WABCO IVTM System Description
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WABCO IVTM System Description

WABCO IVTM System Description

Tire pressure monitoring for commercial vehicles
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IVTM – TIRE PRESSURE MONITORING
FOR COMMERCIAL VEHICLES
SYSTEM DESCRIPTION

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Summary of Contents for WABCO IVTM

  • Page 1 IVTM – TIRE PRESSURE MONITORING FOR COMMERCIAL VEHICLES SYSTEM DESCRIPTION...
  • Page 3 Edition 6 This publication is not subject to any update service. You will find the current version at http://www.wabco.info/8150100453 © 2013/2015 WABCO Europe BVBA – All rights reserved. The right of amendment is reserved. Version 1/02.2013(en) 815 010 045 3...

  • Page 4: Table Of Contents

    Symbols used ....................... 5 General information ...................... 6 General safety instructions................... 6 2 Introduction ..........................7 IVTM prevents tire blow-outs..................7 IVTM reduces cost......................7 3 System Description ........................ 9 IVTM Basic Functions ....................9 IVTM at trailer-towing operation .................10 Configuration for bus and towing vehicle ..............10...

  • Page 5: Important Instructions

    Important instructions IVTM Important instructions Information and Disclaimer We assume no liability for the correctness, completeness or actuality of the infor- mation in this document. All technical information, descriptions and images are ap- plicable for the day of printing this document or respective supplements. We retain the right to any changes as a result of continuous further development.

  • Page 6: General Information

    This publication is directed at trained service technicians employed at workshops for commercial vehicles. Proper use The IVTM system is designed exclusively for monitoring the tire pressure in com- mercial vehicles. Carefully read all the safety instructions as well as all the repair and maintenance instructions in this document before you start maintenance work, repairs or replac- ing parts.

  • Page 7: Introduction

    Full tire pressure checks usually take around 30 minutes per vehicle, IVTM can help reduce or even eliminate this extra work. So IVTM minimises cost and makes a great contribution to safety on our roads. IVTM allows employment of Super Singles instead of twin wheels.
  • Page 8 Return of Investment Calculator Using our Return of Investment Calculator on our website http://www.ivtm.com http://www.wabco-auto.com, you are able to calculate use your IVTM offers within a few stages. You can either enter your individual application data or use standard profiles for determining which savings you are able to achieve using the IVTM.

  • Page 9: System Description

    An IVTM ECU can receive and process data from up to 16 wheel modules each and further ECUs. Dual tires will each be fitted with individual sensors. Sensor pressure range is between 2 and 14 bar corresponding to nominal pressure values from 3 to 10.5 bar.

  • Page 10: Ivtm At Trailer-Towing Operation

    Trucks, buses or articulated buses are equipped with the ECU 446 220 012 0. Display IVTM display 446 221 000 0 is used for the retrofitting of the display and operation devices. Original equipment, however, will often address a central computer via CAN with the latter controlling indication of the integrated dashboard-mounted dis- play.
  • Page 11 ECU needs to be connected to vehicular CAN Bus for this purpose too. Circuit diagrams Detailed circuit diagrams are – as are the outline drawings of the components – available on the Online Product Catalogue INFORM at http://www.wabco-auto.com. Enter wiring diagram product number for opening the file: •...

  • Page 12: Configuration For Trailers

    System Description Configuration for trailers Transmission types Trailer and towing vehicle must be equipped with IVTM for displaying trailer IVTM data in the diver's cab. Alternatively, trailer data can display in towing vehicle only then when it is equipped with an integrated display. When the trailer is also equipped with TCE or TEBS then data transfer can be made to the towing vehicle central computer via CAN.
  • Page 13 System Description IVTM IVTM with TEBS D, TEBS E or TCE Installation in a vehicle with TEBS D, TEBS E or TCE is simple because this merely has to be plugged into pre-assembled cables. Other systems would require open wiring that needs to be enclosed by protective housing.
  • Page 14 Connection is made with cable position 3 (449 377 ... 0 / 449 378 ... 0). The ISS output must not be used and needs to be set to 0 km/h. IVTM diagnosis through diagnostic cable 446 300 329 2 via TEBS diagnostic port.

  • Page 15: Certificates

    Certificates for mounting and additional mounting of IVTM are available, which sig- nificantly facilitate approval of vehicle registration papers. The certificates are not part of this document but can be retrieved from the WABCO online product database INFORM at http://www.wabco-auto.com. To retrieve them, enter the search term in the "Index"...

