TROUBLESHOOTING
11-1
ENGINE TROUBLESHOOTING
Engine troubleshooting switch (2) is located inside left con-
sole side cover (1) in the cab. If any trouble occurs in the
engine and/or the engine related parts, and either engine
warning indicator (4) or engine stop indicator (3) illuminates
or flashes continuously, the fault codes (indicating an en-
gine problem by flashing the engine warning indicator) can
be displayed by operating engine troubleshooting switch
(2).
Turn engine troubleshooting switch (2) ON so that the en-
gine controller makes the engine stop indicator or the en-
gine warning indicator flash in the specified pattern (fault
code) depending on the trouble encountered.
Trouble Status Fault Code Display Indicator
(Flashing Pattern)
Abnormal Throttle Sensor Engine Warning Indicator
*(2-5)
Abnormal Boost Pressure Engine Warning Indicator
(2-3)
Abnormal Engine Speed
Sensor
Engine Stop Indicator (2-1)
Abnormal Actuator Power
Source
Engine Stop Indicator (4-1)
Abnormal Actuator Sensor Engine Stop Indicator (4-5)
Abnormal Sensor Power
Source
Engine Warning Indicator
(4-3)
NOTE: Flashing pattern (fault code) * (2-5) means that
the engine warning indicator flashes twice,
pauses for a short time, and flashes 5 more
times.
IMPORTANT: When the engine warning indicator or
the engine stop indicator illuminates,
immediately contact your nearest Hitachi
dealer for inspection.
NOTE: Depending on electrical signals arriving from the
sensors described below, the engine controller
drives the engine governor so that the fuel injec-
tion volume is regulated by the governor to meet
the operating conditions.
M146-07-048
M18C-01-029
M146-01-039
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