Engine Diagnostics
i02651093
Self-Diagnostics
Perkins
electronic
engines
have
the
capability
to
perform
a
self-diagnostics
test.
When
the
system
detects
an
active
problem,
a
diagnostic
lamp
is
activated.
Diagnostic
codes
will
be
stored
in
permanent
memory
in
the
Electronic
Control
Module
(ECM).
The
diagnostic
codes
can
be
retrieved
by
using
the
electronic
service
tool.
Refer
to
Troubleshooting
,
“Electronic
Service
Tools”
for
further
information.
Some
installations
have
electronic
displays
that
provide
direct
readouts
of
the
engine
diagnostic
codes.
Refer
to
the
manual
that
is
provided
by
the
OEM
for
more
information
on
retrieving
engine
diagnostic
codes.
Alternatively
refer
to
Troubleshooting
,
“Indicator
Lamps”
for
further
information.
Active
codes
represent
problems
that
currently
exist.
These
problems
should
be
investigated
first.
Logged
codes
represent
the
following
items:
• Intermittent problems
• Recorded events
• Performance history
The problems may have been repaired since the
logging of the code. These codes do not indicate that
a repair is needed. The codes are guides or signals
when a situation exists. Codes may be helpful to
troubleshoot problems.
When the problems have been corrected, the
corresponding logged fault codes should be cleared.
i02651107
Diagnostic
Lamp
A
diagnostic
lamp
is
used
to
indicate
the
existence
of
an
active
fault.
Refer
to
Troubleshooting
,
“Indicator
Lamps”
for
more
information.
A
fault
diagnostic
code
will
remain
active
until
the
problem
is
repaired.
The
diagnostic
code
may
be
retrieved
by
using
the
electronic
service
tool.
Refer
to
Troubleshooting
,
“Electronic
Service
Tools”
for
more
information.
i02857828
Diagnostic
Flash
Code
Retrieval
““
Diagnostic
””
Lamp
Use
the
“
DIAGNOSTIC
”
lamp
or
an
electronic
service
tool
to
determine
the
diagnostic
flash
code.
Use
the
following
procedure
to
retrieve
the
flash
codes
if
the
engine
is
equipped
with
a
“
DIAGNOSTIC
”
lamp:
1.
Move the keyswitch from the on/off two times
within three seconds.
A flashing YELLOW lamp indicates a 3 digit code for
the engine. The sequence of flashes represents the
system diagnostic message. Count the first
sequence of flashes in order to determine the first
digit of the flash code. After a two second pause, the
second sequence of flashes will identify the second
digit of the flash code. After the second pause, the
third sequence of flashes will identify the flash code.
Any additional flash codes will follow after a pause.
These codes will be displayed in the same manner.
Flash Code 551 indicates that No Detected Faults
have occurred since the ignition keyswitch has been
turned to the ON position.
For further information, assistance for repairs, or
troubleshooting, refer to the Service Manual or
consult your Perkins distributor.
Table3 lists the flash codes and the table also gives a
brief description of the flash codes.
Note:
Table3 indicates the potential effect on engine
performance with
“
ACTIVE
”
flash codes.
Some codes record events. Also, some codes may
also indicate that a mechanical system needs
attention. Troubleshooting is not required for code
“
551
”
. Code 001 will not display a flash code. Some
codes will limit the operation or the performance of
the engine.
Table3 indicates the potential effect on the engine
performance with active flash codes. Table 3 also
forms a list of Electronic diagnostic codes and
descriptions.
38
SEBU8119-04
