The base system comprises of the main supply box (MSB), the
junction box for the coordinator (CBC) and the coordinator (COO).
The main supply box is connected directly to the S6 control unit.
For this base system there are several different options for connection
to the system:
- Scania EMS digital display together with a control panel with
ignition key.
- A remote control box which enables controlling the engine from the
engine room.
- An analogue instrument panel instead of the digital display or
together with it.
- A Scania APS sensor (accelerator pedal sensor).
- In addition, the system can be doubled if there are two control
pulpits.
The whole system for instrumentation is Plug and Play which makes it
very simple to install.
See illustration of dual system on the next page.
In this Operator's manual, only the analogue instrument panel 9,
Scania EMS display10 and Control Panel,8 and 9, are described.
The analogue instrument panel has instruments for reading rotation
speed with hour counter, coolant temperature and oil pressure as well
as switches and lamps for diagnosis and alarm.
The analogue instrument panel has the following functions:
Also see illustration on next page.
Lamp intensity (S54)
The intensity of the gauges can be regulated with this roller control.
Buzzer off (S51)
This button deactivates the buzzer sound on any existing alarm. The
warning lamp for the current alarm trigger will continue to illuminate
until the fault is rectified.
Lamp test (S52)
With this button it is possible to check that the system lamps are intact
and functioning. When the button is activated the coordinator will
activate all lamps on the panel and the buzzer will sound. The lamps
illuminate and the buzzer sounds as long as the button is depressed.
When the key in the control panel is turned to the Ignition position an
automatic lamp test takes place for 2 seconds and the buzzer sounds for
1 second.
Diagnosis EMS/COO (W21 and S53)
This is a 3-position switch which belongs to diagnostic lamp W21. The
diagnostic lamp remains lit for as long as the system has an active fault
code.
When the switch is activated in the direction of the COO for at least 1
second, the coordinator will send out any fault codes as flash codes on
the diagnostic lamp (W21).
When the switch is activated in the direction of the EMS for at least 1
second, the coordinator will send out any fault codes for the EMS the
control unit as flash codes on the diagnostic lamp (W21).
In order to read flash codes with dual instrumentation it is necessary to
demand diagnosis from the instrument panel where the coordinator in
question is connected.
For further information on reading and deleting flash codes, see
Troubleshooting using flash codes.
Warning lamps (W1, W4, W5, W6, W7)
On the warning lamp panel there are warning lamps for alternator
charging, oil pressure, coolant temperature and coolant level. Warning
lamp for hydraulic pressure is not used.
S54
S51
W6
W1
O2
O1Tachometer with hour counter
O2Coolant temperature gauge
O3Oil pressure gauge
S51Deactivation of buzzer
S52Lamp test switch
S53Diagnostic switch
S54Rheostat for instrument lighting
W1Charge warning lamp
W4Warning lamp, coolant temperature
W5Warning lamp, oil pressure
W6Warning lamp, hydraulic pressure
W7Warning lamp, coolant level
W21Diagnostic lamp
Troubleshooting using flash codes for the EMS
control unit
1. Switch on the ignition. If the diagnostic lamp is on after 2 seconds
there is an active fault.
2. Activate the diagnostic switch (S53) to the left to see the flash
codes for the control unit (EMS).
3. A fault code will then flash on the diagnostic lamp (W21). This
flash code consists of long flashes (approximately 1 second long)
and short flashes (0.3 seconds long). Long flashes are equivalent
to tens and short flashes to units.
Example: long - short - short = fault code 12.
4. Repeat this procedure until the first flash code is repeated. This
means that the entire fault code memory has been flashed out. If
the fault code memory is empty, only one long flash
approximately 4 seconds long will be given.
5. See the flash code table on the next page for a description and
localisation of the fault.
6. In order to obtain further information on the fault code, the
PC-based diagnostics tool or Scania EMS Display must be used.
Contact an authorised Scania workshop.
7. The diagnostic lamp will stay on for as long as a fault is active.
Even if the lamp has gone off and the fault is no longer active, the
code can generally be read off in accordance with the instruction
above.
8. When a fault has been rectified the fault code can be erased as
described below.
Erasing fault codes (flash codes)
1. Turn the ignition off. If there is dual instrumentation the ignition
must be switched off on both panels.
2. Activate the diagnostic switch in the direction of the flash codes,
i.e. to the left for EMS.
3. Turn the ignition on at the same time as holding the diagnostic
switch activated to the left (EMS) for 3 seconds.
