Mercedes-Benz AGS, GS7 Service manual
As at 10/03
Trucks • Transmission
Telligent automatic transmission
in ACTROS and ATEGO
Specialist training
Trucks • Transmission <> Telligent
automatic transmission in ACTROS and
This document is intended solely for use in training and is not subject to regular updating.
Printed in Germany
ã 2003 Copyright DaimlerChrysler AG
Publisher: Global Training
This document with all its sections is protected under the laws of copyright. Its use for any purpose whatsoever
requires the prior written consent of DaimlerChrysler AG. This applies in particular to its reproduction, distribution,
modification, translation, recording on microfilm or storage and/or processing in electronic systems, including
databases and on-line services.
1511 5555 02 - 1
st
edition 10.03 124 As at 10/03
Note:
The term »employees« does not imply any preference
of gender and incorporated male and refers to maler
and female employees alike.
Content 29.10.2003
Title Page
Welcome ..................................................................................................................................................................................................................................................1
Training Course Description Code NGAS - MA253..................................................................................................................................................................................3
Overview of shifting systems for ACTROS, AXOR and ATEGO.................................................................................................................................................................4
KontAct network diagram ACTROS models 930 - 934 ............................................................................................................................................................................6
KontAct network diagram for ACTROS models 930-934; exercise .........................................................................................................................................................8
EAS II (Code GE 2) - evolution of control units ........................................................................................................................................................................................9
EAS II - (Code GE2), function diagram ...................................................................................................................................................................................................10
EAS II (Code GE 2), function ..................................................................................................................................................................................................................12
EAS II - (Code GE2), function diagram; exercise ....................................................................................................................................................................................13
Power train networking with EAS II, ACTROS models 930-934; exercise .............................................................................................................................................15
Information exchange on gear shifting EAS ACTROS, models 930-934; exercise ................................................................................................................................17
EAS II - (Code GE2), information exchange and actual values, exercise ...............................................................................................................................................20
EAS II - (Code GE2), components ..........................................................................................................................................................................................................22
EAS II - (Code GE2), control circuit ........................................................................................................................................................................................................25
EAS II - (Code GE2), clutch actuator adjustment, exercise ...................................................................................................................................................................27
EAS II - (Code GE2), clutch actuator - clutch control; exercise .............................................................................................................................................................28
EAS II - (Code GE2), versions, exercise..................................................................................................................................................................................................30
EAS II - (Code GE2), teach-in process; exercise ....................................................................................................................................................................................31
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EAS II - (Code GE2), teach-in process and teach-in faults; exercise......................................................................................................................................................32
EAS II - (Code GE2), clutch characteristics............................................................................................................................................................................................34
EAS II - (Code GE2), backup mode special features ..............................................................................................................................................................................36
EAS II - (Code GE2), drive control actual values and GS II, exercise .....................................................................................................................................................37
Foot throttle actuator, standard quantity; exercise ...............................................................................................................................................................................39
Foot throttle actuator, onboard teach-in, ACTROS models 930 - 934 ..................................................................................................................................................40
Troubleshooting chart for GS II and EAS II, TIPS procedure and application ........................................................................................................................................41
Carrying out diagnosis with the layer model .........................................................................................................................................................................................43
EAS II - (Code GE2), practical 1; exercise ..............................................................................................................................................................................................50
EAS II - (Code GE2), practical 2; exercise ..............................................................................................................................................................................................54
EAS II - (Code GE2), practical 3; exercise ..............................................................................................................................................................................................56
AGS (Code GE1), functional description ................................................................................................................................................................................................58
AGS (Code GE1), installation survey ......................................................................................................................................................................................................59
Design and features of the G60/85 transmission; exercise .................................................................................................................................................................60
G60/85 transmission transverse shift gate; exercise ...........................................................................................................................................................................63
