EB+ User Guide - Well Interparts Online
Contents
1. 1V3S 83 0 JHL NI ONILIIS Q3M3IA SI 1 Z N NOI LIVNI JNOO INVISNVA NOJ NO QN3ddQ NOI LONN4 NOSN3S 3snss34d S3lsvidIXOV JO 11118 11 ov wv an 40 d d I al 110 8 110 8 d o d o v xnviz Xnv i Xnv unodOo IXIA 1 0138 318 1 JHL Ni N3AI9 51 NOIIVNINS31 ONITEVO 1 N9I 3 M H NV MN 1 N2 t NN MTS pP Ng 2 St a o 5 0 JI e Un 5 LL Wiring diagram Fig 16 Wiring Diagram 911 440 001 12 Piping Diagram 4S 2M Side by Side Configuration with REV Emergency Service Fig 17 Key Item no Port No Side by Side configuration 3 axle Semi Trailer 2 line air brake system 1 Emergency Coupling 2 Service Coupling 3 Pipe Filter 4 Combined Park and Shunt Valve 352 044 352 045 5 Air Reservoir 6 Drain Valve 7 Test Point 8 Gen 2 Assembly 9 Spring Brake Chamber 10 Single Diaphragm Brake Chamber 11 Relay Emergency Valve 12 Suspension Bellows 13 Piping Diagram 4S 2M Side by Side Configuration with Trailer Control Module TrCM Emergency Service Fig 18 Key Item no Port No Side by Side configuration 3 axle Semi Trailer 2 line air brake system with Trailer Control Module Spring brake chambers 1 Emergency coupling 22. Contents EB GEN 2 Operator s guide General Components Guide System Layout Chassis Components System Diagnostics Warning Device System Check Procedure and Power Up Modes Test Procedure Diagnostic Trouble Codes DTC ECU Connector Identification Wiring diagram Piping Diagrams Multimeter Reading Recommended Maintenance Schedule Part Reference General Information 11 12 13 17 18 19 21 Your trailer has been fitted with the latest technology Haldex Electronic Braking System EB Gen 2 This system has been specifically designed to be effective reliable and easy to service The purpose of this booklet is to describe the components involved and give you sufficient information to make your use of the system easy Concept EB Gen2 Antilock Brake System ABS Electronic Load Sensing ELS CAN Controller area network ISO11992 data link computer data from and to the towing vehicle The system reacts to electrical or pneumatic signal from the towing vehicle It electronically processes those signals plus signals received from other sensors on the trailer In response to those signals the EB Gen 2 regulates pressure to the brake chambers System Description The position of the various components is shown in Tri axle layout Fig 1 The system is equally compatible with single and tandem axles The EB Gen 2 system is an integrated construction of an encapsulated Electronic Control Uni
3. These available service parts can be obtained from Haldex service centres or distributors The different parts are shown in view form in order to allow easy recognition Description OE Part Number AM Part number View Electronic Control Unit ECU 2M 5Aux Stability with Super Aux integrated ORV anticompound 820 008 001 820 008 001 2M 5Aux Stability integrated QRV anticompound 820 007 001 820 007 001 2M 5Aux integrated QRV anticompound 820 019 001 820 019 001 2M 5Aux stability anticompound 820 011 001 820 011 001 2M 5Aux anticompound 820 023 001 820 023 001 3M 5Aux kit with master and slave 820 028 001 820 028 001 1507638 Socket and cable Assy PVC ADR L 9m 814 003 132 950 800 404 L 12m 814 003 102 950 800 401 L 16m 814 003 112 950 800 402 1507638 7 Pin Plug Kit Full Trailer PVC ADR L 9m 814 004 102 950 800 411 L 12m 814 004 112 950 800 412 1501185 24N Cable Assembly PVC ADR L 6m 814 002 222 950 800 422 L 12m 814 002 202 950 800 421 L 16m 814 002 212 950 800 423 Auxiliary Cable Assembly PVC ADR L 2m 814 001 322 950 800 433 l L 7m 814 001 302 950 800 431 L 18m 814 001 312 950 800 432 Sensor Cable Assembly PUR L 2m 814 004 412 950 800 442 aM SSE E L 3m 814 004 402 950 800 441 L L 814 004 422 950 800 443 i Gen 2 Label 028 5262 09 Sensor Kit Angled inc retaining clip 950 364 503 Straight inc retaining
