Mercedes-Benz Actros 963 Service Manual

4.6 (136)

Electronic systems, Actros, model 963

Functional description

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Mercedes>Benz Service

Electronic systems, Actros, model 963

Technical status 09.11

Daimler AG . Technical Information and Workshop Equipment(GSP/OI)

D$70546 Stuttgart

– This printout will not be recorded by the update service. Status: 09 / 2011 –

Information and copyright

Product portfolio

You can also find comprehensive information about our complete product portfolio on our Internet portal: Link: http://aftersales.mercedes>benz.com

Questions and suggestions

If you have any questions or suggestions concerning this product, please write to us.

E>Mail:

customer.support@daimler.com

Telefax:

+49>(0)18 05/0 10>79 78

or alternatively

Address: Daimler AG GSP/OIS,

HPC R822, W002

D>70546 Stuttgart (Germany)

©2011 by Daimler AG

This document, including all its parts, is protected by copyright.

Any further processing or use requires the previous written consent of Daimler AG, Department GSP/OIS, HPC R822, W002, D>70546 Stuttgart.

This applies in particular to reproduction, distribution, alteration, translation, microfilming and storage and/or processing in electronic systems, including databases and online services.

Image no. of title image:

W00.01>1016>00

Order no. of this publication:

6517 1261 02 > HLI 000 000 02 89

09/11

 

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Preface

SN00.00>W>0001>01HA Preface

This brochure

Actros electronic systems, model 963

is intended for the technical personnel responsible for service and maintenance of Mercedes>Benz trucks.

The content of this brochure is split up into:

function descriptions

component descriptions

Description of locations of electrical connectors, sockets and ground points

All the data listed in this brochure correspond with the technical status as per September 2011.

Any changes or supplements hereto will be published in the Workshop Information System (WIS) only.

Additional documents for model 963, such as maintenance and repair instructions or wiring diagrams are also available in the Workshop Information System (WIS).

Mercedes>Benz

W‘rth plant, GSP/TTM

September 2011

i Electronic systems, Actros, model 963 > 09/2011 >

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Contents

SN00.00>W>0110H

Overview of as>built configuration and function descriptions

2.8.11

 

 

 

MODEL 963

 

 

 

Function descriptions

 

 

 

 

 

 

 

 

 

 

 

Overall network

 

Page 15

 

 

 

 

 

 

 

 

 

Overall network, function

 

Page 16

 

 

 

 

 

 

 

 

 

Maintenance system, function

 

Page 22

 

 

 

 

 

Maintenance system, overall network

 

Page 23

 

 

 

 

 

Data acquisition function

 

Page 24

 

 

 

 

 

Data storage function

 

Page 29

 

 

 

 

 

Normal mode displays function

 

Page 30

 

 

 

 

 

Reset service item function

 

Page 32

 

 

 

 

 

Forecast calculation, function

 

Page 34

 

 

 

 

 

Life cycle consumption calculation,

 

Page 35

 

function

 

 

 

 

 

 

 

 

 

 

 

Transmission automation, function

 

Page 37

 

 

 

 

 

Transmission automation, overall network

 

Page 40

 

 

 

 

 

Operation, function

 

Page 41

 

 

 

 

 

Driver information, function

 

Page 44

 

 

 

 

 

Transmission mode, function

 

Page 45

 

 

 

 

 

Shifting the transmission, function

 

Page 46

 

 

 

 

 

Controlling the clutch, function

 

Page 52

 

 

 

 

 

Countershaft brake, function

 

Page 54

 

 

 

 

 

 

 

 

 

Level control, function

 

Page 56

 

 

 

 

 

Level control, overall network

 

Page 59

 

 

 

 

 

Axle load measuring system, function

 

Page 60

 

 

 

 

 

Monitoring/control of specified level,

 

Page 62

 

function

 

 

 

 

 

 

 

Changeover from level 1 to level 2,

 

Page 64

 

function

 

 

 

 

 

 

 

Raise/lower vehicle frame manually,

 

Page 66

 

function

 

 

 

 

 

 

 

Store frame height, function

 

Page 68

 

 

 

 

 

Constant frame height when

 

Page 70

 

loading/unloading, function

 

 

 

 

 

 

 

Raise/lower lift axle, function

 

Page 73

 

 

 

 

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Contents

 

 

 

 

 

Starting>off aid, function

 

Page 76

 

 

 

 

 

Load/relieve additional axles, function

 

Page 78

 

 

 

 

 

 

 

 

 

Roll control, function

 

Page 81

 

 

 

 

 

Roll control, overall network

 

Page 84

 

 

 

 

 

 

 

 

 

Tire pressure monitor, function

 

Page 85

 

 

 

 

 

Tire pressure monitor, overall network

 

Page 86

 

 

 

 

 

Tire pressure monitor, driver information

 

Page 87

 

 

 

 

 

 

 

 

 

Electronic Brake Control, function

 

Page 88

 

 

 

 

 

Electronic Brake Control, overall network

 

Page 92

 

 

 

 

 

Brake application on front axle with

 

Page 93

 

Electronic Brake Control, function

 

 

 

 

 

 

 

Brake application on front axle without

 

Page 95

 

Electronic Brake Control, function

 

 

 

 

 

 

 

Brake application on rear axle with

 

Page 97

 

Electronic Brake Control, function

 

 

 

 

 

 

 

Brake application on rear axle without

 

Page 99

 

Electronic Brake Control, function

 

 

 

 

 

 

 

Trailer control with Electronic Brake

 

Page 101

 

Control, function

 

 

 

 

 

 

 

Trailer control without Electronic Brake

 

Page 104

 

Control, function

 

 

 

 

 

 

 

Auxiliary braking effect, function

 

Page 106

 

 

 

 

 

 

 

 

 

Electronic Stability Program, function

 

Page 108

 

 

 

 

 

Electronic Stability Program, overall

 

Page 111

 

network

 

 

 

 

 

 

 

Intervention of Electronic Stability Program

 

Page 112

 

in the event of understeer or oversteer,

 

 

 

function

 

 

 

 

 

 

 

Intervention of Electronic Stability Program

 

Page 114

 

upon risk of tipping, function

 

 

 

 

 

 

 

 

 

 

 

Compressed air supply system, function

 

Page 116

 

 

 

 

 

Compressed air supply system, overall

 

Page 122

 

network

 

 

 

 

 

 

 

 

 

 

 

Hydraulic retarder, function

 

Page 123

 

 

 

 

 

Overall network of hydraulic retarder

 

Page 129

 

 

 

 

 

 

 

 

 

Single>circuit power steering, function

 

Page 130

 

 

 

 

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Contents

 

 

 

 

 

Additional steering axle, function

 

Page 133

 

 

 

 

 

Additional steering axle, overall network

 

Page 137

 

 

 

 

 

Additional steering axle, hydraulics

 

Page 138

 

diagram

 

 

 

 

 

 

 

 

 

 

 

Driving assistance systems, function

 

Page 139

 

 

 

 

 

Driving assistance systems, overall network

 

Page 144

 

 

 

 

 

Proximity Control Assist function

 

Page 145

 

 

 

 

 

Active Brake Assist function

 

Page 149

 

 

 

 

 

Lane Keeping Assist function

 

Page 154

 

 

 

 

 

 

 

 

 

Battery sensor function

 

Page 158

 

 

 

 

 

Overall network battery sensor

 

Page 159

 

 

 

 

 

 

 

 

 

Modular switch panel function

 

Page 160

 

 

 

 

 

Overall network modular switch panel

 

Page 162

 

 

 

 

 

 

 

 

 

Instrument cluster, function

 

Page 163

 

 

 

 

 

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>

 

Page 174

 

Processing Unit (EAPU), function

 

 

 

 

 

 

 

 

 

 

 

Signaling system, function

 

Page 175

 

 

 

 

 

Overall network of signaling system

 

Page 177

 

 

 

 

 

 

 

 

 

Power windows, function

 

Page 178

 

 

 

 

 

Power windows, overall network

 

Page 181

 

 

 

 

 

 

 

 

 

Electric power sliding roof, function

 

Page 182

 

 

 

 

 

Electric power sliding rood, overall

 

Page 184

 

network

 

 

 

 

 

 

 

 

 

 

 

Central locking, function

 

Page 185

 

 

 

 

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Contents

 

 

 

 

 

Central locking, overall network

 

Page 191

 

 

 

 

 

 

 

 

 

Comfort locking system function

 

Page 192

 

 

 

 

 

Comfort locking system overall network

 

Page 198

 

 

 

 

 

