TailGUARDTM - WABCO INFORM Web
TailGUARDTM
FOR TRUCK & BUS APPLICATIONS
SYSTEM DESCRIPTION
Table of contents
1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 General safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Summary of the safety instructions from the chapters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 Vehicle requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 System and function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2 Reverse monitoring system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.3 Autonomous braking with separate valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.4 Braking via a prepared interface for TailGUARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1 Basic configuration for identification and warning and for braking intervention via a prepared interface
for TailGUARD on the vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2 Extension for autonomous braking (via separate valves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.3 Extension for additional buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1 Notes on installing the Electronic Extension Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.2 Notes on installing the cables / dummy caps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.3 Notes on installing the ultrasonic sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.3.1TailGUARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.3.2TailGUARDRoof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.3.3TailGUARDMAX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.4 Notes on installing the Trailer Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.5 Notes on connecting the speed signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.6 Notes on installing the valves for brake intervention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.7 Notes on controlling the stop lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.1Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.2 Diagnosis hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.3 Parameter setting in TEBS E diagnostic software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.4 Functional test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.4.1 Electronic Extension Module pressure test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.4.2 Stop light control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.4.3 Measured value speed signal Electronic Extension Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.5 Start-up of the ultrasonic sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.5.1 Normal EOL test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.5.2 Reduced EOL test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.1 Instructing the driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.2 Activating the system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.3 Deactivation of the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3
Table of contents
9.4 Operation via the Trailer Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.4.1Indication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.4.2 Acoustic warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.4.3 Adjusting the buzzer volume in the Trailer Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.4.4 Deactivating TailGUARD via Trailer Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.5 Distance indication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.6 Detection of malfunctions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.6.1 Minor faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.6.2 Severe faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
10 Workshop notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.1 Maintenance information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.2Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.3 Repair and replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.4 Disposal / Recycling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
11Annex. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11.1 Circuit diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11.2 Pin assignment "Electronic Extension Module". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
11.3 Checklist TailGUARD Truck & Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Edition 3
Version 2 (12.2016)
815 010 211 3 (en)
4
This publication is not subject to any update service.
You will find the current version on the internet at
http://www.wabco.info/i/598
General information
1
General information
Abbreviations
ABBREVIATION
MEANING
ABS
Anti-Lock Braking System
ALS
(German: Automatischer Blockierverhinderer); Automatic
Anti-Lock System
LSV
Load Sensing Valve
EBS
Electronic Braking System
ESD
Electrostatic Discharge
GIO
Generic Input/Output
LIN
Local Interconnect Network; specification for a serial
communication system, also LIN bus; ultrasonic sensor
port/interface
PLC
Power Line Communication; data communication via
cable for power supply
TEBS
Electronic Braking System for Trailers
Purpose of the document
This document is directed toward vehicle manufacturers and workshops.
Copyright and trademark notice
The content, particularly technical information, descriptions and figures,
corresponds to the state current at the time of printing and is subject to change
without notice.
This document, including all its parts, in particular texts and figures, is protected
by copyright. Use outside the statutory or contractual limits require authorisation
by the copyright owner. All rights reserved.
Any brand names, even if not indicated as such, are subject to the rules of the
trademark and labelling rights.
Symbols used
!!
Important information, instructions and/or tips that you must always observe.
Reference to information on the internet
–– Action step
ÖÖ Consequence of an action
„„ List
5
General information
Technical documents
–– Open the WABCO INFORM online product catalogue:
http://inform.wabco-auto.com
–– Search for documents by entering the document number in the
search field Product number.
–– Click the Start button.
–– Click the Publications radio button.
The WABCO online product catalogue INFORM provides you with convenient
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All documents are available in PDF format. Please contact your WABCO
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Please note that the publications are not always available in all language
versions.
DOCUMENT TITLE
DOCUMENT NUMBER / LINK
TailGUARD for Truck & Bus
applications – System Description
815 XX0 211 3
Test report EB181.2 of TÜV Nord
On request
Trailer Remote Control –
Operating Manual
815 990 212 3
Trailer Remote Control – Installation
and Connection Instructions
815 XX0 195 3
Service Instruction "Overview tail
profiles for TailGUARD Truck & Bus"
http://www.wabco.info/i/46
TEBS E system description
815 XX0 093 3
Coupling Catalogue – Push-In,
Standard, Conventional, Accessories
815 XX0 080 3
*Language code XX: 01 = English, 02 = German, 03 = French, 04 = Spanish, 05 = Italian,
06 = Dutch, 07 = Swedish, 08 = Russian, 09 = Polish, 10 = Croatian, 11 = Romanian,
12 = Hungarian, 13 = Portuguese (Portugal), 14 = Turkish, 15 = Czech, 16 = Chinese,
17 = Korean, 18 = Japanese, 19 = Hebrew, 20 = Greek, 21 = Arabic, 24 = Danish, 25 = Lithuanian,
26 = Norwegian, 27 = Slovenian, 28 = Finnish, 29 = Estonian, 30 = Latvian, 31 = Bulgarian,
32 = Slovakian, 34 = Portuguese (Brazil), 98 = multilingual, 99 = non-verbal
Structure of the WABCO product number
WABCO product numbers consist of 10 digits.
Production date
Type of device
Variant
Status digit
0 = New device (complete device); 1 = New device (subassembly);
2 = Repair kit or subassembly; 4 = Component part; 7 = Replacement device;
R = Reman
6
General information
Choose genuine WABCO parts
Genuine WABCO parts are made of high quality materials and are rigorously
tested before they leave our factories. You also have the assurance that the
quality of every WABCO product is supported by a powerful customer service
network.
As a leading supplier to the industry, WABCO collaborates with the world’s
leading original equipment manufacturers, and has the experience and
capacities required to also satisfy the most stringent production standards. The
quality of every genuine WABCO part is supported by:
„„ Tooling made for serial production
„„ Regular sub-supplier audits
„„ Exhaustive end-of-line tests
„„ Quality standards < 50 PPM
Installing replica parts can cost lives – genuine WABCO parts protect your
business.
WABCO additional services
The package you will get with a genuine WABCO part:
„„ 24-month product warranty
„„ Overnight delivery
„„ Technical support from WABCO
„„ Professional training solutions from the WABCO Academy
„„ Access to diagnostics tools and support from the WABCO Service Partner
network
„„ Straightforward claims handling
„„ Plus, of course, the confidence that the Original Equipment Manufacturers’
rigorous quality standards are met
WABCO Service Partner
WABCO Service Partners – the network you can rely on. You can access 2000
high quality workshops with more than 6000 specialist mechanics, all trained
to WABCO’s exacting standards and equipped with our most up-to-the-minute
systems diagnostic and support technology.
Your direct contact to WABCO
In addition to our online services, trained members of staff are there to help you
at our WABCO Service Partners to directly answer any technical or businessrelated questions you may have.
Contact us if you need assistance:
You can find your WABCO partner here:
http://www.wabco-auto.com/en/how-to-find-us/contact/
7
Safety information
2
Safety information
2.1
General safety instructions
Observe all required provisions and instructions:
„„ Read this publication carefully.
„„ Adhere to all instructions, information and safety information to prevent
injury to persons and damage to property.
„„ WABCO will only guarantee the safety, reliability and performance of their
products and systems if all the information in this publication is adhered to.
„„ Always abide by the vehicle manufacturer's specifications and instructions.
„„ Observe all accident regulations of the respective company as well as
regional and national regulations.
Make provisions for a safe work environment:
„„ Only trained and qualified technicians may carry out work on the vehicle.
„„ Use personal protective equipment if required (protective goggles,
respiratory protection, ear protectors, safety shoes).
„„ Pedal actuations can lead to severe injuries if persons are in the vicinity of
the vehicle. Make sure that pedals cannot be actuated as follows:
„„ Switch the transmission to "neutral" and actuate the park brake.
„„ Secure the vehicle with brake wedges.
„„ Fasten a visible note to the steering wheel indicating that work is being
performed on the vehicle and that the pedals are not to be actuated.
8
Safety information
Avoid electrostatic charge and uncontrolled discharging (ESD):
Note during construction and building the vehicle:
„„ Prevent potential differences between components (e.g. axles) and the
vehicle frame (chassis).
„„ Make sure that the resistance between metallic parts of the
components and the vehicle frame is less than 10 ohms.
„„ Establish an electrically conductive connection between moving or
insulated vehicle parts, such as axles, and the frame.
„„ Prevent potential differences between the towing vehicle and the trailer.
„„ Make sure that an electrically conductive connection is made between
metal parts in the towing vehicle and the coupled trailer via the coupling
(king pin, fifth wheel, claws with pins), even without a cable being
connected.
„„ Use electrically conductive bolted connections when fastening the
ECUs to the vehicle frame.
„„ Run the cable within metallic casings where possible (e.g. inside the
U-beam) or behind metal and grounded protective plating to minimise
the influence of electro-magnetic fields.
„„ Avoid the use of plastic materials if they can cause electrostatic
charging.
While carrying out repair or welding work on the vehicle, observe the
following:
„„ Disconnect the battery (if installed in the vehicle).
„„ Disconnect cable connections to devices and components and protect
connectors and ports against contamination.
„„ Always connect the grounding electrode directly with the metal next to
the welding point when welding to prevent magnetic fields and current
flow via the cable or components.
„„ Make sure that current is well conducted by removing paint or rust.