4. Fig 21 Sensor connector Fig 22 Earth continuity BLACK Fig 24 ILAS E connector Common Fig 25 COLAS DIN connector Fig 26 ILAS E DIN connector Checking position Correct value Remarks 21 Sensor output A B 0 2V AC Min Sensor 1A 1B or 2A 2B Sensor disconnected from ECU Wheel rotated at 1 rev 2 sec 21 Sensor resistance A B gt 1 0 2 4 kohm Sensor 1A 1B or 2A 2B Sensor disconnected from ECU 22 Earth continuity ECU EPRV 0 ohms Bracket and chassis 5 ohms 23 amp 24 COLAS Solenoid gt 79 lt 96 ohms Cable disconnected resistance 25 amp 26 ILAS E Solenoid gt 79 lt 96 ohms Cable disconnected resistance 17 Recommended Maintenance Schedule Time or Mileage Operation Check for damage whichever occurs first When hubs are removed Exciter Sensor Every 3 months or Complete System 25 000 miles 40 000 km Annually or every or Complete System 100 000 miles 160 000 km Check for wear clean and readjust Check output Perform system check out and air leakage check Perform system check out and air leakage check Check wiring and piping security and integrity Sensor Check for wear clean and readjust Check output Servicing Parts The list of available service parts are indicated on page 22 to 24 These can be obtained from Haldex service centres or distributors 18 Part Reference Servicing Parts
5. 3 4 5 6 7 8 9 Service coupling Pipe filter Trailer Control Module TrCM Air reservoir service Drain valve Test point EB Gen 2 Assembly Spring Brake Chamber eo Single Diaphragm Brake Chamber Test Point Simulator N Suspension Bellows 14 Piping Diagram 2M Side by Side with Combined Park and Shunt valve 352 046 001 Emergency Service Fig 19 EB Item no 1 Port No Side by Side configuration 3 axle Semi Trailer 2 line air brake system Spring brake chambers 1 Emergency coupling Service coupling Pipe filter Combined Park and Shunt valve 352 046 001 Air reservoir Test point 2 3 4 5 6 Drain valve 7 8 Gen 2 Assembly 9 Spring Brake Chamber 0 Single Diapragm Brake Chamber 11 Suspension Bellows 15 Piping Diagram 2M Side by side with Individual Park amp Shunt Emergency Service Fig 20 Key Item no Port No Side by Side configuration 3 axle Semi Trailer 2 line air brake system Spring brake chambers 1 Emergency coupling 2 Service coupling 3 Pipe filter 4 Shunt Valve 5 Air Reservoir 6 Drain valve 7 Test Point 8 Gen 2 Assembly 9 Spring Brake Chamber 10 Single Diapragm Brake Chamber 11 Suspension Bellows 12 Relay Emergency Valve REV 13 Park Valve 14 Test Point Simulator 15 Single Check Valve optional 16 Multimeter Reading
6. vehicle according to the road surface conditions DO NOT apply and release the brakes by pumping the brake This is known as Cadence braking and can have a detrimental effect on vehicle braking Lining Wear Sensing LWS EB Gen 2 Lining wear is a device that allows multiple lining wear indicators LWI to be connected to a single analogue input AUX 4 on the Gen 2 ECU Gen 2 Lining wear device can be installed on all types of towed vehicles were provisions are made in the brake pads The product provides lining wear indication without the need to remove wheels as required on disc brakes via the Gen 2 diagnostic tools Info Centre or DIAG The device connects to specified sensors from the brake pads and when a brake lining has reached its wear limit the sensor signals the EB Gen 2 Lining wear device which activates the EBS warning lamp indicating a fault EB Gen 2 Stability EB Gen 2 Stability is an advanced Trailer Roll Stability function that senses when the trailer is near to a rollover condition and automatically applies the trailer brakes to slow the vehicle combination down It will help to reduce the likelihood of trailer rollover BUT IT WILL NOT PREVENT ROLLOVER and should be used as an aid to normal good driving practice The stability function is a SAFETY BACK UP system the same as anti lock braking function It uses a lateral accelerometer to determine the level of cornering and as part of its op
