Scania EMS Instrumentation Operator's Manual

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Scania EMS

Instrumentation

1 588 955

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Contents

Scania EMS Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Instrument Panel (analogue). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Troubleshooting using flash codes for the EMS control unit . . . . . .8

Overview of flashing codes for EMS control unit . . . . . . . . . . . . . .9

Troubleshooting using flash codes for the EMS coordinator . . . . .10

Overview of flash codes for EMS coordinator . . . . . . . . . . . . . . . .11

Scania Control Panel (SCP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Remote Control Box (RCB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Scania EMS Display (SED) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Favourite screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Information (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Fault codes (5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Settings (6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Alarm and fault code generation. . . . . . . . . . . . . . . . . . . . . . . . . . .34

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Scania EMS Instrumentation

General

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 display 10 and Control Panel, 8 and 9, are described.

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1. Control Unit S6

2. Main Supply Box

3. Coordinator

4. Coordinator

5. Connection Box Coordinator (master)

6. Connection Box Coordinator (slave)

7. Control Panel (master)

8. Control Panel (slave)

9. Instrument Panel

10. Scania EMS Display

11. Accelerator Position Sensor

12. Remote Control Box Scania instrumentation, dual system

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Instrument Panel (analogue)

General

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).

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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

O1 Tachometer with hour counter O2 Coolant temperature gauge O3 Oil pressure gauge S51 Deactivation of buzzer S52 Lamp test switch S53 Diagnostic switch S54 Rheostat for instrument lighting W1 Charge warning lamp W4 Warning lamp, coolant temperature W5 Warning lamp, oil pressure W6 Warning lamp, hydraulic pressure W7 Warning lamp, coolant level W21 Diagnostic lamp

S53

W21

S52

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Scania analogue instrument panel

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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.

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Overview of flashing codes for EMS control unit

Code Description

No fault detected.

0 11 12 13 14 15 16 17

18 20

Overspeed. One or both rotation speed sensors are indicating values above 3000 rpm.

Rotation speed sensor 1 faulty, or incorrect signal.

Rotation speed sensor 2 faulty, or incorrect signal.

Coolant temperature sensor faulty, or incorrect signal.

Charge air temperature sensor faulty, or incorrect signal.

Charge air pressure sensor faulty, or incorrect signal.

Oil temperature sensor faulty, or incorrect signal.

Oil pressure sensor faulty, or incorrect signal.

Coolant level sensor faulty.

Code

53 54 55 56 57 58 59 61

66 69

Description

PDE in cylinder 3: The solenoid valve does not work correctly.

PDE in cylinder 4: The solenoid valve does not work correctly.

PDE in cylinder 5: The solenoid valve does not work correctly.

PDE in cylinder 6: The solenoid valve does not work correctly.

PDE in cylinder 7: The solenoid valve does not work correctly.

PDE in cylinder 8: The solenoid valve does not work correctly.

Incorrect signal in extra analogue input.

Incorrect control unit shutdown.

Shutdown due to coolant level Starter motor function interrupted or not

activated.

23 24

25 27 28

31 32 33

37 43

Fault code internally in the coordinator. Accelerator pedal / brake. If the accelerator

and brake pedals have been operated simultaneously.

Accelerator pedal sensor / idling switch Accelerator pedal sensor / kick-down switch

Engine shutdown bypassed.

Shutdown due to oil pressure

Torque limitation due to oil pressure Incorrect parameters for limp home function. Battery voltage incorrect or no signal.

Emergency shutdown switch activated in accordance with CAN message from coordinator.

CAN circuit faulty in the control unit. Immobiliser function. Ignition key code

incorrect.

82 83

84 85 86

87 88 89

93 94

Rotation speed above ref.speed at start

Fault in memory circuit (EEPROM) in control unit.

Data transfer to the control unit memory (EEPROM) has been interrupted.

Incorrect temperature internally in the control unit.

Internal fault in the control unit: Fault in hardware control.

Fault in control unit RAM. Internal control unit fault: Memory fault Incorrect seal: Prohibited changes in software.

Rotation speed sensors faulty or not connected.

Shutdown due to high coolant temperature. Torque limitation due to high coolant

temperature.

48 49 51 52

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CAN message from the coordinator incorrect or missing.

Incorrect CAN version in control unit or coordinator.

PDE in cylinder 1: The solenoid valve does not work correctly.

PDE in cylinder 2: The solenoid valve does not work correctly.

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98 99

Incorrect voltage supply to one of the sensors.

Internal hardware fault in the processor (TPU).

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

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.

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Overview of flash codes for EMS coordinator

Flashing

Fault description

code

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.

13 No communication (EMS) with the engine. 14 Short-circuit in the tachometer signal cable. 15 Faulty atmospheric pressure sensor. 17 Short-circuit in the coolant temperature gauge signal cable. 18 Short-circuit in the oil pressure gauge signal cable. 19 Short-circuit in the oil pressure lamp signal cable.