„„ Prevent heat influences on devices and cabling when welding.
9
Safety information
2.2
Summary of the safety instructions from the chapters
Observe the following safety instructions for interventions in the braking system:
„„ Observe the specifications of the vehicle manufacturer.
„„ Deactivation when the supply pressure is too low: Switch the system off if
the vehicle's supply pressure is too low.
„„ Only intervene with the braking system if you have sufficient knowledge of
the braking system and know and can take responsibility for the effect of
your actions and all their consequences.
„„ The braking system is under pressure. Before intervening with the braking
system, make sure all reservoirs and lines are pressureless.
„„ With braking interventions via separately installed valves, the front axle
must not be braked. Make sure that the vehicle's front axle can NOT be
braked by the system. Braking intervention must only occur via the rear
axle(s).
To avoid any accidents, observe the following safety instructions for operating the vehicle and as
information for the driver:
„„ Risk of injury due to system failure in extreme weather conditions: Extreme
weather conditions e.g. heavy rain or snowfall, can lead to the restricted
functionality.
„„ Objects with very soft surfaces cannot be detected under all
circumstances.
„„ TailGUARD is a reversing assistance system that helps the driver
while reversing by alerting him to approaching objects and braking
independently to prevent a collision when this becomes necessary.
„„ The driver, however, remains fully responsible for vehicle movement and
any damage that results from operating the vehicle.
„„ WABCO cannot hold liable for an accident that is caused despite of using
this system; this is a support system only.
„„ TailGUARD does not release the driver of his obligations under legal or
company regulations, such as support of reversing by a person giving
directions.
10
Safety information
To avoid any accidents, observe the following safety instructions for vehicles with braking intervention
through TailGUARD:
„„ Because the stopping distance becomes longer with heavily laden vehicles
- in particular when it is equipped with EBS - the settings (parameter
setting / pressure limiting valve) must enable sufficient deceleration for the
fully laden vehicle.
„„ Note pulsed braking when reversing too fast:
„„ TailGUARD can assist only with reversing speeds below max. 9 km/h.
„„ TailGUARD will trigger short brake pulses when a critical speed is
reached to alert the driver.
„„ If the driver accelerates further, TailGUARD deactivates itself and
outputs a fault message.
„„ In the case of EBS vehicles with brake intervention via separately
installed valves, ABS functions are not available during TailGUARD
braking. Even at the low speed range at which TailGUARD is active, the
wheels might lock on slippery surfaces.
„„ Speed signal faults due to incorrect or unprofessional connection can
significantly impair vehicle safety.
„„ Vehicles with a prepared interface for TailGUARD: TailGUARD may not
brake if the vehicle’s EBS system has a fault.
Observe the following safety instructions for handling cables:
„„ Water that enters the cable core or cable sleeve can damage electronic
control units. Cable with open ends should therefore always be connected
in the driver’s cabin to ensure that no water can enter. Where this is not
possible, use a suitable cable joint box, e.g. AK 190. This applies in
particular to the use of the prepared brake interface on the Daimler
Econic Euro6.
„„ Plan your installation position so that cables cannot become kinked.
„„ Fasten the cables and connectors so that the plug connections are not
subjected to any tensile stress or lateral forces.
„„ Never route cables over sharp edges or in the vicinity of aggressive media
(e.g. acids).
„„ Route the cable to the connections so that no water can enter the
connector.
„„ Fasten the cable ties so that the cable is not damaged.
„„ When using tools, please note the instructions of the cable-tie
manufacturer.
„„ If the cables are too long, do not wind them up but lay them in loops.
11
Safety information
Observe the following safety instructions for handling ultrasonic sensors:
„„ The surface to which the ultrasonic sensor is mounted must be even and
must be at least 2 mm larger than the ultrasonic sensor (this is required
to protect the drainage holes in the rear against direct high-pressure
cleaning).
„„ Ultrasonic sensors must not to be mounted in a U-profile because this
could cause reflections. WABCO recommends to mount the ultrasonic
sensors mechanically protected to avoid damage.
„„ The ability to detect objects largely depends on the ultrasonic sensors'
positioning on the vehicle. Make sure that the ultrasonic sensors are
installed at a height of at least 40 cm.
„„ No other vehicle components should be installed within the ultrasonic
sensor's range of vision.
„„ The rate of detection depends on object surfaces:
„„ Ultrasound is best reflected by smooth surfaces that are positioned at a
right angle to the sound's direction.
„„ Small and unfavourable surfaces such as meshed structures, furry
or hairy surfaces at an oblique angle to the sound's direction are not
detected so easily.
12
Vehicle requirements
3
Introduction
TailGUARD reduces risk when reversing by detecting stationary and moving
objects in the blind spot behind the vehicle and independently stopping the
vehicle at a safe distance from the object.
TailGUARD reduces stress for the driver while reversing and helps to avoid
collisions with pedestrians, loading ramps, barriers, trees, forklifts, cars and
other objects behind the vehicle.
TailGUARD is activated automatically when the reverse gear is engaged.
TailGUARD stops the vehicle automatically if it approaches an object within a
configurable distance between 50 and 200 cm.
After TailGUARD has braked the vehicle, the driver can start slowly reversing
again in order to continue rearward movement towards a ramp, after stopping
for example.
The TailGUARD complies with the following regulations:
„„ 72/245/EEC – EMC – Electromagnetic Compatibility
„„ ECE-R10 – Electromagnetic Compatibility
„„ ECE-R13 – Braking Systems for Commercial Vehicles
„„ Test report TÜH - TB 2016 - 045.00 – ELEX Stand Alone
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Vehicle requirements
Any commercial vehicle with a 24 V supply voltage can be equipped.
Commercial vehicles with 12 V can be equipped if a permanent supply voltage
of more than 11.5 V is ensured.
TailGUARD is approved for application in vehicles of classes M3, N2 and N3
with compressed air systems in accordance with regulations in 71/320/EEC or
ECE-R13.
The extension for implementing autonomous braking can be applied as follows:
„„ Software version from EX010314 (as of 15/ 2014)
Conventionally braked vehicles with or without ABS, but not vehicles with an
electronic braking system (EBS).
The braking system must be equipped with an ALS system according to
regulations mentioned above.
„„ Software version from EX010405 (as of 41/ 2015)
Additional vehicles with an electronic braking system (EBS) from WABCO up
to EBS3.
„„ Software version from EX010453
Additional braking via the EBS system in the towing vehicle (via TailGUARD
interface): Daimler Econic, optional extra
„„ Input for control of the towing vehicle brake via digital signal
„„ Ignoring the control signal of the towing vehicle brake at > 15 km/h
through the towing vehicle
„„ Provision of a feedback status signal that brake control is executed by the
towing vehicle
„„ Warning lamp for indicating a fault
13
Vehicle requirements
Braking via separate valves:
When connecting TailGUARD to the braking system, it must be ensured that
the system's response times continue to meet legal requirements (pressure
build-up time measurement).
The permissible braking system pressure for TailGUARD with autonomous
braking must not exceed 13 bar.
The speed signal in accordance with ISO 16844-2 (C3 signal) must be
provided in the vehicle as information on the current vehicle speed. The
vehicle manufacturer must not have prohibited use of this signal for external
systems.
ECE-R13 approval of the system is only possible in combination with an
indication of the distance to objects and the system status. The Trailer Remote
Control (display and control unit) can be installed for this purpose (standard
for braking intervention via separate valves). Alternatively the system status
can be indicated by means of the TailGUARD warning lamp and the distance
to an object by means of a display in the instrument panel or via separately
installed indicator lamps (standard for brake intervention via the TailGUARD
interface in the truck).
Vehicles equipped to draw a trailer must also be equipped with a control unit for
permanent deactivation of the system.
If the towing vehicle is equipped with the Trailer Remote Control for indicating
the distances of objects in accordance with the approval report, a towed vehicle
must not access the Trailer Remote Control. The Trailer Remote Control must
be connected in a way that rules out any communication between the trailer’s
Electronic Extension Module and the Trailer Remote Control (install throttle lines
to suppress signals from the trailer or – if the towing vehicle always drives with
the same trailer – or deactivate communication with Trailer Remote Control in
the trailer parameters.)
14
System and function
5
System and function
This chapter provides you with a general overview of function and structure of
the systems.
With TailGUARD for Truck and Bus there are the following options for
autonomous braking:
Braking via separate valves:
Safe operation of the braking system is ensured by the design with a two-way
valve if the system is in a fault-free state.
Braking via a prepared interface for TailGUARD:
The system does not have direct access to the vehicle brake and sends
braking requests to the vehicle’s braking system via a TailGUARD interface.
This function will be available in some towing vehicles from 2017.
To avoid any accidents, observe the following safety instructions for
vehicles with braking intervention through TailGUARD:
„„ Vehicles with a prepared interface for TailGUARD: TailGUARD may not
brake if the vehicle’s EBS system has a fault.
5.1
Functional description
TailGUARD is activated by shifting into reverse gear.
The ultrasonic sensors and valves are tested for proper function and the
TailGUARD system's readiness for operation is signalled to the driver.
If an object is identified while reversing and the distance becomes less than
the configured stopping distance, the vehicle will be braked for 3 seconds
before the brake is released again. The stopping distance can be configured via
parameters (between 50 and 200 cm).
At speeds above 9 km/h the deceleration defined for TailGUARD may not
suffice to stop the vehicle within the configured stopping distance.