7. 1325 310 110 Fax 44 1525 311 834 E Mail info GBAy Haldex com Haldex Brake Products Ltd Redditch Tel 44 1527 499 499 Fax 44 1527 499 500 E Mail info GBRe Haldex com USA Haldex Brake Products Corp Kansas City MO Tel 1 816 891 2470 Fax 1 816 891 9447 E Mail info US Haldex com www haldex com
8. 31892 YOSNIS Z A C 19 27 NOUS LN 2 NOY lt HeH LT 05135 COPS Kr m b 10535 x nese ain C L Bil MEG ium WAY GIN Nid SL EEEREN Ee H EH BHH HEHEHEHEHE n 12 ER Xnv Ol 031114 38 NYO NOSN3S 38055354 NMOHS SV 30010 WnWINIW 110 OOL dMvi Y 113 301 Q3AONddYV LON SI 010 3105 3I 03553 5 30010 38 iSnW 93 01 A11v21312313 03123 2 5010 3105 TIY ONTN33NI9N3 01 23439 S13A31 N3H91H ONIMINOIY SNO 1 217199 NOJ OL 3079 3180 0339X3 OL LON 108100 1 1 ANY Z N HOLMS JIXY Wr 1330X3 LON ISAW Nid SL 86021081 Ln MO NvZ 5811051 OL XO NO 12NRnf H19N31 318YO X3Q7VH A8 03114405 SNOIIOQMISNI 934 SV 38 ISAN u31340331309V 40 NO IVIN3ISO 9 11 S XAY OINI 03990114 38 1SnW 031114 31 H313 0331399Y NOILONNA ALITISVIS 1108 Lm 11111111 see oe SS Se x ian ext 25 Xs 5013 33 31859 XIV NB lt 5 3 Hot D CSD GX XT Qe b dX CHSO N3349 NO B XIN NO M sS n 3A Y XY pum ania fd 0 i a Uh ui NMONH 9 8811 aba un li i 39v 358 05 ETE 1 45491 O xapi JitHM M A3M YOLOSNNOD SOSN3S E N QuvM3O3
9. 497 E Mail info CAQHaldex com China Haldex International Trading Co Ltd Shanghai Tel 86 21 5240 0558 Fax 86 21 5240 0177 E Mail info CN Haldex com France Haldex Europe SAS Weyersheim Strasbourg Tel 55 5 88 68 22 00 Fax 55 5 88 68 22 09 E Mail info EUR Haldex com Germany Haldex Brake Products GmbH Heidelberg Tel 49 6221 7030 Fax 49 6221 704400 E Mail info DE Haldex com Hungary Haldex Hungary Kft Szentl rinck ta Tel 56 29 651 500 Fax 56 29 651 301 E Mail info HU Haldex com India Haldex India Limited Nasik Tel 91 255 2380094 Fax 91 254 2480729 E Mail info IN Haldex com 000700341_GB 02 2009 Reddicth Italy Haldex Italia Srl Biassono Milan Tel 4 39 039 47 17 02 Fax 59 059 27 54 509 E Mail info IT Haldex com Poland Haldex Sp z 0 0 Praszka Tel 48 34 350 11 00 Fax 48 54 550 11 11 E Mail info PL Haldex com Russia OOO Haldex RUS Moscow Tel 7 495 747 59 56 Fax 7 495 786 59 70 E Mail info RU Haldex com South Korea Haldex Korea Ltd Seoul Tel 82 2 2636 7545 Fax 82 2 2656 7548 E Mail info KR Haldex com Spain Haldex Espa a S A Parets del Valles Barcelona Tel 34 93 573 10 30 Fax 34 93 573 07 28 E Mail info ES Haldex com Sweden Haldex Brake Products AB Landskrona Tel 46 418 47 60 00 Fax 46 418 47 60 01 E Mail info SE Haldex com United Kingdom Haldex Ltd Newton Aycliffe Tel 44
10. S Fig 4 On foot brake application ABS function only Chassis Components Electrical connections ISO 7638 o iB e ISO 1185 24N Fig 5 Item Description Notes 1 EB Gen 2 Label 2 1507638 7 Pin Socket assembly 3 Safety backup cable 1501185 24N 4 EB Gen 2 Info Centre side of vehicle connection 5 EB Gen 2 ECU and EPRV s assembly 6 Sensor assembly 7 Exciter 8 COLAS Aux 1 2 or 3 9 ILAS E Aux 1 20r3 10 Lining Wear Sensing LWS Aux 4 ONLY 11 Gen 2 Stability External Sensor Assembly Aux 5 ONLY Note Aux to be set in line with DIAG System Diagnostics An important feature of the EB Gen 2 system is that it provides an extensive on board diagnostic capability The system displays a range of codes which allow rapid diagnosis of the problem should one occur Diagnostic communication is in accordance to 15011898 using Keyword KWP2000 protocol and is accessed by either the 1507638 7 pin connector which uses pin 6 and 7 as a CAN data bus using ISO Interface Assembly 815 018 001 or optional side of vehicle connector or directly to ECU Fig 7 Any suitable device connected to this CAN data bus may read diagnostic information An Gen 2 Info Centre can be connected permanently to the ECU s diagnostic DIAG connection While the ECU is powered information is transferred to the Info Centre s memory which can be recalled Power is supplied from t
