TP-20214 - Meritor WABCO
Contents
1. Meritor WABCO recommends placing sensors the axle that will provide the most braking performance The suspension manufacturer can provide this information TP 20214 16579 Revised 11 15 Printed in USA Copyright Meritor Inc 2015 Page 9 4S 2M VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER SIDE TO SIDE CONTROL FRONT OF TRAILER n Typical Tandem Axle Trailer AT 1 p d Y 1 2 D BU1 Bua NOTE Spring brake BUT BU2 po lines not shown CL 4S 2M VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER SIDE TO SIDE CONTROL Typical Tandem Axle Trailer LN _ TRAILER e NOTE Spring brake lines not shown LE BU1 YE2 SERVICE CONTROL LINES SENSOR CABLES YE1 unn YE2 SERVICE BRAKE SUPPLY AIR 4003555 Figure 14 20214 Revised 11 15 16579 Page 10 Copyright Meritor Inc 2015 Printed in USA Meritor WABCO recommends placing sensors on the axle that will provide the most braking performance The suspension manufacturer can provide this information 4S 2M TYPICAL TRI AXLE VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER SIDE TO SIDE CONTROL p RENE ae ae eee E o PERO FRONT OF TRAILER2. Es 40035618 Figure 21 End of Line Test with TOOLBOX M Software Verify Correct Valve and Lamp Installation To verify valve and lamp installations with TOOLBOX M Software 1 Apply 12 volts DC to the ABS 16579 Printed in USA 2 Apply air to the emergency line to fill the air tanks and release the spring brakes 3 Apply air to the control line 4 MAtthe Trailer Main Screen click on Component Test then select Valves Lamp to display the Valve Activation Screen The Yellow valve indicator will be highlighted Figure 22 Valve Activation Select Valve to Activate 6 elow Blue Red AlValves Test Warning Lamp Warning Lamp Test Test Status Close 4003562b Figure 22 5 Click on the Activate button 6 Check for correct air line installation To accomplish this observe the slack adjusters e f the ECU faces the FRONT of the trailer the slack adjusters will move in and out as the CURBSIDE portion of the dual modulator valve cycles If this does not happen the air lines are not correctly connected Perform the necessary repairs e f the ECU faces the REAR of the trailer the slack adjusters will move in and out as the ROADSIDE portion of the dual modulator valve cycles If this does not happen the air lines are not correctly connected Perform the necessary repairs The Test Status box at the bottom of the
3. BU2 ECU DUAL MODULATOR VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER ADSIDE YE1 ROADSIDE YE2 PLUG UNUSED Exhaust port PORT must face DOWN 4003548a Figure 2 WARNING You must use a Schedule 80 hex nipple 3 4 inch NPTF to mount the ECU dual modulator valve assembly securely to the air tank to avoid possible serious personal injury and damage to the component 16579 1 Use a 3 4 inch NPTF Schedule 80 hex nipple to attach the ECU dual modulator valve assembly to a reinforced air tank Do not overtighten Meritor WABCO does not recommend the use of a vise when installing the hex nipple Use of a vise may cause overclamping Overclamping may damage the internal components of the ECU dual modulator valve assembly 2 Usea3 4 inch NPTF pipe plug to plug the unused supply port Apply SAE standard DOT approved Teflon tape or paste type thread sealant to all pipe threads beyond the first two threads Pipes with pre applied thread sealant may also be used 3 Rotate and tighten the ECU dual modulator valve assembly until the exhaust port faces DOWN and the connection is secure Use a torque wrench or ratchet with an extension at the 3 4 inch pipe plug installed on the front supply port Mounted to Cross Member of Vehicle Mounting Bracket Not Supplied Refer to Figure 3 ECU DUAL MODULATOR VALVE MOUNTED TO A CROSS MEMBER OF THE VEHICLE WITH SENSORS FACING FRONT OF TRAILER Exhaust po
