operators_manual

illuminate whenever the ATC system
detects drive wheel spin. The lamp will
remain illuminated as long as wheel spin is
detected and the ATC system is applying
the drive wheel brakes or reducing engine
torque. Engine torque or vehicle speed
should be reduced to eliminate wheel spin
and prevent excessive application of the
ATC system.
Except for checking for proper illumination
of the ABS and traction control warning
lamps when first starting the vehicle, and
for monitoring these lamps while driving,
no special operating procedures are
required. For detailed system description,
see literature for your specific ABS that
was provided with your vehicle.
This feature helps improve traction when
vehicles are on slippery surfaces or
surfaces with poor traction (i.e. mud or
snow) by reducing drive wheel overspin.
Automatic traction control works
automatically in two different ways:
• If a drive wheel starts to spin, ATC
applies air pressure to brake the
wheel. This transfers engine torque
to the wheels with better traction.
• If all drive wheels spin, ATC reduces
engine torque to provide improved
traction.
ATC turns itself on and off, you do not have
to select this feature. If drive wheels spin
during acceleration, the ATC Warning
Lamp comes on, indicating wheel spin
control is active. Do not allow the ATC
Warning Lamp to remain on continuously
for an extended length of time. Extended,
continuous use of the ATC can cause
overheating of the drive wheel brakes.
Deep Snow and Mud Switch
A deep snow and mud switch is included
with Automatic Traction Control (ATC). The
Deep Snow and Mud feature is helpful
during acceleration. This function
increases available traction on extra soft
surfaces like snow, mud or gravel, by
slightly increasing the permissible wheel
spin. When this function is in use, the ATC
Warning Lamp blinks continuously.
Off-Road ABS Function Switch
(option)
Your vehicle may be equipped with a
separate switch to activate an Off-Road
ABS function. This function is NOT to be
used for On-Highway driving but is
intended to be used to improve stopping
performance in Off-Highway conditions
(e.g., loose gravel and mud). The Off-Road
ABS function is accomplished by allowing
a "wedge" of material to build-up in front of
momentarily locked wheels.
• Changes the ABS control limits to
allow for a more aggressive ABS
function while off-road.
• Improves vehicle control and helps
reduce stopping distances in off-
road conditions or on poor traction
surfaces such as loose gravel,
sand, and dirt.
• Allows retarders to function
independently of the ABS function.
• If your vehicle does not have an
engine retarder, the Off- Road ABS
switch will function the same.
DRIVING - Brakes
Y53-6096-1A1 (01/17) 111
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