If the vehicle moves backward at 9 km/h or more, TailGUARD triggers short
brake pulses to notify the driver of the excessive speed. TailGUARD here
regulates the speed down to 7 km/h. If these warning brake actions are ignored
and the speed continues to increase, the system is switched off at 12 km/h.
Following an autonomous braking procedure, the driver can start driving again
and continue to reverse.
Silent mode: If a buzzer is connected, it can be deactivated temporarily by
engaging the reverse gear twice (within 3 seconds), e.g. when making deliveries
in residential areas.
Depending on the parameter settings, the entire TailGUARD function can be
deactivated temporarily by engaging the reverse gear twice.
The distance information is indicated to the driver in accordance with the
respective system configuration as soon as an object is detected within 3
metres of the rear of the vehicle.
Vehicles with Trailer Remote Control: The distance to the object is indicated
in green, yellow or red bars and a tone whose frequency changes with the
distance.
15
System and function
Braking via a prepared interface for TailGUARD:
Indication is implemented via the instrument panel.
Vehicles with option: Indication via flashing rear outline marker lamps.
5.2
Reverse monitoring system
The ultrasonic sensors transmit ultrasonic waves to the area behind the vehicle.
If an object or a person reflects these sonic waves, the ultrasonic sensors
receive an echo. The distance to the object is calculated from the time the
ultrasonic waves take from transmission to reception of the echo.
The distance to detected objects is indicated by means of LED bars in the
driver's cabin. Alternatively, the distance can be indicated by a flashing
frequency of the rear outline marker lamps or an additional lamp in the
instrument panel.
TailGUARD can support up to 6 sensors. Each ultrasonic sensor monitors an
area that is similar in shape to a flattened club. By arranging the ultrasonic
sensors accordingly, objects near the roof area or the ground, for example, can
also be identified.
All ultrasonic sensors are connected to one input on the electronic control unit
as a LIN (Local Interconnect Network), which connects all ultrasonic sensors as
a tree structure.
Each ultrasonic sensor is assigned its own LIN address so that its data can be
evaluated separately within this network.
The maximum permitted cable length between ECU and the last ultrasonic
sensor is 40 m.
16
System and function
5.3
Autonomous braking with separate valves
When TailGUARD detects an object, it can act on the compressed-air braking
system of the vehicle, thus braking independently.
Active braking is only permitted if the reservoir pressure on the brake valve
(2) is at least 7.3 bar. This is ensured by a charging valve (3). A pressure
limiting valve (4) is used to define the pressure for active braking and thus for
deceleration.
After approaching an object within a critical distance, the Electronic Extension
Module (1) starts the brake action, controlling two solenoid valves (5) and (6)
via two independent circuits. A braking pressure is only fed if both solenoid
valves switch simultaneously. This rules out a braking process being initiated by
an electrical fault.
A pressure sensor (8) monitors the pressure applied by the solenoid valves.
The service brake is operated by means of a two-way valve (Select-High valve,
7).
The braking pressure on the brake cylinders is adjusted relative to the
respective load because this pressure is fed by the automatic load-sensing
valve (9).
The Electronic Extension Module switches on the stop light during autonomous
braking. If a fault monitoring system is installed for the stop light, it may need
to be adjusted. If the stop lights are monitored for faults: Fault monitoring must
only be active while the pedal is operated by the driver and LED stop lights
must not be installed.
17
System and function
Brake intervention for vehicles with ABS
ITEM
18
DESCRIPTION
1
Electronic Extension Module (electronic control unit)
2
Brake valve
3
Charging valve
4
Pressure limiting valve
5
Solenoid valve
6
Solenoid valve
7
2 way directional control valve
8
Pressure sensor
9
Automatic load-sensing valve
10
Trailer Remote Control
System and function
Braking intervention for vehicles with EBS (braking via separate valves)
ITEM
DESCRIPTION
1
Electronic Extension Module (electronic control unit)
3
Charging valve
4
Pressure limiting valve
5
Solenoid valve
6
Solenoid valve
7
2 way directional control valve
8
Pressure sensor
10
Trailer Remote Control
11
Relay valve
!!
If the autonomous braking application is retrofitted, the system must be
submitted to an acceptance procedure and an entry in the vehicle documents is
required.
The approval report EB181.2 of TÜV Nord should be submitted when the
vehicle is presented.
19
System and function
5.4
Braking via a prepared interface for TailGUARD
To avoid any accidents, observe the following safety instructions for
vehicles with braking intervention through TailGUARD:
„„ Vehicles with a prepared interface for TailGUARD: TailGUARD may not
brake if the vehicle’s EBS system has a fault.
Several vehicles from Daimler do not require an intervention into the pneumatic
braking system. In addition, functional data such as speed, driving direction
and distance to an object are electronically exchanged. With these vehicles
the Electronic Extension Module is connected to the prepared interface for
TailGUARD at the underside of the vehicle by three cables.
This vehicle configuration also does not require use of the Trailer Remote
Control, because the system’s readiness for operation and the distance
information is displayed via the instrument panel.
!!
Circuit diagram 841 802 360 0 "Braking by Truck EBS"Chapter "11.1 Circuit
diagrams", page 50
20
Components
6
Components
6.1
Basic configuration for identification and warning and for
braking intervention via a prepared interface
for TailGUARD on the vehicle
COMPONENT / PART NUMBER
Electronic Extension Module
446 122 070 0
"Supply" cable
449 305 100 0
COMMENT
„„ Control electronics
„„ When used with autonomous braking:
Vehicles with ABS: The production date must be 01/2014 or later.
Vehicles with EBS: The production date must be 41/2015 or later.
„„ Length: 10 m (other lengths on request)
„„ Connection to the Electronic Extension Module "Power" and the
vehicle's fuse box
„„ Pink: Terminal 30
„„ Black: Terminal 15
„„ White: Ground
„„ White-green: CAN1 High (optional)
„„ White-brown: CAN1 Low (optional)
Connecting cable for monitoring the
reverse gear, stop light control of rear
outline marker lamps
449 908 100 0
„„ Length: 10 m (further lengths on request)
„„ Connection "stop light cabling" to the Electronic Extension Module
"GIO12"
„„ Pink: Pickup, reversing light
„„ Black: Input, stop light left
„„ Brown: Input, stop light right
„„ Yellow-brown: Output, stop light right
„„ Yellow-black: Output, stop light left
"Diagnostic connection" cable
449 605 020 0
„„ Length: 2 m (further lengths on request)
„„ Connection to the Electronic Extension Module "Subsystems",
provides the diagnostic port at an easily accessed position on the
outside of the vehicle.
Ultrasonic sensors:
446 122 401 0 (0°)
446 122 402 0 (15° default: right)
446 122 403 0 (15°)
446 122 404 0 (15° default: left)
„„ Connecting cable 3 m included
„„ Quantity depends on the application
21
Components
COMPONENT / PART NUMBER
"Ultrasonic sensors" connecting cable
449 806 060 0
„„ Length: 6 m
„„ Connection to the Electronic Extension Module "GIO18"
Extension cable
449 747 060 0
„„ Length: 6 m
„„ Quantity depends on the application
Ultrasonic sensor distributor cable
894 600 024 0
„„ Length: 0.5 m
„„ Quantity depends on the application
Trailer Remote Control
446 122 080 0
22
COMMENT
„„ Connection to terminal 15 and ground in the fuse box
„„ Communication to the Electronic Extension Module via PLC
„„ Holder and connecting cable included
Optional: Connection of signal lights
449 535 100 0
„„ Use of signal lights instead of the Trailer Remote Control is not
covered by the TÜV approval report.
„„ Braking via a prepared interface for TailGUARD:
see circuit diagram GIO13/14
Connector housing and cabling box
„„ The following additional connectors are required for use of the
prepared interface for brake intervention with the Daimler Econic
Euro 6:
„„ Connector X1 (Daimler A056 545 57 28)
„„ Connector X2 (Daimler A030 545 88 28)
„„ Connector X3 (Daimler A007 545 46 26)
Chapter "11.1 Circuit diagrams", page 50
=> Circuit diagram: 841 802 360 0
„„ Cable joint box, e.g. AK 190
Components
6.2
Extension for autonomous braking (via separate valves)
COMPONENT / PART NUMBER
Charging Valve
434 100 033 0
Pressure limiting valve
475 010 313 0
Solenoid valve
472 170 606 0
Alternative solenoid valve for 12 V
systems
472 170 637 0
Relay valve
973 011 000 0
Alternative:
973 011 004 0
COMMENT
„„ Permits autonomous braking only if sufficient reservoir pressure is
available
„„ Set pressure: 7.3 bar
„„ Setting the braking pressure
„„ Minimum set pressure: 3.2 bar
„„ Recommended set pressure: 3.6 bar
„„ Maximum permissible pressure: 60% of the maximum braking
pressure on the rear axle.
„„ 2 units required
„„ Installed on the vehicle with the vent pointing downwards
„„ Connection to GIO13 and GIO16.
„„ 2 units required
„„ Connection to GIO13 and GIO16.
