MODEL 963, 964
W54.25>1156>79
A43 Modular switch panel (MSF) control unit
A44 Instrument panel switch module 1 A45 Instrument panel switch module 2 A46 Instrument panel switch module 3 A47 Switch module special equipment A48 Roof switch module 1
A49 Roof switch module 2
A50 Lower driver bunk switch module
S110 Left multifunction steering wheel button group
S111 Right multifunction steering wheel button group
S948 Hazard warning system switch ASIC ASIC data bus (Application System
Integrated Circuit) A51 Upper driver bunk switch module
CAN 2 Interior CAN
LIN 4 Left multifunction control lever>LIN LIN 7 Button group LIN
LIN 8 Level control LIN S19 Exterior lights switch
S20 Left multifunction control lever S21 Headlamp range adjustment switch S22 Level control operating unit
General information
The modular switch panel (MSF) is an advanced development of the familiar MFS in the ACTROS MP III.
The modular switch panel (MSF) control unit (A43) remains the master module to which the switch module and the other switches are connected. The connection to the interior CAN (CAN 2) connects it to all the other electronic systems.
The following two different type of data bus are used: f ASIC data bus (ASIC)
f LIN data bus (LIN), split up into:
> Left multifunction control lever>LIN (LIN 4) > Button group>LIN (LIN 7)
> Level control>LIN (LIN 8)
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Connected to the ASIC data bus (ASIC) are the switch modules with the signal and load switches.
Connected to the left multifunction control lever>LIN (LIN 4) is the left multifunction control lever (S20).
The button group>LIN (LIN 7) is equipped with the left and right multifunction steering wheel button groups (S110, S111). Connected to the level control>LIN (LIN 8) is the level control operating unit (S22).
Conventional electrical lines are used to connect the following switches to the modular switch panel (MSF) control unit (A43): f of the exterior lights switch (S19)
f of the headlamp range adjustment switch (S21) f of the hazard warning system switch (S948)
Function
The modular switch panel (MSF) control unit (A43) is responsible for the master function when recording and transmitting the various control functions.
The other components are responsible for the slave function. They are used solely for recording the control functions when operated by the driver or they respond to corresponding request issued by the modular
switch panel (MSF) control unit (A43). The modular switch panel (MSF) control unit (A43) is also responsible for the voltage supply, monitoring and, where applicable,, the background illumination of the connected system components.
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The control functions are recorded when the following switches are operated:
f Signal switches in the switch modules f Load switches in the switch modules
f Left multifunction steering wheel button group (S110) f Right multifunction steering wheel button group (S111) f Level control operating unit (S22)
f Left multifunction control lever (S20) f Exterior lights switch (S19)
f Headlamp range adjustment switch (S21) f Hazard warning system switch (S948)
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Electrical data exchange varies to match the connection of the operating components to the modular switch panel control unit (A43):
f Signal switches generate a message and send it to the ASIC data bus (ASIC).
f Load switches do not generate a message, they only switch the voltage supply through to the relevant consumers. f The left and right multifunction steering wheel
button groups (S110, S111), the level control operating unit (S22) and the left multifunction control lever (S20) generate a message and send it to the respective LIN data bus.
f The remaining switches switch electrical shift signals. f The modular switch panel (MSF) control unit (A43) uses the
information read in to generate corresponding
CAN messages that are then sent to the interior CAN (CAN 2). Therefore, within the overall network the control units of the other electronic systems have access to the data.