 

 

 

 

Anti>theft alarm system, function

 

Page 199

 

 

 

 

 

Anti>theft alarm system, overall network

 

Page 201

 

 

 

 

 

Anti>theft alarm system, status messages

 

Page 202

 

 

 

 

 

Activate antitheft alarm system, function

 

Page 205

 

 

 

 

 

Deactivate anti>theft alarm system,

 

Page 210

 

function

 

 

 

 

 

 

 

Triggering alarm by disconnecting trailer

 

Page 214

 

or semitrailer, function

 

 

 

 

 

 

 

Alarm actuation by unlocking cab, function

 

Page 217

 

 

 

 

 

Triggerring alarm with panic switch,

 

Page 220

 

function

 

 

 

 

 

 

 

Alarm triggering with interior protection,

 

Page 223

 

function

 

 

 

 

 

 

 

Alarm triggering by steeling fuel, function

 

Page 226

 

 

 

 

 

Alarm triggering by unlocking/opening a

 

Page 229

 

door/flap, function

 

 

 

 

 

 

 

Alarm triggering by alarm siren, function

 

Page 233

 

 

 

 

 

 

 

 

 

Drive authorization system, function

 

Page 236

 

 

 

 

 

Drive authorization system overall network

 

Page 238

 

 

 

 

 

 

 

 

 

Exterior lighting, function

 

Page 239

 

 

 

 

 

Exterior lights, overall network

 

Page 241

 

 

 

 

 

Headlamp control, function

 

Page 242

 

 

 

 

 

Fog lamp actuation, function

 

Page 246

 

 

 

 

 

Rear fog lamp actuation, function

 

Page 247

 

 

 

 

 

Turn signal light actuation, function

 

Page 248

 

 

 

 

 

Brake lights actuation, function

 

Page 250

 

 

 

 

 

Backup light actuation, function

 

Page 252

 

 

 

 

 

Emergency light actuation, function

 

Page 253

 

 

 

 

 

Floodlight actuation, function

 

Page 255

 

 

 

 

 

 

 

 

 

Interior illumination, function

 

Page 257

 

 

 

 

 

Interior illumination, overall network

 

Page 259

 

 

 

 

 

Ambient lighting actuation, function

 

Page 260

 

 

 

 

 

Interior illumination actuation, function

 

Page 261

 

 

 

 

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Contents

 

Reading light actuation, function

 

Page 264

 

 

 

 

 

Night light actuation, function

 

Page 266

 

 

 

 

 

Exit lamp actuation, function

 

Page 267

 

 

 

 

 

 

 

 

 

Windshield wiper system, function

With code (F8X) Rain and light sensor

Page 268

 

 

With code (F8X) Rain and light sensor

Page 270

 

 

 

 

 

Windshield wiper system overall network

 

Page 272

 

 

 

 

 

 

 

 

 

Multifunction steering wheel, function

 

Page 273

 

 

 

 

 

Multifunction steering wheel overall

 

Page 275

 

network

 

 

 

 

 

 

 

 

 

 

 

Stationary air conditioning, function

 

Page 276

 

 

 

 

 

Stationary air conditioner, overall network

 

Page 279

 

 

 

 

 

Load cold reservoir, function

 

Page 280

 

 

 

 

 

Discharge cold reservoir function

 

Page 284

 

 

 

 

 

 

 

 

 

Automatic air conditioning, function

 

Page 286

 

 

 

 

 

Automatic climate control, overall network

 

Page 287

 

 

 

 

 

Ventilation function

 

Page 288

 

 

 

 

 

Air supply in normal operation, function

 

Page 290

 

 

 

 

 

Air supply in recirculated air mode,

 

Page 292

 

function

 

 

 

 

 

 

 

Temperature control function

 

Page 294

 

 

 

 

 

Refrigerant circuit, function

 

Page 295

 

 

 

 

 

Heater circuit function

 

Page 297

 

 

 

 

 

Temperature control during heater

 

Page 299

 

operation, function

 

 

 

 

 

 

 

Temperature control during AC operation,

 

Page 302

 

function

 

 

 

 

 

 

 

 

 

 

 

Auxiliary heater, function

 

Page 306

 

 

 

 

 

Auxiliary heater, overall network

 

Page 307

 

 

 

 

 

Heater operation, function

 

Page 308

 

 

 

 

 

Terminate heater operation, function

 

Page 309

 

 

 

 

 

Trigger heating mode, function

 

Page 315

 

 

 

 

 

Triggering the permanent heater

 

Page 316

 

operation, function

 

 

 

 

 

 

 

Triggering the preselection heater

 

Page 318

 

operation, function

 

 

 

 

 

 

 

Automatic triggering of heat mode,

 

Page 320

 

function

 

 

 

 

 

 

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Contents

 

 

 

 

 

Starting operation, function

 

Page 322

 

 

 

 

 

Combustion mode, function

 

Page 325

 

 

 

 

 

Control pause, function

 

Page 327

 

 

 

 

 

 

 

 

 

Residual heat system, function

 

Page 329

 

 

 

 

 

Residual heat system overall network

 

Page 330

 

 

 

 

 

 

 

 

 

Component descriptions

 

 

 

 

 

 

 

 

 

 

 

Instrument cluster control unit (ICUC),

A1

Page 331

 

component description

 

 

 

 

 

 

 

Central gateway control unit (CGW),

A2

Page 333

 

component description

 

 

 

 

 

 

 

Component description drive control (CPC)

A3

Page 334

 

control unit

 

 

 

 

 

 

 

Component description for engine

A4

Page 335

 

management (MCM) control unit

 

 

 

 

 

 

 

Transmission control (TCM) control unit.

A5

Page 337

 

component description

 

 

 

 

 

 

 

Anti>theft alarm system control unit (ATA),

A6

Page 338

 

component description

 

 

 

 

 

 

 

Cab signal acquisition and actuation

A7

Page 339

 

module control unit (SCA), component

 

 

 

description

 

 

 

 

 

 

 

Signal acquisition and actuation module

A8

Page 340

 

control unit, frame (SCH), component

 

 

 

description

 

 

 

 

 

 

 

Electronic Brake Control control unit (EBS),

A10b, A10c

Page 341

 

component description

 

 

 

 

 

 

 

Retarder control unit (RCM), component

A11

Page 342

 

description

 

 

 

 

 

 

 

Component description for automatic air

A12b

Page 344

 

conditioning control unit

 

 

 

 

 

 

 

Auxiliary heater control unit, component

A13

Page 346

 

description

 

 

 

 

 

 

 

Stationary air conditioner control unit,

A14

Page 347

 

component description

 

 

 

 

 

 

 

Front radar sensor (RDF) control unit,

A15

Page 348

 

component description

 

 

 

 

 

 

 

Driver door control unit (DCMD),

A16

Page 349

 

component description

 

 

 

 

 

 

 

Passenger door module control unit

A17

Page 350

 

(DCMP), component description

 

 

 

 

 

 

 

Electronic Air>Processing Unit (EAPU),

A18, 6.16, 6.17, 6.18

Page 351

 

component description

 

 

 

 

 

 

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Contents

 

Front axle axle modulator, component

A20, A20a

Page 509

 

description

 

 

 

 

 

 

 

Rear axle axle modulator, component

A21, A21a

Page 511

 

description

 

 

 

 

 

 

 

Parameterizable special module (PSM)

A22

Page 356

 

control unit component description

 

 

 

 

 

 

 

Electronic Stability Program (ESP) control

A25, A25a

Page 357

 

unit, component description

 

 

 

 

 

 

 

Level control (CLCS) control unit,

A26

Page 358

 

component description

 

 

 

 

 

 

 

Driver switch group, component

A28

Page 359

 

description

 

 

 

 

 

 

 

Front passenger switch group, component

A29

Page 360

 

description

 

 

 

 

 

 

 

FleetBoard control unit, component

A30

Page 361

 

description

 

 

 

 

 

 

 

Battery disconnect switch control unit,

A33

Page 362

 

component description

 

 

 

 

 

 

 

Additional steering axle (ASA) control unit,

A34

Page 364

 

component description

 

 

 

 

 

 

 

Tire pressure monitor (TPM) control unit,

A35

Page 365

 

component description

 

 

 

 

 

 

 

Stationary air conditioner cold reservoir,

A41

Page 366

 

component description

 

 

 

 

 

 

 

Stationary air conditioner cold reservoir

A41 b1

Page 367

 

temperature sensor, component

 

 

 

description

 

 

 

 

 

 

 

Stationary air conditioner cold reservoir

A41

Page 368

 

coolant pump, component description

 

 

 

 

 

 

 

Stationary air conditioner cold reservoir

A41 y1

Page 369

 

solenoid valve, component description

 

 

 

 

 

 

 

Modular switch panel control unit (MSF),

A43

Page 370

 

component description

 

 

 

 

 

 

 

Instrument panel switch modules,

A44, A45, A46

Page 372

 

component description

 

 

 

 

 

 

 

Switch module special equipment,

A47

Page 374

 

component description

 

 

 

 

 

 

 

Roof switch modules, component

A48, A49

Page 375

 

description

 

 

 

 

 

 

 

Bunk switch module, component

A50, A51

Page 376

 

description

 

 

 

 

 

 

 

Driver assistance system (VRDU) control

A53

Page 378

 

unit, component description

 

 

 

 

 

 

 

EATU output NOx sensor, component

A57

 

 

description

i The EATU output NOx sensor control

 

 

 

 

 

 

unit (A57) forms one unit with the EATU

 

 

 

output NOx sensor (A57 b1).