11. ary It is dedicated to alert fault in Lining Wear Sensors Colas etc It is ADR approved 21 Haldex offers proprietary vehicle technology solutions to the global vehicle industry within specific niches We focus on products to improve safety the environment and vehicle dynamics We are enhancing our competitive capabilities and building long term customer relationships through high performance low total costs to the customer through the product s service life ethical business practices and commitment to long term partnerships Haldex operations are divided into four business areas Commercial Vehicle Systems Hydraulic Systems Garphyttan Wire and Traction Systems 2009 Haldex AB This material may contain Haldex trademarks and third party trademarks trade names corporate logos graphics and em blems which are the property of their respective companies The contents of this document may not be copied or displayed for commercial purposes without our prior written consent Commercial Vehicle Systems Austria Haldex Wien Ges m b H Vienna Tel 43 1 8 69 27 97 Fax 43 1 8 69 27 97 27 E Mail info AT Haldex com Belgium Haldex N V Balegem Tel 32 9 363 90 00 Fax 32 9 363 90 09 E Mail info BE Haldex com Brazil Haldex do Brasil S o Paulo Tel 55 11 213 55 Fax 55 11 503 49 515 E Mail info BR Haldex com Canada Haldex Ltd Guelph Ontario Tel 1 519 826 7723 Fax 1 519 826 9
12. clip 950 364 506 EB Info Centre PVC ADR L 6 5 m Cable 815 001 131 8 Cable 815 001 151 L 2 24 m Cable 815 001 141 Side of Vehicle Installation PVC ADR L 20 5 m Cable 815 014 011 L 6 5 m Cable 815 013011 19 Part Reference Description Side of Vehicle Diagnostic Cable Part Number Assembly 26 5m PUR 814 010 101 2 5 PUR 814010 111 1 5 PUR 814 010 121 1 15m PUR 814 010 131 Blanking Plug ECU positions 52 S2B AUX 1 5 003 8700 09 1507638 DIAG Cable EB 1507638 Diagnostic Cable 815 018 001 DIAG PC Interface Interface Pod dongle and Software c w Instruction Manual USB interface and dongle 815 028 001 Cable ECU to Interface L 6 5m 814 001 601 15m 814 001 611 20m 814 001 621 Cable Side of Vehicle to Interface 6 5 814011 001 L 15m 814011011 Lining Wear System L 2m AUX cable Standard 815 015 001 Blanking Plug Std Version 027 5260 09 EB Gen 2 Stability 815 012011 External Lateral Accelerometer Info Point 815 021 001 27m Cable 815 021 011 18m Cable Soft Docking Full system kit with Optical and acoustic aids 815 024 001 Sensor Adjusting Tool 042 708 309 20 General Information Braking with EB Gen 2 In an emergency apply full force on the brake pedal The EB Gen 2 will be activated immediately when you fully apply the brakes and will assist you to retain steering control of your
13. eck Procedure and Power Up Modes Warning Device The warning device function depends on the 1507638 power supply used A warning device located on the driver s console of the towing vehicle is operated from the 1507638 power cable only when the EB4 Gen 2 is powered by the ignition switch Fig 9 Note If a dedicated power source is unavailable to the Gen 2 from the 1 07638 connector then system integrity will not be indicated by the cab mounted warning device As an option to the cab warning device a trailer mounted warning lamp may be provided as an auxiliary function This lamp mimics the signal to the cab warning device but will only function if the 1507638 power is connected Note The signal produced may be different to that produced by the cab device due to possible modification of the cab device by the towing vehicle System Check Procedure 1 On power up of the system the warning device must indicate one of the following sequences in order to show a fault free system OPTION A Fig 10 OPTION B Fig 11 2 During the self check procedure the system cycles the EPRV s With foot brake applied one exhaust of air from each EPRV will be audible Once these two checks are made with correct results no further checks are required If the results are not satisfactory Haldex DIAG or EB Info Centre should be used to establish the diagnosis This information is described visually in Fig 14 on page 11 Powe
