16 KENR9126
Troubleshooting Section
Operation of the Indi cator Lamps
Table 4
Diagnostic
Lamp
(Alert
Lamp)
Warning
Lamp
(Action
Lamp)
Lamp State Description of the Indication Engine State
On On
Lamp Check When the keyswitch is switched on, the lamps
illuminate for 2 seconds and the lamps will then
be extinguished.
The keyswitch is on but the
engine has not yet been
cranked.
Off Off
No Faults With the engine in operation, there are no active
warnings, diagnostic codes, or event codes.
The engine is operating with
no detected faults.
Flashing Off
Active
Diagnostic
If the diagnostic lamp illuminates during engine
operation, this indicates that an active diagnostic
code (an electrical fault) is present.
The engine is operating
normally but there is one or
more faults with the electronic
management system for the
engine.
Flashing
On
Warning
(Warning
only)
If the warning lamp illuminates during engine
operation, this indicates that an active diagnostic
code (a system fault) is present.
The engine is operating
normally but there is one
or more of the monitored
engine parameters that are
outsideoftherangethatis
acceptable.
Flashing Flashing
Derate
(Warning
and Derate)
If both the warning lamp and diagnostic lamps
flash during operation of the engine, the lamps
indicate that one or more of the values for the
engine protection strategy have been exceeded
beyond the level that will cause an engine derate.
Theengineisoperating.
However , one or more of the
monitored engine parameters
is outside of the acceptable
range. The acceptable range
has been exceeded to a level
which requires a warning and
an engine derate.
Flash Codes
The “Flash Code” feature is used to flash the code
of all active diagnostic codes and logged diagnostic
codes.
The sequence for the flash code is started by moving
the keyswitch to “Off” and then moving the keyswitch
to “On” twice within a period of 3 seconds. After a
delay of 2 seconds, the “Warning” lamp will flash
once for half a second. This sequence indicates the
start of the active fault codes. After a further delay of
2 seconds, the “Diagnostic” lamp will flash repeatedly
in order to indicate the active diagnostic codes. Each
flash will be on for half a second and off for 300
milliseconds. The “Diagnostic” lamp will remain off for
2 seconds between each digit of a code. If there is
more than one active diagnostic code, the “Warning”
lamp will go off for 2 seconds. The lamp will then
illuminate for half a second. The “Diagnostic” lamp
will be extinguished for 2 seconds before starting the
next code. If there are no active diagnostic codes,
the“Diagnostic”lampwillflash the code “551”. Refer
to Troubleshooting Guide, “No Diagnostic Code
Detected”.
As an example, an active diagnostic code of “212” is
indicated by the “Diagnostic” lamp coming on for 500
ms, then off for 300 ms, then on for 500 ms, then off
for 2000 ms, then on for 500 ms, then off for 2000
ms, then on for 500 ms, then off for 300 ms, then on
for 500 ms and then off.
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