48 SEBU8605-01
Operation Section
Engine Diagnostics
i03554534
Engine Operatio n with Active
Diagnostic Co
des
If a diagnostic lamp illuminates during normal engine
operation, the system has identified a situation that
is not withi
n the specification. Use electronic service
tools to check the active diagnostic codes.
Note: If the
customer has selected “DERATE” and if
there is a low oil pressure condition, the Electronic
Control Module (ECM) will limit the engine power
until the p
roblem is corrected. If the oil pressure is
within the normal range, the engine may be operated
at the rated speed and load. However, maintenance
should be p
erformed as soon as possible.
The active diagnostic code should be investigated.
The cause
of the problem should be corrected as
soon as possible. If the cause of the active diagnostic
code is repaired and there is only one active
diagnos
tic code, the diagnostic lamp will turn off.
Operation of the engine and performance of the
engine c
an be limited as a result of the active
diagnostic code that is generated. Acceleration
rates may be significantly slower. Refer to the
Troubl
eshooting Guide for more information on the
relationship between these active diagnostic codes
and engine performance.
i01902995
Engine Operatio n wit h
Intermittent
Diagnostic Cod es
If a diagnostic lamp illuminates during normal engine
operation and the diagnostic lamp shuts off, an
intermitte
nt fault may have occurred. If a fault has
occurred, the fault will be logged into the memory of
the Electronic Control Module (ECM).
In most cases, it is not necessary to stop the engine
because of an intermittent code. However, the
operator s
hould retrieve the logged fault codes
and the operator should reference the appropriate
information in order to identify the nature of the event.
The operat
or should log any observation that could
have caused the lamp to light.
•
Low power
•
Limits of the engine speed
•
Excessive smoke, etc
This inf
ormation can be useful to help troubleshoot
thesituation.Theinformationcanalsobeusedfor
future reference. For more information on diagnostic
codes,
refer to the Troubleshooting Guide for this
engine.
i04217251
Configuration Parameters
The engine electronic control module (ECM) has
two types of configuration parameters. The system
configuration parameters and the customer specified
parameters.
The electronic service tool is required in order to alter
the configuration parameters.
System Configuration Parameters
System configuration parameters affect the emissions
of the engine or the power of the engine. System
configuration parameters are programmed at the
factory. Normally, system configuration parameters
would never require changing through the life
of the engine. System configuration parameters
must be reprogrammed if an ECM is replaced.
System configuration parameters do not require
reprogrammed if the ECM software is changed.
Factory passwords are required to change these
parameters.
To Next Page
Loading...