Different versions of the communications protocol between the coordinator and EMS.

22 Faulty start switch or short circuit. 23 The supply voltage is too high. 24 The supply voltage is too low. 25 Check value from end of line (EOL) is incorrect. 26 Road speed sensor signal missing or incorrect. 27 The signals from the RCB (Remote Control Box) switches are implausible. 28 Incorrect signals from the droop-setting switches. 29 Faulty remote start switch or short circuit. 31 No communication from the slave coordinator or the master coordinator. 32 Short circuit in the signal cable to the coolant temperature warning lamp. 33 Short circuit in the signal cable to the charge indicator lamp. 34 Incorrect signal from the Fixed speed switches. 35 Fault in CAN communication.

1) Single speed engine

2) All-speed engine

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Scania Control Panel (SCP)

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.

S42 W19

S49 S43

S46

S45

S47

W20

S50

W20

1. Master panel

2. Slave panel W19 Lamp for Active Panel W20 Lamp for Limp Home Throttle S1 Ignition key S42 Switch for Active Panel function S43 Switch for activating and switching between Fixed Speed 1 and 2 S45 Switch for storing S46 Stop button S47 Switch for adjusting Fixed Speed / idle speed up or down S49 Switch for deactivating Fixed Speed function S50 Potentiometer for Limp Home Throttle

Scania Control Panel with ignition key

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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.

Remote Control Box (RCB)

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.

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- In order to start the engine again, it is necessary to carry out the following procedure:

- Connect pin 50 on the starter relay with the plus pin on the

starter motor. The engine starts but it is only possible to control the throttle using the Limp Home potentiometer

- In order to stop the engine you must switch off the power to EMS S6 by turning the starter key to 0 or via switch C122 in the MSB.

S27

S26 S28

1 Green indicator lamp S26 Rotary switch for activating the Local function S27 Starter button S28 Stop button

Scania Remote Control Box (RCB)

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Scania EMS Display (SED)

General

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.

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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:

1 Scroll to the left in the upper level

4 Go down one level in the structure

5 Scroll 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.

1 Changing between digital and analogue signal

2 Changing between greyed active partial screen

3 Changing of signal in greyed active partial screen

5 Go up one level in the structure

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- 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 speed Yes Yes Oil pressure Yes Yes

Coolant temperature Yes Yes Charge air pressure Yes Yes System voltage Yes Yes Fuel consumption Yes No Load at current speed Yes No Engine hours Yes No Throttle Yes No

Digital display

Analogue display

Symbol

RPM

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Information (4)

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 4 INFORMATION.

- 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.

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- In order to go back to screen 4, press button 5

- Go down one step with button 2 to SYSTEM DATA.

- Press button 4 to go down one step in the structure to

4.3 SYSTEM DATA.

- Here it is possible to select information about the four different system control units.

- If you select EMS and press 4, information about the engine, engine number and engine type and the EMS control unit part number will be displayed.

- If you select DISPLAY the following information about Scania EMS Display is displayed:

- Part number (complete)

- Hardware number

- Software number

- Version number

- The corresponding information is retrieved for the coordinators if the COO MASTER or COO SLAVE is selected.

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Fault codes (5)

- Return to screen 4 INFORMATION by pressing twice on 5. If you press button 5 again, screen 5 FAULT CODES. is displayed.

- The upper symbol to the right indicates that there is at least one active fault code.

- The button bar has a different appearance and it will be displayed the whole time. Refer to the table below.

1 Scroll to the left in the upper level 2 Go down to the next line in the list 3 Short press: Up to the next line in the list

Long press (3 s): Update the list

4 Short press: Information about the highlighted fault code

Long press (3 s): Clear fault codes

5 Scroll to the right in the upper level

- In the example, the Coolant temp sensor and Oil pressure sensor marked by a ! which means that they are active fault codes.

Information about the highlighted fault code

In the example, Coolant temp sensor is black. By a short press on button 4 the information screen about the fault code is displayed.

Information type Description

Affected control unit The control unit where the fault originated,

e.g. EMS Name of fault Fault code name, e.g. Coolant temp sensor System behaviour How the system is behaving when the fault

is active, for example Problems starting Code The number of the selected fault code, e.g.

2001 Status If the fault is active Hex code Gives more information than just status,

e.g. 20

or passive

Times How many times that the fault has occurred,

e.g. 3

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To erase fault codes

- Press button 4 for three seconds.

- A screen asking if you want to erase all fault codes is displayed.

- Press button 1 to erase all fault codes.

- Then press button 3, OK, to confirm.

3 s

Update the fault code list

- Update the fault code list by pressing button 3 for three seconds.

- Confirm by pressing button 3, OK.

3 s

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Settings (6)

- Press button 1 or 5 from the Favourite screen to go to screen 6 SETTINGS.

- In order to quickly go to the setting mode, irregardless of where you are: Press buttons 2 and 4 simultaneously.

