Scania DI14 82, DI14 69 Operator's Manual
IMPORTANT INFORMATION
When working on the engine. e.g. adjusting drive belts, changing oil or adjusting the clutch,
!
it is important not to start the engine. There is a risk of damaging the engine but, more
importantly, there is a
SERIOUS DANGER OF INJURY
For this reason, always secure the starter device or detach a battery lead before working
on the engine.
This is especially important if the engine has a remote starter or automatic start.
This warning symbol and text is reproduced beside those maintenance points where it is
especially important to consider t he risk of injury.
START-UP REPORT- WARRANTY
When the start-up report has been fi lled i n and sent to Scania, you have a 1 yea r warran ty from the d ate of star tup. Also fill in the information below as this can make things easier if you need to contact a service workshop
or the like.
Engine number
Start-up date
User’s name and address
Engine type
Variant
Engine type and variant are indicated on the engine type plate
Operator’s Manual
DI14 69 (750 hp)
DI14 82 (800 hp)
Marine engine
opm96-750 en 1 588 538
2001-05:1
Industrial & Marine Engines
FOREWORD
This instruction manual describes the operation and maintenance of Scania
marine engine DI14 69 (750 hp) and DI14 82 (800 hp). The instr uctions apply
to this engine type in program 96 with effect fr om e ngi ne n umber 5 564 900.
The engines are direct- injection, l iquid-coole d, four-stroke, V8 di esel engines
with 2 turbochargers. This engine has 2 charge air coolers connected to the
internal cooling system and a charge air cooler cooled by seawater, see also
page 10.
The engines feature an internal cooling system with a heat exchanger cooled
by seawater.
The engine type has el ectronic control of the injection system’s governor to
optimize engine performance and such important operating factors as fuel
consumption and exhaust emissions. Called DEC2 (Digital Electronic Control), the electronic control system is described in greater detail on page 12.
A common application is as the propulsion unit in larger leisure boats.
The normal output setting of the engine (performance code) is indicated on
the type plate, see page 10.
Note Only stand ard compon ents are described in the instruction
manual. For special equipment we would refer you to the appropriate manufacturer’s instructions.
In order to obtain the best value and service life from your engine, there are
several points to bear in mind:
- Read through the Instruction Manual before starting to use your engine.
Even those experienced with Scania engines may find new information
in this manual.
- Follow the mainten ance i nstruct ions. Ma intenance carrie d out accordin g
to these inst ructions fo rms the basis of reliable operation and a long
service life.
- Pay special attention to the safety information beginning on page 6.
- Get to know your engine so that you know what it can do and how it
works.
- When necessary, always turn to an authorised Scania workshop. These
have special tools, genuine parts and staff with training and practical
experience of Scania engines.
Note Always use genuine Scania parts i n servi ce and re pair to keep t he
engine operating correctly.
The particulars in this manual were ap plicable at th e time it was printed. We
reserve the right to introduce changes without prior notice.
During the warranty period,
only use genuine Scania parts in
service and repair for the
warranty to be valid.
Scania CV AB
Industrial and Marine engines
S-151 87 Södertälje
2 © Scania Industrial & Marine Engines 2001-05:1
LIST OF CONTENTS
FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . 2
LIST OF CONTENTS . . . . . . . . . . . . . . . . . 3
ENVIRONMENTAL RESPONSIBILITY . . . . . .4
CERTIFIED ENGINES . . . . . . . . . . . . . . . . . . . .5
SAFETY DETAILS . . . . . . . . . . . . . . . . . . . . . . .6
Safety precautions for operation . . . . . . . . . . . . 7
Safety precautions for handling ma terials . . . . .8
Safety pre cautions for care and maintenance . .8
TYPE DESIGNATIONS . . . . . . . . . . . . . . . 10
DEC2 CONTROL SYSTEM . . . . . . . . . . . . 12
STARTING AND RUNNING . . . . . . . . . . . 18
AT FIRST START . . . . . . . . . . . . . . . . . . . . . . .18
CHECKS BEFORE RUNNING . . . . . . . . . . . . .19
STARTING THE ENGINE . . . . . . . . . . . . . . . .19
At temperatures below 0 °C: . . . . . . . . . . . . . .20
RUNNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Engine speed . . . . . . . . . . . . . . . . . . . . . . . . . .21
Coolant temperature . . . . . . . . . . . . . . . . . . . .21
Oil pressure . . . . . . . . . . . . . . . . . . . . . . . . . . .22
STOPPING THE ENGINE . . . . . . . . . . . . . . . . .22
CHECKS AFTER RUNNING . . . . . . . . . . . . . .23
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . 24
ENGINES WITH FEW HOURS OF
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . .24
MAINTENANCE SCHEDULE . . . . . . . . . . . . .25
LUBRICATION OIL SYSTEM . . . . . . . . . 26
OIL GRADE . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Oil analysis . . . . . . . . . . . . . . . . . . . . . . . . . . .26
CHECKING OIL LEVEL . . . . . . . . . . . . . . . . . .27
OIL CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . .27
Maximum oil sump angles of inclination
when in operation . . . . . . . . . . . . . . . . . . . . . .27
CLEANING THE OIL CLEANER . . . . . . . . . .28
CHANGING THE TURBO FILTER . . . . . . . . .30
COOLING SYSTEM . . . . . . . . . . . . . . . . . . 30
CHECKING COOLANT LEVEL . . . . . . . . . . .30
CHECKING CORROSION PROTECTION
RODS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
CHECKING SEAWATER PUMP IMPELLER .31
CHECKING COOLANT . . . . . . . . . . . . . . . . . .32
Checking glycol content . . . . . . . . . . . . . . . . .32
Checking Protection against corrosion . . . . . .34
Changing the coolant . . . . . . . . . . . . . . . . . . .34
CLEANING THE COOLING SYSTEM . . . . . .35
External cleaning . . . . . . . . . . . . . . . . . . . . . .35
Internal cleaning . . . . . . . . . . . . . . . . . . . . . . .38
Preventive replacement of coolant pump gear 38
AIR CLEANER . . . . . . . . . . . . . . . . . . . . . . . 39
TEST READING
LOW PRESSURE INDICATOR . . . . . . . . . . . .39
CLEANING OR CHANGING THE
FILTER INSERT . . . . . . . . . . . . . . . . . . . . . . . .39
FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 41
CHECKING THE FUEL LEVEL . . . . . . . . . . . .41
CHANGING THE FUEL FILTER . . . . . . . . . . .41
CHECKING INJECTORS . . . . . . . . . . . . . . . . .42
ELECTRICAL SYSTEM . . . . . . . . . . . . . . . 43
CHECKING THE ELECTROLYTE LEVEL IN
BATTERIES . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
CHECKING THE CHARGE STATE
OF THE BATTERIES . . . . . . . . . . . . . . . . . . . .43
CLEANING BATTERIES . . . . . . . . . . . . . . . . .43
CHECKING THE COOLANT LEVEL MONITOR
44
MISCELLANEOUS . . . . . . . . . . . . . . . . . . . 45
CHECK/TENSION
V-BELTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
LOOK FOR LEAKS,
REMEDY AS NECESSARY . . . . . . . . . . . . . .46
CHECKING/ADJUSTING
VALVE CLEARANCE . . . . . . . . . . . . . . . . . . .47
CHANGING (
FOR CLOSED CRANKCASE VENTILATION 48
OR CLEANING) VALVES
LONG-TERM STORAGE . . . . . . . . . . . . . . 49
Preservative fuel . . . . . . . . . . . . . . . . . . . . . . .49
Preservative oil . . . . . . . . . . . . . . . . . . . . . . . .50
Preparations for storage . . . . . . . . . . . . . . . . .50
Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Taking out of storage . . . . . . . . . . . . . . . . . . .51
TECHNICAL DATA . . . . . . . . . . . . . . . . . . 52
FUEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
ALPHABETICAL INDEX . . . . . . . . . . . . . . 55
2001-05:1 © Scania Industrial & Marine Engines 3
ENVIRONMENTAL RESPONSIBILITY
Scania has always been at the f ore front in the deve lopment and produc tion of
environmentally safe engines.
We have made great progress in reducing harmful exhaust emissions to be
able to meet the stringent emission standards that are mandatory for almost
all markets.
We have done this without compromising the high quality of Scania
industrial and marine engines in terms of performance and cost effective
operation.
To maintain these superior properties throughout the life of the engine it is
important that the operator/owner follows the instructions of this manual as
regards operation, maintenance and choice of fuel and lubricants.
To further contribute to protecting the environment in service, maintenance
and repair , ensure that harmful was te (oil, fuel, coolant, filt ers, batteries etc.)
is disposed of and destroyed according to applicable local regulations.
This operator’s manual contains highlighted text urging you to protect the
environment in different service and maintenance operat ions.
Refer to exam ple
Always use suitable containers
to avoid spillage when bleeding
systems or renewing
components.