ATEGO power train networking control units - AGS (Code GE1), exercise............................................................................................................................................64
ATEGO power train networking engine management - AGS (Code GE1); exercise ...............................................................................................................................65
Power train networking - AGS (Code GE1), ATEGO ...............................................................................................................................................................................67
Power train networking - AGS (Code GE1), ATEGO, exercise ................................................................................................................................................................69
AGS (Code GE1), sensor unit operation.................................................................................................................................................................................................71
AGS (Code GE1), sensor unit operation; exercise .................................................................................................................................................................................72
AGS (Code GE1), location of the AGS components on the transmission and their task.......................................................................................................................75
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TR Content
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AGS (Code GE1), location of the AGS components on the transmission and their task; exercise........................................................................................................81
AGS (Code GE1), assignment and actuation of the solenoid valves; exercise ......................................................................................................................................83
AGS (Code GE1), transmission shift states, exercise ............................................................................................................................................................................86
AGS (Code GE1), sensor analysis, teach-in process and shifting procedure.........................................................................................................................................91
AGS (Code GE1), teach-in process and teach-in faults; exercise ..........................................................................................................................................................93
AGS (Code GE1), clutch sensing............................................................................................................................................................................................................97
AGS (Code GE1), FR and AGS actual values; exercise...........................................................................................................................................................................98
AGS (Code GE1), AGS clutch balancing.............................................................................................................................................................................................. 100
AGS (Code GE1), instructions for testing and repair work ................................................................................................................................................................. 102
AGS (Code GE1), emergency operation characteristics ..................................................................................................................................................................... 103
Transmission diagnosis, practical example template ......................................................................................................................................................................... 104
AGS (Code GE1), practical 1; exercise................................................................................................................................................................................................ 108
AGS (Code GE1), practical 2; exercise................................................................................................................................................................................................ 110
AGS (Code GE1), practical 3; exercise................................................................................................................................................................................................ 112
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TR Content
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10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR Content
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Welcome 29.10.2003
Welcome to the NGAS training course. As the training course progresses, it
will become evident how this subject is presented. While it was relatively easy
to have an overview of the shift devices used with the LK and SK, one or two
things have changed since the launch of the ACTROS, ATEGO and AXOR. The first
challenge has no doubt been dealing with the "networking" of the systems.
This will be just one of the hurdles you will have to overcome in the course of
the NGAS training. It will soon become evident that, even with a good
foundational training in electrics, you will only be able to do a proportion of
the tasks set. The other tasks require a good understanding of transmission
mechanics, wiring and different hydraulic systems.
If you have some experience and understanding in the areas of mechanics,
hydraulics and electrics, this will be of great benefit and you will be able to
follow the training course easily. If not, then you have quite some ground to
cover, but we will be happy to help and support you in your efforts.
This is because those who understand the systems are also quick to make a
confident diagnosis. While diagnostic aids, such as DAS and WIS, can
certainly help you in your work, they will rarely actually make the decision for
you as to what ultimately needs repairing.
During the training course you will work with all the named diagnostic aids so
that you will be in a better position afterwards to make a diagnosis on the
shift devices "at home", in your workshop.
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Welcome
N26.10-2067-00
1
Training sequence
Day 1
Welcome
Overview of gearshift systems and types of gearshift
system
Design and function of the Telligent automatic
transmission II – EAS II gearshift system in the
ACTROS
Networking of the Telligent automatic transmission II
– EAS II gearshift system in the ACTROS
Teach-in processes of the Telligent automatic
transmission II – EAS II gearshift system in the
ACTROS
DAS actual values of the GS II system and drive
control
Practical work on the ACTROS
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Day 2
Design and function of the Telligent automatic
transmission – AGS gearshift system in the ATEGO
Networking of the Telligent automatic transmission –
AGS gearshift system in the ATEGO
Teach-in processes of the Telligent automatic
transmission – AGS gearshift system in the ATEGO
DAS actual values of the AGS system and drive
control
Practical work on the ATEGO
Troubleshooting aids based on customer complaints
Presentation and feedback in plenary session
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Troubleshooting aids based on customer complaints
Presentation and feedback in plenary session
Feedback from day 1
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Welcome
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Final test
Feedback and close of training session
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Training Course Description Code NGAS - MA253 29.10.2003
Training course description
Target group
Requirements
Performance level
Methodology
Duration
Objectives
Contents
ACTROS, ATEGO — Telligent® automatic transmission (EAS, AGS) • Specialist training
Mechanics, electricians
The course participants are required to have passed the final test of the NGGG training or have worked through
the preliminary training and passed the initial test. (The knowledge required for this can be acquired from the
CBTs "Telligent gearshift system Parts 1 – 4", "Telligent automatic transmission Parts 1 – 2" and "Wiring
diagrams Parts 1 + 3").
