Scania EMS Instrumentation Operator's Manual
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
10
3
7
4
8
12
9
9
2
10
5
10
6
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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.
S54
S51
W6
W1
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
W5
W7
O1
W4
S53
W21
S52
O3
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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
47
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
96
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
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
1)
11
11
12
12
2)
1)
2)
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.
21
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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