4 © Scania Industrial & Marine Engines 2001-05:1
CERTIFIED ENGINES
An emission certified engine has been approved according to a specific
certification standard. The certified engines delivered by Scania meet the
most compelling emissi on sta nda rds i n the Europe an (EU) and no n-Europ ean
(USA) markets.
Scania guarantees that a ll engin es of a cert ified e ngine typ e that a re deli vered,
correspond to the engine approved for certification.
The engine is fitted with a certification plate, stating according to which
certification rules (standard) the engine has been approved. Refer to page 10.
The following is required for the engine to meet the emission standards after
being commissioned:
- Service and maintenance must be performed according to this
Operator’s Manual.
- Only genuine Scania parts must be used.
- Service work on the injection equipment must be performed by an
authorized Scania workshop.
- The engine must not be modified with equipment not approved by
Scania.
- Seals and setting data may only be broken/modified after approval by
Scania, Södertälje. Changes should only be made by qualified
personnel.
- Changes affecting the exhaust s ystem and intake system must be
approved by Scania.
Otherwise, follow the instructions in this manual for operation, care and
maintenance of the engine. Also observe the safety precautions described in
the following four pages.
Important! If service and maintenance are not performed as stated
above, Scania cannot guarantee that the engine corresponds
to the certifie d co nfiguration and will not assume liability for
any damage occurring.
2001-05:1 © Scania Industrial & Marine Engines 5
SAFETY DETAILS
General
This Operator’s Manual c ont ai ns safety information that must be observed i n
order to avoid persona l in jur ie s and damage to the product or property. Refer
to page 1.
The text boxes to th e right on the pages provide informati on tha t i s i m por tant
for the proper operation of the engine and to avoid damage to the engine.
Failure to follow these i nstructions may void the w arranty.
Refer to example.
Corresponding texts may also appe ar in the text co lumn, hea ded Caution! or
Important
The warning text in text boxes to the right on the pages provided with a
warning triangle and headed WARNING is extremely important and warns
of serious defects to the engine or improper handling that may lead to
personal injury.
Refer to example
The safety precautions that must b e observed in the operati on and
maintenance of Scania engines are compiled on the following three pages.
The corresponding text is also often stated next to the maintenance step
concerned, shown with different degrees of significance as described above.
Only use Scania genuine fuel
filter.
Immobilise the starting device
when working on the engine.
If the engine starts out of
control, there is a
SERIOUS RISK
OF INJURY.
All items are marked with a
item in the section.
! to highlight the importance of reading each
A general safety rule is that no smoking is allowed:
• Near the engine and the engine bay
• When refuelling and near the filling station
• When work is performed on the fuel system
• Near flammable or explosive materials (fuel, oils, batteries, chemicals
etc.)
6 © Scania Industrial & Marine Engines 2001-05:1
Safety precautions for operation
Daily inspection
Always perform visual inspect ion of the engin e
and engine bay before the engine is started and
when the engine has been stopped after operation.
This will make it easy to detect any leakage of
fuel, oil or coolant o r any other abnormal con dition that may require remedial action.
Refuelling
When refuelling, there is a risk o f fire and explosion. The engine must be stopped and smoking
is not allowed.
Do not overfill the tank, since the fuel may expand, and close the fuel filler cap properly.
Only use fuel recommended in the service
literature. Fuel of an incorrect grade may cause
malfunctions or stoppage by i nterfering with the
operation of the fuel injection pump and the injectors.
This could cause engine damage an d poss ibly
personal injury.
Starter lock
If the control panel is not fitted with a key
switch, the engine bay should be fit ted with a
lock to prevent unauthorized starting of the engine.
Alternatively, a lockable main switch or battery
master switch may be used.
Starting spray
Never use starting spray or si milar as a starting
aid. An explosion may occu r in the i ntake pipe,
which could cause personal injury.
Operation
The engine should not be operated in environments with surrounding explosive materials
since electrical or mechanical components of
the engine may emit sparks.
It is always a safety hazard to be near an engine that is running. Body parts o r clothing, or a
dropped tool may get stuck in rotating parts,
such as the fan, causing bodily injury.
Harmful gases
Only start the engine in a properly venti lated area. The exhaust emissions contain carbon
monoxide and nitrogen oxides that are toxic.
When operating the engine in an enclosed area, an effective extraction device for exhaust
gases and crankcase gases must be used.
Always cover rotating parts and hot surfaces as
much as possible to ensure personal safety.