4. 4 NOTE Spring brake BI e lines not shown a z Ing lt E Z 4S 2M TYPICAL TRI AXLE VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER SIDE TO SIDE CONTROL 220 inim E 80 Poe FRONTOF innnan a eee TRAILER e NOTE Spring brake lines not shown o WEWLD SERVICE CONTROL LINES SENSOR CABLES SERVICE BRAKE SUPPLY AIR Ka lt E YET za YE2 D 4003556a Figure 15 TP 20214 16579 Revised 11 15 Printed in USA Copyright Meritor Inc 2015 Page 11 Meritor WABCO recommends placing sensors on the axle that will provide the most braking performance The suspension manufacturer can provide this information 4S 2M TYPICAL AXLE CONTROL INSTALLATION VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER iex e e e e FRONT TRAILER PEN ME le 2 E 7 AR BU2 p YE2 EO 4S 2M TYPICAL AXLE CONTROL INSTALLATION VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER NOTE Spring brake lines not shown CL e E C N BI E a C 4 TRAILER NOTE Spring brake lines not shown SERVICE CONTROL LINES LIE LIF SENSOR CABLES BU2 YE2 SERVICE BRAKE SUPPLY AIR mn
5. 19 SENSOR CABLES e mef SERVICE BRAKE E SUPPLY AIR d eni i UR M BU2 p BU1 pe TID m mE 4S 3M TYPICAL FOUR AXLE PULL TRAILER VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER a NUMEN URN Ce nr FRONT OF 1 NOTE Spring brake lines not shown 55 vail je 40035594 Figure 19 TP 20214 16579 Revised 11 15 Printed in USA Copyright Meritor Inc 2015 Page 15 End of Line Testing End of line testing is required on all Enhanced Easy Stop installations To run these tests Meritor WABCO recommends you use TOOLBOX Software TOOLBOX Software and general test procedures are included in this bulletin If you are using a Pro Link refer to the operating manual for test instructions Enhanced Easy Stop 25 2 45 2 and 4S 3M Premium Installation End of Line Testing Procedure with TOOLBOX Software If you are testing an installation that has a power only cable temporarily install a Meritor WABCO combination power diagnostics Y style cable 1 Connect the diagnostic connector on the cable to the PC serial port SAE diagnostic interface J1587 J1708 to RS232 interface Refer to the Software Owner s Manual 99102 for instructions for running TOOLBOX Software 2 Display the Trailer ABS Main Screen 3 Verify the power supply e Appl
6. m 4007738 Figure 16 TP 20214 Revised 11 15 16579 Page 12 Copyright Meritor Inc 2015 Printed in USA NOTE For Enhanced Easy Stop 4S 3M lift axle installations Meritor WABCO recommends placing sensors on the axle that will you must use TOOLBOX Software version 4 6 or higher to provide the most braking performance The suspension enable the lift axle function It is not automatically enabled Refer to manufacturer can provide this information Enabling the Lift Axle Function 45 3 Installations in the Appendix for instructions 4S 3M TYPICAL TRI AXLE WITH FRONT LIFT VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER 222 Z m FRONT OF SIT y a OAS 9 L 6 e BU2 NOTE Spring brake LLALL AHL lines not shown _ L L 4S 3M TYPICALTRI AXLE WITH FRONT LIFT VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER NOTE Spring brake lines not shown i o o o eee eC p 9 FRONTOF TRAILER i i L SERVICE CONTROL LINES SENSOR CABLES GE SERVICEBRAKE am o VN d SUPPLY AIR E a YET ge MEME 4057 TP 20214 16579 Revised 11 15 Printed in USA Copyright Meritor Inc 2015 Page 13 lt m N TERR Meritor WABCO recommends placing sensors on the axle that will provide the
7. Blink Code Problem Area sensor BUT Determine sensor location Check sensor installation Perform necessary repairs sensor YE1 Determine sensor location Check sensor installation Perform necessary repairs sensor BU2 Determine sensor location Check sensor installation Perform necessary repairs sensor YE2 Determine sensor location Check sensor installation Perform necessary repairs External ABS Verify correct electrical modulator valve installation Check power supply Perform necessary repairs Internal modulator Verify correct installation If failure inlet valve code continues contact Meritor 2 WABCO for assistance Internal modulator Verify correct installation If failure inlet valve code continues contact Meritor 1 WABCO for assistance Internal modulator Verify correct installation If failure outlet valve code continues contact Meritor WABCO for assistance Power Supply Verify correct electrical installation Check power supply Perform necessary repairs ECU Failure Verify correct installation If code continues contact Meritor WABCO for assistance SAE J1708 Failure Internal failure contact Meritor WABCO SAE J2497 Failure Internal failure contact Meritor WABCO Generic 1 0 Failure Verify correct electrical installation Check power supply Co Perform necessary repairs 16579 Printed in USA Trailer Identification After ensuring the Enhanced Easy
