock brake system controls the rear
wheels so they will not lock when braking
abruptly or when braking on a slippery road.
Thus, difficult steering and swerving of the
vehicle due to locked rear wheels is mini-
mized. The system detects the rear wheel
rotation rate and electronically controls the
pressure applied to each rear brake. Slight
vibration on the brake pedal accompanied
by noise usually occurs while the ABS sys-
tem is operating. Such vibration and noise
encountered during abrupt braking is not a
problem, but indicates that the system is
functioning.
Even with the rear anti-lock brake sys-
tem, your front wheels can still lock. If
this happens, release the brake pedal
slightly and then reapply pressure.
Self-test feature
The rear anti-lock brake system consists of
an electronic sensor and two hydraulic so-lenoids 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 rear 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 an abnormality occurs in the system, the rear
anti-lock function will cease but the ordinary
brakes will continue to operate normally. The
ABS brake warning light will then come on.
If the light comes on while you are driving,
contact your NISSAN dealer for repair.
The rear anti-lock brake system
may only be effective when driving in the
2-wheel drive mode.
When driving in the 4-wheel drive mode, the
rear anti-lock brake system may not be
effective in many cases because the front
axle is connected with the rear axle through
REAR ANTI-LOCK BRAKE
SYSTEM (R-ABS)
4-26
ZX