CONTRAST / BRIGHTNESS (6.1)

- Using buttons 2 and 3 to go up or down in the list.

- Press button 4 to go to the adjustment screen for CONTRAST / BRIGHTNESS.

- Here it is possible to adjust the brightness and contrast to the current operating conditions.

- In order to reset to the original setting, press buttons 2, 3 and 4 at the same time for three seconds.

BUTTON BLEEP (6.2)

- Press button 2 to go to BUTTON BLEEP.

- Press button 4 to go to the adjustment screen.

- Press button 3 to change between BUTTON BLEEP OFF or

BUTTON BLEEP ON

- Press button 5 to return to the selection screen.

- The setting BUTTON BLEEP OFF does not affect the alarm signal.

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LANGUAGE (6.3)

Information on Scania EMS Display can be displayed in seven different languages:

Swedish English German French Spanish Italian Portuguese

The default language is English

- Press button 2 or 3 to go to LANGUAGE.

- Press button 4 to go to the selection screen.

- Press button 2 or 3 to select language.

- Press 4 to confirm the change. The box to the right about selecting language will then be marked, which means that the change has taken place.

- Press button 5 to return.

UNITS (6.4)

It is possible to select between two different sets of units for different parameters according to the table:

METRIC US IMPERIAL

Parameter Metric US Imperial

Pressure Bar Psi Voltage V V Engine speed Rpm Rpm Temperature °C °F Fuel consumption L/h, L Gal/h, Gal*

*) US Gallon = 3.79 l

- Press button 2 or 3 to go to UNITS.

- Press button 4 to go to the selection screen.

- Press button 2 or 3 to select unit system.

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- 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 3 OK, 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

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LOW TEMP LIMIT (6.5.2)

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.

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ALARM REACTION (CMOL) (6.5.8)

The engine behaviour may vary depending on how EMS is programmed.

Signal Line EMS behaviour

1 Only alarm with fault

Low oil pressure

High coolant temperature

Low coolant level

2 Alarm and torque reduction 3 Alarm and engine stop 4 Engine stop and override 1 Only alarm with fault 2 Torque reduction 3 Engine stop 4 Torque reduction at the lower temperature limit

Engine stop at the upper temperature limit 5 Engine stop and override 6 Torque reduction at the lower temperature limit

Engine stop at the upper temperature limit and

override 1 Only alarm with fault 2 Alarm and torque reduction 3 Alarm and engine stop 4 Engine 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.

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- Select the EMS function using button 2 or 3. On the displayed screen: ONLY ALARM.

- Press 4 to confirm the selection. The box to the right will then be marked, which means that the change has taken place.

- Press button 1 to get a more detailed description of the selected EMS function.

- Press button 5 to return.

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CHANGE PASSWORD (6.5.9)

A new password can be set, the valid values are 0001 - 9999.

- Press button 4 to change the password.

- Enter the desired password and press button 4

- Press button 4 to confirm the password.

- Press button 4 to return.

Note: If you have forgotten the password, contact your

nearest Scania representative.

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Example

Setting of LOW TEMP LIMIT (6.5.2)

- Press button 4 to proceed.

- Enter the password and press button 3 A warning is displayed.

- Press button 3 OK, to confirm the warning and proceed to the parameters that can be set.

- Press button 2 or 3 to move up or down in the selection screen.

- Press button 4 when for example LOW TEMP LIMIT has been selected.

- Press button 4 again to display the setting screen.

- Press button 2 or 4 to increase or decrease the setting value.

- Press + or - and automatic deletion of old values and the new value is entered.

- Press button 5 to return.

The same settings can be made for the other parameters.

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BASE SYSTEM (6.6)

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:

Alarm Icon Remarks

Low oil pressure

High coolant temperature

Low coolant level

Alternator does not charge System voltage

displayed

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Function

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.

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.

Maximum current 200mA.

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Fault code generation

There are several fault codes in the electrical system to help when a system fault or engine fault occurs.

When a new active fault code is registered in the system, it will be displayed on the screen as in illustration 1.

Confirm all active fault codes by pressing button 3, OK. In the next screen, a spanner icon is displayed in the upper right corner. Screen 2.

This is displayed when at least one fault code is active. It is not possible to view the number of active fault codes from these

screens. To view active fault codes, go to the description of Fault codes on page 20.

When starting the system a dialogue box as in illustration 1 is displayed if there is at least one active fault code.

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Scania EMS Instrumentation Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Scania EMS Instrumentation

General

Instrument Panel (analogue)

General

Troubleshooting using flash codes for the EMS control unit

Erasing fault codes (flash codes)

Troubleshooting using flash codes for the EMS coordinator

Erasing fault codes (flash codes)

Scania Control Panel (SCP)

Remote Control Box (RCB)

Scania EMS Display (SED)

General

Function

Favourite screen

Information (4)

Fault codes (5)

Settings (6)

Alarm and fault code generation