8. necessary to inhibit corrosion which can occur from contact between dissimilar metals Galvanic corrosion can result in damage to the ECU modulator assembly 3 Place a thin barrier made of plastic mylar or similar material between the bracket and mounting surface to inhibit corrosion 4 Use two 3 8 inch Grade 8 bolts with prevailing torque nuts to attach the assembly Tighten the bolts to 18 Ib ft 24 Nem P ll Attach the ABS external relay valve 45 3 systems only Tank Mounted WARNING You must use a Schedule 80 hex nipple 3 4 inch NPTF to mount the ECU dual modulator valve assembly securely to the air tank to avoid possible serious personal injury and damage to the component 1 Use a 3 4 inch NPTF Schedule 80 hex nipple to attach the relay valve assembly to a reinforced air tank Do not overtighten Meritor WABCO does not recommend the use of a vise when installing the hex nipple Use of a vise may cause overclamping Overclamping may damage the internal components of the ECU dual modulator valve assembly TP 20214 Revised 11 15 Page 4 Copyright Meritor Inc 2015 2 Usea3 4 inch NPTF pipe plug to plug the unused supply port Apply SAE standard DOT approved Teflon tape or paste type thread sealant to all pipe threads beyond the first two threads Pipes with pre applied thread sealant may also be used 3 Rotate and tighten the relay valve assembly until the exhaust port faces down and the conne
9. 2 D Rotate each sensed wheel one at a time at a rate of 1 2 revolution per second This rate equals a wheel speed of approximately 4 mph 7 kph The ABS indicator lamp should now go out and stay out indicating a correct installation The end of line test is complete 4 f the ABS lamp does not go out there is a sensor gap problem or hardware fault Adjust the sensor and if necessary perform a fault code check Sensor Gap Adjustment Push the sensor into its holder until it contacts the tooth wheel At installation there must be no gap between the sensor and the tooth wheel Measure the AC voltage output The value should be 0 2 volt AC when the wheel is rotated at a rate of 1 2 revolution per second Perform any necessary repairs Repeat the end of line test If the trailer lamp still does not go out a system fault exists Perform a fault code check Fault Code Check Use constant power activation to perform the following fault code check 1 Apply constant power to the ECU dual modulator valve assembly for more than one but less than five seconds 2 Remove the power 3 Reapply the power 4 Check the trailer ABS indicator lamp on the side of the trailer The fault code will be displayed three times 5 Find the fault on the chart and perform the necessary repairs 6 After performing the necessary repairs repeat the end of line test 16579 Printed in USA Blink Code Chart
10. Stoo trailer ABS has been correctly installed attach the ABS indicator label included with the ECU single modulator valve assembly to the trailer Generally this will be applied near the ABS trailer indicator lamp Figure 28 Refer to the vehicle specification sheet for the correct location NOTICE If the ABS indicator lamp comes on stays on when you apply the brakes to a moving vehicle the trailer ABS is not working properly The ABS must be serviced as soon as possible upon completion of your trip to ensure full anti lock braking capability TP 95172 Rev 4 98 40055018 Figure 28 NOTE If this label is not included with the assembly let your supervisor know Labels are available from Meritor WABCO Ask for part number TP 951 72 For additional assistance contact the Meritor OnIrac M Customer Call Center at 866 668 7221 Parts List 400 5001020 25 2 ECU Assembly Valve Assembly 400 500 1030 25 2 45 3 ECU ECU Valve Assembly Assembly 400 5001050 25 2 45 3 ECU ECU Valve Assembly Assembly with InfoLink 899 759 8154 449 326 005 0 0 5 meter 449 326 047 0 4 7 meter 449 713 018 0 1 8 meter 449 713 030 0 3 0 meter 449 713 0500 5 0 meter 441 032 808 0 0 4 meter 441 032 809 0 1 0 meter 432 500 005 0 899 201 842 4 A complete part listing can be found in Meritor WABCO Parts Book PB 96133 available at meritorwabco com TP 20214 Revised 11 15 Copyright Meritor Inc 2015 Page 21 A