4. This will erase passive fault codes which can be read off via flash
code for the relevant system. The rest of the fault code will remain
in the EEPROM and can only be deleted using the PC tool.
Troubleshooting using flash codes for the EMS
coordinator
1. Switch on the ignition. If the diagnostic lamp is on after 2 seconds
there is an active fault.
Important! The diagnostic lamp only indicates faults for the
coordinator connected to the instrument panel from which the
flash codes are read.
2. Activate the diagnostic switch (S53) to the right to see the flash
codes for the coordinator (COO).
3. A fault code will then flash on the diagnostic lamp (W21). This
flash code consists of long flashes (approximately 1 second long)
and short flashes (0.3 seconds long). Long flashes are equivalent
to tens and short flashes to units.
Example: long - short - short = fault code 12.
4. Repeat this procedure until the first flash code is repeated. This
means that the entire fault code memory has been flashed out. If
the fault code memory is empty, only one long flash
approximately 4 seconds long will be given.
5. See the flash code table on the next page for a description and
localisation of the fault.
6. In order to obtain further information on the fault code, the
PC-based diagnostics tool or Scania EMS Display must be used.
Contact an authorised Scania workshop.
7. The diagnostic lamp will stay on for as long as a fault is active.
Even if the lamp has gone off and the fault is no longer active, the
code can generally be read off in accordance with the instruction
above.
Erasing fault codes (flash codes)
1. Turn the ignition off. If there is dual instrumentation the ignition
must be switched off on both panels.
2. Activate the diagnostic switch in the direction of the flash codes,
i.e. to the right for the coordinator COO.
3. Turn the ignition on at the same time as holding the diagnostic
switch activated to the right (COO), for 3 seconds.
4. Any fault code that can be read by a flash code for the system in
question will be deleted. The rest of the fault code will remain in
the EEPROM and can only be deleted using the PC tool.
Important! It is only possible to delete fault codes for the
coordinator that is connected to the instrument panel from
which deletion is carried out.
Incorrect signal from the nominal rotation speed signal fine adjustment.
Incorrect analogue signals from the accelerator pedal sensor.
Incorrect analogue signal from the resistor module for governor setting.
Incorrect analogue signal from the resistor module for idling and fixed speed
setting.
13No communication (EMS) with the engine.
14Short-circuit in the tachometer signal cable.
15Faulty atmospheric pressure sensor.
17Short-circuit in the coolant temperature gauge signal cable.
18Short-circuit in the oil pressure gauge signal cable.
19Short-circuit in the oil pressure lamp signal cable.
21
Different versions of the communications protocol between the coordinator and
EMS.
22Faulty start switch or short circuit.
23The supply voltage is too high.
24The supply voltage is too low.
25Check value from end of line (EOL) is incorrect.
26Road speed sensor signal missing or incorrect.
27The signals from the RCB (Remote Control Box) switches are implausible.
28Incorrect signals from the droop-setting switches.
29Faulty remote start switch or short circuit.
31No communication from the slave coordinator or the master coordinator.
32Short circuit in the signal cable to the coolant temperature warning lamp.
33Short circuit in the signal cable to the charge indicator lamp.
34Incorrect signal from the Fixed speed switches.
35Fault in CAN communication.
Start and stop the engine from the Scania Control Panel which has a
starter key and a stop button together with functions for Fixed Speed
and Limp Home.
S42W19
S49
S43
S46
S45
S47
W20
S1
S50
W20
12
1.Master panel
2.Slave panel
W19Lamp for Active Panel
W20Lamp for Limp Home Throttle
S1Ignition key
S42Switch for Active Panel function
S43Switch for activating and switching between Fixed Speed 1 and 2
S45Switch for storing
S46Stop button
S47Switch for adjusting Fixed Speed / idle speed up or down
S49Switch for deactivating Fixed Speed function
S50Potentiometer for Limp Home Throttle
Following functions are available in Scania Control Panel:
Active Panel
Activate the panel by depressing pushbutton S42. The coordinator
registers that this control position is active and switches on lamp W19.
The panel from which the engine is started is automatically active and
it is then possible to make adjustments and requesting throttle
actuation.
In order to change active panel (changing throttle position) both
throttle controls must be at 0% throttle. Switch off the active panel so
that neither panel is active. Then it is possible to change control
position.
With single instrumentation, the panel is activated when the key is
turned to the ignition position.
If the throttle control fails, the Active Panel lamp is still illuminated
and the Limp Home lamp comes on which means that the limp home
throttle (emergency throttle) is engaged.
If CAN communication fails, the Limp Home lamp comes on and the
Limp Home throttle is engaged.