 

 

 

 

 

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Contents

 

 

 

 

 

 

Vehicles with code (M5R) Engine version

Page 379

 

 

EEV and vehicles with code (M5Y) Engine

 

 

 

version Euro V

 

 

 

Vehicles with code (M5Z) Engine version

Page 381

 

 

Euro VI

 

 

 

 

 

 

Pump module, component description

A58

Page 384

 

 

i The SCR control unit (A58) forms one

 

 

 

unit with the pump module.

 

 

 

 

 

 

Exhaust aftertreatment (ACM) control unit,

A60

 

 

component description

 

 

 

 

Vehicles with code (M5R) Engine version

Page 386

 

 

EEV and vehicles with code (M5Y) Engine

 

 

 

version Euro V

 

 

 

Vehicles with code (M5Z) Engine version

Page 388

 

 

Euro VI

 

 

 

 

 

 

EATU input NOx sensor, component

A70

 

 

description

i The EATU input NOx sensor control unit

 

 

 

 

 

 

(A70) forms one unit with the EATU input

 

 

 

NOx sensor (A70 b1).

 

 

 

Vehicles with code (M5R) Engine version

Page 390

 

 

EEV and vehicles with code (M5Y) Engine

 

 

 

version Euro V

 

 

 

Vehicles with code (M5Z) Engine version

Page 392

 

 

Euro VI

 

 

 

 

 

 

Lane Assistant camera (SPA), component

A72

Page 395

 

description

 

 

 

 

 

 

 

Auxiliary heater heating unit, component

A901

Page 396

 

description

 

 

 

 

 

 

 

Exhaust temperature sensor, component

A901 B1

Page 398

 

description

 

 

 

 

 

 

 

Component description for coolant

A901 B2

Page 399

 

temperature sensor

 

 

 

 

 

 

 

Overheating protection, component

A901 B3

Page 400

 

description

 

 

 

 

 

 

 

Glow plug, component description

A901 E

Page 401

 

 

 

 

 

Combustion air blower, component

A901 M1

Page 402

 

description

 

 

 

 

 

 

 

Auxiliary heater coolant circulation pump,

A901 M2

Page 403

 

component description

 

 

 

 

 

 

 

Brake wear sensor, component description

B1, B2

Page 404

 

 

 

 

 

Component description for the rpm sensor

B13, B14

Page 405

 

 

 

 

 

Brake value sensor, component description

B17, B17a

Page 406

 

 

 

 

 

Travel and speed sensor, component

B18

Page 408

 

description

 

 

 

 

 

 

 

Level control pressure sensor, component

B20, B21

Page 409

 

description

 

 

 

 

 

 

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Contents

 

Travel sensor, component description

B24, B25

Page 410

 

 

 

 

 

Condensation sensor, component

B26

Page 412

 

description

 

 

 

 

 

 

 

Parking brake pressure switch, component

B30

Page 413

 

description

 

 

 

 

 

 

 

Vehicle interior temperature sensor,

B32

Page 414

 

component description

 

 

 

 

 

 

 

Air conditioning pressure sensor,

B33

Page 415

 

component description

 

 

 

 

 

 

 

Alarm siren, component description

B42

Page 418

 

 

 

 

 

Interior protection, component description

B43

Page 419

 

 

 

 

 

Component description for accelerator

B44

Page 420

 

pedal sensor

 

 

 

 

 

 

 

Outside air sensor, component description

B49

Page 421

 

 

 

 

 

Front axle steering angle sensor,

B64

Page 422

 

component description

 

 

 

 

 

 

 

Additional steering axle steering angle

B65

Page 423

 

sensor, component description

 

 

 

 

 

 

 

Steering wheel angle sensor (SAS),

B66

Page 424

 

component description

 

 

 

 

 

 

 

Rain/light sensor, component description

B81

Page 428

 

 

 

 

 

Outside temperature sensor, component

B92

Page 430

 

description

 

 

 

 

 

 

 

Main shaft rpm sensor, component

B501

Page 431

 

description

 

 

 

 

 

 

 

Countershaft rpm sensor, component

B502

Page 432

 

description

 

 

 

 

 

 

 

Clutch travel sensor, component

B503

Page 433

 

description

 

 

 

 

 

 

 

Range group travel sensor, component

B504

Page 434

 

description

 

 

 

 

 

 

 

Transmission oil temperature sensor,

B505

Page 435

 

component description

 

 

 

 

 

 

 

Component description for crankshaft

B600

Page 436

 

position sensor

 

 

 

 

 

 

 

Component description for camshaft

B601

Page 437

 

position sensor

 

 

 

 

 

 

 

Stationary air conditioning air outlet

B908

Page 439

 

temperature sensor, component

 

 

 

description

 

 

 

 

 

 

 

Stationary air conditioning air outlet

B909

Page 440

 

temperature sensor, component

 

 

 

description

 

 

 

 

 

 

 

Air quality sensor, component description

B928

Page 441

 

 

 

 

 

Evaporator temperature sensor,

B929

Page 442

 

component description

 

 

 

 

 

 

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Contents

 

 

 

 

 

Air outlet temperature sensor, component

B930

Page 443

 

description

 

 

 

 

 

 

 

Dual sun sensor, component description

B931

Page 444

 

 

 

 

 

Rear lamp unit, component description

E3, E4

Page 445

 

 

 

 

 

Headlamp, component description

E5, E6

Page 446

 

 

 

 

 

Component description for battery sensor

G1a

Page 447

 

 

 

 

 

Fuel metering pump, component

M2

Page 448

 

description

 

 

 

 

 

 

 

Power window motor, component

M3

Page 449

 

description

 

 

 

 

 

 

 

Door central locking motor, component

M7

Page 450

 

description

 

 

 

 

 

 

 

Sliding roof motor, component description

M12

Page 451

 

 

 

 

 

Blower motor, component description

M13

Page 452

 

 

 

 

 

Residual heat pump, component

M20

Page 453

 

description

 

 

 

 

 

 

 

Fresh air/air recirculation flap actuator

M900

Page 454

 

motor, component description

 

 

 

 

 

 

 

Temperature control actuator motor,

M901

Page 455

 

component description

 

 

 

 

 

 

 

Defroster flap actuator motor, component

M902

Page 456

 

description

 

 

 

 

 

 

 

Stationary air conditioner blower motor,

M904

Page 457

 

component description

 

 

 

 

 

 

 

Air distribution flap actuator motor,

M905

Page 458

 

component description

 

 

 

 

 

 

 

Tachograph (TCO) component description

P1

Page 459

 

 

 

 

 

Electronic ignition lock (EIS), component

S1

Page 460

 

description

 

 

 

 

 

 

 

Level control operating unit, component

S22

Page 461

 

description

 

 

 

 

 

 

 

Right multifunction control lever,

S23

Page 463

 

component description

 

 

 

 

 

 

 

EMERGENCY OFF switch, component

S30

Page 464

 

description

 

 

 

 

 

 

 

Frame EMERGENCY OFF switch,

S31

Page 465

 

component description

 

 

 

 

 

 

 

Cab unlock switch, component description

S36, S37

Page 466

 

 

 

 

 

Maintenance flap button, component

S81

Page 467

 

description

 

 

 

 

 

 

 

Stowage box switch, component

S83

Page 468

 

description

 

 

 

 

 

 

 

Multifunction steering wheel, component

S110, S111

Page 469

 

description

 

 

 

 

 

 

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Contents

 

Bunk auxiliary heating button, component

S914, S915

Page 470

 

description

 

 

 