„„ Required for EBS vehicles
23
Components
COMPONENT / PART NUMBER
Pressure sensor
441 044 101 0
„„ Tests the autonomous brake intervention function when the reverse
gear is engaged
„„ Connection to GIO13
2 way directional control valve
434 208 027 0
„„ Adjusts the TailGUARD braking pressure level in the braking system
"Solenoid valve" cable
449 443 XXX 0
„„ Connects one of the solenoid valves to the Electronic Extension
Module "GIO16"
"Solenoid valve and pressure sensor"
cable (distributor)
449 629 022 0
„„ Connects one of the solenoid valves and the pressure sensor to
Electronic Extension Module "GIO13"
"Solenoid valve or pressure sensor" cable
449 752 XXX 0
"Speed signal" cable
449 535 100 0
Cabling box
"Stop light"
446 122 633 0
24
COMMENT
„„ Extension, 2 units required
„„ Length: 10 m (further lengths on request)
„„ Connection to Electronic Extension Module "GIO17", pick-up of
speed signal with cable colours Red (signal) and Brown (ground)
from the trip recorder.
„„ Other cable cores are not assigned and must be insulated.
„„ Use as required
Components
6.3
Extension for additional buzzer
COMPONENT / PART NUMBER
Buzzer
894 450 000 0
COMMENT
„„ Can output acoustic warning signals in addition to Trailer Remote
Control
This extension is not possible for vehicles with a TailGUARD
status lamp, as is the case with the prepared interface for
TailGUARD in the Daimler Econic, for example.
Connecting cable for buzzer
449 443 XXX 0
25
Installation
7
Installation
All system components – except Trailer Remote Control – can be installed
outside on the vehicle frame.
Note the respectively permissible installation position of the components in
accordance with the outline drawings.
7.1
Notes on installing the Electronic Extension Module
„„ Before you start the installation you must note the safety instructions on the
subject of ESD, Chapter "2.1 General safety instructions", page 8
„„ The cover of the Electronic Extension Module must be removed for installing/
removing the cable.
„„ Use a screwdriver (minimum length: 11 cm) to loosen the locking lugs of
housing to remove the cover.
„„ Download the outline drawing from the internet:
Outline drawing Electronic Extension Module
–– Open the WABCO INFORM online product catalogue:
http://inform.wabco-auto.com
–– Enter the part number 446 122 070 0 into the Product Number
search field.
–– Click the Start button.
–– Click the Drawings radio button.
Installation dimensions of the Electronic Extension Module in mm
26
Installation
„„ Mount the Electronic Extension Module vertically only, with the cable
openings facing the bottom or the side.
„„ Fasten the connector housing of the 8-pin plug-in connector with cable ties
on the respective bracket catch.
„„ Once the cable has been installed, mount the cover again.
„„ Make sure that all catches are firmly in place.
„„ The open side must face in the direction of the 4-pin slots.
7.2
Notes on installing the cables / dummy caps
Observe the following safety instructions for handling cables:
„„ Water that enters the cable core or cable sleeve can damage electronic
control units. Cable with open ends should therefore always be connected
in the driver’s cabin to ensure that no water can enter. Where this is not
possible, use a suitable cable joint box, e.g. AK 190. This applies in
particular to the use of the prepared brake interface on the Daimler
Econic Euro6.
„„ Plan your installation position so that cables cannot become kinked.
„„ Fasten the cables and connectors so that the plug connections are not
subjected to any tensile stress or lateral forces.
„„ Never route cables over sharp edges or in the vicinity of aggressive media
(e.g. acids).
„„ Route the cable to the connections so that no water can enter the
connector.
„„ Fasten the cable ties so that the cable is not damaged.
„„ When using tools, please note the instructions of the cable-tie
manufacturer.
„„ If the cables are too long, do not wind them up but lay them in loops.
„„ Open the yellow slider for the lock before you plug the cable end connectors
into the respective slot on the ECU frame.
If the slider is in the locked end position (condition at delivery), you can use
a size 13 open-end spanner to release the notch from either the top or from
below.
„„ Then pull out the slider up to the cover end stop by hand in order to permit
access to the connector guide.
„„ Insert the cable end (or dummy cap) perpendicularly into the corresponding
slot of the ECU.
Ensure that the correct polarity and coding (connector to slot) is adhered to.
They can only be inserted if the two parts match.
The black dummy caps for the 4- and 8-pin slots are not coded and match
the respective slot.
„„ Press the cable end into the slot with a little initial force and push the locking
slider back to its initial position. In this procedure, the hook of the slider
latches in the ECU frame. The correct latching of the slider is confirmed by
an audible "click" sound.
27
Installation
7.3
Notes on installing the ultrasonic sensors
Observe the following safety instructions for handling ultrasonic sensors:
„„ The surface to which the ultrasonic sensor is mounted must be even and
must be at least 2 mm larger than the ultrasonic sensor (this is required
to protect the drainage holes in the rear against direct high-pressure
cleaning).
„„ Ultrasonic sensors must not to be mounted in a U-profile because this
could cause reflections. WABCO recommends to mount the ultrasonic
sensors mechanically protected to avoid damage.
„„ The ability to detect objects largely depends on the ultrasonic sensors'
positioning on the vehicle. Make sure that the ultrasonic sensors are
installed at a height of at least 40 cm.
„„ No other vehicle components should be installed within the ultrasonic
sensor's range of vision.
„„ The rate of detection depends on object surfaces:
„„ Ultrasound is best reflected by smooth surfaces that are positioned at a
right angle to the sound's direction.
„„ Small and unfavourable surfaces such as meshed structures, furry
or hairy surfaces at an oblique angle to the sound's direction are not
detected so easily.
„„ Download the outline drawing from the internet:
Outline drawings for ultrasonic sensors
–– Open the WABCO INFORM online product catalogue:
http://inform.wabco-auto.com
–– Enter the part number of the desired ultrasonic sensor into the
Product Number search field.
–– Click the Start button.
–– Click the Drawings radio button.
„„ The position and number of ultrasonic sensors are determined by the area to
be monitored and the contour of the rear of the vehicle.
„„ The TailGUARD system can monitor a maximum of 6 ultrasonic sensors.
„„ Normally 15° ultrasonic sensors are used at the vehicle sides as the most
important position. These ultrasonic sensors are mounted on a vertical
surface of the rear and monitor an area between the vehicle's outside
edge at the side and the centre of the vehicle through the 15° bend in the
housing. When reversing in a narrow alley, only the area behind the vehicle
is monitored in this manner, vehicles parking next to the lane for instance,
are not.
„„ A third ultrasonic sensor with a straight housing (0°) can be positioned at the
centre to improve monitoring of this vehicle section.
„„ The figure below, showing only one of many possible ultrasonic sensor
positions, illustrates this. The yellow areas represent an example of the area
monitored by the ultrasonic sensors.
28
Installation
LEGEND
A, B
These 15° ultrasonic sensors are installed
vertically and "look" into the centre behind the
vehicle.
C
This 0° ultrasonic sensor is installed centrally
and vertically. A, B and C monitor the
horizontal level to the rear of the vehicle.
D, E
These 15° ultrasonic sensors are installed
horizontally and monitor two parallel, vertical
levels to protect the roof area.
„„ When planning the routing of cables, note the maximum length of 40 m
between the Electronic Extension Module and the last ultrasonic sensor.
„„ The ultrasonic sensor should not be installed at a distance of more than
35 cm from the rear of the vehicle.
Standard applications
!!
Application of the ultrasonic sensors is possible without extensive experience
only in the case of simple rear profiles where no vehicle parts are within the
measured area of the ultrasonic sensors.
Tail profiles, such as those of disposal vehicles, require tests by WABCO to rule
out faults and malfunctions at a later stage. In such a case, please get in touch
with your WABCO partner.
The standard applications listed in the table below are suitable for vehicles with
even rear sides.
29
Installation
FEATURES
Typical logistical
environment
TailGUARD
TailGUARDROOF
Loading ramps and large
Areas with restricted
objects, such as palettes, heights: e.g. warehouses,
vehicles and posts of
loading gates, trees and
metal or wood that vary in
roof constructions.
shape and size and are
unknown to the driver.
Number of ultrasonic
sensors (dot = Ultrasonic
sensor)
3x
Areas covered by ultrasonic
sensors
(View from top of vehicle)
TailGUARDMAX
Areas with small and / or
moving objects: e.g. forklift
loading, street signs, shops,
residential areas.
Tested to ISO 12155.
5x
6x
The entire rear of the vehicle is covered by ultrasonic sensors.
1 and 2 indicate Objects behind the vehicle.
Areas covered by ultrasonic
sensors
(side view)
Each bar represents a
distance of 50 cm.
Red: 0 to 150 cm
Yellow: 50 to 300 cm
Green: 300 to 450 cm
In close proximity (red
LEDs) the following also
applies: Each LED has
2 states, constant and
flashing. This indicates the
distance with a precision of
25 cm.
Indication on the Trailer
Remote Control
Indication
Indication
Floor height Roof height
Indication on the Trailer
Remote Control
The level with nearest
object will be displayed.
Sensitivity of the ultrasonic
sensors
Big moving objects are
detected independent
of one another and
displayed.
Objects at ground
level and roof level are
detected and displayed,
independent of one
another.
Small moving objects are
detected independent of one
another and displayed.
Distance indication
(mode)
ISO 12155 or WABCO
Standard
ISO 12155 or WABCO
Standard
ISO 12155
841 802 281 0
841 802 285 0
841 802 282 0
Ultrasonic sensor position
according to drawing
Drawings
–– Open the WABCO INFORM online product catalogue: http://inform.wabco-auto.com
–– Enter the number of the drawing into the Product Number search field.
