SRT55D Off-Highway Truck
3-20
Safety, Operation and Maintenance Manual
Controls and Operating
senses the changing engine condition.
A special diagnostic data reader (INSITE) is
available that can be plugged into the engine
computer memory to extract information
related to the cause of the problem. Once
the malfunction has been corrected, the
Electronic Fuel System will return the engine
to normal operation. The data reader can now
distinguish between active codes and those
stored in the historic code memory (inactive
codes). Inactive codes can only be viewed
using the data reader. The fault code recorded
in the ECM memory will remain until it is
erased by a technician.
The operator can check for active faults by
turning the ignition key switch to the 'OFF'
position, switching the diagnostic switch
'ON' and then turning the ignition key switch
to position '1'. If no active fault codes are
recorded, all three ('Stop', 'Warning' &
Maintenance) lights will come on and stay
on. If active codes are recorded, all three
lights will come on momentarily. The yellow
('Warning') and red ('Stop') lights will begin to
ash the code of the recorded fault. The fault
codes flash in the following sequence: the
yellow light ashes once, then there is a pause
where both lights are off. Then the numbers
of the recorded fault code ash in red. There
is a pause between each number. When the
number is done, the yellow light ashes again.
e.g. yellow ashes once - pause - red ashes
twice - pause - red flashes three times -
pause - red ashes ve times - pause - yellow
flashes once, indicates fault code 235. The
number will repeat in the same sequence until
the system is advanced to the next active fault
code or the diagnostic switch is switched to
the 'OFF' position.
Refer to 'Electronic Fuel System Diagnostic
Codes' table for fault code descriptions.
3.11.5 Electronic fuel system diagnostic
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