DANA TM4 SUMO MD MV, Troubleshooting Manual

Page: 143 / 182

143
Service Codes
TT33: Critical low frequency process overrun
Description
The Troubleshooting Tree 33 indicates an error where
the internal software process reached its processing
limit and can’t perform any more tasks.
If the SysFile ID was raised at 00:00 seconds after
start up this event is a minor event, this should be
considered as a warning.
If the SysFile occurred after 00:00 seconds then the
MCU software might be outdated. After updating the
MCU software if there are more occurrences contact
Dana TM4 to continue troubleshooting.
Note : regarding the SysFile
If that error is listed as the first event at 0:00 second
from the unit power ON, this event can be considered
as a warning and does not affect functionality.
Otherwise, if this error is listed at time > 0:00 second,
this event will put the MCU in error.
Note : regarding this type of error
If the software is the latest version as published on the
Dana TM4 extranet site and this error is listed at >
0:00 second after the « Info
– System power-up »
event, this indicates that there is an issue with the
software.
To correctly diagnose the faulty system, connect the
Diagnostic Tool (see «Diagnostics» section for test
equipment and descriptions) and follow the procedure
of troubleshooting tree below.
See “Safety Warnings” and “Troubleshooting Tips”
sections for general guidelines on system diagnostics.
Related Process
The TT33 call the following process:
•
Appendix 6: Update Software
System Mode
Referred by
SysFile ID
Condition Possible Causes
Defective 0x3303
The internal software
process exceeded its
processing limit.
1.
No issue. Warning listed as error if
reported at time 0:00:00 after power up.
2.
MCU software error.