–– Click the Start button.
–– Click the Drawings radio button.
30
Installation
7.3.1
TailGUARD
„„ Mount the outside ultrasonic sensors 446 122 402 0 / 446 122 404 0 (15°)
inclined vertically inwards.
„„ Mount the ultrasonic sensor 446 122 401 0 (0°) centrally.
„„ For better detection of hollow (protruding) ramps the central ultrasonic
sensor 446 122 401 0 can also be installed horizontally so that the ultrasonic
lobe is on end.
„„ If installed horizontally, the minimum height of the ultrasonic sensor is 0.8 m.
„„ The parameters for the installation position are configured in the TEBS E
diagnostic software.
„„ Mount the central ultrasonic sensor at max. 15 cm up or down.
Note the following installation dimensions for TailGUARD:
LEGEND
A
Ultrasonic sensor (0°) 446 122 401 0 / 446 122 403 0
B
Ultrasonic sensor (15°) 446 122 402 0 / 446 122 404 0
Do not install horizontally!
Note the following table when aligning the ultrasonic sensors:
–
Outside 446 122 402 0 /
446 122 404 0 (15° vertical)
Inside 446 122 401 0 (0° vertical)
Inside 446 122 403 0 (0° vertical)
Inside 446 122 401 0 (0° horizontal)
Inside 446 122 403 0 (0° horizontal)
*) Installation height 0.4…1.6 m
(Figure "Installation dimensions for
TailGUARD")
*) Installation height 0.8…1.6 m
(Figure "Installation dimensions for
TailGUARD")
31
Installation
7.3.2
TailGUARDRoof
„„ Mount the 5 ultrasonic sensors vertically in 2 levels.
„„ O
n the lower level (main level), mount the outside ultrasonic sensors
446 122 402 0 (15°) / 446 122 404 0 (15°) inclined vertically inwards.
„„ Mount the ultrasonic sensor 446 122 401 0 (0°) / 446 122 403 0 (0°)
centrally, maximum offset 15 cm upwards or downwards.
„„ Mount both ultrasonic sensors 446 122 402 0 / 446 122 404 0 on the upper
level.
„„ The central ultrasonic sensor of the lower level can be installed horizontally
or vertically (identical to TailGUARD).
„„ The designation has to be entered in the TEBS E diagnostic software in tab
10, Electronic Extension Module.
„„ If installed horizontally, the minimum height of the ultrasonic sensor is 0.8 m.
„„ The ultrasonic sensors of the upper level (additional level) can be
arranged vertically or horizontally.
„„ If installed vertically, the ultrasonic sensors must be installed inclined
inwards.
„„ To enable detection of roofs even where space is restricted, the upper
external ultrasonic sensors can be mounted horizontally. In this event
note that 15° ultrasonic sensors (446 122 402 0 / 446 122 404 0) are
installed inclined downwards. Object recognition then only occurs in the
range of the ultrasonic sensors; wide-range reverse monitoring system is
not provided for the upper level.
32
Installation
Note the following installation dimensions for TailGUARDRoof:
LEGEND
A
Outside ultrasonic sensor 446 122 401 0 / 446 122 403 0 (0° horizontal or
vertical)
B
Ultrasonic sensor 446 122 402 0 / 446 122 404 0 (15°) or ultrasonic
sensor 446 122 401 0 (0° upper level only)
Note the following table when aligning the ultrasonic sensors:
Upper
(additional
level)
Outside 446 122 402 0 /
446 122 404 0 (15° vertical)
Outside 446 122 402 0 /
446 122 404 0 (15° vertical)
Lower (main
level)
Outside 446 122 402 0 /
446 122 404 0 (15° vertical)
Outside 446 122 402 0 /
446 122 404 0 (15° vertical)
Inside 446 122 401 0 /
446 122 403 0 (0° vertical)
Inside 446 122 401 0 /
446 122 403 0 (0° horizontal)
*) Installation height
0.4…1.2 m (Figure
"Installation dimensions for
TailGUARDRoof")
*) Installation height
0.8…1.2 m (Figure
"Installation dimensions for
TailGUARDRoof")
33
Installation
7.3.3
TailGUARDMAX
„„ Mount 6 ultrasonic sensors vertically in two levels.
Both levels follow the same install guidelines:
„„ Mount the outside ultrasonic sensors 446 122 402 0 / 446 122 404 0 (15°)
inclined inwards.
„„ Mount the ultrasonic sensor 446 122 401 0 (0°) centrally.
„„ Distance ultrasonic sensor 1 (left) – ultrasonic sensor 2 (right): The
ultrasonic sensors on the main level must be installed with spacing of
180 cm.
„„ The main level must be installed at a height of 90 cm from the ground.
„„ The additional level must be installed at a height of 40 cm from the
ground.
Note the following install dimensions:
LEGEND
A
Ultrasonic sensor 446 122 401 0 / 446 122 403 0 (0°)
B
Ultrasonic sensor 446 122 402 0 / 446 122 404 0 (15°)
Do not install horizontally!
Note the following table when aligning the ultrasonic sensors:
Upper (main level)
446 122 402 0 / 446 122 404 0 (15° vertical)
446 122 401 0 (0° vertical)
Lower (additional level)
446 122 402 0 / 446 122 404 0 (15° vertical)
446 122 401 0 / 446 122 403 0 (0° vertical)
34
Installation
7.4
Notes on installing the Trailer Remote Control
„„ The Trailer Remote Control is mounted on the dashboard by means of the
included holder without obstructing the driver's view of the traffic.
„„ Using the included cable, the Trailer Remote Control is connected to terminal
15 and ground. A 5A fuse (not included) must be integrated into the circuit for
protection.
„„ The Trailer Remote Control power supply can be connected to the same
contact together with ELEX terminal 15, as in circuit diagram 841 802 344 0,
for exampleChapter "11.1 Circuit diagrams", page 50.
„„ A commercially available suction cup adapter can also be used instead of
the supplied screw adapter since the Trailer Remote Control is equipped with
a "Standard" mount.
7.5
Notes on connecting the speed signal
To avoid any accidents, observe the following safety instruction for vehicles with braking intervention
through TailGUARD:
„„ Speed signal faults due to incorrect or unprofessional connection can
significantly impair vehicle safety.
„„ Use of the speed signal is required for autonomous brake intervention.
„„ Use the pulse signal of the trip recorder ("v pulse output" , "trip recorder B7",
speed C3") either directly or via a corresponding vehicle interface.
„„ The speed signal must be picked up according to the vehicle manufacturer's
specifications.
7.6
Notes on installing the valves for brake intervention
Observe the following safety instructions for interventions in the braking system:
„„ Observe the specifications of the vehicle manufacturer.
„„ Deactivation when the supply pressure is too low: Switch the system off if
the vehicle's supply pressure is too low.
„„ Only intervene with the braking system if you have sufficient knowledge of
the braking system and know and can take responsibility for the effect of
your actions and all their consequences.
„„ The braking system is under pressure. Before intervening with the braking
system, make sure all reservoirs and lines are pressureless.
„„ With braking intervention via separately installed valves, the front axle
must not be braked. Make sure that the vehicle's front axle can NOT be
braked by the system. Braking intervention must only occur via the rear
axle(s).
35
Installation
„„ The valves can be grouped on a steel bracket or mounted directly on the
frame. A sensible mounting point is near the rear axle so that line lengths to
the braking system are kept short.
„„ Note the following restrictions:
„„ Connection reservoir to charging valve: Nominal width 12
„„ Connection between the two solenoid valves: Nominal width 8, max. 1 m
„„ Connection of solenoid valve to the LSV valve or relay valve: Nominal
width 8, max. 5 m
„„ Connection between reservoir and relay valve (EBS): Nominal width 12,
no longer than the supply line of the axle modulator
„„ Connection of relay valve to the two-way valves (EBS): Nominal width 12,
max. 5 m.
!!
After installation, check the system for correct function and leaks.
7.7
Notes on controlling the stop lights
„„ The stop lights must light up with every brake application in accordance
with legal requirements. This also applies for every brake application when
reversing.
„„ The electronic control unit switches on the stop lights using the reverse light
power in accordance with the TÜV approval report.
„„ Make sure that the power supply is adequately dimensioned and the
reversing lamp is secured as and additional feed for the stop lights.
„„ If it is not possible to supply the stop lights via the reversing lamp, the stop
lights can also be supplied via terminal 15, for example. For this purpose, the
TEBS E Diagnostic Software option No stop light supply via reversing lamp
(up to Diagnosis V5.00) or Reversing signal input must be set to Reversing
lamp on GIO 14-3 (as of Diagnosis V5.10) and the reversing signal must be
connected via the connection GIO14, pin 3.
Stop light fault monitoring: If a fault monitoring system is installed for the stop
light, it may need to be adjusted. If the stop lights are monitored for faults: Fault
monitoring must only be active while the pedal is operated by the driver and
LED stop lights must not be installed. If necessary, the stop light fault monitoring
of the vehicle must be deactivated.
36
Start-up
8
Start-up
Start-up requires assembly of the components on the vehicle, connection of the
diagnostic computer, supplying the system with power and starting the TEBS E
Diagnostic Software.
8.1
Training
TEBS E system training is necessary to create a new parameter set. Only after
receiving the PIN 1 are you authorised to make changes to a parameter set
using the TEBS E Diagnostic Software.
