(Table 3, contd)
426 Machine Security System
Module Fault
(7)
X
429 Ignition Key Switch Fault X
511 ECM Power Supply Voltage
Fault
X X X X
514 SAE J1939 Data Link Fault X X
516 5 Volt Sensor DC Power
Supply Fault
X X
517 8 Volt Sensor DC Power
Supply Fault
X X
527 Customer/System Parmeter
Fault
X X X
(1)
If warning lamps are installed refer to this table. For installations that have electronic displays, refer to the OEM for information.
(2)
An “X” indicates that the effect on engine performance may occur if the code is active.
(3)
The operator should go to the nearest location that has a qualified service program.
(4)
Schedule Service: The problem should be investigated when the operator has access to a qualified service program.
(5)
These Flash Codes may affect the system under specific environmental conditions such as engine start-up at cold temperature and cold
weather operation at high altitudes.
(6)
If the primary engine speed/timing sensor fails there is no automatic protection against reverse running. In this event, Stop the engine imme-
diately. Turn the keyswitch to the “OFF” position. In order to check the correct operation of the sensor, refer to Troubleshooting, “Engine
speed/Timing sensor - Test”.
(7)
The engine will not start.
i01902949
Fault Logging
The system provides the capability of Fault Logging.
When the Electronic Control Module (ECM)
generates an active diagnostic code, the code will be
logged in the memory of the ECM. The codes that
have been logged by the ECM can be identified by
the electronic service tool. The active codes that
have been logged will be cleared when the fault has
been rectified or the fault is no longer active. The
following logged faults can not be cleared from the
memory of the ECM without using a factory
password: Overspeed, low engine oil pressure and
high engine coolant temperature.
i03554534
Engine Operation with Active
Diagnostic Codes
If a diagnostic lamp illuminates during normal engine
operation, the system has identified a situation that is
not within 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 problem 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 performed 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
diagnostic code, the diagnostic lamp will turn off.
Operation of the engine and performance of the
engine can be limited as a result of the active
diagnostic code that is generated. Acceleration rates
may be significantly slower. Refer to the
Troubleshooting Guide for more information on the
relationship between these active diagnostic codes
and engine performance.
i01902995
Engine Operation with
Intermittent Diagnostic Codes
If a diagnostic lamp illuminates during normal engine
operation and the diagnostic lamp shuts off, an
intermittent fault may have occurred. If a fault has
occurred, the fault will be logged into the memory of
the Electronic Control Module (ECM).
40
SEBU8731-04
Operation Section
Fault Logging
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