IC Bus CE Series 2020, Operation And Maintenance Manual

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Operation
Stability Control Systems – Bendix ® Electronic
Stability Program (ESP)
WARNING
To prevent personal injury and / or death, or
damage to property, do not rely on the stability
control systems while driving in hazardous
conditions such as rain, snow / ice, gravel, and
other loose surfaces.
Use caution and safe
driving practices when maneuvering in these
conditions.
WARNING
To prevent personal injury and / or death, or
damage to property, Stability Control systems
are designed to enhance overall vehicle stability
by automatically reducing vehicle speed under
certain conditions. Drivers operating a Stability
Control equipped vehicle should employ safe
driving practices and assume no additional
driving risks.
CAUTION
To prevent property damage, modification
to vehicles equipped with stability control
systems require prior approval through Navistar
or the stability control system manufacturer.
Unapproved
modifications may result in
diminished stability control performance.
NOTE: This section gives a brief explanation of the
Electronic Stability Control system, for more information
refer to http://www.bendix.com
The stability control system provides the core ABS function,
as well as Automatic Traction Control (ATC) and roll stability
functions.
Core ABS Functions: The core ABS system reduces wheel
lockup to help drivers maintain steering control while braking.
Antilock Braking Systems (ABS) use wheel speed sensors,
ABS pressure modulator valves, and an Electronic Control
Unit (ECU) to control either four or six wheels of a vehicle.
ECUs optimize slip between the tire and the road surface by
monitoring individual wheel turning motion during braking.
Yaw Control: This function reduces the tendency of the vehicle
to spin or jackknife when an under-steer or over-steer event
occurs.
Vehicle Stability Control Speed Reduction: In the case of a
potential roll event, the stability system will remove the throttle
and quickly apply brake pressure to slow the vehicle combination
below the threshold.
Steering Angle Sensor: This sensor enables the advanced
stability system to capture the driver’s steering input and
intervene if a yaw correction is needed.
The sensor also
provides the earliest indication of an increase in lateral
acceleration that might cause a potential roll event. A steering
angle sensor provides a greater stability margin than a vehicle
that is not equipped with this sensor.
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