Navistar WorkStar Series, Руководство оператора

Страница: 168 / 258

Operation
monitoring individual wheel turning motion during braking. For
a complete description of the core ABS system, see the ABS
section above.
Traction Control (If Equipped)
WARNING
Traction Control systems are designed to
enhance overall vehicle safety when a vehicle is
driven within its safe operating limits. Traction
Control cannot compensate for a vehicle which
is being driven beyond the physical limits of
control.
Drivers operating a Traction Control
equipped vehicle should employ safe driving
practices and assume no additional driving risks.
Failure to do so could result in property damage,
personal injury, or death.
Your vehicle may be equipped with an optional traction control
system, which helps you maintain the stability and steerability
of your vehicle, especially on snow or ice-covered roads and
gravel roads. It reduces engine power and/or selectively applies
the rear brakes. The system allows your vehicle to make better
use of available traction in these conditions by also limiting the
engine RPM when you push farther on the accelerator, which
limits wheel spin. The traction control indicator will illuminate
steadily if the system is malfunctioning.
NOTE: The traction control braking (ATC action) to limit wheel
spin does not occur at vehicle speeds above approximately 31
mph (50 km/h). Therefore, at speeds above 31 mph (50 km/h),
all ATC events are controlled only by engine power limiting.
The Traction Control switch for Air Brake-equipped
vehicles. If the system is enabled (traction control
switch in the TRAC ENAB position), the traction control
indicator on the instrument panel gauge cluster will
flash during a Traction Control event, and the engine
may not increase RPMs when you push farther on
the accelerator. If the traction control switch is in the
DISAB position, the traction control system is disabled.
ATC System Check
At ignition turn-on, the traction control indicator will illuminate
steadily for 2.5 seconds and then turn off. If not, the system
is defective or inoperative.
ATC OFF ROAD or MUD/SNOW Switch
The optional ATC system comes equipped with one
of two switches that perform the same functions of
enabling and disabling the ATC system.
NOTE: Be sure to turn the ATC OFF ROAD or
MUD/SNOW switch off when you return to a firm
surface.
The function of this switch is to allow greater engine
power and more wheel spin. When operating on soft
road surfaces, place the OFF ROAD or MUD/SNOW
switch in the ENABLE position. The switch indicator
will flash slowly to indicate that this function has
been selected and will flash rapidly whenever ATC is
operating to control excessive wheel spin.
156
3879634R1