Aftertreatment System
Diesel Oxidation Catalyst
(DOC)
Testing
Turning the keyswitch to the ON position will check
the indicator lights on the control panel. All the
indicator lights will be illuminated for 2 seconds after
the keyswitch is operated. Replace suspect bulbs
immediately.
Refer to Troubleshooting for more information.
i08330676
Battery
Disconnect
Switch
(If
Equipped)
Allow
at
least
2
minutes
after
the
engine
has
stopped
before
you
turn
the
battery
disconnect
switch
to
OFF.
Disconnecting
the
battery
power
too
soon
will
prevent
the
engine
Electronic
Control
Module
(ECM)
storing
information
from
the
engine.
Not
allowing
the
engine
ECM
time
to
store
the
information
from
the
sensors
can
damage
the
emission
control
system.
Some
applications,
the
engine
can
be
equipped
with
a
wait
to
disconnect
lamp.
The
wait
to
disconnect
lamp
will
be
illuminated
during
engine
operation
and
will
be
extinguished
approximately
2
minutes
after
the
engine
has
stopped.
Illustration 25
g03265058
Battery disconnect switch label
NOTICE
Do not turn off the battery disconnect switch until the
indicator lamp has turned off. If the switch is turned
off when the indicator lamp is illuminated the Elec-
tronic Control Module (ECM) will stop storing informa-
tion from the engine sensors.
NOTICE
Never move the battery disconnect switch to the OFF
position while the engine is operating. Serious dam-
age to the electrical system could result.
i08308330
Gauges
and
Indicators
Your
engine
may
not
have
the
same
gauges
or
all
the
gauges
that
are
described.
For
more
information
about
the
gauge
package,
see
the
OEM
information.
Gauges
provide
indications
of
engine
performance.
Ensure
that
the
gauges
are
in
good
working
order.
Determine
the
normal
operating
range
by
observing
the
gauges
over
a
period.
Noticeable
changes
in
gauge
readings
indicate
potential
gauge
or
engine
problems.
Problems
may
also
be
indicated
by
gauge
readings
that
change
even
if
the
readings
are
within
specifications.
Determine
and
correct
the
cause
of
any
significant
change
in
the
readings.
Consult
your
Perkins
distributor
for
assistance.
Some
engine
applications
are
equipped
with
Indicator
Lamps.
Indicator
lamps
can
be
used
as
a
diagnostic
aid.
There
are
two
lamps.
One
lamp
has
an
orange
lens
and
the
other
lamp
has
a
red
lens.
These
indicator
lamps
can
be
used
in
two
ways:
• The indicator lamps can be used to identify the
current operational status of the engine. The
indicator lamps can also indicate that the engine
has a fault. This system is automatically operated
via the ignition switch.
• The indicator lamps can be used to identify active
diagnostic codes. This system is activated by
pressing the Flash Code button.
Refer to the Troubleshooting Guide, “Indicator
Lamps” for further information.
NOTICE
If no oil pressure is indicated, STOP the engine. If
maximum coolant temperature is exceeded, STOP
the engine. Engine damage can result.
Engine Oil Pressure – The oil pressure
should be greatest after a cold engine is
started. The typical engine oil pressure
with SAE10W40 is 350 to 450 kPa (50 to 65 psi) at
rated rpm.
A lower oil pressure is normal at low idle. If the
engine speed and load are stable and the gauge
reading changes, perform the following procedure:
32
M0125147