Doosan D20S-5 Operation & Maintenance Manual page 106

Operation Section
Advanced Diagnostics
MI-07 systems are equipped with built-in fault
diagnostics. Detected
displayed by the Malfunction Indicator Lamp (MIL)
as Diagnostic Fault Codes (DFC) or flash codes,
and viewed in detail with the use of the Service Tool
software. When the ignition key is turned on, the MIL
will illuminate and remain on until the engine is
started. Once the engine is started, the MIL lamp will
go out unless one or more fault conditions are
present. If a detected fault condition exists, the fault
or faults will be stored in the memory of the small
engine control module (SECM). Once an active fault
occurs the MIL will illuminate and remain ON. This
signals the operator that a fault has been detected
by the SECM.
Reading Diagnostic Fault Codes
All MI-07 fault codes are three-digit codes. When the
fault codes are retrieved (displayed) the MIL will
flash for each digit with a short pause (0.5 seconds)
between digits and a long pause (1.2 seconds)
between fault codes. A code 12 is displayed at the
end of the code list.
EXAMPLE: A code 461 (ETCSticking) has been
detected and the engine has shut down and the MIL
has remained ON. When the codes are displayed
the MIL will flash four times (4), pause, then flash six
times (6), pause, then flash one time (1) This
identifies a four sixty one (461), which is the
ETCSticking fault. If any additional faults were
stored, the SECM would again have a long pause,
then display the next fault by flashing each digit.
Since no other faults were stored there will be a long
pause then one flash (1), pause, then two flashes
(2). This identifies a twelve, signifying the end of the
fault list. This list will then repeat.
(1) Malfunction Indicator Lamp(MIL) for Engine control system.
system faults can
1
Displaying Fault Codes (DFC) from
SECM Memory
be
To enter code display mode you must turn OFF the
ignition key. Now turn ON the key but do not start
the engine. As soon as you turn the key to the ON
position you must cycle the foot pedal by depressing
it to the floor and then fully releasing the pedal
(pedal maneuver). You must fully cycle the foot
pedal three (3) times within five (5) seconds to
enable the display codes feature of the SECM.
Simply turn the key OFF to exit display mode. The
code list will continue to repeat until the key is
turned OFF.
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