11. menu will display the Status of this test 7 Repeat this test for the Blue valve A Repeat Steps 1 3 B Select the Blue valve from the valve activation screen C Click on the Activate button to verify correct valve installation Blue D Check for correct air line installation To accomplish this observe the slack adjusters 16579 Printed in USA e f the ECU faces the FRONT of the trailer the slack adjusters will move in and out as the ROADSIDE portion of the dual modulator valve cycles If this does not happen the air lines are not correctly connected Perform the necessary repairs e f the ECU faces the REAR of the trailer the slack adjusters will move in and out as the CURBSIDE portion of the dual modulator valve cycles If this does not happen the air lines are not correctly connected Perform the necessary repairs 8 For 4S 3M installations Repeat this test for the red valve Red The external relay valve designated RED RD is an axle control valve It controls brake chambers on one or two axles It is important that delivery lines from Port 2 are plumbed as shown on the installation drawings The 4S 3M system is designed to be used with a variety of trailer configurations 9 Click on the Test button to activate the ABS indicator lamp this is the lamp that is mounted on the side of the trailer The lamp will flash eight times indicating lamp installation is OK The Test Status box at the bottom of the
12. menu will display the status of this test Figure 22 10 Click on Close to exit Sensor Orientation Test This test is not for use on 4S 3M installations For 4S 3M installations use the standard Sensor Test To run the standard test select Sensor Test from the Components Test Menu The sensor orientation test must be performed as part of the end of line testing procedure Sensor Orientation Test Screen Before beginning this test look at the ECU to see if the sensors face the front or rear of the trailer TOOLBOX M will ask for this information to start the test Step 5 To perform the sensor orientation test 1 Raise the sensed wheel ends off the ground Apply air to the emergency line to fill the air tanks and release the spring brakes so that the wheels can be rotated 3 Apply 12 volts DC to the ABS 4 Atthe Trailer Main Menu click on Component Test then select Sensor Orientation Testto display the Sensor Orientation Test screen Figure 23 When the Sensor Orientation Test screen first appears the Sensors Facing field will display the default Front This will occur regardless of the actual sensor orientation of the installation being tested TP 20214 Revised 11 15 Copyright Meritor Inc 2015 Page 17 NOTE 25 2 installations use BU1 locations TCS II Sensor Orientation Test 4 Warning Message This test demands that the wheels be spun 6 Click on Start to begin
13. most braking performance The suspension manufacturer can provide this information 4S 3M TYPICAL TRI AXLE VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER FRONT i an TRAILER o o NOTE Spring brake ES YE2 1 E lines not shown War SERVICE CONTROL LINES iMai 0 SENSOR CABLES Typical Tandem pi Fe SERVICE BRAKE a T Axle Trailer BU2 SUPPLY AIR e 6 6 6 C m BE w CENA I J IHI BU2 i BU1 5 C 0 4 3 5 l fex m i Axle Trailer NOTE Spring brake lines not shown YE1 T nee Ea __ 4003558 Figure 18 18 TP 20214 Revised 11 15 16579 Page 14 Copyright Meritor Inc 2015 Printed in USA Meritor WABCO recommends placing sensors on the axle that will provide the most braking performance The suspension manufacturer can provide this information 4S 3M TYPICAL FOUR AXLE PULLTRAILER VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER 4 l e L L FRONTOF TRAILER NOTE Spring brake E lines not shown L ES 0 b ell SERVICE CONTROL LINES
