Scania instrumentation Operators Manual

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Analogue instrument panel
The analogue instrument panel has instruments for reading engine speed, coolant temperature and oil pressure. It also has hour counting and diagnostic and alarm switches and lamps.
The analogue instrument panel is available in 2 versions, depending on whether the engine is equipped with an SCR system or not.

Analogue instrument panel for engines without SCR system
1. Coolant temperature display
2. Adjusting instrument lighting brightness (Lamp intensity)
3. Buzzer deactivation (Buzzer off)
4. Lamp test (Lamp test)
5. Display for oil pressure
6. Display showing engine data, alarms and fault codes
7. Tachometer

Display in tachometer
Integrated in the tachometer is a digital display that shows engine data, alarms and fault codes. Button 1 displays the previous page and button 2 displays the next page. The table below describes how to go down a level in the structure.

Control panel
The engine is started and shut down from the control panel, which has a starter lock and functions for engine speed setting and idling setting.
1. Control for adjusting engine speed and idling speed
2. Control for storing new engine speed and idling speed
3. Control for activating engine speed setting 1
4. Control for activating engine speed setting 2
5. Control for deactivating engine speed setting 1 (marine engines) or 2 (industrial engines). 
6. Indicator lamp for limp home throttle control1
7. Limp home throttle control (Limp home)1
8. Starter lock
9. Indicator lamp for active panel (Active panel)

Starter lock
The starter lock (8) is used to start and shut down the engine.
Position 0: The engine electrical system and the engine are switched off.
Position 1: The engine electrical system is activated.
Position 2: The starter motor is activated.

Engine speed setting 1 and 2
Engine speed setting 1 is an engine speed set between high and low idling. High and low idling vary depending on the engine. The engine speed is set with control 3.
Engine speed setting 2 is an engine speed that is set between 450 and 2,000 rpm. The engine speed is set with control 4.
For both engine speed settings, torque limitation can be set via either the digital display or using SDP3. The engine speed settings are isochro-nous, i.e. the engine speed is held constant irrespective of load.
When either of the engine speed settings is activated, the engine speed goes up or down to the last saved engine speed.
In order to activate engine speed setting 1 or 2, the engine must be running, the active panel indicator lamp must be on and the throttle must be at 0%.
Change the engine speed:

  1. Activate engine speed setting 1 or 2 with control 3 or 4.
  2. Adjust engine speed up or down with control 1.
  3. Save the new setting by holding control 2 down for 3 seconds.

If the setting is not saved, the engine uses the last saved value next time engine speed setting is activated.
This is how to switch off the engine speed settings:
-Press control 5, touch the accelerator pedal or switch off the engine.

Limp home mode
Limp home mode is a marine engine function that is activated if the coordinator or accelerator pedal fails or if CAN communication is not working.
If one of these occurs, the indicator lamp for limp home throttle control 6 and limp home throttle control 7 is connected.
The limp home throttle consists of a potentiometer on the control panel which can be used to limp home. The potentiometer value goes directly to connector A2 on the engine control unit.
In order to use the limp home throttle control, the potentiometer must first be turned to the 0 position and then activated.

Remote control
The remote control for marine engines is connected on connector C4044 on the main junction box. The remote control can be used to lock the engine so that it cannot be controlled from anywhere other than where the remote control is located.

There are 2 positions for key switch 3: Local and Remote.

  1. Local: The engine cannot be controlled from anywhere other than from the remote control.•Remote: Normal position, i.e. the engine can be operated from the other throttle control positions. When Local mode is activated, the green indicator lamp 1 comes on. At the same time the active panel indicator lamp on the control panel starts to flash, which indicates that the control panel cannot be activated.

When the engine is started from the remote control via starter button 2, it only runs at idling speed whileLocal mode 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 indicator lamp 1 goes out and the engine continues to run at idling speed. Other control positions can however take command of throttle control, if the control panel is activated. If key switch 3 is reset from Remote to Local while running, nothing happens, but this will be regarded as an unintentional action.