3
50% theory, 50% practical
2 days DCVD, 2-3 days Export
The participant can:
· independently prepare a diagnosis on the Telligent® automatic transmission (ACTROS - EAS; ATEGO - AGS)
· perform testing, adjusting and repair work
· Design and function of the Telligent® automatic transmission vehicle networking
· Drive control on pneumatic (EAS) and hydraulic (AGS) shifting systems
· Diagnosis using current diagnosis systems and fault diagnosis based on case examples
· Carrying out the necessary teach-in processes
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TR Training Course Description Code NGAS - MA253
3
Overview of shifting systems for ACTROS, AXOR and ATEGO 11.02.03
Since the launch of the ATEGO, AXOR and ACTROS, various other shifting systems have been introduced in addition to the mechanical gearshift system, the MPS
and the EPS, already familiar to us from the SK.
{0>Die verschiedenen Schaltungsarten werden über Verkaufscode dem jeweiligen Getriebetyp und Fahrzeug zugesteuert.<}100{>The various shifting types are
assigned to the respective transmission type and vehicle by way of the sales code.
The respective sales code can be found on the data card.
While no completely new types of gearshift system were introduced with the refinement of the ACTROS model (MPII) in the spring of 2003, existing systems were
nevertheless revised. As a result new sales codes have been issued for better differentiation.
The ATEGO model series is also earmarked for various innovations in 2003. These are also listed below.
The list differentiates between the following shifting systems in the current generation of vehicles:
ACTROS, AXOR, ATEGO Changes to ACTROS models 930 - 934
Sales code GS 1:
· Mechanical shift - MS
· Mechanical-pneumatic shift – MPS
· Mechanical-pneumatic shift with
pneumatic shifting aid - MPS with PSH
Sales code GS 3:
· Hydraulic shift - HS
· Hydraulic-pneumatic shift - HPS
· Hydraulic-pneumatic shift with shift force assist – HPS with SKU
Sales code GS 2: Sales code GS 7:
· Telligent gearshift system – EPS II · Telligent gearshift system II (GSII)
Sales code GE 1: Sales code GE 2:
· Telligent automatic transmission – EAS · Telligent automatic transmission II – EAS II
· Telligent automatic transmission -- AGS
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TR Overview of shifting systems for ACTROS, AXOR and ATEGO
4
Gearshift system types arranged according to vehicles and transmissions
Mechanical shift Hydraulic shift Telligent Telligent
GS 1 GS 3 GS 2 GS 7 GE 1 GE 2
gearshift syst. aut. transmission
ATEGO
(up to 15t) G 60 - 6 GC 5
ATEGO
(as of 18t) G 100 - 12 GC 7
AXOR
ACTROS
ZF S 5-42 GF 1
G 56 - 6 GC 4
G 85 - 6 GC 6
G 100 - 12 GC 7
G 85 - 6 GC 6
G 131 - 9 GT 1 10/03
G 221 - 9 GD 5
G 211 - 16 GD 3
G 211 - 16 GD 3
G 221 - 9 GD 5
G 240 - 16 GC 2
G 210 - 16 GC 3
G 211 - 16 GD 3
G 231 - 16 GH 6
G 240 - 16 GC 2
G 260 - 16 GC 1
MS MPS MPS with
PSH
!