A parameter set that has been prepared in advance for parameter setting will be
sufficient in most cases and will simplify the start-up procedure considerably.
Prepared parameter sets can be requested from your WABCO partner.
Start-up using an already prepared parameter set requires PIN 2, which can be
obtained by means of a successfully completed WABCO E-Learning course.
Registration for the WABCO E-Learning course "Trailer EBS E"
(with costs)
For further information please visit out digital learning platform:
wbt.wabco.info
Please contact your WABCO partner if you have any questions.
8.2
Diagnosis hardware
Diagnosis according to ISO 11898 (CAN 5 V); via an external diagnostic port
COMPONENT / PART NUMBER
FIGURE
External diagnostic socket with yellow cap
Diagnostic Interface (DI-2) with USB port (for connection to
a PC)
446 301 030 0
CAN diagnostic cable
446 300 348 0
37
Start-up
8.3
Parameter setting in TEBS E diagnostic software
WABCO offers the electronic control unit "Electronic Extension Module" as a
universal system that must be adjusted to the respective vehicle type by means
of parameters. TailGUARD will not function without these settings.
The parameters are configured using the TEBS E diagnostic software.
For vehicle series production, prepared parameter sets can be copied into
Electronic Extension Module.
Please note that new ECUs respectively require the most recent version of the
TEBS E diagnostic software.
Start-up of vehicles with prepared interface for TailGUARD:
The current Diagnostic Software TEBS E (as of version V5.10) is required.
The Electronic Extension Module requires a new firmware, which you can
obtain via http://wabco.info/i/49. Use the System => ECU-Update menu to
install this firmware.
User guidance in the TEBS E diagnostic software is based on the required
configuration steps. Operation of the software is self-explanatory and
comprehensive assistance is also provided within the software.
Ordering the TEBS E diagnostic software
–– Open the myWABCO website:
http://www.wabco-auto.com/en/aftermarket-services/mywabco/
Help on logging in can be obtained by pressing the Step-by-step
instructions button. After you have successfully logged in, you can
order the TEBS E diagnostic software via myWABCO.
Please contact your WABCO partner if you have any questions.
Vehicles with a prepared interface for TailGUARD:
For systems with a prepared interface for TailGUARD in the vehicle, a
parameter file (ECU file) is available that is preconfigured to the extent that
only the sensor configuration needs to be adjusted. The file is stored in the
default read directory of the Diagnostic Software when it is installed; the file
name is "TailGUARD_Truck_and_Bus_ESA-R.ECU".
Offline Parameter setting
Defining a parameter set is performed directly on the vehicle because the
configured function can be tested straight away. However, a parameter set can
also be prepared without a vehicle and stored on the PC for later use.
8.4
Functional test
Setting the parameters is usually followed by the functional test. You can
only perform the function test (EOL test) if you have taken part in the TEBS E
training course.
All tests are carried out via the Start initial start-up menu. The following test
steps are only carried out if "autonomous braking" was defined in the parameter
setting.
38
Start-up
8.4.1
Electronic Extension Module pressure test
The TEBS E Diagnostic Software controls the solenoid valves and measures
the pressure regulation by means of a pressure sensor (braking via separate
valves) or controls a brake request and checks the vehicle’s response
(braking via prepared interface for TailGUARD).
8.4.2
Stop light control
This test measures the correct voltage via the reverse light and the stop light
switch and tests the stop light actuation via TailGUARD.
8.4.3
Measured value speed signal Electronic Extension Module
This test evaluates the trip recorder speed signal and the tester must confirm
that the speed indicated in the diagnostic software matches the actual speed.
For this, the vehicle must be briefly driven.
Another option is to simulate a speed on the trip recorder via diagnosis. This
measurement can also be carried out after start-up, but automatic braking is not
possible prior to this test.
8.5
Start-up of the ultrasonic sensors
Requirement: For start-up of the ultrasonic sensors and the TailGUARD system,
the ignition must be turned on and the reverse gear engaged. Additionally, the
diagnostic computer must be connected to the TailGUARD diagnostic port (with
yellow cap) and the TEBS E Diagnostic Software started.
8.5.1
Normal EOL test
Initialisation of the ultrasonic sensors is carried out in several steps as part of
the end-of-line test:
1. Learning the ultrasonic sensors
The ultrasonic sensors must be learned to detect the position on the vehicle
after installation.
If the start-up process (menu Start-up => Start) was started, the test of the
ultrasonic sensors is started automatically, otherwise the test can also be
started as follows:
–– In the TEBS E Diagnostic Software, click Measured values => TailGUARD.
–– In the TailGUARD window, click on the Start start-up button – depending on
the respective system configuration the positions of the ultrasonic sensors
are assigned automatically or the TEBS E Diagnostic Software prompts you
to cover the ultrasonic sensors one after the other, where it is essential to
adhere to the following sequence:
Main level: 1-left 2-right 3-middle
Additional level: 4-left 5-right 6-middle
ÖÖ The ultrasonic sensor to be covered flashes.
ÖÖ When the ultrasonic sensor was detected and the system is
parameterised with automatic brake intervention, the stop lights flash and
the next sensor to be learned flashes in the figure (window TailGUARD).
–– Briefly cover the ultrasonic sensor until it is detected by the system.
ÖÖ Now the next ultrasonic sensor that needs to be covered flashes on the
diagnosis monitor.
39
Start-up
ÖÖ The procedure is repeated until the last ultrasonic sensor was detected.
–– Follow the instructions on the monitor.
2. Reflection test
After the ultrasonic sensors are learned, a test is performed to determine
whether reflections occur and the ultrasonic sensors incorrectly detect objects
installed on the vehicle as obstructions.
For this test, an area of 2.5 m behind the vehicle and 0.5 m to the side of the
vehicle must be kept clear.
If the system now incorrectly detects an object, press the button Mask
reflections to mask these reflections.
Another measurement is then made to determine whether reflections of other
objects have to be masked.
If objects are still detected, the ultrasonic sensors or attachment parts must be
positioned differently.
3. Test body detection
If the system is fault-free, an object test is performed.
–– For this purpose, place a test specimen, e.g. a plastic pipe (drain pipe, 75
mm diameter), which is higher than the installation height of the ultrasonic
sensors at a distance of 0.6 m (0.1 m) in the area behind the vehicle.
–– Follow the instructions of the diagnostic computer.
–– Repeat the object test with the test specimen placed at a distance of 1.6 m
(+/-0.2 m).
–– Follow the instructions of the diagnostic computer.
–– Confirm the position of the objects with the button Start measurement.
ÖÖ If the test specimen is detected properly, the End-of-Line bit in the
Electronic Extension Module is deleted and the system is fault-free. The
start-up was successful.
ÖÖ If the test was not successful, either the ultrasonic sensors are being
learned in the wrong position or the parameters for the ultrasonic sensor
distance were not entered correctly.
–– Check the parameters or the installation position of the sensors and repeat
the test.
4. Sensor sensitivity settings
–– In the diagnosis, click on System => Parameter.
The settings are made via the tab (10) Electronic Extension Module (System =>
Parameter).
Fine adjustments
The fine adjustment can be implemented within the range from 90% to 130%.
This may be necessary if the selected sensor sensitivity must be adjusted a
little. This chiefly concerns vehicles with complex rear body structures.
Sensor sensitivity
The following settings are possible in the area Sensor sensitivity:
40
Start-up
„„ Sensitive: High detection capability in close proximity (as delivered).
Recommended sensor sensitivity for the upper sensor level with
TailGUARDMAX and for TailGUARD with low sensor spacing ( < 1.8 m).
„„ Standard: The ultrasonic sensor sensitivity is reduced a little at close range
to mask out objects that are permanently attached to the trailer and can
cause reflections (rubber buffers, etc. for instance). This setting should be
used with TailGUARDRoof for the top two ultrasonic sensors.
„„ Ground level: The ultrasonic sensor sensitivity is reduced a little at long
range to mask out reflections caused by objects on the ground (curbs for
instance). This setting should be used if the ultrasonic sensors are installed
lower than 50 cm (e.g. for the lower sensor row with TailGUARDMAX).
!!
For vehicles with problematic detection rates, WABCO recommends repeating
the settings in the open (without reflections from walls or other vehicles).
8.5.2
Reduced EOL test
Under Options => Settings => Test options in the diagnostic software, test steps
can be deselected under the following conditions:
Requirements for deselecting the object test
„„ The system has already been successfully adapted and tested on many
vehicles of identical design.
„„ The distance between the left and right ultrasonic sensor is 1.6 - 2.4 m.
„„ With 3 ultrasonic sensors the middle ultrasonic sensor must be positioned
centrally. The maximum deviation from the centre axis is 30 cm.
„„ The installation depth of the ultrasonic sensors is max 35 cm.
Deselecting the reflections test
If you have sufficient experience with TailGUARD on a recurrent vehicle type,
the test for reflections can also be simplified.
After carrying out the test for the first time, the interference echo values must be
written to a file (provided interference echoes were found). The content of this
file is then copied into the ECU file and transferred to the vehicles that follow.
41
Operation
9
Operation
To avoid any accidents, observe the following safety instructions for operating the vehicle and as
information for the driver:
„„ Risk of injury due to system failure in extreme weather conditions: Extreme
weather conditions e.g. heavy rain or snowfall, can lead to the restricted
functionality.
„„ Objects with very soft surfaces cannot be detected under all
circumstances.