2001-05:1 © Scania Industrial & Marine Engines 7
Safety precautions for handling
materials
Safety precautions for care and
maintenance
Fuel and lubrication oil
All fuels and lubricants as well as ma ny chemicals are flammable. Always follow the instruc tions stated on the container.
All work on the fuel system must be performed
when the engine is cold. Fuel leakage and spill age on hot surfaces may cause fire.
Store drenched rags and other flammable materials in a safe way to avoid spontaneous combustion.
Batteries
Batteries, particularly when being recharged,
emit highly flammable fumes that c an explode.
Do not smoke or let open f lame or sparks come
near the batteries or the battery compartment.
Incorrect connection of a batte ry cable or jump
start cable may cause a spark, which in tun may
cause the battery to explode.
Stop the engine
Always stop the engine before any maintenance and service work unless otherwise
stated.
Prevent unauthorized starting by removi ng the
starter key and turning off the power by the
main switch or the battery disconnect switch,
locking it in the of f p ositi on. Al so atta ch a warning tag, stating that work on the engine is in
progress, at a suitable locati on.
It is always a safety hazard to work on an engine that is running. Parts of your body or clothing, or a dropped tool may get stuck in rotating
parts, causing bodily injury.
Hot surfaces and fluids
A hot engine always presents a risk of scaldin g.
Always take care not to touch the exhaust
manifold, turbocharger , oil pan, hot coolant and
oil in pipes and hoses.
Chemicals
Most chemicals, such as glycol, corrosion inhibitors, preservation oil s, degreasers etc. are
hazardous. Always follow the safety precautions stated on the container.
Some chemicals, e.g. preservative oil, are
flammable.
Always store chemicals and other hazardous
materials in approved and distinctly marked
containers and out of reach of unauthorized
persons. Always dispose of superfluous or
used chemicals through an authorized waste
disposal contractor.
Lifting the engine
Use the engine lifting eyes when lifting the
engine. First check that the li fting equipment i s
in proper condition and has suff icient l ift capacity rating.
Auxiliary equipment fitted to the engine may
cause the centre of gravity to be displaced.
Thus, additional lift devices may be r equired in
order to provide proper balance and a safe lift.
Never work below a suspended engine!
Batteries
Batteries contain a highly corrosive elec trolyte
(sulphuric acid). Always take care to protect
your eyes, skin and clothing when charging and
handling batteries. W ear pr otective g loves and
goggles.
If electrolyte splashes on the skin, wash the
affected part of the body with soap and plenty
of water. If electrolyte splashes into the eyes,
rinse eyes immediately with pl enty of water and
seek medical attention.
Dispose of used batteries through an authorized waste disposal contractor.
8 © Scania Industrial & Marine Engines 2001-05:1
Electrical system
Cooling system
Before work is performed on the electrical system, turn off the power by the main switch or the
battery disconnect switch.
Also disconnect any external power supply to
auxiliary equipment on the engine.
Arc Welding
Before welding near or on the engine, remove
the battery and alternator cables. Als o remove
the control unit connector.
Connect the weld clamp to the component to be
welded, close to the weld location. Never connect it to the engine or in such a way that the
current can pass through a bearing.
After the welding is completed, connect the cables to the alternator and t he control unit before
connecting the batteries.
Lubrication system
Hot oil may cause scalding and skin irritation.
Avoid skin contact with hot oil.
Never open the coolant filler cap while the engine is hot. Steam and hot coolant can come
out forcefully and cause scalding.
If the cooling system must still opened or disassembled while the engine is hot , ope n the fi ller
cap very cautiously and slowly to release the
pressure before the cap is removed. Use
gloves since the coolant is still very hot.
Dispose of used coolant through an authorized
waste disposal contractor.
Fuel system
Always use gloves when checking for leaks in
or performing other wor k on the fuel syst em. Always wear eye protection when testing injectors.
Fuel escaping under high pressure can penetrate body tissue and cause serious injury.
Never use non-genuine parts in the fuel system
and the electrical system. Genuine part s are
designed and manufactured to minimize fire
and explosion hazard.
Make sure that the pressure in the lubrication
system is relieved before work is carrie d out.
Never start or operate the engine with the oil fil ler cap removed since oil will be ejected forcefully.
Dispose of used oil through an authorized
waste disposal contractor.
Before starting
Install any guards that have been removed before the engine is started. Check to ensure that
no tools or other objects have been left on the
engine.
Never start the engine unless the air filter is installed. Otherwise there is a risk of objects entering the compressor wheel or a risk of
personal injury from contact with it.
