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© Scania Industrial & Marine Engines
Changing functions using the DIP
switches in the control unit
There are 8 DIP switches in the control unit under the
round black rubber cover.
These switches shall be in the ON position to obtain
normal functions according to the operating program.
However, for single-speed engines, the normal
position of DIP switches 6, 7, and 8 may also be OFF
Shutdown at threshold values for low oil pressure and
high coolant temperature can be selected by setting
DIP switch 4 to OFF
With DIP switch 4 in position ON, Power- indication
is obtained for these threshold values. Engine output
reduction (LOP) can be selected to prevent damage to
the engine. Changes to the program must only be
performed by authorized personnel.
Note
Do not operate the engine with a Power-
indication except for in emergencies.
Readout of fault codes
Note
If the engine has stopped or lost power but
the main indicator lamp is out and neither
POWER- nor SHUTDOWN are on, the
fault is outside the control unit detection
range. Probable causes: fuel shortage,
temporary overload, mechanical fault.
- Activate the lamp test/fault code switch. In
Scania electrical equipment the main indicator
lamp is located in this switch on the main supply
box.
- All LEDs will then come on for 2 seconds to
indicate that they are intact and in working order.
This also applies to the main indicator lamp in the
main supply box and the instrument panel
.
Make
a note of any LED that is defective.
- All LEDs will then be out for approximately 4
seconds.
- Following this, a fault code will be indicated on
one of the LEDs for 2 seconds. Note which LED
it is.
- The control unit then resumes the operating mode
automatically.
- After having made a note of the fault code, reset
the lamp test/fault code switch and reset the
control unit by turning off its power supply
momentarily.
- The most probable cause of the fault can then be
found in the trouble shooting schedule on the next
page.
- When the fault or faults have been rectified the
engine can be restarted.
- If the control system continues to indicate a fault
by way of the main indicator lamp, further faults
may have been recorded. The fault code readout
must then be repeated as per above since the
system can only display one fault code at a time.
- The fault(s) will be stored in a special memory in
the control unit along with information about the
operating time when it(they) occurred. Stored
faults can be accessed and erased by authorised
service personnel.
The DIP switches are showed in ON position
