PREVOST X3-45 Multiplex, Maintenance Manual

Page: 586 / 1422

12
REVISED 5/31/05
SYSTEM IMPACT DURING ACTIVE
TROUBLE CODES
ABS PARTIAL SHUTDOWN
Depending on which component the trouble code is
detected, the ABS, ATC, and ESP functions may be fully
or partially disabled. Even with the ABS indicator lamp
illuminated, the EC-60
™
controller may still provide ABS
function on wheels that are not affected. The ABS system
controller should be serviced as soon as possible.
Steer Axle ABS Modulator Diagnostic Trouble
Code
ABS on the affected wheel is disabled. ABS and ATC on
all other wheels remains active. ESP is disabled.
Drive Axle/Additional Axle ABS Modulator
Diagnostic Trouble Code
ATC is disabled. ABS on the affected wheel is disabled. ABS
on all other wheels remains active. ESP is disabled.
Steer Axle Wheel Speed Sensor Diagnostic
Trouble Code
The wheel with the diagnostic trouble code is still controlled
by using input from the remaining wheel speed sensor on
the steer axle. ABS remains active on the rear wheels.
ATC and ESP are disabled.
Drive Axle/Additional Axle Wheel Speed Sensor
Diagnostic Trouble Code
ATC and ESP are disabled. In a four sensor system, ABS
on the affected wheel is disabled, but ABS on all other
wheels remains active.
In a six sensor system, ABS remains active by using input
from the remaining rear wheel speed sensor on the same
side.
ATC Modulator Diagnostic Trouble Code
ATC and ESP are disabled. ABS remains active.
J1939 Communication Diagnostic Trouble Code
ATC and ESP are disabled. ABS remains active.
ECU Diagnostic Trouble Code
ABS, ATC, and ESP are disabled. The system reverts to
normal braking.
Voltage Diagnostic Trouble Code
While voltage is out of range, ABS, ATC, and ESP are
disabled. The system reverts to normal braking. When the
correct voltage level is restored, full ABS and ATC function
is available. Operating voltage range is 9.0 to 17.0 VDC.
Steering Angle Sensor Diagnostic Trouble Code
ESP is disabled. ABS and ATC remain active.
Yaw Rate/Lateral Acceleration Sensor
Diagnostic Trouble Code
ESP is disabled. ABS and ATC remain active.
Brake Demand Pressure Sensor Diagnostic
Trouble Code
ESP is disabled. ABS and ATC remain active.
Load Sensor Diagnostic Trouble Code
ESP is disabled. ABS and ATC remain active.
Steer Axle TCV Diagnostic Trouble Code
ESP is disabled. ABS and ATC remain active.
Trailer PMV Diagnostic Trouble Code
ESP is disabled. ABS and ATC remain active.
SYSTEM CONFIGURATION
The EC-60
™
controller is designed to allow the technician to
change the default system settings (chosen by the vehicle
OEM) to provide additional or customized features.
Depending on the model, the customizable features include
ABS control settings, engine module communication etc.
Many of these settings can be reconfigured using a hand
held or PC-based software, such as the Bendix
®
ACom
™
Diagnostics program.
ECU RECONFIGURATION
Reconfigurating an EC-60
™
controller may be carried out
by using the Blink Code Switch or by using a hand-held
or PC-based diagnostic tool.
Note: During the reconfiguration process, and independently
from any reconfiguration being carried out by the technician,
the ECU will automatically check the J1939 serial link and
communicate with other vehicle modules. In particular, if
the serial link shows that the vehicle has a retarder device
present, the ECU will configure itself to communicate with
the retarder device for improved ABS performance. For
example, if the ECU detects the presence of a retarder
disable relay during a reconfiguration, it will configure
itself to control the relay to disable the retarding device
as needed.
6S/5M Configuration
Advanced EC-60
™
controllers will configure for 6S/5M
operation when a reconfiguration event is initiated and
the ECU detects that an additional axle PMV is wired as
follows:
PMV Connector ECU Connector
Hold Right Additional Axle Hold
Release Left Additional Axle Release
Common Right Additional Axle Common
Reconfiguration Using the Blink Code Switch
With ignition power removed from the EC-60
™
controller,
depress the blink code switch. After the ignition power is
activated, depress and release the switch seven times to
initiate a reconfiguration event.
Diagnostic Tool
A reconfiguration event may be initiated using a hand-held
or PC-based diagnostic tool to communicate with the ECU
over the SAE J1587 diagnostic link.