14. eration it applies brief pulses of brake pressure during normal cornering even below a level at which a rollover may occur These pulses may be noticeable to a driver but will reduce in number after the system has learnt the vehicle combinations roll characteristics and are part of the normal operation This learning process will be repeated every ignition cycle if the load is changed or if an axle is lifted or lowered Traction Assist using ILAS E Traction assist is made operative by a 24v constant or intermittent supply to the yellow wire in the 3 core auxiliary cable connected to AUX 2 or AUX 3 and programmed as ILAS E Front On request for traction assist front axle lifts The front axle drops when either e The vehicle speed exceeds 30kph or e The suspension pressure reaches more than 130 96 of the laden bag pressure Soft Docking Soft Docking when linked to the Haldex EB EB Gen 2 system will apply brakes automatically when reversing into a loading bay The system will reduce vehicle speed to prevent significant damage to the vehicle and the dock by timely application of the brake pressure when reversing The braking is indicated by sensing of 1 meter distance and wheel speed sensing The Gen 2 system will then command the brake apply Info Point With an illuminated spot the Info Point will instantly show if the trailer has a fault in the braking system The Info Point connects to Gen 2 Auxili
15. g restricted piping EPRV 21 HOLD OC Modulator 21 hold solenoid open circuit Check for kinks and blockages etc Incorrect EPRV 21 DUMP OC Modulator 21 dump solenoid open circuit piping Wiring EPRV 21 HOLD SC Modulator 21 hold solenoid short circuit Modulator fault Sensor wiring crossed DRIVE permanently energised across an axle Diagnostic Trouble Codes DTC Displayed Possible Causes Reservoir Pressure Transducer Group RESR SC RESR OC Reservoir pressure transducer short circuit Reservoir pressure transducer open circuit Suspension Pressure Transducer Group SUSP SC SUSP OC SUSP OUT OF RANGE Pressure Switch Group REV SWITCH SC REV SWITCH OC REV SWITCH PNEUMATIC REV SWITCH SIGNAL Suspension pressure transducer short circuit Suspension pressure transducer open circuit Suspension pressure values outside operating range Relay emergency valve pressure switch short circuit Relay emergency valve pressure switch open circuit Relay emergency valve pressure switch pneumatic fault Relay emergency valve pressure switch failed to activate 15011992 CAN Electrical Signal Group PNEUMATIC DEMAND LOSS TOWED CAN DEMAND LOSS TOWED CAN CONTROL LOSS Supply Voltage Group PWR 1507638 FAIL PWR LO VOLT PWR HI VOLT PWR UNSPEC ECU Group ECU EE ERR ECU PARAM ERR ECU EE UNSPEC 10 No corresponding pneumatic demand pressure CAN line pin 7 on 1507638 fault CAN li