These two functions are activated via a 3-position switch, S43. With
Fixed Speed 1 it is possible to set an isochronous speed between high
and low idle speed. With Fixed Speed 2 it is possible to set an
isochronous speed between 450 and 2000 rpm. In both modes, it is
possible to set torque limitation via diagnostic tool or the digital
display.
When activating, the engine goes up or down to the last saved value for
the mode.
It is a prerequisite for activating these modes that the engine is running,
that the panel is active and that the throttle is at 0%.
Change the speed for either modes in the following way:
- Activate the mode to be changed by activating switch S43 to 1 or 2.
- Adjust the speed up or down using switch S47.
- Press Store switch S45 for 3 seconds to save the new values. If you
exit the mode without saving, the engine will resume the latest
speed value that was stored for that mode.
- With dual instrumentation, it is only possible to make adjustments
from the panel that is active.
S43
S49
S45
S47
- In order to deactivate the function, press switch S49 to Off, touch
the accelerator pedal, change panel when using dual
instrumentation, or switch off the engine.
1. Activate Store switch S45 for 3 seconds in order to go to
adjustment mode.
2. Adjust the idle speed up or down (+ or -) using switch S47.
3. Save the set value by activating the Store switch for
3 seconds.
- It is also possible to set the engine idle speed using the diagnostic
tool or Scania digital display.
- In order to adjust the idle speed, the coolant temperature must be
higher than 50°C and the engine running at idle.
- The idle speed can be set to between 500 and 1,050 rpm.
Stop
The function stop the engine is available in several places in the
system.
S45
S47
With single instrumentation, the stop button can be located in 2 places:
- In the Remote Control Box (RCB).
- In the Control Panel (S46).
With dual instrumentation, the stop button can be located in 3 places:
- In the Remote Control Box (RCB).
- In both Control Panels (S46).
When one of these buttons is activated COO sends a message to S6 to
stop the engine.
It is also possible to stop the engine by turning the key to O. With dual
instrumentation it is possible that both Control Panels are in ignition
position and both keys must then be turned to O.
Therefore we recommend that the engine is stopped with a stop
button.
Limp Home Throttle is an emergency function that is activated if the
master coordinator fails or if the master throttle control fails while the
master control panel is active, or if the slave throttle control, slave
coordinator fail while the slave control panel is active or CAN traffic is
not working.
If this happens Limp Home lamp W20 will come on and Limp Home
Throttle will be engaged.
Limp Home Throttle, S50, consists of a potentiometer on the master
Control Panel with which it is possible to drive in limp home mode.
The potentiometer value goes directly to switch A2 on the S6 control
unit.
In order to use Limp Home Throttle the potentiometer must first be
turned to the 0 position before it is activated. The potentiometer is only
on the Master Control Panel. There is a Limp Home lamp on both
panels. If CAN fails, both lamps will come on and Limp Home Throttle
is activated.
The potentiometer is only on the master panel but Limp Home lamp
W20 is on both panels.
W20
S50
If the master control fails when the master panel is active, the lamps on
both panels will come on. If you then change to the slave panel, both
lamps will go off and it is possible to control the engine throttle via the
slave panel.
The same will also apply the other way round.
Start Key
Start the engine by using key S1 on Scania Control Panel. The key
gives U15 signal in the Ignition position and U50 signal in the Start
position.
When the coordinator receives a signal from the key to start, the
coordinator sends a CAN message to the S6 control unit, which in turn
sends a signal to the starter relay that supplies the starter motor with
power and the engine starts.
- If one panel is active, it is only possible to start from that panel.
- If no panel is active, the panel that you use to start the engine will
automatically become active.
The engine stops when the key is turned to the 0 position. In dual
systems, this only applies if the other key is not turned on.
Remote Control Box is connected on switch C57 on Main Supply Box
(MSB). With RCB it is possible to lock the engine so that it is not
possible to operate it from another position than where the RCB is
located.
Note: This can only be done when the boat is moored, i.e.
when there is no risk that the boat will drift out of
control. There is a sign on the RCB with this warning
text.
- There are two positions for key switch S26: Local and Remote.
- Local: The engine cannot be operated from any other location
than from the RCB box.
- Remote: Normal position, the engine can be operated from the
other throttle control positions.
- When the Local position is activated the green lamp 2 is
illuminated. At the same time the Active Panel lamps on the Scania Control Panel (Slave and Master) starts to flash, which indicates
that neither of these panels can be activated.
- When the engine is started from the RCB using S27 it only runs on
idle as long as the Local position is activated and no other throttle
control can be used.