  • Page 16: Components

    IVTM can be interrupted in its function if other devices or systems in the vicinity are also transmitting in the area of 433 MHz. These can be radio sets, radio remote controls (e.g.
  • Page 17 Components IVTM Depending on rim crank, use of the normal module according to Figure 4-1 or the called L-shape or T-shape version is recommended. For details see Table 4-1 d also the chapter on configuration (see chapter 3.3, page 10 and see chap- ter 3.3, page 10).
  • Page 18 IVTM Components Application WABCO Hole, wheel Bolt circle Angle Figure number bolt Ø Towing vehicle: Front axle, load a 960 731 061 0 32 mm 335 mm 33° Twin tires, Super-Single 960 731 073 0 26 mm 285,75 mm 70°...

  • Page 19: Electronic Control Unit (Ecu)

    This number is imprinted on the wheel module when commissioning. Assignment between wheel and wheel module must be absolutely maintained tire- change procedure. If tires were confused, IVTM could not set off required alarm when a wheel with low pressure has been wrongly assigned to an axle on which...
  • Page 20 IVTM Components Mode of function The ECU immediately recognises all changes from programmed nominal tire pres- sure values by combined comparison with threshold pressure values and pressure changes. Incorrect values of tire pressures are already displayed before departure (if ECU is permanently powered).

  • Page 21: The Display

    4-6: Display 446 221 000 0 The display serves for showing and checking all necessary information on the IVTM system. It is conne cted to ECU via CAN bus. Supply voltage may be 12 or 24 volt. All tire pressures can be queried by push of a button (Manom eter button).
  • Page 22 Stop light / warning lamp 2 amber Warning lamp 1 green Table: 4-2: Cable set assignment Connection to +12 V/24 V and ignition to be fused through 5 ampere fuses. Since IVTM has low current consumption an existing fused circuit can be used.
  • Page 23 Components IVTM Cable set towing vehicle, 7-p The 7-pin wiring is implemented to match cable set 894 607 390 0, see figure 4-7 "Wiring of towing vehicle", page 22. Pin assignment on the connecting plugs corre- sponds to the 5-pin variant. In addition, either connection to stop light (for synchro- nising with trailer ECU) and warning lamp or connection of two warning lamps is possible.

  • Page 24: Connecting Tube

    Connecting tube The wheel modules must be continuously connected to tires for sensing tire pres- sures. Use WABCO pre-assembled PA tubes for this purpose. The connection does not have to be disconnected for inflating the tires as valves for inflating the tire are located on the wheel modules.

  • Page 25: Operation

    Operation IVTM Operation In this chapter, the handling of the IVTM system is described by means of the WABCO display. Additionally installed warning lamp indicates the same warning like the display. Please refer to manufacturer's operating instructions when operating by means of an integrated display.

  • Page 26: Checking Pressure Values

    IVTM Operation After initialisation, if tire pressures are within specified values, the following picture will show for a few seconds: fig. 5-2: System check The display will change to normal mode if all pressures are correct. fig. 5-3: Normal mode...

  • Page 27: Display Of Faults

    The display will switch back to normal mode if no button has been pushed for a period of 20 seconds. Display of faults When the IVTM detects a fault, an amber or red warning lamp illuminates. Proceed as follows to display the type of fault on the vehicle: – Push right button a fter lighting up of amber or red warning lamp.

  • Page 28: Adjusting Tire Pressures

     If leakage warning has been active, reset on display and stored on diagnostic memory of t he ECU. Display of System Errors If "IVTM" is represented crossed out then there are one or more system faults. System should be checked in the workshop.
  • Page 29 Additional information see chapter 7 "Workshop instructions", page 39. System failure System faults are given if dis play shows crossed-out "IVTM" only. IVTM does not signal warning messages for any wheel. The driver must check the tire pressures manually o n the wheel.

  • Page 30: Operation Via Smartboard

    IVTM Operation Opera tion via SmartBoard IVTM can be controlled via the WABCO SmartBoard. The SmartBoard can be used to operate IVTM as a stand-alone variant for trailers. – On the SmartBoard select the functio nal group "Tire pressure monitoring".

  • Page 31: Installation

    Installation IVTM Installation In this chapter, you will learn how the IVTM is installed your vehicle. Observe all safety instructions when carrying out assembly work on the vehicle. WARNING Regulations / Instructions – Observe the occupational health and safety regulations of the respective coun- try, the workshop as well as the vehicle manufacturer's instructions.