„„ TailGUARD is a reversing assistance system that helps the driver
while reversing by alerting him to approaching objects and braking
independently to prevent a collision when this becomes necessary.
„„ The driver, however, remains fully responsible for vehicle movement and
any damage that results from operating the vehicle.
„„ WABCO cannot hold liable for an accident that is caused despite of using
this system; this is a support system only.
„„ TailGUARD does not release the driver of his obligations under legal or
company regulations, such as support of reversing by a person giving
directions.
To avoid any accidents, observe the following safety instructions for vehicles with braking intervention
through TailGUARD:
„„ Because the stopping distance becomes longer with heavily laden vehicles
- in particular when it is equipped with EBS - the settings (parameter
setting / pressure limiting valve) must enable sufficient deceleration for the
fully laden vehicle.
„„ Note pulsed braking when reversing too fast:
„„ TailGUARD can assist only with reversing speeds below max. 9 km/h.
„„ TailGUARD will trigger short brake pulses when a critical speed is
reached to alert the driver.
„„ If the driver accelerates further, TailGUARD deactivates itself and
outputs a fault message.
„„ In the case of EBS vehicles with brake intervention via separately
installed valves, ABS functions are not available during TailGUARD
braking. Even at the low speed range at which TailGUARD is active, the
wheels might lock on slippery surfaces.
„„ Speed signal faults due to incorrect or unprofessional connection can
significantly impair vehicle safety.
„„ Vehicles with a prepared interface for TailGUARD: TailGUARD may not
brake if the vehicle’s EBS system has a fault.
42
Operation
9.1
Instructing the driver
!!
Do not counteract TailGUARD braking with the accelerator pedal.
Take your foot from the accelerator pedal as soon as the system detects an
object (audio signal and distance indication via the Trailer Remote Control is
initiated) so that the system does not brake against the engine.
This system description is primarily directed at vehicle manufacturers and
workshops.
Although TailGUARD is easy to operate and does not require any previous
knowledge, the operator must be instructed by the vehicle manufacturer or the
retrofitting workshop.
WABCO recommends to hand over information from this chapter to the vehicle
manufacturer or driver or to enclose it with the operating instructions of the
vehicle.
Trailer Remote Control – operating instructions (non-verbal)
815 990 212 3
–– Open the WABCO INFORM online product catalogue:
http://inform.wabco-auto.com
–– Enter the document number 815 990 212 3 into the Product
Number search field.
–– Click the Start button.
–– Click the Publications radio button.
9.2
Activating the system
TailGUARD is activated by shifting into reverse gear. Depending on the
parameter setting, the system is also activated when the vehicle starts rolling in
neutral gear.
If a Trailer Remote Control is installed:
Following a system check, a short beep tone and the yellow and red LEDs
lighting up signals operational readiness to the driver on the Trailer Remote
Control. Then the distance is indicated via the LEDs. If no object is detected, the
bottom row of green LEDs is lit
Vehicles with a prepared interface for TailGUARD:
Activation is indicated by the measured object distance being displayed in the
instrument panel.
!!
The driver will only be assisted by TailGUARD if the activation messages were
signalled when the reverse gear was engaged.
43
Operation
9.3
Deactivation of the system
The function is deactivated by:
„„ driving forward
„„ reversing speed > 12 km/h and/or supply pressure lower than 7.3 bar
„„ temporary deactivation by means of Trailer Remote Control Chapter "9.4
Operation via the Trailer Remote Control", page 44
„„ temporary deactivation by means of an optional external button
„„ permanent deactivation of the function by means of an optional external
button (pressing longer than 2 seconds)
„„ engaging the reverse gear twice within 1-3 seconds (configurable)
„„ a fault
All deactivations are effective until the reverse gear is engaged again.
9.4
Operation via the Trailer Remote Control
ITEM
44
DESCRIPTION
A
Distance indication (colour bars)
B
Preselection of buzzer volume
C
Temporary TailGUARD deactivation
+
Increase volume
-
Decrease volume
Operation
9.4.1
Indication
Objects within the monitored area are signalled by colour bars on the Trailer
Remote Control
Each lit bar represents a field of 50 cm in length in which the object is located.
„„ Red (top 3 bars): 0 to 150 cm
„„ Yellow (central 3 bars): 150 to 300 cm
„„ Green (bottom 3 bars): 300 to 450 cm
In close proximity (red LEDs) the following also applies: Each LED has 2 states
- constant and flashing. The permanently lit LED represents the distance of
25 cm, the flashing one 50 cm.
9.4.2
Acoustic warnings
!!
Acoustic warnings are not permitted as exclusive means of indicating distance
because system faults are not clearly identifiable.
9.4.3
DISTANCE TO OBJECT
ACOUSTIC SIGNAL
>3m
off
3 m - 1.8 m
2 Hz
1.8 m - 0.7 m
4 Hz
< 0.7 m – automatic braking
6 Hz
< automatic (defined) braking distance
permanently on
Adjusting the buzzer volume in the Trailer Remote Control
–– Select volume control by pressing button B (> 2 seconds) until the
+/- buttons flash.
–– Press the +/- buttons to adjust the volume.
9.4.4
Deactivating TailGUARD via Trailer Remote Control
–– Press button C.
ÖÖ TailGUARD is deactivated until the reverse gear is engaged again.
45
Operation
9.5
Distance indication
DISTANCE TO OBJECT
TRAILER REMOTE
CONTROL / BUZZER
>3m
Green
off
3 m - 1.5 m
Yellow
2 Hz
1.5 m - 0.7 m
Red
4 Hz
< 0.7 m – automatic braking
6 Hz
< automatic (defined) braking
distance
permanently on
Activation check after switching on
ignition (only if v < 1.8 km/h)
0.5 s on
Activation check after reverse gear
is engaged
Standard fault – first indication for
TailGUARD activated via reversing
lamp
Standard fault – second indication
after reverse gear is disengaged
Indication of a severe fault
Communication error
46
DISPLAY IN THE
INSTRUMENT PANEL
WARNING LAMP
Progress bar indicates
the distance in cm
off
Optional indication of
brake actuation via a
symbol
Brief brake actuation,
optionally indicated via a
symbol
3 s on
Progress bar indicates
the distance in cm
off
Indication of distance is
terminated
on
Red and Yellow on
Beeper on for 3 s
Red and Yellow flash for
60 s
Beeper off
Red and Yellow on
permanently
Beeper on for 3 s
Red and Yellow flashing
for 5 minutes,
all flash briefly every
5 s, then all lamps go
out.
Operation
9.6
Detection of malfunctions
A malfunction is indicated by a red and yellow LED bar flashing or being lit
on the Trailer Remote Control. Additionally, the buzzer of the Trailer Remote
Control signals a beep tone for 3 seconds. TailGUARD is now no longer ready
for operation.
A fault is also present when the Trailer Remote Control provides no feedback at
all by means of colour bars or buzzer when the reverse gear is engaged.
Vehicles with a prepared interface for TailGUARD:
There is no distinction between minor and severe faults in vehicles with a
prepared interface for TailGUARD or which do not have a Trailer Remote
Control installed. The TailGUARD warning lamp is always on when a fault is
present.
If the TailGUARD warning lamp remains activated after the engine is started
and does not go out after its activation test that lasts for 3 seconds, turn the
ignition off and restart the engine immediately (without any delay between
turning on the ignition and starting the engine). If the TailGUARD warning
lamp still fails to go out, check the diagnostic memory of the system using the
WABCO diagnosis.
9.6.1
Minor faults
In the case of minor faults, fault messages are only output if the reverse gear is
engaged. You may be able to eliminate the fault yourself:
Detection and warning:
–– Visually inspect the ultrasonic sensors.
–– If visibly soiled, clean the ultrasonic sensors.
Additionally with "Autonomous braking" option:
–– After a longer period of being stationary (with the ignition turned on) drive
ahead a short distance until TailGUARD detects a speed signal.
–– Check the system pressure of the braking system in the dashboard.
TailGUARD only operates at pressures above 7.3. bar.
–– Wait until there is sufficient pressure in the system before you start driving.
If it is not possible to eliminate the fault with these means, you will need to visit
a workshop, such as a WABCO Service Partner, in the near future. In this case
the system needs to be examined with WABCO system diagnosis (TEBS E).
9.6.2
Severe faults
Severe faults are indicated separately if a Trailer Remote Control is installed:
Severe faults are signalled in the same way as minor faults, with the difference
that the fault message occurs even when the reverse gear is not engaged and
that it continues permanently. In this case there is a problem relating to brake
intervention.
The vehicle must be brought to a workshop immediately and with great caution.
In this case the system needs to be examined with WABCO system diagnosis
(TEBS E).
47
Workshop notes
10
Workshop notes
10.1
Maintenance information
TailGUARD is maintenance-free. In the case of system fault messages or an
assumed malfunction, the ultrasonic sensors must be checked for soiling first
and cleaned as required.
In the case of a TailGUARD fault message or failure of the indication for
operational readiness to appear (Chapter "9 Operation", page 42) after
longer periods of being stationary with the ignition turned on, the vehicle must
be driven ahead a short distance until TailGUARD detects the speed signal. The
next time the reverse gear is engaged, TailGUARD is ready for operation again.
A system diagnosis must be carried out as the next step. Apart from reading
out the diagnostic memory, this function can also be used to activate individual
TailGUARD components directly to test their function.
