Komatsu D85EX-18 Operation & Maintenance Manual page 78

EXPLANATION OF COMPONENTS OPERATION
REMARK
For more information about the Inducement strategy, and Inducement status concerning engine power deration,
see "HANDLE UREA SCR SYSTEM (3-113)".
DEF SYSTEM CAUTION LAMP
DEF system caution lamp alerts when abnormality in the sys-
tem are detected.
Whenever the caution lamp lights up in yellow or in red, take
necessary actions by instructions.
Fault conditions that result in activation of the Inducement strat-
egy for engine derates to prompt to maintain or repair the emis-
sion control system.
Lighting in red
With Action level "L04", Inducement status is "Severe Induce-
ment". Engine power is under heavy deration.
With Action level "L03", Inducement status is "Low level Inducement". Engine power is under deration.
Lighting in yellow
With Action level "L01", Inducement status is " Warning" or "Continuous Warning".
When "Continuous Warning", If no maintenance, advancing to the next Inducement status. Engine power will be
derated.
REMARK
For more information about the Inducement strategy, and Inducement status concerning engine power deration,
see "HANDLE UREA SCR SYSTEM (3-113)".
DEF SYSTEM HIGH TEMPERATURE STOP CAUTION LAMP
DEF system high temperature stop caution lamp alerts when
the times of engine is shut down under the condition of high de-
gree temperature of DEF system exceeds the defined number
of times.
Whenever the caution lamp lights up in yellow, it is necessary
to ask your Komatsu distributor to go off this caution lamp.
When stopping the engine, stop it after running it at low idle for
approximately 5 minutes. For details, see "METHOD FOR
STOPPING ENGINE (3-166)".
When stopping the engine during aftertreatment devices regen-
eration, stop the regeneration first according to "PROCEDURE
FOR AFTERTREATMENT DEVICES REGENERATION DISABLE SETTING (3-109)", then stop the engine after
running it at low idle for approximately 5 minutes.
PARKING BRAKE SYSTEM CAUTION LAMP
The parking brake system caution lamp warns about abnormal-
ity in the parking brake system.
When action level "L04" is displayed
The caution lamp lights up in red and the alarm buzzer sounds
continuously.
Stop the machine immediately and ask your Komatsu distribu-
tor for inspection and maintenance.
When action level "L03" is displayed
The caution lamp lights up in red and the alarm buzzer sounds
intermittently.
3-24