PREVOST LE MIRAGE XLII BUS SHELLS Maintenance Manual Download

Page: 468 / 1260

REVISED 5/31/05

The ESP system only functions within the limits of

physics.
ESP functionality mitigates potential vehicle stability

incidents, but cannot prevent them in all cases. Other

factors such as driving too fast for road, trafﬁc or weather

conditions, oversteering, an excessively high vehicle Center

of Gravity (CG), or poor road conditions can cause vehicle

instability that is beyond the capability of any stability

system to mitigate. In addition, the effectiveness of ESP

can be greatly reduced on vehicles towing multiple trailer

combinations.

CAUTION

The ESP stability system may only be used on vehicles

tested and approved by Bendix engineering. ESP

installations require on-vehicle testing and EC-60 parameter

tuning. See "Advanced ABS with Stability Control" on page

9 for further details.
Accordingly, the EC-60 controller is provided with a

corresponding parameter data set that is validated for a

speciﬁc vehicle platform. Therefore, speciﬁc steps are

necessary should a replacement ECU be required. See

“Obtaining a New EC-60

™

Controller” on page 13 for further

details.
ESP-equipped vehicles should not be driven on high-

banked roads – such as those found on high-speed test or

race tracks. Test personnel must have ESP functionality

disabled prior to operating an ESP vehicle on such

tracks.

YAW CONTROL (YC)

Advanced ECU can include Yaw Control (YC) functionality,

which has the ability to apply brakes to individual wheel

ends, as well as applying the trailer brakes to counteract

trailer “push” that, during certain maneuvers, could lead to

a loss of control or a jackknife incident. See "Yaw Stability"

on page 9 for further details.

ROLL STABILITY PROGRAM (RSP)

The Bendix Roll Stability Program (RSP), is an all-axle

ABS solution that helps reduce vehicle speed by reducing

the engine's throttle and applying all vehicle brakes as

needed, reducing the vehicle's tendency to roll over. RSP

focuses on reducing the vehicle’s speed below the critical

roll threshold during direction-changing maneuvers such as

driving on curved highway exit ramps or obstacle avoidance

maneuvers on dry, high friction surfaces. See "Advanced

ABS with Stability Control" on page 9 for further details.

WARNING

During an RSP system intervention, the vehicle

automatically decelerates.

RSP can slow the vehicle

with or

without the operator applying the brake pedal

and

even when the operator is applying the throttle.

COMPONENTS

The EC-60

™

controller’s ABS function utilizes the following

components:

• Bendix

WS-24

™

wheel speed sensors (4 or 6,

depending on configuration). Each sensor is

installed with a Bendix Sensor Clamping Sleeve

• Bendix

M-32

™

or M-32QR

™

Pressure Modulator

Valves (4, 5, or 6 depending on conﬁguration)

•  Dash-mounted tractor ABS Indicator Lamp
•  Service brake relay valve
•  Dash-mounted trailer ABS Indicator Lamp
•  Optional blink code activation switch
•  Optional ABS off-road switch

PREVOST LE MIRAGE XLII BUS SHELLS, Maintenance Manual

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