10.2
Diagnosis
Carry out a system diagnosis if you notice anything conspicuous or warning
lamps / indicators are lit.
Currently present as well as sporadically occurring faults are stored in the
diagnostic memory and can be displayed by means of the TEBS E Diagnostic
Software. Repair instructions are provided in the diagnostic software.
After faults have been eliminated, the diagnostic memory should always be
cleared.
10.3
Repair and replacement
Defective cables and devices must be replaced with original WABCO products
of identical part number.
If ultrasonic sensors or the control unit are replaced, a start-up procedure via
system diagnosis must be carried out again.
When replacing the electronic control unit, the existing parameter set should be
extracted, if possible, and copied to the new control unit.
The cover needs to be removed to replace the electronic control units.
–– Use a screwdriver with a minimum length of 11 cm to release the catch on
the housing to remove the cover – as illustrated in the figure below.
48
Workshop notes
10.4
Disposal / Recycling
„„ Do not dispose of electronic devices, batteries, or
accumulators together with household refuse. These must
instead be handed over to a designated collection point.
„„ Observe the national and regional regulations.
„„ Defective WABCO brake units can be returned to WABCO to
guarantee the best possible processing.
„„ Simply contact your WABCO partner if you have any
questions.
49
Annex
11
Annex
11.1
Circuit diagrams
Opening circuit diagrams
–– Open the WABCO INFORM online product catalogue:
http://inform.wabco-auto.com
–– Enter the circuit diagram number into the Product Number
search field.
–– Click the Start button.
–– Click the Drawings radio button.
Please note that the circuit diagrams are not always available in all
language versions.
CIRCUIT DIAGRAM
50
CIRCUIT DIAGRAM
NO.
Complete TailGUARD system with all options for
vehicles with ABS system.
841 802 340 0
TailGUARD system with autonomous brake
intervention for vehicles with ABS system in
accordance with TÜV approval report.
841 802 341 0
TailGUARD system with autonomous brake
intervention for vehicles with ABS system. Distance
indication via additional light. Stop light actuation via
terminal 15.
841 802 342 0
TailGUARD system – for reverse monitoring only.
841 802 343 0
Complete TailGUARD system with all options for
vehicles with EBS system.
841 802 344 0
TailGUARD system with autonomous brake
intervention for vehicles with EBS system in
accordance with TÜV approval report.
841 802 345 0
TailGUARD system with autonomous brake
intervention for vehicles with EBS system. Distance
indication via additional light. Stop light actuation via
terminal 15.
841 802 346 0
As 841 802 345 0 (EBS vehicle), but with
deactivation switch for trips with trailer.
841 802 347 0
As 841 802 341 0 (ABS vehicle), but with
deactivation switch for trips with trailer.
841 802 348 0
As 841 802 345 0 (EBS vehicle), but for vehicles
with 3 axles.
841 802 349 0
TailGUARD system for vehicles with a prepared
interface for TailGUARD
841 802 360 0
Annex
51
Annex
52
Annex
53
Annex
54
Annex
55
Annex
56
Annex
57
Annex
58
Annex
59
Annex
60
Annex
61
Annex
11.2
Pin assignment "Electronic Extension Module"
CONNECTIONS
PIN
ELECTRONIC EXTENSION MODULE
POWER, 8-pin Code E
1
Terminal 30
2
-
3
-
4
Ground
5
Terminal 15
6
-
7
-
8
-
1
Terminal 30-X2
2
CAN2 High (5 V)
3
CAN2 Low (5 V)
4
Ground
5
-
6
-
7
-
8
-
1
Reversing lamp input
2
CAN3 High (24 V)
3
CAN3 Low (24 V)
4
Ground light
5
Rear outline marker lamps / Stop light left input
6
Rear outline marker lamps / Stop light left output
7
Rear outline marker lamps / Stop light right output
8
Rear outline marker lamps / Stop light right input
1
Braking via separate valves: Pressure sensor supply
Braking via a prepared interface for TailGUARD:
Brake Relay
2
Ground
3
Braking via separate valves: Analogue input 2, pressure sensor
signal
Braking via a prepared interface for TailGUARD:
Towing vehicle braking signal
4
Braking via separate valves: Solenoid valve 2
Braking via a prepared interface for TailGUARD:
TailGUARD warning lamp
SUBSYSTEM, 8-pin code C, blue
GIO12, 8-pin code C/B
GIO13, 4-pin code B
62
4
3
2
1
Annex
CONNECTIONS
PIN
ELECTRONIC EXTENSION MODULE
1
TailGUARD status lamp / additional external buzzer
GIO14, 4-pin code B
4
3
2
Ground
2
1
3
Analogue input 1, additional TailGUARD Off button or alternative input
reverse gear signal (see separate circuit diagram 841 802 342 0)
4
-
1
Reverse signal light (optional)
2
Ground
3
-
4
Reverse signal light (optional)
1
Solenoid valve 1
2
Solenoid valve 1 ground
3
-
4
-
1
Tachograph speed signal (C3 / B7)
2
Tachograph ground
3
-
4
-
1
-
2
LIN ground
3
LIN ultrasonic sensor
4
LIN supply voltage
GIO15, 4-pin code B
4
3
2
1
GIO16, 4-pin code B
4
3
2
1
GIO17, 4-pin code B
4
3
2
1
GIO18, 4-pin code B
4
3
2
1
63
Annex
11.3
Checklist TailGUARD Truck & Bus
This checklist is used to define and plan a TailGUARD application.
Vehicle specifications
Intervention into the braking system
The system is only designed for monitoring and warning (expert approval is not required).
The vehicle should brake autonomously when approaching obstacles:
The vehicle is operated in non-public areas and does not require an expert approval.
The vehicle is operated in public areas, but does not require an expert approval.
The vehicle requires an expert approval in accordance with ECE-R13 (mandatory in Europe).
Type of braking system
The vehicle has a braking system without ABS (TailGUARD is connected to the Automatic Load-Sensing
Valve or the relay valve; expert approval must be clarified with the authorities).
The vehicle has ABS (TailGUARD is approved for all ABS systems, requires expert approval for each
vehicle).
The vehicle has WABCO EBS (TailGUARD TÜV approval report July 2015, requires expert approval for each
vehicle).
The vehicle has a non-WABCO EBS.
The vehicle has an interface prepared by the manufacturer.
Visualisation for the driver
The distance to the object is indicated through the Trailer Remote Control, as required by the TÜV approval
report.
Indication of an object is to be implemented via the rear outline marker lamps.
Display via instrument panel (only with interface prepared by the manufacturer).
Definition of the area to be monitored
The system should detect objects at a distance of approx. 70 cm above the ground.
If possible, the system should detect objects in the roof area.
If possible, the system should detect objects below 50 cm above the ground.
Information for installation
Moving vehicle parts
All protruding vehicle parts or objects carried along at the rear are known.
All movements and positions of flexible vehicle parts have been described.
Trailer operation (requires shielding the Trailer Remote Control for the towing vehicle)
It should be possible to deactivate TailGUARD on the towing manually if the trailer is hitched.
TailGUARD on the towing vehicle should be deactivated automatically if the trailer is hitched
64
Annex
Stop light control with TailGUARD intervention
Stop light is activated through TailGUARD. Type of stop light monitoring through vehicle electronics is known.
Stop light is not activated through TailGUARD (expert approval may not be satisfied).
Mechanical installation
A diagram of photo is available for the ultrasonic sensors’ positioning.
It has been clarified where the Electronic Extension Module is to be installed and all cable lengths have been
adequately dimensioned.
The Trailer Remote Control location has been defined.
Electrical installation
A vehicle circuit diagram is available for correct connections at the fuse box.
Information for integration into the braking system
Access to the C3 signal is accepted by the vehicle manufacturer or is documented in his system description.
A pneumatic circuit diagram is available for optimum integration in the pneumatic system.
All threaded connections required to integrate TailGUARD into the existing pipe system are available in
accordance with vehicle manufacturer’s specifications.
Other subjects for preparing the vehicle
The employees are qualified and the documentation "TailGUARD Truck & Bus System description" is
available.
A WABCO Trailer EBS Training with certification for PIN 1 has been completed.
A WABCO Trailer EBS Training with certification for PIN 2 has been completed and a configured parameter
set is available to put the system into operation.
A vehicle registration office is within reach and a copy of the TÜV certificate is available (only required if
TailGUARD intervenes in the braking system).
The installation has been documented with images.
A test schedule for the installed TailGUARD system is at hand.
A TailGUARD user information has been added to the vehicle operating manual.
A driver trailing is planned after TailGUARD has been installed.
65
Notes
66
industry as it maps a route towards
autonomous driving, WABCO also
uniquely connects trucks, trailers,
drivers, cargo, and fleet operators
through telematics, as well as
advanced fleet management
and mobile solutions. WABCO
reported sales of $2.6 billion in
2015. Headquartered in Brussels,
Belgium, WABCO has 12,000
employees in 39 countries. For
more information, visit
www.wabco-auto.com
© 2016 WABCO Europe BVBA – All rights reserved – 815 010 211 3 / 12.2016
WABCO (NYSE: WBC) is
a leading global supplier of
technologies and services that
improve the safety, efficiency
and connectivity of commercial
vehicles. Founded nearly 150
years ago, WABCO continues
to pioneer breakthrough
innovations for advanced driver
assistance, braking, stability
control, suspension, transmission
automation and aerodynamics.
Partnering with the transportation
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