If CAN communication fails when the engine has been started from the remote control, the engine will stop, but the limp home throttle pedal will not be engaged.
In order to start the engine again, it is necessary to carry out the following connection:
-Connect pin 50 on the starter relay to the positive pin on the starter motor. The engine starts but it is only possible to control the throttle using the limp home throttle control. In order to switch off the engine you must switch off the power to the engine control unit by turning the starter key to 0. Alternatively you can switch off the power via connector C4027 in the main junction box.

Digital display
The digital display shows engine data and any alarm systems and fault codes. But the display can also be used to set certain parameters in the engine control unit.
Function
The information content can be found in different screens according to a tree structure. The are 6 different screens at the top level:

  1. 3 favourite screens
  2. Information
  3. Diagnostics
  4. Settings

The buttons on the display have different functions depending on which screen is active. Use buttons 1 and 5 to scroll between the different screens at the top level, depending on which direction you want to go in the loop.
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. When a button is pressed, the description of the buttons is displayed for about 5 seconds. Each window apart from the favourite screens is numbered at the top left. The numbering indicates the favour-ite screen and the level of the structure you are on.

Change appearance of Favourite screen
If you want to change the appearance of a favour-ite screen, press button 4.
Then press button 2 to change the appearance of the screen in the sequence on the previous page.

Change content in window
Press button 4 from the change appearance position on the favourite screen to display the button panel in the table below. In order to select the contents of a subwindow, it must be active. Activate a window by pressing button 2. The information in the different subwindows can be displayed in digital or analogue format.

System data (4.3)
Go down 2 steps in the list by pressing button 2. Then go down one step in the structure to the System data display by pressing button 4.
Information about the different system control units is displayed in this display mode:

  • Digital display (Display)
  • Engine control unit (EMS)
  • Coordinator (COO Master)
  • SCR control unit

Move up and down the list by pressing buttons 2 and 3.
Display information about the control unit concerned by pressing button 4.
Digital display (Display)
Information on:

  • Part number (assembly part number)
  • Hardware number
  • Software number
  • Version number

Engine control unit (EMS)
Information on:

  • Engine serial number
  • Engine type
  • Engine control unit part number

Coordinator
Information on:

  • Part number (assembly part number)
  • Hardware number
  • Software number
  • Version number

SCR control unit
Information on:

  • Hardware number
  • Software number

Lower temperature limit (6.5.2)
The lower temperature limit, which has a default setting of 95°C (203°F), is the level for the alarm and for torque reduction if torque reduction has been selected. See section 6.5.8.
The lower temperature limit can be set between 85°C (185°F) and 105°C (221°F). The lower temperature limit cannot be set to a higher value than the upper temperature limit.

Upper temperature limit (6.5.3)
The upper temperature limit, which has a default setting of 105°C (221°F), is the level for the alarm and also for engine shutdown if engine shutdown has been selected. See section 6.5.8.
The upper temperature limit can be set between 95°C (203°F) and 105°C (221°F). The upper temperature limit cannot be set to a lower value than the lower temperature limit.

Engine speed setting 1 (6.5.4)
Engine speed setting 1 is a constant idling speed set and activated from the control panel. See section Engine speed setting 1 and 2.
An upper torque limitation for engine speed setting 1 can be set in the digital display. The setting only applies when engine speed setting 1 is activated.

Idling switch (6.5.6)
The idling switch is a safety function in Scania's electrical system which checks that the accelerator pedal is functioning correctly.
The idling switch is a closing switch that is activated when the accelerator pedal is activated.
The function can be disengaged.

  1. Scania Manual Tecnico Motor.pdf  
  2. Scania Manual de esquema elétrico.pdf 
  3. Scania Motores de 11 e 12 litros.pdf 
  4. Scania Motores DN11, DS11 manual.pdf
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