- If the key switch is reset from Local to Remote when the engine is
running, the green lamp 2 will go out and the engine will continue to
run on idle, but it will then be possible to operate throttle control
from other control positions if the Slave or Master panel is active.
- If key switch S26 is reset from Remote to Local while driving,
nothing will happen, except that this will be regarded as an
unintentional action.
- If CAN communication fails when the engine has been started from
the RCB the engine will stop but the Limp Home function will not
be engaged.
Scania EMS Display is a graphic display which represents engine data,
diagnostics which enables settings of certain parameters in the engine
control unit EMS. Scania EMS Display can only be used together with
EMS and the new electrical system adapted for marine use.
Communication to and from the display is carried out via CAN bus,
protocol J1939.
Function
The information content can be found in different screens according to
a tree structure. On the upper level there are six different screens, three
Favourites, Information, Diagnostics and Settings.
The buttons are configured to function differently depending on which
screen is currently active. To scroll between different screens on the
upper level, use button 1 and 5 depending on whether you want to
move forwards or backwards in the structure.
When one of the favourite screens is active, the information about each
button's function is hidden. The reason for this is to make as big an area
as possible available for presentation. As soon as a button is depressed,
the description for the button is displayed for approx 5 s.
Each window (except the favourites) has a number in the upper left
corner. The numbers indicate the current screen and level.
Favourite screen
The screen Favourites is used to display engine data during operation,
more or less equivalent to Scania analogue instrument panel. The
favourite screen can have three different appearances, all on the
highest level.
If you want to change from one Favourite to another Favourite, press
button 1 or 5 depending on which is currently displayed.
On this screen, the buttons have the following functions:
1Scroll to the left in the upper level
2
3
4Go down one level in the structure
5Scroll to the right in the upper level
Change the appearance of a Favourite by pressing button 4.
The button screen shown on the right, will then be displayed.
By pressing button 2 the appearance of the screen changes according to
the order on page 19.
When an appearance has been selected, it is possible to change the
contents of the selected window.
Press button 4 to display the button bar according to the table below.
- In order to select the contents for a partial window, it must be
active.
- Activate the partial window by pressing button 2. The window will
then be greyed out.
1Changing between digital and analogue signal
2Changing between greyed active partial screen
3Changing of signal in greyed active partial screen
- Change the active partial window by pressing button 2.
- The contents of the partial window is changed with button 3 and 1
according to the following table:
The information of the different partial windows can be displayed in
digital or analogue format. Some signals can only be displayed in one
format, see the table.
- Press button 1 to change between analogue and digital display (1).
- Press button 3 to change the content of the active partial window
(2).
Signal
Engine speedYesYes
Oil pressureYesYes
Coolant temperatureYesYes
Charge air pressureYesYes
System voltageYesYes
Fuel consumptionYesNo
Load at current speedYesNo
Engine hoursYesNo
ThrottleYesNo
Carry out the following in order to go to this screen from the basic
screen (favourite):
- Press any button to display the button bar.
- Press button 5 one to three times (depending on which favourite that
is active) to go to screen 4INFORMATION.
- The button bar will now stay on the screen.
- Buttons 2 and 3 are used to move up or down in this screen.
- Press button 4 to go down one step in the structure to STATISTICS
TRIP (4.1).
- Here is some information according to the screen.
- Press button 1 (Reset) in order to zero the reading.
- In order to go back to screen 4, press button 5.
- Maximum time for a registered reading is 999 h, then Reset will be
automatic.
x1-3
- Go down one step with button 2 to PERFORMANCE.
- Press button 4 to go down one step in the structure to
4.2 PERFORMANCE.
- The information displayed here is the current performance at that
time, i.e. the displayed values are real-time. Corresponding values
can also be read in the Favourite window, but this is a quicker way
to get a summary of the performance related parameters.
- Press button 4 to confirm the change. The box to the right will then
be marked, which means that the change has taken place.
- If you press button 1, information according to the table above is
displayed.
- Press button 5 to return.
ENGINE (6.5)
From this screen it is possible to change the basic settings of the engine
when it was delivered.
Note: Changing basic settings may affect safety-critical
functions.
- Press button 2 or 3 to go to ENGINE.
- Press button 4 to confirm the selection.
- To prevent unintentional changes, this function is passwordprotected. The password has a default setting of "2 2 2 2" but can be
changed by the end-customer, see 6.5.9.
Enter the password and press button 4 to proceed.
- A screen with a warning is displayed. Press button 3OK, to proceed
to the parameters that can be set.
