Scania EMS Instrumentation 1 588 955 - part 1
Scania EMS
Instrumentation
1 588 955
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1
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
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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
3
4
7
8
12
9
9
2
10
10
10
5
6
11
11
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.
W6 W1 W5 W7 W4 S53 W21
S54
S52
S51
O1
O3
O2
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
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
Code
Description
PDE in cylinder 3: The solenoid valve does not
0
No fault detected.
53
work correctly.
Overspeed. One or both rotation speed
PDE in cylinder 4: The solenoid valve does not
11
54
sensors are indicating values above 3000 rpm.
work correctly.
Rotation speed sensor 1 faulty, or incorrect
PDE in cylinder 5: The solenoid valve does not
12
55
signal.
work correctly.
Rotation speed sensor 2 faulty, or incorrect
PDE in cylinder 6: The solenoid valve does not
13
56
signal.
work correctly.
Coolant temperature sensor faulty, or incorrect
PDE in cylinder 7: The solenoid valve does not
14
57
signal.
work correctly.
Charge air temperature sensor faulty, or
PDE in cylinder 8: The solenoid valve does not
15
58
incorrect signal.
work correctly.
Charge air pressure sensor faulty, or incorrect
16
59
Incorrect signal in extra analogue input.
signal.
Oil temperature sensor faulty, or incorrect
17
61
Incorrect control unit shutdown.
signal.
18
Oil pressure sensor faulty, or incorrect signal.
66
Shutdown due to coolant level
Starter motor function interrupted or not
20
Coolant level sensor faulty.
69
activated.
23
Fault code internally in the coordinator.
82
Rotation speed above ref.speed at start
Accelerator pedal / brake. If the accelerator
Fault in memory circuit (EEPROM) in control
24
and brake pedals have been operated
83
unit.
simultaneously.
Accelerator pedal sensor / idling switch
Data transfer to the control unit memory
25
84
Accelerator pedal sensor / kick-down switch
(EEPROM) has been interrupted.
Incorrect temperature internally in the control
27
Engine shutdown bypassed.
85
unit.
Internal fault in the control unit: Fault in
28
Shutdown due to oil pressure
86
hardware control.
31
Torque limitation due to oil pressure
87
Fault in control unit RAM.
32
Incorrect parameters for limp home function.
88
Internal control unit fault: Memory fault
33
Battery voltage incorrect or no signal.
89
Incorrect seal: Prohibited changes in software.
Emergency shutdown switch activated in
Rotation speed sensors faulty or not
37
accordance with CAN message from
93
connected.
coordinator.
43
CAN circuit faulty in the control unit.
94
Shutdown due to high coolant temperature.
Immobiliser function. Ignition key code
Torque limitation due to high coolant
47
96
incorrect.
temperature.
CAN message from the coordinator incorrect
48
98
Incorrect voltage supply to one of the sensors.
or missing.
Incorrect CAN version in control unit or
49
99
Internal hardware fault in the processor (TPU).
coordinator.
PDE in cylinder 1: The solenoid valve does not
51
work correctly.
PDE in cylinder 2: The solenoid valve does not
52
work correctly.
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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.
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Overview of flash codes for EMS coordinator
Flashing
Fault description
code
111)
Incorrect signal from the nominal rotation speed signal fine adjustment.
112)
Incorrect analogue signals from the accelerator pedal sensor.
121)
Incorrect analogue signal from the resistor module for governor setting.
Incorrect analogue signal from the resistor module for idling and fixed speed
122)
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
21
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
W19S45 S47
S49
S43
W20
S46
S1
S50
W20
2
1
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
S42
W19
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.
See also under Limp Home Throttle.
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Fixed Speed 1 and 2
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
S49
S45
S47
S43
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.
- 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.
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Idle speed adjustment
Adjust the engine idle speed as follows:
1. Activate Store switch S45 for 3 seconds in order to go to
adjustment mode.
S45
S47
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.
With single instrumentation, the stop button can be located in 2 places:
S46
- 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.
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Limp Home Throttle
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
W20
not working.
If this happens Limp Home lamp W20 will come on and Limp Home
Throttle will be engaged.
S50
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.
If the master control fails when the master panel is active, the lamps on
S1
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.
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