 

 

 

 

Bunk auxiliary heater and stationary air

S941, S942

Page 471

 

conditioning button, component

 

 

 

description

 

 

 

 

 

 

 

Bunk stationary air conditioner button,

S951, 952

Page 472

 

component description

 

 

 

 

 

 

 

Transmitter key, component description

S953

Page 473

 

 

 

 

 

Antenna, component description

W3, W6, W7, W8, W9

Page 476

 

 

 

 

 

Diagnostic socket, component description

X100.16

Page 477

 

 

 

 

 

Multifunction antenna, component

W15

Page 478

 

description

 

 

 

 

 

 

 

ABS solenoid valve, component description

Y1, Y2

Page 479

 

 

 

 

 

Proportional valve component description

Y12, Y13, Y14, Y15, Y16, Y17, Y18, Y19

Page 480

 

 

 

 

 

Stationary air conditioner solenoid valve,

Y27

Page 482

 

component description

 

 

 

 

 

 

 

Front axle level control valve unit,

Y20

Page 483

 

component description

 

 

 

 

 

 

 

Level control valve unit, 2>axle vehicles,

Y21

Page 485

 

component description

 

 

 

 

 

 

 

Level control valve unit, 3>axle vehicles,

Y21a

Page 487

 

component description

 

 

 

 

 

 

 

Refrigerant compressor magnetic clutch,

Y40

Page 489

 

component description

 

 

 

 

 

 

 

Heating shutoff valve, component

Y49

Page 490

 

description

 

 

 

 

 

 

 

Additional steering axle valve unit,

Y39

Page 491

 

component description

 

 

 

 

 

 

 

Transmission positioner, component

Y900

Page 492

 

description

 

 

 

 

 

 

 

Overflow valve with return flow,

7.01

Page 494

 

component description

 

 

 

 

 

 

 

Parking brake valve, component

14.01

Page 495

 

description

 

 

 

 

 

 

 

Pressure limiting valve with ventilation,

30.03

Page 497

 

component description

 

 

 

 

 

 

 

Coupling head for compressed air

35.02, 35.03

Page 498

 

supply/brake, component description

 

 

 

 

 

 

 

Pneumatic central clutch release bearing,

 

Page 499

 

component description

 

 

 

 

 

 

 

Range group module, component

 

Page 501

 

description

 

 

 

 

 

 

 

Wheel sensor, component description

 

Page 502

 

 

 

 

 

Trailer control valve, component

 

Page 503

 

description

 

 

 

 

 

 

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Contents

 

 

 

 

 

3/2>way valve for auxiliary braking effect,

 

Page 507

 

component description

 

 

 

 

 

 

 

Front axle axle modulator, component

 

Page 509

 

description

 

 

 

 

 

 

 

Rear axle axle modulator, component

 

Page 511

 

description

 

 

 

 

 

 

 

Retarder, component description

 

Page 514

 

 

 

 

 

Steering gear, component description

 

Page 520

 

 

 

 

 

Power steering fluid reservoir, component

 

Page 521

 

description

 

 

 

 

 

 

 

Power steering pump, component

 

Page 522

 

description

 

 

 

 

 

 

 

Additional steering axle steering cylinder,

 

Page 523

 

component description

 

 

 

 

 

 

 

Additional steering axle flow dividing

 

Page 524

 

valve, component description

 

 

 

 

 

 

 

Additional steering axle high pressure

 

Page 525

 

filter, component description

 

 

 

 

 

 

 

Heating system heat exchanger,

 

Page 526

 

component description

 

 

 

 

 

 

 

Stationary air conditioner heat exchanger,

 

Page 527

 

component description

 

 

 

 

 

 

 

Stationary air conditioner check valve,

 

Page 528

 

component description

 

 

 

 

 

 

 

Stationary air conditioner expansion valve,

 

Page 529

 

component description

 

 

 

 

 

 

 

Condenser, component description

 

Page 530

 

 

 

 

 

Evaporator, component description

 

Page 531

 

 

 

 

 

Component description for expansion

 

Page 532

 

valve

 

 

 

 

 

 

 

Fluid reservoir, component description

 

Page 533

 

 

 

 

 

A/C compressor, component description

 

Page 534

 

 

 

 

 

Auxiliary heater heat exchanger,

 

Page 535

 

component description

 

 

 

 

 

 

 

Burner insert with burner tube, component

 

Page 536

 

description

 

 

 

 

 

 

 

 

 

 

 

Location of components

 

 

 

 

 

 

 

 

 

 

 

Arrangement of cable and plug

 

Page 537

 

connections

 

 

 

 

 

 

 

Location of line connections and

 

Page 541

 

connectors, interior compartment, left

 

 

 

 

 

 

 

Location of line connections and

 

Page 541

 

connectors, interior compartment, right

 

 

 

 

 

 

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Contents

 

Location of line connections and

 

Page 542

 

connectors, instrument panel

 

 

 

 

 

 

 

Location of line connections and

 

Page 543

 

connectors, frame

 

 

 

 

 

 

 

Location of line connections and

 

Page 544

 

connectors, cab

 

 

 

 

 

 

 

Location of line connections and

 

Page 544

 

connectors, doors

 

 

 

 

 

 

 

Location of line connections and

 

Page 545

 

connectors, roof

 

 

 

 

 

 

 

Location of line connections and

 

Page 545

 

connectors, footwell, left

 

 

 

 

 

 

 

Location of line connections and

 

Page 546

 

connectors, footwell, right

 

 

 

 

 

 

 

Location of line connections and

 

Page 546

 

connectors, engine compartment

 

 

 

 

 

 

 

Location of line connections and

 

Page 547

 

connectors, electronics compartment

 

 

 

 

 

 

 

Location of line connections and

 

Page 548

 

connectors, driver seat base

 

 

 

 

 

 

 

Location of line connections and

 

Page 548

 

connectors, front passenger seat base

 

 

 

 

 

 

 

Location of sockets

 

Page 549

 

 

 

 

 

Location of electrical sockets

 

Page 550

 

 

 

 

 

Location of ground points

 

Page 551

 

 

 

 

 

Location of left engine compartment

 

Page 552

 

ground points

 

 

 

 

 

 

 

Location of right engine compartment

 

Page 552

 

ground points

 

 

 

 

 

 

 

Location of left interior compartment

 

Page 552

 

ground points

 

 

 

 

 

 

 

Location of ground points > frame

 

Page 553

 

 

 

 

 

Location of ground points > instrument

 

Page 553

 

panel

 

 

 

 

 

 

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Functions

SN00.19>W>0001>02H

Complete networking

 

 

 

 

 

 

 

Illustrated on model 963.4

 

 

 

 

 

 

 

 

A1

Instrument cluster (ICUC) control

 

 

 

 

unit

 

 

 

 

A2

Central gateway control unit

 

 

 

 

(CGW)

 

 

 

 

A2 a1

Central data memory (CDS)

 

 

 

A2 a2

Communications interface (COM)

 

 

 

 

control unit

 

 

 

 

A2 a3

Maintenance system (MS) control

 

 

 

 

unit

 

 

 

 

A3

Drive control (CPC) control unit

 

 

 

A4

Engine management control unit

 

 

 

 

(MCM)

 

 

 

 

A5

Transmission control (TCM)

 

 

 

 

control unit

 

 

 

 

A6

Anti>theft alarm system (ATA)

 

 

 

 

control unit

 

 

 

 

A7

Cab signal acquisition and

 

 

 

 

actuation module control unit

 

 

 

 

(SCA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W00.19>1065>76

A8

Frame signal acquisition and

A17

Front passenger door module

A30

FleetBoard“ control unit

 

actuation module control unit

 

(DCMP) control unit

A35

Tire pressure monitor (TPM)

 

(SCH)

A18

Electronic Air Processing Unit

 

control unit

A9

Truck Control Center (TCC)

 

(EAPU) control unit

A40

Supplemental restraint system

A10

Antilock brake system (ABS)

A20

Front axle axle modulator

 

(SRS) control unit

 

control unit, 4>channel

 

(Wabco)

A43

Modular switch panel (MSF)

A10b

Electronic brake control (EBS)

A20a

Front axle axle modulator (Knorr)

 

control unit

 

control unit (Wabco)

A21

Rear axle axle modulator

A53

Driver assistance system (VRDU)

A10c

Electronic brake control (EBS)

 

(Wabco)

 

control unit

 

control unit (Knorr)

A21a

Rear axle axle modulator (Knorr)

A57

EATU output NOx sensor control

A11

Retarder control (RCM) control

A22

Parameterizable special module

 

unit

 

unit

 

