Bendix Commercial Vehicle Systems GEN 5 ABS - Manual (Page 13)

13
Fault Codes
DIAGNOSTICS
An important feature of Bendix ABS is the system diagnostic
capability. This section describes how to retrieve
configuration information and error codes to troubleshoot
ABS system diagnostic trouble codes. There are three ways
to retrieve and display ABS configuration information and
trouble codes:
•
ServiceRanger PC software: Displays configuration
information and diagnostic trouble codes on the PC
monitor. Refer to the ServiceRanger PC software
information later in this section.
• ProLink hand-held tester: Displays configuration
information and diagnostic trouble codes on the hand-
held tester display. Refer to the hand-held tester
information later in this section.
• Diagnostic switch: Flashes configuration code and
diagnostic trouble codes on the ABS indicator lamp.
Refer to page 18 for operation of the diagnostic switch.
WARNING! PLEASE READ AND FOLLOW
THESE INSTRUCTIONS TO
AVOID
PERSONAL INJURY OR DEATH:
When working on or around a vehicle, the following
general precautions should be observed at all times.
1. Park the vehicle on a level surface, apply the
parking brakes, and always block the wheels.
Always wear safety glasses.
2. Stop the engine and remove ignition key when
working under or around the vehicle. When
working in the engine compartment, the engine
should be shut off and the ignition key should be
removed. Where circumstances require that the
engine be in operation, EXTREME CAUTION should
be used to prevent personal injury resulting from
contact with moving, rotating, leaking, heated or
electrically charged components.
3. Do not attempt to install, remove, disassemble or
assemble a component until you have read and
thoroughly understand the recommended
procedures. Use only the proper tools and observe
all precautions pertaining to use of those tools.
4. If the work is being performed on the vehicle’s air
brake system, or any auxiliary pressurized air
systems, make certain to drain the air pressure
from all reservoirs before beginning ANY work on
the vehicle. If the vehicle is equipped with an
AD-IS
™ air dryer system or a dryer reservoir module,
be sure to drain the purge reservoir.
5. Following the vehicle manufacturer’s
recommended procedures, deactivate the electrical
system in a manner that safely removes all
electrical power from the vehicle.
6. Never exceed manufacturer’s recommended
pressures.
7. Never connect or disconnect a hose or line
containing pressure; it may whip. Never remove a
component or plug unless you are certain all
system pressure has been depleted.
8. Use only genuine Bendix ® replacement parts,
components and kits. Replacement hardware,
tubing, hose, fittings, etc. must be of equivalent
size, type and strength as original equipment and
be designed specifically for such applications and
systems.
9. Components with stripped threads or damaged
parts should be replaced rather than repaired. Do
not attempt repairs requiring machining or welding
unless specifically stated and approved by the
vehicle and component manufacturer.
10. Prior to returning the vehicle to service, make
certain all components and systems are restored
to their proper operating condition.
11. For vehicles with Antilock Traction Control (ATC),
the ATC function must be disabled (ATC indicator
lamp should be ON) prior to performing any vehicle
maintenance where one or more wheels on a drive
axle are lifted off the ground and moving.
Troubleshooting Procedures
Figure 17 shows an organized approach to troubleshooting
ABS trouble codes. Follow the steps listed below to locate
and correct ABS component and wiring problems.
1. Check that the ABS ECU configuration corresponds to
the ABS components installed on the vehicle.
Reconfigure the ECU if the configuration does not match
the installed ABS components.
2. Access active diagnostic trouble code(s). Inactive
(historical) diagnostic trouble codes are also reported
and may provide additional information to aid in
troubleshooting.
3. Look up the code description, the possible causes and
the repair procedures provided in this section.
4. Perform the recommended repair procedures.
5. After the repairs are completed, clear all codes and
check for any additional codes.