Overall network modular switch panel
Page 162
Modular switch panel (MSF) control unit component description
A43
Page 370
Instrument panel switch modules, component description
A44, A45, A46
Page 372
Switch module special equipment, component description
A47
Page 374
Roof switch modules, component description
A48, A49
Page 375
Bunk switch modules, component description
A50, A51
Page 376
Multifunction steering wheel, component description
GF54.25>W>0001>01H Overall network modular switch panel
W54.25>1184>79
A43 Modular switch panel (MSF) control unit
CAN 2 Interior CAN
LIN 4 Left multifunction control lever>LIN LIN 7 Button group LIN
LIN 8 Level control LIN
Z1 Cab instrument panel CAN bus star point
ASIC ASIC data bus (Application System Integrated Circuit)
S20 Left multifunction control lever S22 Level control operating unit S110 Left multifunction steering wheel
button group
S111 Right multifunction steering wheel button group
GF54.30>W>0008H
Instrument cluster, function
2.8.11
MODEL 963, 964
W54.30>1354>75
A1 Instrument cluster (ICUC) control unit
A1 h1 Turn signal light indicator lamp, left trailer
A1 h2 Turn signal light indicator lamp, left side of vehicle
A1 h3 Turn signal light indicator lamp, right trailer
A1 h4 Turn signal light indicator lamp, right side of vehicle
A1 h5 Fuel supply indicator lamp A1 h6 AdBlue“ level indicator lamp
A1 h7 Diesel particulate filter indicator lamp, automatic regeneration A1 h8 Diesel particulate filter warning
lamp, malfunction A1 h9 High beam indicator lamp A1 h10 Permanent brake indicator lamp A1 h11 Parking brake indicator lamp A1 h12 Standing lamps indicator lamp A1 h13 MIL indicator lamp
A1 h14 Level control indicator lamp A1 h15 Differential lock indicator lamp
A1 p1 Multifunction display A1 p2 Vehicle speed display A1 p3 Fuel level indicator
A1 p4 Time and outside temperature indicator
A1 p5 Rpm display A1 p6 AdBlue“ level gauge
A1 p7 Trip and total distance display A1 h16 Cab release warning lamp
A1 h17 Brake request indicator lamp A1 h18 Hill holder indicator lamp A1 h19 Active Brake Assist shutoff
indicator lamp
A1 h20 ESP“ shutoff indicator lamp A1 h21 ASR indicator lamp A1 h22 ESP“ indicator lamp A1 h23 ABS indicator lamp
A1 h24 Brake pressure level warning lamp
W54.30>1355>08
1 Main menu menu bar 2 Submenu menu bar 3 Text bar
4 Menu and event window
A1 Instrument cluster (ICUC) control unit
A1 p1 Multifunction display 5 Status area
6 Installation locations (for additional indicator lamps)
General information
The instrument cluster (ICUC) (A1) notifies the driver of all dynamic and static driving conditions as well as about the current condition of the systems installed in the vehicle.
In the event of faulty vehicle functions or functions relevant to safety, corresponding warnings are issued via the IC.
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The following displays are incorporated into the instrument cluster in order to be able to convey information to the driver: f Permanent displays
(e.g. vehicle speed, rotational speed, tank contents) f Indicator lamps (blue, green, yellow)
(e.g. high beams, turn signal light, permanent brake) f Warning lamps (red)
(e.g. brake pressure level, cab release) f Multifunction display (A1 p1)
((e.g. event messages, status of driving assistance systems, gear indicator, additional indicator and warning lamps) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1 Multifunction display (A1 p1)
f The symbols of the possible main menus are displayed in the main menu menu bar (1). The symbol of the active main menu has a light background.
f The number of submenus is displayed in the submenu menu bar (2). The position of the active submenu has a light background.
f The active menu is displayed as text in the text bar (3). f The active menu or events are displayed in the menu and
event window (4).
i Events are displayed automatically and e.g. contain information or messages on malfunctions. When an event is acknowledged with the "OK" button, a message or malfunction symbol continues to be displayed in the status area (5).
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f In the status area (5), the gear indicator, information on active driving assistance systems and gray, yellow or red symbols are displayed as a supplement for the menu and event window (4).
Overview of available main menus
f Tour data f Driving mode
f Audio and communication f Operation and maintenance f Control information f Settings
i When the ignition is switched on, the "Truck info" submenu in the "Tour data" menu is displayed automatically.
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2 Memory function
The instrument cluster (ICUC) control unit (A1) is equipped with a so>called "Mirror memory".
It contains a copy of the parameterization data of all control units present in the central gateway control unit (CGW) (A2) units, as well as the service life data of the maintenance system (MS) control unit (A2 a3).
i When the central gateway (CGW) control unit (A2) is exchanged, it becomes easier to restore the original parameterization state.
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3 Monitoring function
The instrument cluster (ICUC) control unit (A1) monitors the central gateway (CGW) control unit (A2) and the electronic brake control (EBS) control unit (A10b/A10c) for failure. Monitoring takes place based on the CAN messages transmitted by the control units and the control unit IDs they contain. If no CAN message is received by one of the two control units over a specified period of time, then the instrument cluster (ICUC) control unit (A1) assumes that the corresponding control unit has failed. A fault message is then displayed in the multifunction display (A1 p1).
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4 Automatic dimming of background illumination
The background illumination of the instrument cluster is dimmed
by a photo diode integrated into the instrument cluster. There are different dimming curves that depend on the light switch position and the light intensity sensed by the photo diode.
5 Video function
With code (J1C) Instrument cluster 12.7 cm with video function,
the instrument cluster is equipped with a video signal input and the corresponding software application in order to process the signal of a camera (e.g. reversing camera) and to display it in the multifunction display (A1 p1).
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If code (J2D) Bluetooth radio navigation system, comfort is installed, the video function is carried out by the Truck Control Center (TCC) (A9). Code (J1C) Instrument cluster 12.7 cm with video function then only serves as a control code. In this case, code (J1E) Instrument cluster 12.7 cm with additional displays is installed.