(PSM) control unit

A58

SCR control unit

A12b

Heating, ventilation and air

A25

Electronic Stability Program

A60

Exhaust aftertreatment (ACM)

 

conditioning control unit (HVAC)

 

(ESP“) control unit (Wabco)

 

control unit

A13

Truck auxiliary heater (ITH)

A25a

Electronic Stability Program

A70

EATU input NOx sensor control

 

control unit

 

(ESP“) control unit (Knorr)

 

unit

A14

Stationary air conditioning (IAC)

A26

Level control (CLCS) control unit

A72

Lane Assistant camera

 

control unit

 

 

B66

Steering wheel angle sensor

A15

Front radar sensor (RDF) control

 

 

 

(SAS)

 

unit

 

 

P1

Tachograph (TCO)

A16

Driver door module (DCMD)

 

 

S1

Electronic ignition lock (EIS)

 

control unit

 

 

 

 

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Mercedes-Benz Actros 963 Service Manual

Functions

GF00.19>W>0004H

Overall network, function

2.8.11

 

 

 

MODEL 963

 

 

 

 

 

W00.19>1079>79

A1

Instrument cluster (ICUC) control

A11

Retarder control (RCM) control unit

A33

Battery disconnect switch control

 

unit

A12b

Heating, ventilation and air

 

unit (BESO)

A2

Central gateway control unit (CGW)

 

conditioning control unit (HVAC)

A34

Additional steering axle (ASA)

A2 a1

Central data memory (CDS)

A13

Truck auxiliary heater (ITH) control

 

control unit

A2 a2

Communications interface (COM)

 

unit

A35

Tire pressure monitor (TPM) control

 

control unit

A14

Stationary air conditioning (IAC)

 

unit

A2 a3

Maintenance system (MS) control

 

control unit

A40

Supplemental restraint system (SRS)

 

unit

A15

Front radar sensor (RDF) control

 

control unit

A3

Drive control (CPC) control unit

 

unit

A43

Modular switch panel (MSF) control

A4

Engine management control unit

A16

Driver door module (DCMD) control

 

unit

 

(MCM)

 

unit

A53

Driver assistance system (VRDU)

A5

Transmission control (TCM) control

A17

Front passenger door module

 

control unit

 

unit

 

(DCMP) control unit

A54

Lower radiator shutters controller

A6

Antitheft alarm system (ATA)

A18

Electronic Air Processing Unit

 

unit

 

control unit

 

(EAPU) control unit

A55

Upper radiator shutters controller

A7

Cab signal acquisition and

A20

Front axle axle modulator (Wabco)

 

unit

 

actuation module control unit

A20a

Front axle axle modulator (Knorr)

A57

EATU output NOx sensor control

 

(SCA)

A21

Rear axle axle modulator (Wabco)

 

unit

A8

Frame signal acquisition and

A21a

Rear axle axle modulator (Knorr)

A58

SCR control unit

 

actuation module control unit

A22

Parameterizable special module

A60

Exhaust aftertreatment (ACM)

 

(SCH)

 

(PSM) control unit

 

control unit

A9

Truck Control Center (TCC)

A25

Electronic Stability Program (ESP“)

A70

EATU input NOx sensor control unit

A10

Antilock brake system (ABS) control

 

control unit (Wabco)

A72

Lane Assistant camera

 

unit, 4>channel

A25a

Electronic Stability Program (ESP“)

 

 

A10b

Electronic Brake Control (EBS)

 

control unit (Knorr)

B42

Alarm siren

 

control unit (Wabco)

A26

Level control (CLCS) control unit

B43

Interior protection sensor

A10c

Electronic Brake Control (EBS)

A28

Driver switch group

B66

Steering wheel angle sensor (SAS)

 

control unit (Knorr)

A30

FleetBoard“ control unit

B81

Rain and light sensor (RLS)

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Functions

CAN 1

Exterior>CAN

LIN 3

Right multifunction control lever>

X100.16

Diagnostic socket

CAN 2

Interior CAN

 

LIN

X102.15

Trailer socket , 15>pin

CAN 3

Frame CAN

LIN 4

Left multifunction control lever LIN

X103.7

ABS trailer socket 7>pin

CAN 4

Drive train CAN

LIN 5

Radiator shutters LIN

X167.12

Fleet management system

CAN 5

Climate control CAN

LIN 6

LIN SCA/SCH redundancy

 

electrical connector

CAN 6a

Front axle brakes CAN

LIN 7

Button group LIN

X910

Electrical connector for body

CAN 6b

Rear axle brakes CAN

LIN 8

Level control LIN

 

manufacturers

CAN 6c

Redundant brakes CAN

LIN 9

Driver switch panel LIN

XR>E1H

CAN>H exterior cable weld point 1

CAN 6d

ESP“ brakes CAN

LIN 10

EAPU>LIN

XR>E1L

CAN>L exterior cable weld point 1

CAN 7

Trailer CAN (PSM)

LIN 11

ATA>LIN

XR>E1M

CAN>ground exterior cable weld

CAN 8

Body manufacturer CAN (PSM)

P1

Tachograph (TCO)

 

point 1

CAN 9

Telematics CAN

S1

Electronic ignition lock (EIS)

Z1

Cab instrument panel CAN bus star

CAN 10

Diagnostic CAN

S20

Left multifunction control lever

 

point

CAN 11

Trailer CAN (EBS)

S22

Level control operating unit

Z3

Frame CAN bus star point

CAN 12

Radar CAN

S23

Right multifunction control lever

Z4

Drive CAN bus star point

CAN 13

NOx>CAN

S110

Left multifunction steering wheel

 

 

G1a

Battery sensor (IBS)

 

button group

 

 

LIN 1

Rain/light sensor LIN

S111

Right multifunction steering wheel

ASIC

ASIC data bus (Application System

LIN 2

Battery sensor LIN

 

button group

 

Integrated Circuit)

1General

The increase in electronic systems in the new Actros means that more and more signals now have to be made available across all the systems. This primarily has an impact on the networking, which has also gained in complexity. Alongside the familiar CAN and ASIC data bus systems the LIN data bus is now increasingly being used. The new Actros alone has 11 LIN data buses, which connect the various control units, switches or other electronic components to each other. The number of CAN data buses by contrast has only risen slightly.

2CAN data bus system

The CAN data bus system enables information to be exchanged quickly and reliably between control units over only a few lines. The information is sent or received successively (serial). The exchange is bidirectional, i.e. each control unit operates as both a transmitter and a receiver.

2.1 Transfer rates

In the new Actros up to 13 different CAN data buses are used. The majority of these CAN data buses have a transfer rate of >250 kBaud and this classes them as high>speed CAN data buses. The reasons for the increase in high>speed CAN data buses are:

Increase in data rate (number of messages that are sent)

Almost identical manufacturing costs as for low>speed CAN data buses

Greater use of LIN data bus in non>critical safety areas

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Shortening of flash or parameterization times, in particular through increase in transfer rate for diagnostic CAN (CAN 10)

The following CAN data buses have a transfer rate of 500 kBaud:

Exterior CAN (CAN 1)

Interior CAN (CAN 2)

Frame CAN (CAN 3)

Climate control CAN (CAN 5)

Front axle brake CAN (CAN 6a)

Rear axle brake CAN (CAN 6b)

Redundancy brake CAN (CAN 6c)

Brake CAN ESP(CAN 6d)

Diagnostic CAN (CAN 10)

Radar CAN (CAN 12)

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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Functions

The transfer rate of the drive train CAN (CAN 4) was increased to 667 kBaud, because the high number of messages had significantly increased the bus operating rate. If the data rate was not increased, then there is the risk that some messages with low priority could no longer be sent due to the bus operating rate.

To ensure that freight forwarders, for example for fleet management, can continue to call up specific information on vehicle location, current speed, etc. the transfer rate of the telematics CAN (CAN 9) has been retained at 250 kBaud.

The transfer rates have also been retained on the trailer CAN (PSM) (CAN 7), the body manufacturer CAN (PSM) (CAN 8) and the trailer CAN (EBS) (CAN 11). They are 125 kBaud, whereby they are still classified as low>speed CAN data buses.

The transfer rate for the NOx>CAN (CAN 13) has not been changed either and is > as before > 250 kBaud.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

2.3CAN neutral points and bus terminating resistors

Because of the high transfer rates on high>speed CAN data buses, there may be some reflections in the lines. Bus termination resistors are used to avoid reflections that would lead to the falsification of actual information. The characteristic impedance of the electrical line is important for the bus termination resistor. The total bus terminating resistor on a high>speed CAN data bus is 60 ].