On the first screen, 6 parameters are displayed and by pressing button
2, you can access the two last parameters.
There is a short description below about the engine settings that can be
made from this screen:
IDLE SPEED (6.5.1)
Low idling on a warm engine can be set between
500 and 1,050 rpm. It is not possible to reset the idle speed value if the
coolant temperature is below 50°C. If the engine is running on a raised
idle speed for any reason, the idle speed cannot be reset either
The lower temperature limit, which has the basic setting 95°C (203°F),
is the level for the alarm and torque reduction if this has been selected.
See page 33 for an example.
It is possible to set this level between 85°C (185°F) and 105°C
(221°F). The lower limit cannot be set above the upper temperature
limit.
HIGH TEMP LIMIT (6.5.3)
The upper temperature limit, which has the basic setting 105°C
(221°F), also makes it possible (in addition to the alarm function) to
stop the engine automatically.
It is possible to set this level between 95°C (203°F) and 105°C
(221°F). The upper limit cannot be set below the lower temperature
limit.
FIXED SPEED 1 (6.5.4)
Setting of upper torque limit:
This is an isochronous idle speed which can be set and activated from
Scania Control Panel. See page 14.
On Scania EMS Display it is then possible to set an upper torque limit
for FIXED SPEED 1. This setting only applies when FIXED SPEED 1
is activated.
FIXED SPEED 2 (6.5.5)
Setting of upper torque limit:
This is an isochronous idle speed which can be set and activated from
Scania Control Panel. See page 14.
On Scania EMS Display it is then possible to set an upper torque limit
for FIXED SPEED 2. This setting only applies when FIXED SPEED 2
is activated.
SAFETY SWITCH (6.5.6)
The safety switch (idle switch) is a safety function in Scania's electrical
system which checks that the accelerator pedal is functioning correctly.
The component is a closing switch that is activated when the
accelerator pedal position is greater than zero.
The function can be disengaged.
Note: A safety function is then disconnected.
FUEL DENSITY (6.5.7)
Fuel density affects the calculation of the engine power and it can be
noted here. Default is 840 kg/m3 and the setting range is
700-1,000 kg/m3.
The engine behaviour may vary depending on how EMS is
programmed.
SignalLineEMS behaviour
1Only alarm with fault
Low oil
pressure
High coolant
temperature
Low coolant
level
2Alarm and torque reduction
3Alarm and engine stop
4Engine stop and override
1Only alarm with fault
2Torque reduction
3Engine stop
4Torque reduction at the lower temperature limit
Engine stop at the upper temperature limit
5Engine stop and override
6Torque reduction at the lower temperature limit
Engine stop at the upper temperature limit and
override
1Only alarm with fault
2Alarm and torque reduction
3Alarm and engine stop
4Engine stop and override
- Press button 2 to go to ALARM REACTION.
- Press button 4 to go down one level.
- Select signal type using button 2 or 3 and go down to the EMS
function using button 4.
Here it is possible to configure Scania EMS Display for the electrical
system to be used. The alternatives are NO, SINGLE or DOUBLE.
- Press button 2 or 3 to go to BASE SYSTEM.
- Press button 4 to go to the selection screen.
- Press button 2 or 3 to select base system.
- Press button 4 to confirm the change. The box to the right will then
be marked, which means that the change has taken place.
- Press button 5 to return.
Alarm and fault code generation
Both new alarms and fault codes create dialogue boxes (so-called popup boxes).
The dialogue box for alarm has the highest priority for all functions in
Scania EMS Display.
Alarm
There are four different alarms available in the system:
When an alarm is created it is displayed as a warning on the basic
screen together with the alarm icon. The alarm signal sounds at the
same time both on the instrument panel and on Scania EMS Display.
Alarm signal on Scania EMS Display is confirmed by pressing button
3, OK. If there are more alarms (icons), one alarm has to be confirmed
at a time. Screen 1.
Each confirmed alarm is then displayed as an icon in the upper right
corner of the screen as long as a fault is active, irregardless of which
screen is active.
Note: All alarms must be confirmed before the next screen will be
displayed.
The screen in illustration 2 always has the same content.
If you press button 3, OK when in screen 2, you will return to the
screen displayed before the first alarm was generated. Screen 3.
1.
2.
External alarm signal
Output for external alarm
As soon as an alarm is present, pin 11 on the 12-pin display connector
is activated. The output can be used to activate a warning lamp or
suchlike. Pin 11 must be connected to earth a lamp or a relay connected
to +24V.