16. he vehicle system via the ECU diagnostics connector For further information on Gen 2 Info Centre see user guide 000 700 270 The Gen 2 Info Centre provides a multi digit display of Information e Read Diagnostic Trouble Code DTC e Clear DTC e Configuration e ECU software version number ECU serial number Vehicle Ident Number VIN e Manufacturer OEM e Info Centre software version number Distance e Odometer Total distance Trip distance 1st and 2nd Service distance Wheel scale factor Clock time and date e Clear Trip 1 and 2 Changes Service distance Service interval Wheel scale factor e Clock time and date Options on off parameter updating backlight e Password PIN number e Unlock Info Centre PIN number unknown Testing Load e Wheels sensor cabling check e Pressure Plate Load plate data e Auxiliaries Brake Test e Lining Wear Indication A Haldex PC based program DIAG may be used for more advanced diagnosis This also allows configuration with system parameters to be entered and an End of Line Test to be carried out Fig 6 Fig 7 Fig 8 Alternative positions PC Interface ISO Interface assembly Connect to ECU directly or via side of vehicle connector Diagnostic connection DIAG on ECU Alternative directly connected to ECU or side of vehicle connection Warning Device System Ch
17. ne pin 7 on 1507638 data fault Power loss on pin 1 or 2 ISO7638 Supply voltage at ECU less than 19v when brake apply solenoid energised Supply voltage at the ECU greater than 32v Internal ECU fault Internal ECU fault or ECU not programmed Internal ECU fault or ECU not programmed Internal ECU fault or ECU not programmed DTC Displayed Possible Causes Auxiliary Components Group AUX1 AUX2 AUX3 AUX4 AUX5 Lining Wear Group BRAKE PADS Lateral Accelerometer LAT ACC OC LAT ACC SC LAT ACC SIGNAL Slave Valve Group SLAVE VALVE SENSOR SLAVE VALVE MODULATOR SLAVE VALVE CABLE SLAVE VALVE SLOW REC SLAVE SUSP LOW Auxiliary 1 system wiring open or short circuit Auxiliary 2 system wiring open or short circuit Auxiliary 3 system wiring open or short circuit Auxiliary 4 system wiring open or short circuit Auxiliary 5 system wiring open or short circuit Lining wear wiring open circuit Lateral accelerometer wiring open circuit Lateral accelerometer wiring short circuit Lateral accelerometer signal fault Pressure transducers open or short circuit Hold Dump or Brake Apply solenoid open or short circuit Link cable open or short circuit Slow recovery of one wheel slave valve Suspension pressure values outside operating range Note If a DTC is displayed and after following recommended procedure as detailed in the Service Manual no fault is found the ECU should be re
18. nostic Trouble Codes If a Diagnostic Trouble Code displayed is not listed here check for intermittent sensor and wiring faults DTC Displayed Possible Causes DTC Displayed Possible Causes ECU TIME OUT No supply on ignition switched line EPRV 21 DUMP SC Modulator 21 dump solenoid short circuit or DRIVE permanently energised NO LINK EPRV 21 HOLD Modulator 21 hold solenoid control Possible causes UNSPEC circuit fault Truck fuse blown GEN2 INEO CENTRE or cable fault EPRV 21 DUMP Modulator 21 dump solenoid control UNSPEC circuit fault Open circuit 1507638 not connected EPRV 22 Hold and Dump Solenoid Group Sensor Group S1A CONT 2111 00001 EPRV 22 HOLD SC Modulator 22 hold solenoid short circuit S1B CONT 122 11 22 DUMP SC Modulator 22 dump solenoid short circuit S2A CONT 21102172 EPRV 22 HOLD OC Modulator 22 hold solenoid open circuit S2B CONT 22112072 201 EPRV 22 DUMP OC Modulator 22 dump solenoid open circuit EPRV 22 HOLD SC Modulator 22 hold solenoid short circuit DRIVE permanently energised Intermittent Low Sensor Output Group EPRV 22 DUMP SC Modulator 22 dump solenoid short S1A SIGNAL 1A Sensor signal fault DRIVE circuit permanently energised S1B SIGNAL 1B Sensor signal fault EPRV 22 HOLD Modulator 22 hold solenoid control UNSPEC circuit fault S2A SIGNAL 2A Sensor signal fault S2B SIGNAL 28 5 EPRV 22 DUMP Modulator 22 dump solenoid control epa aa UNSPEC circuit fault Possible causes Loose sens