2001-05:1 © Scania Industrial & Marine Engines 9
TYPE DESIGNATIONS
The engine designatio n indicates, in the form of a code, t he type of engi ne, its
size and intended use, etc.
The type designation and engine serial number are indicated on a type plate
affixed to the right- hand side of the en gine. The serial number is also punc hed
in the engine block, adj acent to the first cylinder head. Refer to the
illustration.
Engines that are cert ifie d r egardi ng smoke a nd emissi ons ar e fit ted wit h a cer tification plate specifying the documents they conform to. The plate is fitted
to rocker cover number four from the front on the right hand side.
DI 14 69 M 48 E
Type
DI Supercharged diesel engine with liquid-cooled charge air cooler
Swept volume in whole dm
3
Performance and certification code
Indicates, together with the application code, the normal gross engine
output.
The actual output setting of the engine is indicated on the engine card.
Application
M For marine use
Variant 01-99
Type of governor
E Electronically controlled governor (DEC2)
10 © Scania Industr ial & Marine Engines 2001-05:1
31612192322
51022
25
26
2
16
22 8
10
26
25
11
20
10
21
22
713
9
25
4
9
15
The illustrations show a typical DI14 69 engine configuration.
Your engine may have different equipment from the one shown.
1. Type plate
2. Engine serial number,
punched in engine block
3. Oil cooler
4. Oil dipstick
5. Oil cleaner
6. Oil filter, turbo
7. Drain plug, engine oil
8. Coolant pump
9. Charge air cooler (engine
coolant-cooled)
9
24
14
10. Turbocharger
11. Injection pump
12. Fuel filter
13. Starter motor
14. Alternator
15. Fan belt, adjuster
16. Coolant pipes to turbo
17. Inspection holes, engine
block
18. Drain cock, coolant
19. Oil filler cap
17
18
20. Seawater pump
21. Heat exchanger
22. Sacrificial anodes
23. Expansion tank with pres-
sure cap
24. Oil pressure monitor
25. Charge air cooler (seawa-
ter-cooled)
26. Seawater pipe to charge air
cooler
2001-05:1 © Scania Industrial & Marine Engines 11
DEC2 CONTROL SYSTEM
This engine has an injection pump with an electromagnetic actuator which
adjusts the control rack to give the correct amount of fuel.
The system which controls the pump is called DEC2 (Digital Engine Control,
generation 2).
The control unit (DEC2) continuously receives signals from sensors for
engine speed, charge air temperature and pressure, coolant temperature, oil
pressure, throttl e positi on and cont rol rac k travel in the injecti on pump. Usin g
this input data and a control program, the correct amount of fuel for the
current operating conditions can be calculated.
The system’s sensors may be used only for DEC2, not for other instruments
or other monitoring purposes.
The control unit contains monitoring functions to protect the engine in the
event of a fault which would otherwise damage it. Faults and the more
important monitoring functions are indicated on the control unit in the form
of light emitting diodes. See illustration on page 14 for a description.
In case of a fault, the Power - or Shutdown indicator on the DEC2 control
unit as well as the main indicator lamp on the main supply box and the
instrument panel will illuminate.
If a fault has been indicated on the main indicator lamp the operator can
determine the cause of th e fault with the help of the LEDs on the control unit
and the troubleshooting schedule on page 17, and carry out the required
investigation and remedy.
Depending on the nature of the fault, the control system will take different
actions to protect the engine such as reducing the power output, keeping the
engine running at a constant low speed or, in case of a function impairing
fault, shutting down the engine (Shutdown).
To enable readout of LED fault codes there is a lamp test/fault code switch
located in the main supply box near the control unit.
A PC based program is also available to help service personnel to detect and
rectify fau lts and to adjust certain parameters in th e operating p rogram.
Diagnostics and changes to programs must only be performed by
authorized personnel.
The locations of the sensors and moni tors tha t send signal s to the cont rol unit
are shown in the illustrations on pages 13.
There is a description of the functions of the LEDs during normal operation
on page 14.
On page 15 there is a description of the functions of the LEDs in case of a
fault and actions in case of Power- and Shutdown indication.
Troubleshooting and fault code reading are described on pages 16 and 17.
12 © Scania Industr ial & Marine Engines 2001-05:1
Location of sensors for DEC2
2
1
5
6
3
4
1. Connection of lead to charge air
temperature sensor
2. Charge air temperature sensor
3. Coolant temperature sensor
4. Engine speed sensors
5. Oil pressure monitor
6. Connector panel
2001-05:1 © Scania Industrial & Marine Engines 13
LED functions during normal operation
Note: The lamp test/fault code switch should no t be
depressed. All LEDs come on briefly when
the control unit is powered up.