!
!
!
!
!
!!
!!!!
!!!!
!!!!
HS HPS HPS with
SKU
!
!
!
!!
!!!
!!!
GS GS II EAS/AGS EAS II
10/04
AGS
AGS
AGS
!
EAS
EAS
EAS
EAS
EAS
!
!
!
!
!
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TR Overview of shifting systems for ACTROS, AXOR and ATEGO
5
KontAct network diagram ACTROS models 930 - 934 04.02.03
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TR KontAct network diagram ACTROS models 930 - 934
W00.19-1011-79
6
1
2
3
4
5
6
7
22
A3 Control unit, drive control (FR) CAN 7 Trailer CAN (PSM) Z2 CAN star point, cab dash support, additional
A7 Base module (GM) CAN 8 Body CAN Z3 CAN star point, additional
A11 Control unit, brake control (BS) CAN 9 Telematics CAN
A16 Control unit, gear control (GS) CAN 10 Speedometer CAN
A20 Control unit, retarder control (RS) CAN 11 Trailer CAN (BS)
Power train components
Brake components
Trailer and body components
Vehicle components CAN 1 Vehicle CAN P2 Instrument (INS)
Cab components CAN 2 Interior CAN P3 Modular tachograph (MTCO)
Frame components CAN 3 Frame CAN X11 15-pin trailer socket
Telematics / diagnosis CAN 4 Engine CAN X12 7-pin ABS trailer socket
Body electronics CAN 5 Transmission CAN X13 Diagnostic socket
A22
A64
A65
CAN 6 Brake CAN X126 Telematics platform (FleetBoard)
Control unit, parameterizable special module (PSM) K2 Battery disconnect switch
Front module (FM)
Rear module (HM)
K
K
Diag K-line diagnosis
Emergency K-line, emergency running mode
Note: For further information see GF 00.19-W-0002 MP "Extended vehicle network KontAct function"
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR KontAct network diagram ACTROS models 930 - 934
7
KontAct network diagram for ACTROS models 930-934; exercise 12.02.03
This exercise is concerned with the new network in the ACTROS. Use the new network diagram to work through the following tasks.
Task
Task
m Enter the CAN BUS designations.
CAN 3
CAN 1
CAN 5
CAN 6
CAN 4
CAN 2
m Which control units are part of the vehicle CAN BUS?
Frame CAN BUS
Vehicle CAN BUS
Transmission CAN BUS
Brakes CAN BUS
Engine CAN BUS
Interior CAN BUS
CAN 10
CAN 11
CAN 7
CAN 9
CAN 8
Tachograph CAN BUS
Trailer CAN (BS)
Trailer CAN (PSM)
Telematics CAN BUS
Body CAN
- Base module (A7), control unit for drive control (A3), control unit for brake control (A11)
- Control unit for retarder control (A20), Parameterizable special module control unit (A22)
- Instrument (P2), CAN star point cab dash support, additional (Z2)
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TR KontAct network diagram for ACTROS models 930-934; exercise
8
EAS II (Code GE 2) - evolution of control units 29.10.2003
ACTROS, models 950 -954
Control units
ACTROS, models 930 - 934
Software modules
ACTROS, models 930 - 934
Control units
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TR EAS II (Code GE 2) - evolution of control units
GT26_00_0014
9
EAS II - (Code GE2), function diagram 29.10.2003
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TR EAS II - (Code GE2), function diagram
GT_26_21_0002 (W26.21-1009-79)
10
1 Gate shift cylinder B2 Clutch travel sensor S144 Button group on left of multifunction steering wheel
2 Range shift cylinder B3 Countershaft speed sensor S145 Button group on right of multifunction steering wheel
3 Gear cylindrical actuator B17 Speed sensor
4 Splitter shift cylinder B57 Transmission output speed sensor Y29 Solenoid valve, split 1 (MS1)
5 Clutch actuator B60 Gear sensor (SGG) Y30 Solenoid valve, split 2 (MS2)
6 Multifunction steering wheel B61 Gate sensor (SGE) Y31 Solenoid valve, range 1 (MR1)
B62 Splitter sensor (SSP) Y32 Solenoid valve, range 2 (MR2)
B63 Range sensor (SRA) Y33 Solenoid valve, gate 1 (MG1)