14. valve control Port 4 3 8 inch NPTF B Usean ABS relay valve connection cable to connect the ECU dual modulator valve assembly with the ABS external relay valve Plug any unused delivery ports IV Install the sensor extension cables ABS prepped axles Instructions for installing sensors on non ABS prepped axles are included in the Appendix Meritor WABCO recommends placing sensors on the axle that will provide the most braking performance The suspension manufacturer can provide this information Visually inspect the tooth wheel and sensor to ensure no damage occurred during shipping Perform any necessary repairs Connect the sensors and cables on the prepped axles to the sensor extension cables Figure 7 Ensure that each connection is secure EXTENSION CABLE SENSOR AND CABLE 40035670 Figure 7 Route the sensor cable along the back side of the trailer axle to the ECU dual modulator valve assembly Route the cable with the brake hose TP 20214 Revised 11 15 Page 5 Do not overtighten the tie wraps cable Overtightening can damage the cable Do not tie wrap the molded sensor plug The sensor extension cable must follow the brake hose to the ECU dual modulator valve assembly to allow for axle jounce and rebound secure the cables every eight inches 203 mm with tie wraps or cable clips Push the sensor retainer clip on the ECU dual modulator valve assembly UP Remove the protective caps fro
15. 0 0 Service Miles 0 Internal 1 35 Revs Mile 502 0 Message Center 40054278 H Meritor WABCO Trailer A Trailer Display componen loj xi Tests Modify Help ECU Information ECU Type Trailer TCS Il Manufacture Date 23 2001 aces ais r Fe _ Configu I Saris Figure 29 ED Lift Axle A 2 Click on Lift Axle The default lift axle screen will appear and display the default lift axle status Not Active Figure 30 Fauls Lift Axle Status cive 000 Existing Stored Service Miles Secondary 0 Hevs Mile 502 0 Internal Message Center po 4005429a 4 Click on Close to close the screen Exit TOOLBOX 5 Remove power from the vehicle then reapply power TP 20214 Revised 11 15 16579 Page 22 Copyright Meritor Inc 2015 Printed in USA 6 Follow Steps 2 and 3 to display the Lift Axle Status screen Verify the lift axle status display indicates the lift axle function is active as illustrated in Figure 31 If the lift axle function does not indicate active status verify TOOLBOX version 4 6 or higher is installed If you continue to receive a not active status message contact the Meritor OnTrac M Customer Call Center at 866 OnTrac1 668 7221 for assistance 7 Disconnect TOOLBOX from the vehicle and proceed with end of line testing as described in this bulletin Appendix
16. DE CURBSIDE BUT ROADSIDE PLUG ALL UNUSED DELIVERY CURBSIDE ROADSIDE 4003564a Figure 26 ECU DUAL MODULATOR VALVE MOUTED WITH SENSORS FACING REAR OF TRAILER ROADSIDE CURBSIDE ROADSIDE YE BUT CURBSIDE PLUG ALL UNUSED PORTS YE DELIVERY N Bu ROADSIDE eS 4003565 3 4S 3M installations Repeat this test for the red valve Red The external relay valve designated RED RD is an axle control valve It controls the brake chambers on one or two axles It is important that delivery lines from Port 2 are plumbed as shown in Figure 17 Figure 18 and Figure 19 The 4S 3M system is designed to be used with a variety of trailer configurations 4 f the air lines are not correctly routed perform the necessary repairs Perform End of Line Test 1 Apply 12 volts DC power to the ABS 2 Listen for the ECU dual modulator valve assembly to click four times six times for 45 3 TP 20214 Revised 11 15 Page 20 Copyright Meritor Inc 2015 3 Ifthe indicator lamp comes on for three seconds then goes out this indicates a correct installation The end of line test is complete If the ABS indicator lamp comes on and stays on check the sensor installation A Remove the power from the ABS and raise the sensed wheels so they may be rotated B Apply emergency air to fill the air tanks and release the spring brakes so that the wheels may be rotated C Repeat Steps 1 and