In the neutral points for the cab instrument panel CAN bus (Z1) and frame CAN bus (Z3) the bus terminating resistors are integrated into the neutral points. The drive CAN bus neutral point (Z4) only includes those ferrite elements that are also installed in the neutral points for interference suppression of

high>frequency interference pulses.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

3LIN data bus

The LIN data bus is an inexpensive serial subbus, which replaces the CAN data bus in the area of uncritical data transfer. The voltage supply for the LIN data bus is 12 V. This is realized internally in the control units through voltage dividers. Signals are transmitted through a single>wire line. The max. data rate is 20 kBaud. Communication refers to ID>based communication. All subscribers connected to the LIN data bus receive the message, but only one subscriber responds to it.

A LIN data bus subscriber never sends information by itself, as is the case, for example with a CAN data bus subscriber. Subscribers of the LIN data bus only ever respond to a query.

2.2Gateways

To compensate for the different transfer speeds, some control units also act as a gateway:

The central gateway control unit (CGW) (A2) routes the respective messages from the exterior, interior, frame, telematics and diagnostic CAN (CAN 1, 2, 3, 9 and 10).

The modular switch panel (MSF) control unit (A43) acts as a gateway between the interior CAN (CAN 2), the ASIC data bus (ASIC) and the three LIN data buses to the button groups on the multifunction steering wheel, the left multifunction control lever and the level control operating unit.

The Electronic Brake Control (EBS) control unit (A10b) or (A10c), depending on the version, sends the messages from the frame CAN (CAN 3) to the front axle brake CAN (CAN 6a), the rear axle brake CAN (CAN 6b), the brake CAN ESP(CAN 6d) as well as, where applicable, the trailer CAN (EBS) (CAN 11) and vice versa.

The drive control (CPC) control unit (A3) acts as an interface between the frame CAN (CAN 3) and the drive train CAN

(CAN 4).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

The bus terminator on the exterior CAN (CAN 1) is realized by using bus terminating resistors within the central gateway control unit (CGW) (A2) and the Electronic Air>Processing Unit (EAPU) control unit (A18). Located in both control units is a 120 ] resistor each. The parallel connection then yields a total bus terminating resistance of 60 ].

In the diagnostic CAN (CAN 10) the bus terminator is realized by a 60 ] resistor in the central gateway control unit (CGW) (A2).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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Functions

4ASIC data bus system

The previously familiar ASIC data bus system is also used in the new Actros.

The ASIC data bus (ASIC) belongs to the so>called subbuses. In contrast to conventional switches which switch via their own contacts and are connected to their components via separate electrical lines (e.g. motors, solenoid valves, switch inputs, lighting devices), the ASIC data bus performs these tasks.

The electronics installed in the ASIC signal switches notifies the modular switch panel (MSF) control unit (A43) the following via the ASIC data bus (ASIC):

fswitch position (open, closed, operated, not operated)

fFunctionality (normally closed contact, normally open contact, changeover contact)

fSystem affiliation (e.g. headlamp cleaning system button,

power take>off 1 button, etc.)

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

5Virtual control units

Each ASIC signal switch is connected over three contacts (pins) to the ASIC data bus (ASIC), and it is evaluated by the modular switch panel (MSF) control unit (A43). It is thus possible to install each ASIC signal switch at any arbitrary point on the individual switch modules.

For currents up to a maximum of 20 A there continues to be load switches which as before switch via their own contacts and are connected to their components through electrical lines.

These load switches are only connected to the switch panel via the ASIC contacts for separate background lighting.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

6Safety strategy

Virtual control units are not equipped with their own housing. They are integrated into the hardware and software of other control units. In Star Diagnosis and the instrument cluster control unit (ICUC) (A1) they appear as independent control units. Among the virtual control units are the central data memory (CDS) (A2 a1), the communications interface (COM) control unit (A2 a2) and the maintenance system (MS) control unit (A2 a3), which are all integrated into the central gateway control unit (CGW) (A2).

With the aid of the central data memory (CDS) (A2 a1) the parameters for the electronic control units can be reset to manufacturer default settings.

Several control units have a redundant connection over LIN or CAN data buses. The redundant connection serves as an emergency communication, if the actual CAN connection malfunctions. The use of redundant LIN or CAN data buses is dependent on the safety relevance of each system.

The service brake system, for example has a redundant CAN data bus connection between the axle modulators.

LIN data buses serve as redundancies between the sensor and actuator module, cab (SCA) control unit (A7) and the sensor and actuator module, chassis (SCH) control unit (A8) as well as between the instrument cluster control unit (ICUC) (A1) and the Electronic Air>Processing Unit (EAPU) control unit (A18).

 

Instrument cluster control unit (ICUC),

A1

Page 331

 

component description

 

 

 

 

 

 

 

Central gateway control unit (CGW),

A2

Page 333

 

component description

 

 

 

 

 

 

 

Component description drive control (CPC)

A3

Page 334

 

control unit

 

 

 

 

 

 

 

Component description for engine

A4

Page 335

 

management (MCM) control unit

 

 

 

 

 

 

 

Transmission control (TCM) control unit.

A5

Page 337

 

component description

 

 

 

 

 

 

 

Antitheft alarm system control unit (ATA),

A6

Page 338

 

component description

 

 

 

 

 

 

 

Cab signal acquisition and actuation

A7

Page 339

 

module control unit (SCA), component

 

 

 

description

 

 

 

 

 

 

 

Signal acquisition and actuation module

A8

Page 340

 

control unit, frame (SCH), component

 

 

 

description

 

 

 

 

 

 

 

Electronic Brake Control (EBS) control unit,

A10b, A10c

Page 341

 

component description

 

 

 

 

 

 

 

Retarder control unit (RCM), component

A11

Page 342

 

description

i Only in vehicles with code (B3H)

 

 

 

 

 

 

Secondary water retarder.

 

 

 

 

 

 

 

 

 

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Functions

 

Component description for automatic air

A12b

Page 344

 

conditioning control unit

 

 

 

 

 

 

 

Auxiliary heater control unit, component

A13

Page 346

 

description

i Only in vehicles with code (D6M) Cab

 

 

 

 

 

 

auxiliary water heater or with code (D6N)

 

 

 

Cab and engine auxiliary water heater.

 

 

 

 

 

 

Stationary air conditioner control unit,

A14

Page 347

 

component description

 

 

 

 

 

 

 

Front radar sensor (RDF) control unit,

A15

Page 348

 

component description

 

 

 

 

 

 

 

Driver door control unit (DCMD),

A16

Page 349

 

component description

 

 

 

 

 

 

 

Passenger door module control unit

A17

Page 350

 

(DCMP), component description

 

 

 

 

 

 

 

Electronic Air>Processing Unit (EAPU),

A18

Page 351

 

component description

i The Electronic Air>Processing Unit

 

 

 

 

 

 

(EAPU) control unit (A18) forms a module

 

 

 

together with the Electronic Air>Processing

 

 

 

Unit (EAPU).

 

 

 

 

 

 

Front axle axle modulator, component

A20, A20a

Page 509

 

description

 

 

 

 

 

 

 

Rear axle axle modulator, component

A21, A21a

Page 511

 

description

 

 

 

 

 

 

 

Parameterizable special module (PSM)

A22

Page 356

 

control unit component description

 

 

 

 

 

 

 

Electronic Stability Program (ESP) control

A25, A25a

Page 357

 

unit, component description

 

 

 

 

 

 

 

Level control (CLCS) control unit,

A26

Page 358

 

component description

 

 

 

 

 

 

 

FleetBoard control unit, component

A30

Page 361

 

description

 

 

 

 

 

 

 

Battery disconnect switch control unit,

A33

Page 362

 

component description

i Only in vehicles with one of the

 

 

 

 

 

 

following codes:

 

 

 

• Code (E5T) ADR model class EX/II,

 

 

 

including AT

 

 

 

• Code (E5U) ADR model class EX/III,

 

 

 

including EX/II and AT

 

 

 

• Code (E5V) ADR model class FL,

 

 

 

including EX/II, EX/III and AT

 

 

 

• Code (E5X) ADR model class AT

 

 

 

• Code (E5Z) Accessories, ADR

 

 

 

• Code (E9D) Preinstallation, for bipolar

 

 

 

battery circuit breaker

 

 

 

• Code (E9E) ADR preinstallation, without

 

 

 

chassis shielding

 

 

 

 

 

 

Additional steering axle (ASA) control unit,

A34

Page 364

 

component description

 

 

 

 

 

 

 

Tire pressure monitor (TPM) control unit,

A35

Page 365

 

component description

 

 

 

 

 

 

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Functions

 

 

 

 

 

Modular switch panel control unit (MSF),

A43

Page 370

 

component description

 

 

 

 

 

 

 

Driver assistance system control unit

A53

Page 378

 

(VRDU), component description

 

 

 

 

 

 

 

EATU output NOx sensor, component

A57

 

 

description

i The EATU output NOx sensor control

 

 

 

 

 

 

unit (A57) together with the EATU output

 

 

 

NOx sensor (A57 b1) forms a unit.