Y34 Solenoid valve, gate 2 (MG2)
A3 Control unit for drive control (FR) with integrated
drive control (FR) software module
A6 Control unit for engine control (MR) CAN2 Interior CAN (redundant) Y36 Even gears air admission solenoid valve (MGB)
A7 Base module (GM) CAN4 Engine CAN Y37 Uneven gears air release solenoid valve (MUE)
A15 Sensor unit for gear control (GS) CAN5 Transmission CAN Y38 Even gears air release solenoid valve (MUE)
A16 Control unit for gear control (GS) with integrated
gear control (GS) software module
A90 Gate module KNot K-line emergency running mode
A91 Range module P2 Instrument (INS)
A92 Gear module
CAN1 Vehicle CAN Y35 Uneven gears air admission solenoid valve (MUB)
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TR EAS II - (Code GE2), function diagram
11
EAS II (Code GE 2), function 29.10.2003
General points:
Based on the gear control II (GS II) shifting system, the Telligent automatic transmission II (EAS II) is a special design with automated clutch.
The design of the Telligent automatic transmission II (EAS II) based on the gear control II (GS II) has been substantially simplified:
The entire clutch hydraulic system used in the first-generation EAS has been replaced by an electropneumatic clutch actuator. This clutch actuator directly
operates the mechanical clutch system.
The old EAS, AG and KS control units are still there but only as virtual control units. The AG is integrated as a drive control software module. The KS control
unit is integrated in the GS control unit as a clutch control software module.
This dispenses with the need for hydraulic lines and maintenance work.
Only the electrical and pneumatic lines are still connected to the clutch actuator.
With the fold-out emergency clutch pedal no longer required, only the accelerator and brake pedals remain.
The option of activating manual or automatic shift mode via a selector switch on the gear control sensor unit has been retained.
Ride comfort has been improved, e.g., the system changes independently from the normal drive mode to a maneuver mode if required. This makes
maneuvering considerably easier.
The Telligent automatic transmission II (EAS II) can be operated in two modes:
· Automatic operation
· Manual operation
The electronic systems for the transmission and the on-board related functions are entirely separate.
Information is exchanged between the electronic systems in the form of CAN messages via the CAN connections
Vehicle CAN (CAN 1),
Interior CAN (CAN 2),
Engine CAN (CAN 4)
Transmission CAN (CAN 5)
and via the
· K line emergency running mode (KNot), in backup drive mode
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TR EAS II (Code GE 2), function
12
EAS II - (Code GE2), function diagram; exercise 29.10.2003
Task
Using the drawing opposite allocate the following components to the
corresponding terminals, fuses and relays!
Component Terminal Fuse Relay
P2
30 F 17
15 F 30 K4
A3 30 F 14
15 F 28
A16
30 F 4 ----
30 F 12
15 F 20
A 15
15 F 28
----
----
K4
----
K3
K4
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TR EAS II - (Code GE2), function diagram; exercise
N26.20-2010-12
13
Task
m Indicate the correct sequence of the signal path during a gear change on the TelligentÒ automatic
transmission in "Manual mode".
Note:
For further information, see GF 26.20-W-0001 MP "Gear control (GS) function" and circuit diagram.
Task
3
2
1
6
5
4
m The TelligentÒ automatic transmission communicates with other components and systems in different
GS control unit
FR control unit
Sensor unit
GS control unit
Gear, gate, range and splitter sensors
Gear, gate, range and splitter solenoid valves
ways. Complete the table.
