PREVOST X3-45 Multiplex, Руководство по обслуживанию

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3 Diagnostics, Troubleshooting and Testing
15
Meritor WABCO Maintenance Manual MM-0112 (Revised 07-05)
4. From the pull-down menu, select Faults to bring up the Fault
Information screen. Figure 3.3.
Figure 3.3
5. A description of the fault, the number of times the fault
occurred, the system identifier (SID) and the failure mode (FMI)
are all displayed in the fault information window. Basic repair
instructions for each fault are also provided. Figure 3.3.
For detailed repair instructions, click on the fault to display a
troubleshooting information sheet.
Bookmark and Thumbnail
tabs at the side of the troubleshooting information sheet
provide additional information. A s ample troubleshooting
information sheet appears in the Appendix. This screen also
provides a link to the appropriate system schematic.
Faults that may occur after the screen is displayed will not
appear until a screen update is requested. Use the
update
button to refresh the fault information table.
After making the necessary repairs, use the clear faults
button to clear the fault. Use the update button to refresh the
fault information table and display the new list of faults.
Use the Save or Print button to save or print the fault
information data.
Blink Code Diagnostics (Tractor ABS Only)
Definitions
Before using blink code diagnostics, you should be familiar with a
few basic terms. If you used previous versions of Meritor WABCO’s
blink code diagnostics, review these definitions to identify major
changes.
ABS Indicator Lamp: This lamp serves two purposes: it alerts
drivers to an ABS tractor fault and it is used during diagnostics to
display the blink code.
Blink Code: A series of blinks or flashes that describe a particular
ABS system fault or condition.
Blink Code Cycle: Two sets of flashes with each set separated by a
one-and-one-half second pause. Blink codes are defined in the blink
code identification information in this section.
Blink Code Switch: A momentary switch that activates blink code
diagnostic capabilities. Switch types and locations vary, depending
on the make and model of the vehicle.
Clear: The process of erasing faults from the ECU.
Diagnostics: The process of using blink codes to determine ABS
system faults.
Fault: An ABS malfunction detected and stored in memory by the
Meritor WABCO ECU. System faults may be Active or Stored.
Active Fault: A condition that currently exists in the ABS system;
for example, a sensor circuit malfunction on the left front steering
axle. An active fault must be repaired before it can be cleared from
memory — and before you can display additional blink code faults.
Stored Fault: There are two types of stored faults:
A. A repaired active fault that has not been cleared from the ECU.
B. A fault that occurred but no longer exists . For example, a
loose wire that makes intermittent contact. Because stored
faults are not currently active, they do not have to be repaired
before they can be cleared from memory.
Meritor WABCO recommends you keep a record of these faults for
future reference.
System Configuration Code: One digit code displayed during the
clear mode. Blink codes for common ABS system configurations are
shown in Figure 3.4.
Figure 3.4
Figure 3.3
4005322a
Figure 3.4
4S/4M
6S/6M - 6x2
6S/4M
1002020c
6S/6M - 6x4
NUMBER OF
FLASHES
ABS
CONFIGURATION