 

 

 

Vehicles with code (M5R) EEV engine

Page 379

 

 

version and vehicles with code (M5Y) Euro

 

 

 

V engine version

 

 

 

Vehicles with code (M5Z) Euro VI engine

Page 381

 

 

version

 

 

 

 

 

 

Pump module, component description

A58

Page 384

 

 

i The SCR control unit (A58) together

 

 

 

with the pump module forms a unit.

 

 

 

 

 

 

Exhaust aftertreatment (ACM) control unit,

A60

 

 

component description

 

 

 

 

Vehicles with code (M5R) EEV engine

Page 386

 

 

version and vehicles with code (M5Y) Euro

 

 

 

V engine version

 

 

 

Vehicles with code (M5Z) Euro VI engine

Page 388

 

 

version

 

 

 

 

 

 

EATU input NOx sensor, component

A70

 

 

description

i The EATU input NOx sensor control unit

 

 

 

 

 

 

(A70) together with the EATU input NOx

 

 

 

sensor (A70 b1) forms a unit.

 

 

 

Vehicles with code (M5R) EEV engine

Page 390

 

 

version and vehicles with code (M5Y) Euro

 

 

 

V engine version

 

 

 

Vehicles with code (M5Z) Euro VI engine

Page 392

 

 

version

 

 

 

 

 

 

Lane Assistant (SPA) camera, component

A72

Page 395

 

description

 

 

 

 

 

 

 

Steering wheel angle sensor (SAS),

B66

Page 424

 

component description

 

 

 

 

 

 

 

Tachograph (TCO) component description

P1

Page 459

 

 

 

 

 

Electronic ignition lock (EIS), component

S1

Page 460

 

description

 

 

 

 

 

 

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Functions

GF00.20>W>0005H

Maintenance system, function

2.8.11

 

 

 

MODEL 963

1CAN messages

2"Maintenance" menu

A1

Instrument cluster (ICUC) control

 

unit

A1 p1

Multifunction display

A2

Central gateway control unit

 

(CGW)

A43

Modular switch panel (MSF)

 

control unit

CAN 2

Interior CAN

CAN 3

Frame CAN

CAN 10

Diagnostic CAN

LIN 7

Button group LIN

S110

Left multifunction steering wheel

 

button group

 

 

 

W00.20>1076>76

S111 Right multifunction steering wheel

Z1 Cab instrument panel CAN bus star

Z3

Frame CAN bus star point

button group

point

X100.16

Diagnostic socket

General information

The maintenance system (WS):

fIs a software which is integrated as a virtual control unit into the central gateway control unit (CGW) (A2),

frecords all the required measurement data as CAN messages

(1) using the CAN data bus system and

fcalculates the load>dependent service life and forecast data for each maintenance item in order to determine the service dates.

i Load>dependent forecasting is used to carry out the following:

fIndividual determination of the service dates for each maintenance item and they can be called up in the "Maintenance" (2) menu of the instrument cluster control unit (ICUC) (A1).

fDisplay of pending maintenance items as a message in the multifunction display (A1 p1) when the ignition is switched on.

The menu is operated using the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group (S111).

Maintenance information is shown in the multifunction display (A1 p1) of the instrument cluster control unit (ICUC) (A1). The instrument cluster control unit (ICUC) (A1) acts as a display unit.

A maintenance item is reset using the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group (S111) or with the aid of Star Diagnosis through the diagnostic socket (X100.16).

 

Maintenance system overall network

 

Page 23

 

 

 

 

 

Data acquisition function

 

Page 24

 

 

 

 

 

Data storage function

 

Page 29

 

 

 

 

 

Life cycle consumption calculation,

 

Page 35

 

function

 

 

 

 

 

 

 

Forecast calculation, function

 

Page 34

 

 

 

 

 

Normal mode displays function

 

Page 30

 

 

 

 

 

Reset service item function

 

Page 32

 

 

 

 

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Functions

GF00.20>W>0005>02H Maintenance system overall network

 

 

 

 

 

W00.20>1079>79

A1

Instrument cluster (ICUC) control

A11

Retarder control (RCM) control

LIN 6

LIN SCA/SCH redundancy

 

unit

 

unit

LIN 7

Button group LIN

A2

Central gateway control unit (CGW)

A18

Electronic Air Processing Unit

LIN 10

EAPU>LIN

A2a3

Maintenance system (MS) control

 

(EAPU) control unit

P1

Tachograph (TCO)

 

unit

A43

Modular switch panel (MSF)

S110

Left multifunction

A3

Drive control (CPC) control unit

 

control unit

 

steering wheel button group

A4

Engine management control unit

A60

Exhaust aftertreatment (ACM)

S111

Right multifunction

 

(MCM)

 

control unit

 

steering wheel button group

A5

Transmission control (TCM) control

CAN 1

Exterior>CAN

X100.16

Diagnostic socket

 

unit

CAN 2

Interior CAN

Z1

Cab instrument panel CAN bus

A7

Cab signal acquisition and

CAN 3

Frame CAN

 

star point

 

actuation module control unit

CAN 4

Drive train CAN

Z3

Frame CAN bus star point

 

(SCA)

CAN 10

Diagnostic CAN

Z4

Drive CAN bus star point

A8

Frame signal acquisition and

 

 

 

 

 

actuation module control unit

 

 

 

 

 

(SCH)

 

 

 

 

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Functions

GF00.20>W>3000H

Data acquisition function

2.8.11

 

 

 

MODEL 963

A1 Instrument cluster (ICUC) control unit

A1p1 Multifunction display

A2 Central gateway control unit (CGW)

A3 Drive control (CPC) control unit

A4 Engine management control unit (MCM)

A5 Transmission control (TCM) control unit

A7 Cab signal acquisition and actuation module control unit (SCA)

A8 Frame signal acquisition and actuation module control unit (SCH)

A11 Retarder control unit (RCM) (in vehicle with code (B3H) Secondary water retarder)

B48 Air filter sensor

B75 1st front axle temperature sensor

B77 1st rear axle temperature sensor

B92 Outside temperature sensor

B505 Transmission oil temperature sensor

B600 Crankshaft position sensor

B605 Engine oil fill level sensor

B933 Coolant temperature sensor (in vehicles with code (B3H) Secondary water retarder)

A18 Electronic Air Processing Unit (EAPU) control unit

A43 Modular switch panel (MSF) control unit

A60 Exhaust aftertreatment (ACM) control unit (in vehicles with code (M5Z) Euro VI engine version)

B1 Left 1st front axle brake wear sensor

B2 Right 1st front axle brake wear sensor

B3 Left 2nd front axle brake wear sensor

B4 Right 2nd front axle brake wear sensor

CAN 1

Exterior>CAN

CAN 2

Interior CAN

CAN 3

Frame CAN

CAN 4

Drive train CAN

CAN 10

Diagnostic CAN

LIN 6

LIN SCA/SCH redundancy

LIN 7

Button group LIN

LIN 10

EAPU>LIN

P1

Tachograph (TCO)

W00.20>1078>79

B7 Left 1st rear axle brake wear sensor

B8 Right 1st rear axle brake wear sensor

B9 Left 2nd rear axle brake wear sensor

B10 Right 2nd rear axle brake wear sensor

B18 Travel and speed sensor

B26 Condensation sensor

B37 Exhaust pressure sensor upstream of diesel oxidation catalytic converter (in vehicles with code (M5Z) Euro VI engine version)

B38 Exhaust pressure sensor downstream of diesel particulate filter (in vehicles with code (M5Z) Euro VI engine version)

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

X100.16

Diagnostic socket

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Functions

General information

The recording of data function enables the maintenance system (WS) to receive two different types of input factors for calculating the load>specific maintenance intervals:

fBasic data, which are determined unchangeable at first in the form of a parameterization and

fmeasured values, which are sensed continuously.