17. Installing Sensors on Non ABS Prepped Axles sensor locations vary due to suspension type Meritor WABCO recommends placing the sensor on the axle that will provide the most braking performance Contact your suspension manufacturer for further information 1 Apply a mineral oil based grease that contains molydisulfide to the sensor spring clip the body of the sensor and the bore of the sensor block The grease must be anti corrosive and contain adhesive properties that will continuously endure temperatures from 40 to 300 F 40 to 150 C 2 Push the spring clip into the sensor holder from the inboard side until the spring clip tabs are against the sensor holder Push the sensor into the spring clip as far as possible Use Meritor WABCO spring clips to ensure a correct fit 3 Push the spring clip into the sensor holder from the inboard side until the spring clip tabs are against the sensor holder Push the sensor into the spring clip as far as possible Figure 32 SPRING CLIP TAB SENSOR HOLDER SENSOR 4003572 Figure 32 16579 Printed in USA 4 Route the sensor cable toward the brake chamber over the brake spider or through the pre stamped hole dedicated for ABS sensors Route to the back side of the axle Secure the cable to the axle between the brake spider and the suspension brackets Continue to route the sensor cable behind the spring seats Secure the cable to the axle one inch from the
18. MERITOR WABCO Installation Guide Hazard Alert Messages Read and observe all Warning and Caution hazard alert messages in this publication They provide information that can help prevent Serious personal injury damage to components or both How to Obtain Additional Maintenance service and Product Information Refer to Maintenance Manual MM 0180 Enhanced Easy Stop M Trailer ABS with PLC Maintenance Manual 33 Easy Stop Trailer ABS and Parts Book PB 96133 Enhanced Easy Stop M with PLC and Easy Stop M Trailer ABS To obtain these publications call the Meritor OnTrac Customer Call Center at 866 OnlTrac1 668 7221 or visit our website at meritorwabco com Important Information Use only genuine Meritor WABCO components Other manufacturers parts are not designed for use with a Meritor WABCO ABS system and may not function correctly Meritor WABCO recommends that a control line filter part number 432 500 005 0 be installed on the air system s control line upstream of the ABS ECU valve assembly Differences Between Easy Stop and Enhanced Easy Stop There are some changes to Enhanced Easy Stop M that you need to be aware of before you begin the installation e Enhanced Easy Stop M includes Power Line Communication PLC function e The ECU dual modulator valve assembly must be mounted as one unit e The LED on top of the ECU has been eliminated e he blink code tool LED does not operate simultaneousl
19. assis ground can be verified by measuring the resistance between the J560 ground pin and the vehicle chassis or frame and confirming that the resistance is less than 10 Ohm lt 10 Q If this is not the case the electrical contact at the common chassis ground point is not sufficient or not present If a common chassis ground point is present but not sufficient ensure that there is no paint or debris inhibiting electrical contact at the ground point If a common chassis ground point is not present Meritor WABCO recommends adding one NOTE Do not add more than one common chassis ground point connecting the J560 ground pin to the chassis to avoid potential ground shifts within the vehicle electrical system Additionally all standard trailer components such as axles should also be electrically connected to the common chassis ground If the axles are not correctly grounded to the chassis a ground strap electrically connecting the axle to the chassis may be added to ensure adequate protection from unwanted electrical noise This can be verified by measuring the resistance between the vehicle chassis frame and the other trailer component then confirming that the resistance is less than 10 Ohm lt 10 Q For more details concerning correct vehicle grounding reference SAE standard J1908 Note during welding work on the trailer e Disconnect power to the trailer e Disconnect all cable connections to devices and components and prot