Component Designation Communication / Connection Designation Component
Sensor unit A15
FR control unit A3
GS control unit A16
Instrument P2
CAN 5 (Transmission CAN)
Electrical line
Electrical line
KNot/CAN1/CAN5
A3 FR control unit
A16 GS control unit
Connected components
A16 GS control unit
Instrument P2
Multifunction steering
S144/S145
CAN1 / CAN2
Electrical line
wheel
Modular tachograph P3
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TR EAS II - (Code GE2), function diagram; exercise
CAN 5 (Transmission CAN)
A7 Base module
A7 Base module
A16 GS control unit
14
Power train networking with EAS II, ACTROS models 930-934; exercise 02.06.03
X13 B28
CAN 10
B17
Y44
MTCO
P3
B65
B66
INS
P2
RS
A20
G2
S2
S1A42
B1
A15
A68 A82
ASIC
CAN 2
CAN 1
PSM
A22
CAN 5
FR
A3
CAN 4
MR
A6
FLA
A4
BS
A11
Y1
K
GS
A16
Y2
GM
A7
CAN 3
HM
A65
B5
S144 S145
B10 B15 B16 B65 B111
B11 B12 B14
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR Power train networking with EAS II, ACTROS models 930-934; exercise
S10 S11 S166
Y6-13 M1
TM Antriebsstrang 1_D.ppt
15
Task
m The diagram shows an all-wheel drive vehicle with retarder control (RS) and EAS II.
Name the missing components.
The following questions may help you to solve the problem.
· How is the clutch actuated?
· Have you also considered clutch sensing?
· Have you thought about all the components required for engaging a gear?
· How is the corresponding gear position determined?
· Have you taken the splitter gearshift system components into consideration?
· How is a driver command transmitted?
Note: Further information on the Telligent automatic transmission II can be found in WIS under
GF 26.21-W-0001 MP "Electronic drive control (EAS) operation".
-
-
-
-
-
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR Power train networking with EAS II, ACTROS models 930-934; exercise
16
Information exchange on gear shifting EAS ACTROS, models 930-934; exercise 29.10.2003
Operation Transmitter Receiver What is the reason and the purpose for the part action?
Evaluation of shift logic FR FR Evaluation of CAN messages (influencing variables)
Internal evaluation in the AGF software module
Select: open clutch FR
Reduce engine torque FR
Open clutch
Perform gear change
Adjust engine speed
Current gear position feedback
GS Y39.1/39.2
GS
FR MR
B60, B61, B62,
B63
Display shifted gear
Close clutch
GS
GS Y39.3/39.4
GS
MR
CAN 5 (transmission CAN)
CAN 4
De-energized power train
Energizing of corresponding solenoid valves
Gear can only be changed when clutch open
Corresponding
Energizing of corresponding solenoid valves
solenoid valves
Change in unit pump actuation time and permanent brake actuation, levels 1+2
Reduction of clutch wear
GS
Evaluation of displacement value sensor, energizing of corresponding solenoid valves,
determination of current gear
INS CAN 5, CAN 1
Display of engaged gear
Energizing of corresponding solenoid valves
Establishment of power train frictional connection
Increase engine torque
FR MR
CAN 4, change in unit pump actuation time
Adjustment of specified engine torque setting on FR
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR Information exchange on gear shifting EAS ACTROS, models 930-934; exercise
17
Task
m You now know the gear change sequence involved in a gear change. Complete the table below by
determining the detailed information contained in the data exchanged between transmitter and
receiver. If possible, explain why the information is required.