19. of line Testing EOLT to confirm correct performance of the EB Gen 2 system General Components Guide Haldex EB Gen 2 Assembly Sensor and Exciter 1507638 7 Pin Socket assembly Driver s information plate EB Info Centre Park Shunt and REV Options Option 1 Option 3 Relay Emergency Valve REV Optional position and Park amp Shunt valve Park amp Shunt valve Fig 1 System Layout The system fitted to your trailer may have 2 or 4 Sensors and 2 As a safety back up 1501185 24N Stop Light powering provides ABS Modulators EPRV s The variants available being 2S 2M and 4S 2M function Fig 4 The powering of the system is via The 1507638 controls a Trailer warning device in the driver s console 1507638 7 Pin Full EBS function Fig 2 The warning device has two functions The EB Gen 2 system can also be powered via ISO7638 5 Pin No CAN data bus ABS ELS function only Fig 3 indicate system integrity via the correct sequence see Figs 10 and 11 on page 10 every time the Gen 2 ECU is electrically powered up indicate by a permanent display when the vehicle is moving if a fault has been detected The layout of the chassis components are shown in Fig 5 1507638 7 Pin Full EBS function 1507638 5 Pin A Fig 3 ABS ELS function only No CAN data bus 1501185 24N a a EB ABS EB
20. or connection bracket or exciter Damaged exciter Demand Pressure Transducer Group Malacj sieo SENSOr OTWOL SANSON Na NE DEMAND SC Service line pressure transducer insulation ae short circuit DEMAND OC Service line pressure transducer Low Sensor Output Group open circuit S1A OUTPUT 1A Sensor system fault S1B OUTPUT 1B Sensor system fault Delivery Pressure Transducer Group S2A OUTPUT 2A Sensor system fault EPRV 21 DEL SC Modulator 21 delivery pressure transducer S2B OUTPUT 2B Sensor system fault EPRV 21 DEL OC Modulator 21 delivery pressure transducer Possible causes a 23 Sensor worn maladjusted sensor wiring open or short circuit EPRV 22 DEL SC Modulator 22 delivery pressure transducer short circuit EPRV 22 DEL OC Modulator 22 delivery pressure transducer rake Apply Solenoid Group BRK APPLY SC Brake apply solenoid short circuit BRK APPLY OC Brake apply solenoid short circuit One Wheel with Slow Recovery Group BRK APPLY SC DRIVE Brake apply solenoid short circuit EPRV 21 SLOW REC Slevn recovery permanently energised modulator 21 BRK APPLY UNSPEC Brake apply solenoid short circuit EPRV 22 SLOW REC Slow recovery of one wheel of modulator 22 EPRV 21 Hold and Dump Solenoid Group Possible causes Slow brake release foundation brake EPRV 21 HOLD SC Modulator 21 hold solenoid short circuit mechanical faults dry bearings broken EPRV 21 DUMP SC Modulator 21 dump solenoid short circuit sprin
21. placed ECU Connector Identification iu AUX 2 AUX 3 ae Colas Reset to Ride Height Colas Reset to Ride Height AUX 4 oi AUX 5 Retarder Control BetarderCortrol Lining Wear sensor LateralAccelerometer 24V Power Output 24 V Power Output General Prupose Input GeneralPurposelnput Trailer Lamp Trailer Lamp Control Line Sensor Control Line sensor l ILAS F Eroni ILAS E Front i Soft Docking m Soft Docking LASE reaf ILAS E rear Electronic Height Sensor Electronic Height Sensor ous Aux Power M MEME 1 Steer Axle Lock Service Lamp Overload Lamp Remote Overload Lamp Stability Lamp Lining Wear Lamp General Purpose Output Steer Axle Lock Service Lamp Overload Lamp Remote Overload Lamp Stability Lamp ILAS E Front manual ILAS E Rear Manual Info Point General Purpose Output Tachometer m nin nini ISO Interface assembly ISO1185 ISO 7638 E 111 p Pin4 Pin1 D EE Sensor S1B Sensor S1A PC Interface Sensor S2A Sensor S2B Info Centre lt n 5 J B M M oL ae MN A AA Fig 15 11 p UGE O X Cx 08 31899 31810 wef YOLOINNOD JOVIMIINI Od 11 4005 H Em Hz FE IJ
