PREVOST LE MIRAGE XLII BUS SHELLS Maintenance Manual Download

Page: 477 / 1260

REVISED 5/31/05

To Maximize The Effectiveness Of ESP:

• Loads must be properly secured at all times.
• Drivers need to exercise extreme caution at all times,

and avoid sharp turns, sudden steering inputs or abrupt

lane changes at high speeds, particularly if:

› the vehicle hauls loads that could shift,

› the vehicle or load has a high or off-set center of

gravity (CG) when loaded, or

› the vehicle tows doubles or triples.

Truck Chassis Modiﬁcations

If the vehicle’s chassis components are altered (for example,

a wheel base extension or reduction, tag axle addition or

removal, a major body change such as conversion of a

tractor into a truck, or an axle, suspension, or steering system

component modiﬁcation) the Bendix

ESP

system must be

disabled. Have a qualiﬁed mechanic replace the Advanced

EC-60 ECU with a Premium EC-60 ECU and secure the

X4 connector which will no longer be used. The ATC/ESP

indicator lamp would continue to function as an ATC indicator

lamp, and should be designated as ATC only.

WARNING: If a modified vehicle does not have

the ESP system disabled, serious vehicle braking

and performance issues could result, including

unnecessary ESP system interventions. This can lead

to a loss of control of the vehicle. In addition, remove

all cab signage (e.g. visor labels, etc.) used to show

that Bendix ESP was installed and make any necessary

notations in the vehicle manual(s), so that drivers do

not misunderstand which ABS options are installed

on the vehicle.

Sensor Location Modiﬁcations

The location and orientation of the Steering Angle Sensor

and Yaw Rate Sensor must not be altered. When servicing,

an identical component must be used in the same

orientation (using OEM brackets & torque requirements).

During installation follow the OEM leveling guidelines.

Steering Angle Sensor Re-Calibration

Whenever maintenance or repair work is performed to the

steering mechanism, linkage, steering gear, adjustment of

the wheel track, or if the steering angle sensor is replaced,

a recalibration of the Steering Angle Sensor must be

performed.

WARNING! If the Steering Angle Sensor is not

recalibrated, the yaw control system may not function

properly, which can result in incidents leading to loss

of vehicle control. See page 14 of this document for

more details on this procedure.

Dynamometer Test Mode

CAUTION:

ATC and ESP must be disabled prior to

conducting any dynamometer testing. When the

Dynamometer Test Mode is engaged, ATC brake control

and engine control along with drag torque control and ESP

are turned off. This test mode is used to avoid torque

reduction or torque increase and brake control activation

when the vehicle is operated on a dynamometer for testing

purpose.

The Dynamometer Test Mode may be activated by pressing

and releasing the diagnostic blink code switch ﬁve times or

by using a hand-held or PC-based diagnostic tool.
Advanced EC-60

™

Contollers will remain engaged in the

Dynamometer Test Mode even if power to the ECU is

removed and re-applied. To exit the test mode, press and

release the blink code switch three times, or use a hand-

held or PC-based diagnostic tool.

Automatic Tire Size Calibration

The ECU requires a precise rolling circumference ratio

between steer axle and drive axle tires in order for ABS,

ATC, and ESP to perform in an optimal manner. For this

reason, a continuously monitoring process takes place

in which the precise ratio is calculated. This calculated

value is stored in the ECU memory provided the following

conditions are met:
1. Rolling-circumference ratio is within the permissible

range.

2.  Vehicle speed is greater than approximately 12 MPH.
3.  No acceleration or deceleration is taking place.
4.  There are no active speed sensor diagnostic trouble

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