Operation Transmitter Receiver Relevant information Reason
Evaluation of shift logic FR FR Internal data exchange on AGF software
module
Select: open clutch FR GS
Reduce engine torque FR MR
Open clutch request Control of clutch actuator
CAN message (change engine speed and
engine torque)
Open clutch GS Y39.1/39.2 Energizing of clutch actuator solenoid valves,
clutch position, electronic pulse
Perform gear change GS Corresponding
Electronic pulse
solenoid valves
Adjust engine speed MR,
Y6-Y13
FR
Current gear position
feedback
B60, B61, B62,
B63
GS
Display shifted gear GS INS
Change unit pump actuation time and engine
brake actuation
Position of sensors in gear, gate, splitter and
range cylinders
Shifted gear Driver information
Close clutch GS Y39.3/39.4 Energizing of clutch actuator solenoid valves,
clutch position, electronic pulse
Evaluation of relevant CAN messages
(influencing variables)
De-energizing of power train
Open clutch,
Clutch position feedback
Reduction of clutch wear
Evaluation takes place in GS control unit
Close clutch
Increase engine torque FR MR CAN message
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR Information exchange on gear shifting EAS ACTROS, models 930-934; exercise
Adjust FR specified torque setting
18
Task
m You now know the information exchange when shifting gear. But how can you still test the pieces of
information?
Complete the table below. Use the DAS simulation and the DAS to help you complete the
corresponding actual values in the respective fields.
Operation Transmitter Actual values Transmission Receiver Actual values
Evaluation of shift logic FR - - - - - - FR
Select: open clutch FR
16, 82, 83, 86
- - - GS
96, 100, 114, 117
Reduce engine torque FR
Open clutch GS
14, 15
039
- - - MR
- - - Y39.1/Y39.2
B2
Perform gear change GS
288-297
- - - Corresponding
solenoid valves
Adjust engine speed MR
Current gear position
feedback
B60, B61,
B62, B63
Display shifted gear GS
Close clutch GS
004, 006, 034
- - - Y6-Y13 - - -
- - - - - - GS
156 FR
287
- - - Y39.1/Y39.2
INS - - -
B2
Increase engine torque FR
14, 15
- - - MR
113, 114
157, 287, 307
01, 02
221, 223
- - -
35-39
- - -
004, 006
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR Information exchange on gear shifting EAS ACTROS, models 930-934; exercise
19
EAS II - (Code GE2), information exchange and actual values, exercise 29.10.2003
The control units are networked together by a
linear bus structure using the CAN bus network
between the electronic systems of the engine
control and the on-board systems (GS, INS, etc.).
A control unit receives a measured value from a
sensor, from which it generates a data telegram
and puts in on the data bus, where it is available
to all the control units connected to the CAN bus.
The control electronics control and monitor the
entire GS system gear change sequence.
The control electronics receive information from
the system's own sensors and switches (travel
sensors and speed sensors) and also via the CAN
interface of other vehicle systems.
The corresponding solenoid valves are actuated
for shifting the gears. Data are exchanged with
other electronic circuits via the CAN interface.
The shifted and preselected gears and also the
events and text messages are displayed to the
operator in the instrument.
X13
Y44
G2
B17
B65
S2
S1A42
P3
B66
B1
Y1
CAN 10MTCO
B28
A15
Y2
INS
P2
RS
A20
CAN 4
MRA6FLA
A68 A82
FR
A3
A4
ASIC
CAN 2
CAN 1
PSM
A22
CAN 5
B10 B15 B16 B65 B111
BS
A11
K
GS
A16
GM
A7
CAN 3
HM
A65
B2 B3 B57 B99
B60 B61 B62 B63
Y29
Y34 Y35 Y36 Y37 Y38
Y30 Y31 Y32 Y33
Y39.1 Y39.2 Y39.3 Y39.4
S144 S145B5
Y6-13 M1
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR EAS II - (Code GE2), information exchange and actual values, exercise
B11 B12 B14
S10 S11 S166
PPT
20
Task
m The diagram shows the GS electronic circuits and those components directly connected. The details
are based on the given vehicle, an Actros with Telligent automatic transmission and all-wheel function.
1. First complete the information exchanged and the direction of information between the relevant
components.