Thus, two functions are differentiated:

fAcquiring the basic data

fAcquiring the measured values

Acquiring the basic data

The maintenance system (WS) requires certain basic data (parameters), which:

fare a prerequisite for the general function and

fwhich are used to adapt the maintenance system (WS) to the vehicle and the operating fluids.

The basic data are acquired in the form of the following parameterizations:

fBasic parameterization

fVehicle>specific parameterization

fSubsequent parameterization

fParameterization of operating fluids

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Subsequent parameterization

Subsequent parameterization:

fmakes it possible to change parameters, which are connected to constructional vehicle changes for instance or special customer's requests, such as the "time>based servicing scheme grid" parameter and

fmay only be carried out in workshops authorized by Mercedes>Benz.

i Querying and operation are conducted using the left multifunction steering wheel button group (S110) and right multifunction steering wheel button group (S111) or using Star Diagnosis through the diagnostic socket (X100.16).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Basic parameterization

The basic parameterization (base parameterization):

fincludes the pre>assignment of certain parameters with values and is a prerequisite for the function of the maintenance system (WS) and

fis made at the manufacturer of the central gateway control unit (CGW) (A2).

Vehicle>specific parameterization

The vehicle>specific parameterization:

fis used to adapt the maintenance system (WS) to the vehicle model and the vehicle equipment, or to the special features of the individual maintenance items, such as

their cut>in or cutout and

fis carried out in the Mercedes>Benz production plant.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Parameterization of operating fluids

Parameterization of operating fluids:

fmakes it possible to change parameters with regard to the properties of fuels and lubricants, which can change during the operation of the vehicle, such as engine oil quality, engine oil viscosity, transmission oil quality, or sulfur content of the fuel and

fmay also be carried out by other workshops.

i The parameters can be checked and changed if necessary through the "Fuels and Lubricants" submenu in the "Adjustments" menu of the menu system. Querying and operation are conducted using the left multifunction steering wheel button group (S110) and right multifunction steering wheel button group (S111) or using Star Diagnosis through the

diagnostic socket (X100.16).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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Functions

Acquiring the measured values

The measurement values are recorded using different sensors, which are connected to the system>specific control units or the locally best suited modules, e.g. on the sensor and actuator module, cab (SCA) control unit (A7).

The analog measured values are turned into corresponding CAN messages by the particular control units or modules; these CAN messages are transmitted with the aid of the CAN data bus system to the maintenance system (WS).

The maintenance system (WS):

fprocesses the recorded measured values converting them to input data for the life cycle consumption and forecast calculation, whereby the quality of processed measured values is of major significance in terms of the forecast calculation result and

fmonitors the acquired measured values for errors, exceeding limit values, and plausibility.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Transmission (TCM) control unit (A5)

The transmission control unit (TCM) (A5):

facquires the measured "transmission oil temperature" value from the transmission oil temperature sensor (B505) and

fsends a corresponding CAN message over the drive train CAN (CAN 4) and over the drive train CAN bus neutral point (Z4) to the drive control (CPC) control unit (A3) and from there over the frame CAN (CAN 3) and over the frame CAN bus neutral point (Z3) to the central gateway control unit (CGW) (A2).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Drive control (CPC) control unit (A3)

The drive control (CPC) control unit (A3):

facquires the measured value for air filter contamination by the air filter sensor (B48) and

fsends a corresponding CAN message over the frame CAN (CAN 3) and over the frame CAN bus neutral point (Z3) to the central gateway control unit (CGW) (A2).

Engine management (MCM) control unit (A4)

The engine management (MCM) control unit (A4):

facquires the measured "crankshaft rpm" value from the crankshaft position sensor (B600),

facquires the measured "engine oil temperature" value from the engine oil fill level sensor (B605),

fsends corresponding CAN messages over the drive train CAN (CAN 4) and over the drive train CAN bus neutral point (Z4) to the drive control (CPC) control unit (A3) and from there over the frame CAN (CAN 3) and over the frame CAN bus neutral point (Z3) to the central gateway control unit (CGW)

(A2).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Retarder control (RCM) control unit (A11)

i Only in vehicles with code (B3H) Secondary water retarder.

The retarder control unit (RCM) (A11):

facquires the measured "coolant temperature" value from the coolant temperature sensor (B933) and

fsends a corresponding CAN message over the drive train CAN (CAN 4) and over the drive train CAN bus neutral point (Z4) to the drive control (CPC) control unit (A3) and from there over the frame CAN (CAN 3) and over the frame CAN bus neutral point (Z3) to the central gateway control unit

(CGW) (A2).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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Functions

Cab signal acquisition and actuation module (SCA) control unit (A7)

The sensor and actuator module, cab (SCA) control unit (A7):

facquires the measured "brake wear" value at the installed front axles from the following brake wear sensors:

fLeft 1st front axle brake wear sensor (B1)

fRight 1st front axle brake wear sensor (B2)

fLeft 2nd front axle brake wear sensor (B3)

fRight 2nd front axle brake wear sensor (B4)

facquires the measured "front axle oil temperature" value from the front axle temperature sensor

(B75) at the first front axle,

facquires the measured "outside temperature" value from the outside temperature sensor (B92) and

fsends a corresponding CAN message over the interior CAN (CAN 2) and over the cab instrument panel CAN bus neutral point (Z1) to the central gateway control unit (CGW) (A2).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Electronic Air>Processing Unit (EAPU) control unit (A18)

i Only in vehicles with code (B1C, B1D, B1E) Electronic Air> Processing Unit (EAPU).

The Electronic Air>Processing Unit (EAPU) control unit (A18)

frecords the measured "condensation water level" value from the condensation sensor (B26),

fdelivers the "reservoir pressure for brake circuit 1 and 2" measurement value from the integrated reservoir pressure sensors for brake circuit

1 and 2,

fsends corresponding CAN messages over the exterior CAN (CAN 1) to the central gateway control unit (CGW) (A2),

fsends corresponding LIN messages over the redundant EAPU>LIN (LIN 10) to the instrument cluster control unit (ICUC) (A1).

Sensor and actuator module, chassis (SCH) control unit (A8)

The sensor and actuator module, chassis (SCH) control unit (A8):

facquires the measured "brake wear" value at the installed rear axles from the following brake wear sensors:

>Left 1st rear axle brake wear sensor (B7)

>Right 1st rear axle brake wear sensor (B8)

>Left 2nd rear axle brake wear sensor (B9)

>Right 2nd rear axle brake wear sensor (B10)

frecords the "rear axle oil temperature" value at the first rear axle from the 1st rear axle temperature sensor (B77),

fsends corresponding CAN messages over the exterior CAN (CAN 1) to the central gateway control unit (CGW) (A2).

i In the event of any data transfer interference between the central gateway control unit (CGW) (A2) and the sensor and actuator module, cab (SCA) control unit (A7) or the sensor and actuator module, chassis (SCH) control unit (A8) the data can be sent as LIN messages redundantly over the redundancy LIN

SCA/SCH (LIN 6).

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Exhaust aftertreatment (ACM) control unit (A60)

i Only for vehicles with code (M5Z) Engine version Euro VI.

The exhaust aftertreatment (ACM) control unit (A60)

facquires the exhaust pressure measurement values on the diesel oxidation catalytic converter/diesel particulate filter from the following pressure sensors:

>exhaust pressure sensor upstream of diesel oxidation catalytic converter (B37)

>exhaust pressure sensor downstream of diesel particulate filter (B38)

fsends a corresponding CAN message over the drive train CAN (CAN 4) and over the drive train CAN bus neutral point (Z4) to the drive control (CPC) control unit (A3) and from there over the frame CAN (CAN 3) and over the frame CAN bus neutral point (Z3) to the central gateway control unit (CGW) (A2).

 

Instrument cluster control unit (ICUC),

A1

Page 331

 

component description

 

 

 

 

 

 

 

Central gateway control unit (CGW),

A2

Page 333

 

component description

 

 

 

 

 

 

 

Component description drive control (CPC)

A3

Page 334

 

control unit

 

 

 

 

 

 

 

Component description for engine

A4

Page 335

 

management (MCM) control unit

 

 

 

 

 

 

 

Transmission control (TCM) control unit.

A5

Page 337

 

component description

 

 

 

 

 

 

 

Cab signal acquisition and actuation

A7

Page 339

 

module control unit (SCA), component

 

 

 

description

 

 

 

 

 

 

 

Signal acquisition and actuation module

A8

Page 340

 

control unit, frame (SCH), component

 

 

 

description

 

 

 

 

 

 

i Electronic systems, Actros, model 963 > 09/2011 >

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