User's Manual

Active Diagnostics
Active diagnostics indicate the presence of active
diagnostic codes in the MSS. A diagnostic code
informs the operator that a problem exists with the
MSS.
If the Cat service tool is available, the service tool
can be used to display all active diagnostic codes.
The service tool will also display codes that have
been logged.
Logged Diagnostics
A logged diagnostic will record problems that are
intermittent in the Machine Security System. Logged
diagnostics eliminate the need to duplicate problems
that are intermittent. Logged diagnostics will increase
the accuracy of diagnosis. The time that is required to
troubleshoot a problem is reduced with the use of
Diagnostics. Logged diagnostics eliminate the need
for trip recorders that are used to capture intermittent
diagnostic information.
The memory of the control module is used to store
diagnostic information. When a diagnostic code is
detected, the following information is logged:
• The CID will identify the component that has
failed.
• The FMI will describe the problem.
• Number of occurrences of the diagnostic code
• The time of the first occurrence that the diagnostic
was detected.
• Last occurrence time, when the diagnostic was
last detected (stored with both machine hours and
RTC stamp)
The problems which can be logged are listed in
Troubleshooting, “Diagnostic Code Procedures”.
The MSS logs the number of times that the machine
is started with the methods that are listed below:
• Starting using an unauthorized method
i06222291
Events
SMCS Code: 7631
An event indicates that the MSS is not operating
correctly. An event does not indicate that there is a
failure with the system.
The MSS records data for the events that are listed in
Table 5 .
Cat
®
Electronic Technician (Cat
ET)
When an abnormal operating condition occurs, the
status screen on Cat Electronic Technician (Cat ET)
indicates that there is an active event.
Event codes are displayed on Cat ET in the following
format:
EXXXX Description of the code
The “E” means that the code is an event code. The
“XXXX” is a numeric identifier. The numeric identifier
is followed by a description of the code.
Active event codes are listed in ascending numerical
order. The code with the lowest number is listed first.
The active event code is removed from the list when
the condition is no longer present.
Logged Event Codes
Some event codes are logged in the ECM memory.
Some event codes are active only. The logged event
codes are listed in chronological order. The most
recent code is listed first.
A logged code is cleared from memory when one of
the following conditions occur:
• The service technician manually clears the code.
• The code does not reoccur for 1000 hours.
• A new code is logged and there are already ten
logged codes in memory. In this case, the oldest
logged code is cleared.
Note: Always clear logged event codes after
investigating and correcting the problem which
generated the code.
UENR7061 11
Systems Operation Section