2. Secondly complete the actual value (IW) number that goes with the relevant information.
Use GF 26.20-W-0007MP.
Module IW Information Information IW Pin Com-
ponen
A92
A90
Y35 MUB
290 Actuation of uneven gear
Y37 MUE 291 Actuation of uneven gear
Y36 MGB
Y38 MGE
B60
Y29 MG1
Y30 MG2
292 Actuation of uneven gear
293 Actuation of even gear
036 Gear cylinder position
294 Actuation of gate R
295 Actuation of gate 3/4
ç
ç ç
ç ç
ç ç
ç
A16
è ç
ç
GS
ç ç
ç
ç
Transmission output speed with
GS backup mode 308 P2
V signal 037
Gate cylinder position 035
Split cylinder position
Clutch position 039
Transmission input speed 021
Oil temperature
221
P3
B61
B62
B2
B3
B47
B99
transfer case
è è
è è
ç è
ç è
Detection of direction of travel 281
Open clutch - rapid 298
Open clutch - slow 298
Close clutch - rapid 298
B57
MKUB1 A39.1
MKUB2 A39.2
MKUE1 A39.3
A91
Y33 MS1
Y34 MS2
Y31 MR2
Y32 MR1
288 Actuation of splitter L/H
289 Actuation of splitter L/H
297 Actuation range high
296 Actuation range low
Module
t
A93
B63
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR EAS II - (Code GE2), information exchange and actual values, exercise
038 Range cylinder position
è è
Close clutch - slow 298
MKUE2 A39.4
21
EAS II - (Code GE2), components 29.10.2003
Clutch actuator
The tasks of the clutch actuator are as follows:
· To convert the electrical control signals in the pneumatic control of the actuator cylinder
· To record clutch travel and provide an electrical signal
· To operate the mechanical clutch system
The following components are integrated in the clutch actuator:
· Solenoid valves: Clutch aeration 1, Clutch aeration 2,
Clutch bleeding 1, Clutch bleeding 2
· Clutch travel sensor (B2)
· Actuator cylinder
W25.20-1018-11 (GT_25_20_0010)
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR EAS II - (Code GE2), components
N25.20-2064-01 N25.20-2063-01
22
The clutch actuator directly operates the
mechanical clutch system.
Each of the clutch positions can be moved to and
retained by means of the four solenoid valves.
This basic principle applies:
Cylinder extended ® Clutch open
Cylinder retracted ® Clutch closed
The clutch travel sensor (B2) records the current
position of the clutch actuator.
Key:
MKUB1 Solenoid valve, aerate clutch with throttle
MKUB 2 Solenoid valve, aerate clutch
MKUE 1 Solenoid valve, bleed clutch with throttle
MKUE 2 Solenoid valve, bleed clutch
The four solenoid valves are necessary to properly control the inward and outward flow of compressed air used to move the cylinder.
MKUB2 and MKUE2 have a large air passage and are used to roughly regulate the clutch travel.
MKUB1 and MKUE1 work with a smaller flow area and are used for fine adaptation and very precise positioning during clutch actuation.
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR EAS II - (Code GE2), components
GT25_00_0001
23
Transmission output speed sensor (B57, B99)
The task of the transmission output speed sensor
is as follows:
· To record the transmission output rpm
DZ1/DZ2
The additional recording of the transmission
output rpm is needed to detect the direction of
rotation.
The transmission output speed sensor (B57) is
installed in all vehicles with Telligent automatic
transmission II.
Vehicles with Telligent automatic transmission II
require direct recording of the transmission
output rpm.
This is because the speed sensor (B17) has been
moved to the transfer case output.
For this reason the transmission output speed
sensor (B99) is only additionally used on vehicles
with Telligent automatic transmission II and allwheel drive.
10/03 Trucks • Transmission <> Telligent automatic transmission in ACTROS and ATEGO <<>> Specialist training
TR EAS II - (Code GE2), components
W26.19-1026-06 (GT_26_20_0019)
24
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