20. ble lengths are available V Install the power and lamp or power and lamp diagnostic cable 1 Identify the type of cable to be installed Figure 10 ABS trailer industry standard pigtail connector power cable e Blunt cut power cable not shown POWER CABLE i POWER DIAGNOSTIC CABLE 4003568a 2 For industry standard pigtail connector power cables route the cable from the harness connector to the ECU dual modulator valve assembly and secure it to prevent damage For blunt cut power cables route the cable from the ECU dual modulator valve assembly to a junction box which interfaces with the seven way connector at the front of the trailer Leave enough slack in the cable to compensate for flexing of the trailer and sub frame 3 Bundle any excess cable in a loop bow tie and secure it in the sub frame of the trailer body to prevent cable damage 16579 Printed in USA 4 Push the hinged power diagnostic connector retainer clip UP and remove the protective cap from the ECU dual modulator valve assembly Figure 11 KEYED CABLE CONNECTOR MATING TRAILER HARNESS CONNECTOR 4003569a Figure 11 5 Plug the power 8 pin connector on the power or power diagnostic cable into the ECU dual modulator valve assembly 6 Pullthe hinged power diagnostic connector retainer clip on the ECU dual modulator valve assembly DOWN to secure the connection 7 df you are installing the power cable only go to Step 9 8 d
21. cator lamp to the seven way connector on the trailer according to the following diagram Figure 12 GENERIC INPUT OUTPUT EXPANDED CAPABILITY WHITE AND YELLOW WHITE GROUND QO 4 OR 5 WIRE SUE SCHEMATIC STOP LAMP GREEN AND WHITE TRAILER ABS TI INDICATOR LAMP GROUND as ECU POWER CONNECTOR 4003570 Junction box not shown Figure 12 Typical Easy Stop Trailer ABS Installations Refer to Figure 13 through Figure 19 for typical Easy Stop trailer ABS installations Meritor WABCO recommends placing sensors on the axle that will provide the most braking performance The suspension manufacturer can provide this information TP 20214 Revised 11 15 16579 Page 8 Copyright Meritor Inc 2015 Printed in USA 2S 2M VALVE MOUNTED WITH SENSORS uni FACING FRONT OF TRAILER SIDE TO SIDE CONTROL 1 ge e e 4 TRAILER NOTE Spring brake lines not shown BU1 p E EE as C LLL CE 2S 2M VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER SIDE TO SIDE CONTROL FRONT OF TRAILER BU2 BU1 YE1 NOTE Spring brake lines not shown SERVICE CONTROL LINES SENSOR CABLES SERVICE BRAKE SUPPLY AIR 4003554
22. ction is secure Use a torque wrench or ratchet with an extension at the 3 4 inch pipe plug installed on the front supply port Figure 4 PLUG UNUSED PORTS Exhaust port must face DOWN ABS EXTERNAL MODULATOR VALVE 1002073d Figure 4 Mounted to Cross Member of Vehicle Mounting Bracket Not Supplied When mounting the relay valve assembly to the trailer cross member refer to SAE specification J447 Prevention of Corrosion of Motor Vehicle Body and Chassis Components Follow all recommendations and procedures Your supervisor should have a copy of this specification 1 Install a 3 4 inch NPTF fitting in the supply port Use a 3 4 inch NPTF pipe plug to plug the unused supply port Port 1 e Apply SAE standard DOT approved Teflon tape or paste type thread sealant to all pipe plugs beyond the first two threads Pipes with pre applied thread sealant may also be used 2 Install the valve with two locknuts and washers as required Tighten the hex nuts to 18 Ib ft 24 Nem P Ill Connect the air lines Before connecting the air lines plumb the spring brake relay or emergency brake relay into the system as usual e fyouare mounting on a bracket connect the air supply line from the supply tank to the supply Port 1 Plug the unused port e Use 5 8 inch O D min nylon tubing or heavy walled Schedule 80 pipe nipple 3 4 inch NPTF if you are mounting directly to the supply tank 16579 Printed in USA 1 Connect
23. ctor ABS 25 2 45 3 Figure 34 20214 Revised 11 15 Page 24 Copyright Meritor Inc 2015 Strain Relief at the ECU Bracket Mounting Meritor WABCO recommends that cable connections to a component such as an ECU valve assembly display a visible amount of slack in the cable up to the first tie or clip that secures the cable to the trailer structure or air line This first anchor point should be a minimum 6 inches 152 mm of cable length from the cable component connection and maximum of 12 inches 305 mm This applies to all sensor power valve and GIO cables Regardless of whether zip ties or cable clips are used cables should be secured at intervals not greater than 18 inches 457 mm to avoid cable vibration Ideally cables should be affixed to the rigid structure of the trailer A good rule of thumb is to have the bend of the cable also known as bend radius be greater than or equal to ten times the diameter of the cable If the cable is 1 4 inch 6 35 mm in diameter then the bend should be a minimum of 2 1 2 inches 64 mm Refer to Figure 34 for the ECU mounting of 25 2 45 3 ABS N Z 4011414a 16579 Printed in USA Strain Relief at the ECU Tank Mounting It is necessary that cable connections to a component such as an ECU valve assembly display a visible amount of slack in the cable up to the first tie or clip that secures the cable to the trailer structure or air line This first anc