With code (J9J) Preinstallation for reversing camera, the camera is connected to the instrument cluster (ICUC) control unit (A1) or to the Truck Control Center (TCC) (A9) via a coaxial video signal line, which leads to the cab/chassis connector. Further wiring and the camera are available through Mercedes>Benz Accessories. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
6 Actuation of additional indicator lamps
Additional indicator lamps, e.g. for body manufacturers can be installed into the installation locations (6). Power is supplied to these indicator lamps via a special, continuously actuated output that can be loaded with 10 watts (connector A1X1.18/1) on the instrument cluster (ICUC) control unit (A1). To dim the indicator lamps, they are actuated by a pulse width modulated signal (PWM). In order to operate the indicator lamps, terminal 31 must be connected.
Instrument cluster, overall network
Page 166
Instrument cluster operating notes
Page 167
Display fuel quantity, function
Page 168
Display outside temperature, function
Page 169
Display engine speed, function
Page 170
Display speed and travel distance, function
Page 171
Display AdBlue level, function
Page 173
Redundancy operation of Electronic Air> Processing Unit (EAPU), function
GF54.30>W>0008>01H Instrument cluster, overall network
W54.30>1356>79
A1 Instrument cluster (ICUC) control unit
A2 Central gateway control unit (CGW) A2 a3 Maintenance system (MS) control
unit
A3 Drive control (CPC) control unit A4 Engine management control unit
(MCM)
A6 Anti>theft alarm system (ATA) control unit
A7 Cab signal acquisition and actuation module control unit (SCA)
LIN 7 Button group LIN LIN 10 EAPU>LIN P1 Tachograph (TCO)
S110 Left multifunction steering wheel button group
S111 Right multifunction steering wheel button group
Z1 Cab instrument panel CAN bus star point
Z3 Frame CAN bus star point Z4 Drive CAN bus star point A8 Frame signal acquisition and
actuation module control unit (SCH)
A18 Electronic Air Processing Unit (EAPU) control unit
A43 Modular switch panel (MSF) control unit
A60 Exhaust aftertreatment (ACM) control unit
CAN 1 Exterior>CAN CAN 2 Interior CAN CAN 3 Frame CAN CAN 4 Drive train CAN
GF54.30>W>0008>02H Instrument cluster operating notes
W82.90>1001>11
S110 Left multifunction steering wheel button group S110 s1.1 "Up" button S110 s1.2 "Left" button S110 s1.3 "Down" button S110 s1.4 "Right" button S110 s1.5 Button "O. K." S110 s2.1 "+" button S110 s2.2 ">" button S110 s3 "Memory" button
The instrument cluster is operated solely using the left multifunction steering wheel button group (S110).
The different menus and submenus in the multifunction display (A1 p1) of the instrument cluster can be operated via the button groups.
> The "Left" (S110 s1.2 ) and "Right" (S110 s1.4) buttons can be used to scroll between the main menus.
> The "Up" (S110 s1.1 ) and "Down" (S110 s1.3) buttons can be used to scroll within a main menu and in the submenus. > Button "O.K." (S110 s1.5) can be used to acknowledge and
hide events displayed in the event window of the multifunction display (A1 p1).
> The "Memory" button (S110 s3) can be used to save a menu and/or submenu as a favorite.
i To save a menu as a favorite, the "Memory" button (S110 s3) must be pressed for more than 3 s while the menu and/or submenu is displayed. When it is pressed again, the saved page is displayed again.
> It is also possible, if "OK" is additionally displayed in a submenu in the event window, to open and close additional input windows by pressing the button
GF54.30>W>3018H
Display fuel quantity, function
2.8.11
MODEL 963, 964
W54.30>1362>82
A1 Instrument cluster (ICUC) control unit A1 p3 Fuel level indicator
A2 Central gateway control unit (CGW) A6 Anti>theft alarm system (ATA) control unit
A8 Frame signal acquisition and actuation module control unit (SCH)
B39 Fuel level sensor CAN 1 Exterior>CAN CAN 2 Interior CAN CAN 3 Frame CAN
The signal of the fuel level sensor (B39) is evaluated by the sensor and actuator module, chassis (SCH) (A8) and output as a CAN message on the exterior CAN (CAN 1). The central gateway (CGW) control unit (A2) takes over the messages and places it on the interior CAN (CAN 2), from where it is picked up by the anti>theft alarm system (ATA) control unit (A6) in order to monitor the fuel level.
The central gateway (CGW) control unit (A2) also places the message on the frame CAN (CAN 3), from where it is picked up by