Engine Diagnostics
i05194988
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
Perkins
electronic
service
tools.
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.
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.
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no
longer
active.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.
i01797063
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).
In
most
cases,
it
is
not
necessary
to
stop
the
engine
because
of
an
intermittent
code.
However,
the
operator
should
retrieve
the
logged
fault
codes
and
the
operator
should
reference
the
appropriate
information
in
order
to
identify
the
nature
of
the
event.
The
operator
should
log
any
observation
that
could
have
caused
the
lamp
to
light.
• Low power
• Limits of the engine speed
• Excessive smoke, etc
This information can be useful to help troubleshoot
the situation. The information can also be used for
future reference. For more information on diagnostic
codes, refer to the Troubleshooting Guide for this
engine.
i06225055
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.
For
more
information
on
system
configuration
parameters
and
customer
specified
parameters,
refer
to
Troubleshooting
manual.
M0122761
37