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Operation—Monitor Operation
KR46761,0001386 -19-21SEP16-1/1
Aftertreatment Indicators Overview
The diesel exhaust uid (DEF) indicator illuminates when
the DEF is low. Fill DEF tank.
When the DEF indicator is combined with the warning
indicator or stop engine indicator, engine performance is
reduced by the engine control unit (ECU) because the
DEF is below a measurable level. Fill DEF tank.
When engine emissions temperature indicator illuminates,
aftertreatment device gas temperature is high, elevated
idle is active, or aftertreatment device regeneration is in
process. The machine can be operated as normal unless
the operator determines the machine is not in a safe
location for high aftertreatment temperatures and enables
aftertreatment device regeneration inhibit.
When engine emissions temperature indicator is
combined with the warning indicator or stop engine
indicator, engine performance is reduced by the ECU
because the aftertreatment gas temperature is higher
than expected. Follow diagnostic trouble code (DTC)
procedure or see an authorized Hitachi dealer.
When the aftertreatment device regeneration indicator
illuminates, the aftertreatment device regeneration is in
process, aftertreatment device system has a malfunction,
or the aftertreatment device is in need of regeneration
and the operator has enabled the aftertreatment device
regeneration inhibit. If conditions are safe, the operator
should disable the aftertreatment device regeneration
inhibit setting or perform manual service regeneration or
follow DTC procedure.
When the aftertreatment device regeneration indicator is
combined with the warning indicator, engine performance
is reduced by the ECU because there is an aftertreatment
system malfunction or the soot level of the aftertreatment
device is moderately high. If conditions are safe,
the operator should disable the aftertreatment device
regeneration inhibit function. If conditions are not safe, the
operator should move the machine to a safe location and
engage the aftertreatment device regeneration. Perform
manual service regeneration or follow DTC procedure.
When the aftertreatment device regeneration is combined
with the stop engine indicator, engine performance
is further reduced by the ECU because there is an
aftertreatment system malfunction or the soot level of the
aftertreatment device is extremely high. If this combination
is present, see an authorized Hitachi dealer.
The aftertreatment device regeneration inhibit indicator
illuminates when the operator has engaged the request
to enable the aftertreatment device regeneration inhibit
function. This icon remains illuminated until the operator
reengages aftertreatment device regeneration from
the diagnostic gauge. Enabling inhibit mode is not
RG22487 —UN—21AUG13
Diesel Exhaust Fluid Indicator
RG22488 —UN—21AUG13
Engine Emissions Temperature
Indicator
RG22489 —UN—21AUG13
Aftertreatment Device
Regeneration Indicator
RG22490 —UN—21AUG13
Aftertreatment Device
Regeneration Inhibit Indicator
RG22491 —UN—21AUG13
Aftertreatment Device
Regeneration System Error Alarm
RG22492 —UN—21AUG13
Warning Indicator
RG22493 —UN—21AUG13
Stop Engine Indicator
recommended for any situation unless it is safety related
or if the fuel tank lacks the required fuel to complete the
regeneration process.
The engine emissions system malfunction indicator
illuminates when engine emissions are outside of normal
operating range or engine emissions system malfunction.
Follow DTC procedure or see an authorized Hitachi dealer.
When the engine emissions system malfunction
indicator is combined with the warning indicator, engine
performance is reduced by the ECU because the engine
emissions are outside of normal operating range or engine
emissions system malfunction. Follow DTC procedure or
see an authorized Hitachi dealer.
2-2-4
112321
PN=127
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