22. r Up Modes The Gen 2 system has two power up modes With switching the Ignition on applied the following occurs With no yellow line pneumatic pressure i e Brakes OFF The system adopts load sensing mode when the brakes are applied This load sensing mode is limited to 2 minutes for any single brake application after which it returns to a push through condition approx 1 1 The push through condition is cancelled on vehicle movement above 10 km h returning the system to load sensing operation With yellow line pneumatic pressure i e Brakes ON Park on air Apply foot brake switch Ignition On The system adopts a push through approx 1 1 condition When the brakes are released and re applied the system remains in push through unless the brakes are released for longer than 2 minutes after which it returns to load sensing operation This condition is cancelled on vehicle movement above 10 km h returning the system to load sensing operation Fig 9 2 sec Sa OFF Fig 10 ON for 2 seconds Warning device OK and system self checking OFF System self checked not sensors 2 sec 2 sec 10 km h b a d pues OFF Fig 11 Option B ON for 2 seconds OFF for 2 seconds Warning device OK and system self checking System self checked and preparing to check sensors System waiting for vehicle to move above 10 km h in order to check that the sensors are working ON until mo
23. t ECU Electro pneumatic relay valves EPRV s over moulded connectors integrated pressure transducers and a flash upgradable program memory Onset of braking is denoted by presence of a demand on the ISO11992 data link CAN via the 1507638 connector Driver demand pressure is then determined electronically either by the data link or control line pressure transducer within the EPRV s assembly The demand pressure is then modified using data from the air suspension Electronic Load Sensing and may be further modified when a wheel speed sensor detects imminent locking of the sensed wheels ABS The output to the brakes is exercised by the ECU control of the EPRV s see Fig 2 The EB Gen2 ECU also provides up to 5 auxilliary functions such as automatic reset to ride height COLAS lift axle control ILAS E retarder and Stability control EB Gen 2 incorporates an odometer facility which measures total distance of the trailer and its read out is Shown on an optional EB Info Centre unit Only when powered by the 1507638 cable The EB Info Centre is a side of trailer mounted unit used also for read out of diagnostic codes and other information available from the EB Gen 2 ECU The EB Gen 2 also incorporates an enhanced information storage and retrieval facility For the fleet operator a Fleet Log Reader allows the compilation of a full history of each trailer or long term monitoring For the trailer manufacturer an End
24. ving OFF Once the vehicle is moving above 10 km h and the warning device clears the electronic system is fully checked Test Procedure Summary Example sequence STEP 1 Power up WATCH WARNING DEVICE IN TOWING VEHICLE STEP 2 Apply foot brake Power up Listen for EPRV CYCLE STEP 3 Reading Diagnostic Codes using EB Info Centre Remove foot brake SPIN EACH SENSED WHEEL IN TURN Refer to diagnostic code listing STEP 4 MULTIPLE LAMP SEQUENCE The Haldex EB incorporates a modified lamp flash of three flashes The red lamp will flash when the system is powered up when at rest This lamp sequence relates to 1 Service due indicates that trailer or system service distance is due After servicing the trailer or system the next service distance must be reset by using the Info Centre or EOLT program 2 NON EB fault A fault with a device connected to the but not directly effecting the EB for example Reset to Ride valve COLAS Option A OFF 4 5 OFF 2 sec Option B a paasa 2 BENE EBS OFF 2 sec id 5 OFF Fig 12 gt lt i N gt lt uA e gt lt 13 All segment Odometer amp Info Display display test load display Information Diagnostic menu menu Diagnostic display display code Diagnostic Trouble Code listing on pages 12 13 Fig 14 Diag
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