CONTROL STATUS
✹ The LED flashes continuousl y when the cont rol
unit is supplied with current, regardless of
whether the engine is running or not.
SHUTDOWN
❍ The LED is out.
STARTING
✹ The LED lights up as soon as the engine turns
over on cranking and follows the programmed
starting sequence until it has been completed
and then goes out.
RUNNING
✹ The LED comes on when the engine has started
and the "Starting" LED goes out. It remains on
until the engine is stopped.
POWER-
❍ The LED remains out during normal operation
as long as no fault is detected by the control
unit. See next page for the procedure to be
adopted in the event of a fault.
POWER+
✹ If the control unit is programmed to allow the
engine to be operated according to more than
one power/torque curve (map), the following
applies.
The LED comes on when the engine is run at
more than 100% power output ( MAP 2). It goes
out when the engine returns to the 100% power
output curve (MAP 1) or when the power output
required is less than 100%.
TORQUE LIMIT
✹ The LED comes on when the control unit
detects th at the engine h as received the
maximum permissible quantity of injected fu el
according to its power curve. This means 100%
power output at the curr ent rpm. If the load
increases, engine rpm will decrease.
BOOST LIMIT
✹ The LED comes on when the control unit smoke
limiter restricts the maxi mum f uel quantity.
Operation of the smoke limiter is dependent on
the charge air pressure.
14 © Scania Industrial & Marine Engines 2001-05:1
Action in case of a fault
LED indications in case of a fault
Note The main indicator lamp in the main supply
box and at the instrument panel has
indicated a fault. The lamp test/fault code
switch should not be depressed.
CONTROL STATUS
✹ The LED will continue to flash even in case of a
fault as long as volt age is suppli ed to t he con trol
unit.
POWER -
✹ If the LED comes on, the control unit has
detected a defect that c ould cau se da mage to th e
engine if operation continues.
The control unit automatically reduces engine
power output to a predefined level if the
corresponding function has been selected.
Action: Reduce engine speed to idle if possible
and conduct troubleshooting according to
instructions on page 16 and the chart on page 17
SHUTDOWN
✹ The LED comes on and the engine is switched
off automatically in case of a severe fault that
could cause damage to the engine if operation
continues.
Action: Conduct troubleshooting according to
instructions on page 16 and the chart on page 17
If the engine has not stopped, reduce engine
speed to idle and conduct troubleshooting.
2001-05:1 © Scania Industrial & Marine Engines 15
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 thr eshold value s. 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 indicat or lamp in the
main supply box and the instrument panel
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.
. Make
- The control unit then r esumes 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 tr ouble shoot ing sched ule on the next
page.
- When the fault or faults have been rectified the
engine can be restarted.
- If the cont rol 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 specia l memory in
the control unit al ong 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
16 © Scania Industrial & Marine Engines 2001-05:1
READOUT OF FAULT CODES
Send in the control unit for repair as soon as
possible.
Check the cooling system. Check the temperature
sensor a nd cable routing.
Check the wiring and connector.
Renew the engine speed sensor.
Check the intake system. Check the temperature
sensor a nd cable routing.
Check the charge air pressure hose. Send in the
control unit for repair if the connection is damaged.
Check the cable routing, connectors and cables.
Check oil level, connector and cable.
Renew the oil pressure monitor.
Probable cause Action
DEC2 has detected an internal fault in the control unit.
The engine temperature has reached the threshold level
or the temperature sensor is inoperative.
The engine has reached the overrevving limit or the
engine speed sensor is inoperative.
Control rack position sensor inoperative. Check connectors and cables to governor.
The intake air temperature has reached the threshold
level or the charge air temperature sensor is inoperative.
DEC2 detects no charge air pressure.
The charge air pressure sensor is inoperative.
Engine speed potentiometer or the idling safety switch
is inoperative.
The oil pressure has dropped to the threshold level or
the oil pressure m onitor is inoperative.
POWER +
✹
LED INDICATION WHEN THE LAMP TEST/FAULT CODE SWITCH IS ACTIVATED
2001-05:1
POWER -
BOOST LIMIT
TORQUE LIMIT
RUNNING
✹
STARTING
✹
SHUTDOWN
✹
CONTROL STATUS
✹
© Scania Industrial & Marine Engines
✹
✹
✹
✹=LED on
17
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