  • Page 32: Mounting The Wheel Modules

    IVTM Installation Mounting the wheel modules The vehicle does not need to be jacked up when only four wheel nuts are removed. Assembly prep aration – Read the following chapter, see chapter 4.1 "Wheel module", page 16 and see chapter 4.5 "Connecting tube", page 24.
  • Page 33 Installation IVTM Also consider that the PA tube disappears to 20 mm in the connection. For this purpose, the PA tube should be cut 20 mm after the marking. Use a suitab le right-angled cutting tool, such as those that are also used for shortening plastic brake lines (see illustrations below).

  • Page 34: Mounting The Ecu In Bus / Towing Vehicle

    These will not remain tight under permanently existing pressure. Use flexible valve extensions with tightening clamps (e.g. alligator) or WABCO valve extensions 960 731 805 0 instead. fig. 6-5: Twin wheels (outer wheel) fig.

  • Page 35: Wiring In Towing Vehicle/Bus

    – Tighten ECU to bracket using torque of 15±1.5 Nm. Wiring in towing veh icle/bus Proceed as follows to install the wires of the IVTM into the bus or the towing vehi- cle: – Read the chapter, see chapter 4.4 "Connecting cable", page 21.

  • Page 36: Mounting The Ecu In The Trailer

    – Tighten ECU to bracket using torq ue of 15±1.5 Nm. Wiring in trailer Proceed as follows to install the wires of the IVTM into the trailer: – Read the chapter, see chapter 4.4 "Connecting cable", page 21. – Select th e appropriate circuit diagram according to the chapter, see chapter 3.4...

  • Page 37: Start-Up

    – Install the cable joint box if required, such as, for example, the WABCO VCS cable joint box 446 010 092 2. Also su itable is the AK 192 of Apparatebau Kirchheim-Teck GmbH &...
  • Page 38 – Print the commissio ning protocol. – Print the vehicle type plate on self-adhesive tin foil (WABCO no. 899 200 922 4). – Affix vehicle type plate to protected, easy readable location on the vehicle. – End the start-up in the diagnostic software.

  • Page 39: Workshop Instructions

    – Wheel nuts must be tightened with torque specified by vehicle manufacturer. – Check the tightness of the wheel nuts after 500 km. Maintenance IVTM system is maintenance-free. Only when the display indicates a malfunction, fault finding must be performed with diagnosis.

  • Page 40: Diagnosis

    Workshop instructions Diagnosis Diagnostic components The IVTM diagnostic cable 446 300 348 0 is used for diagnosis on towing vehicle When carrying out diagnosis on trailers, please extract the produ ct number of the required diagnostic components from the chart.

  • Page 41: Wheel Changes

    Workshop instructions IVTM Wheel Changes Due to the external fixation of the wheel modules on the wheel bolts after wheel change a new sensor is not needed. It is only to be ensured, that after wheel ex- change the wheel module is fitted exactly to the same position as before.

  • Page 42: Replacing Pa Tubes

     With damaged thread, replace the complete wheel module. – Screw the new V203 connection into the th read of the wheel module. A new V203 connection can be obtained using the WABCO product numbe 893 770 005 2. fig. 7-1: VOSS SV 203 connection –...

  • Page 43: Replacing Wheel Module I With Wheel Module Ii

    You will obtain further information on the use of wheel module II on our w ebsite p://www.wabco-auto.com => WABCO online product database INFORM. Ente search term "IV TM" in the input field. Open the application table. In this table, the rims are sorted according to their attachment location, size and manufacturer.

  • Page 44: No Reception Of The Wheel Module

    IVTM Workshop instructions No reception of the wheel module Battery life Wheel modules get their power supply via an internal lithium battery. In reason of the mechanical demands and tightness, the battery is coated within the wheel module and cannot be exchang ed.
  • Page 45 Workshop instructions IVTM No. Description Default Result Warning "no reception" is not active but stored in diagnostic mem- ory (failure shown blue in diagnosis) Warning "no reception" is active (failure shown in red in diagnosis) Warning "no reception" is given for one wheel module Warning "no reception"...

  • Page 46: Disposal

    WABCO strives to protect the environment. As with other old devices, all components can be returned to WABCO. Speak to your WABCO sales partner about this...
  • Page 48 With sales and efficiency of commercial vehicles. Founded nearly 150 of $2.5 billion in 2012, WABCO is years ago, WABCO continues to headquartered in Brussels, Belgium. pioneer breakthrough electronic, For more information, visit mechanical and mechatronic www.wabco-auto.com...

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