24. de sensor at BUT e 45 2 Connect curbside front sensor at YET Connect curbside rear sensor at YE2 Connect roadside front sensor at BUT Connect roadside rear sensor at BU2 4S 3M Sensor locations vary by type of installation Refer to the diagrams for specific sensor locations For Enhanced Easy Stop 45 3 lift axle installations you must use TOOLBOX Software version 4 6 or higher to enable the lift axle function It is not automatically enabled Refer to Enabling the Lift Axle Function 45 3 Installations in the Appendix for instructions Connect curbside sensor at YE1 Connect curbside sensor at YE2 Connect roadside sensor at BUT Connect roadside sensor at BU2 ECU Dual Modulator Valve Assembly Mounted with Sensors Facing Rear of Trailer e 25 2 Connect curbside sensor at BUT Connect roadside sensor at YE1 e 45 2 Connect curbside front sensor at BUT Connect curbside rear sensor at BU2 Connect roadside front sensor at YET Connect roadside rear sensor at YE2 16579 Printed in USA e 45 3M Sensor locations vary by type of installation Refer to the diagrams for specific sensor locations For Enhanced Easy Stop 45 3 lift axle installations you must use TOOLBOX M Software version 4 6 or higher to enable the lift axle function It is not automatically enabled Refer to Enabling the Lift Axle Function 45 3M Installation
25. ect the plug ins and connections from contamination and humidity e Always connect the grounding electrode directly with the metal next to the welding position when welding to prevent magnetic fields and current flow via the cable or components e Make sure that grounding connections are robust by removing paint or rust at the connection points e Prevent heat influences from the welding activity on devices and cabling when welding Note during electrostatic painting the trailer frame or bogie e Disconnect all cable connections to devices and components and protect the plug ins and connections from contamination and humidity Information contained in this publication was in effect at the time the publication was approved for printing and is subject to change without notice or liability Meritor WABCO reserves the right to revise the information presented or to discontinue the production of parts described at any time TP 20214 Revised 11 15 Printed in USA 16579
26. ehicle with SENSORS FACING FRONT OF TRAILER safety stands Do not work under a vehicle supported only by CURBSIDE ROADSIDE jacks Jacks can slip and fall over Serious personal injury and CURBSIDE YE ROADSIDE damage to components can result 1 Before beginning the installation procedure inspect the ECU SUPPLY s dual modulator valve assembly for damage that may have gt occurred during shipping or storage PLUG ALL e Look for crushed or bent connectors UNUSED e Verify that the retainer clips have not been bent or otherwise damaged OO DF e Do not install a damaged ECU dual modulator valve assembly Notify your supervisor or contact Meritor WABCO if there is any apparent damage ECU DUAL MODULATOR VALVE MOUNTED WITH mE SENSORS FACING REAR OFTRAILER 2 Have the following installation material available ROADSIDE CURBSIDE YE1 ECU dual modulator valve assembly ROADSIDE BUT CunBsIDE ABS relay valve and relay valve extension cable with bayonet connector 3M systems SUPPLY Power cable or power diagnostic cable PORT Sensor extension cables two pieces for 25 systems four pieces for 4S systems UNUSED Sensors two or four for non ABS prepped axles DELIVERY ABS Indicator Label TP 951 72 ROADSIDE DELIVERY CURBSIDE 5 8 inch O D nylon tubing for supply frame mount Pipe plug 3 4 inch NPTF Figure 1 Schedule 80 hex pipe nipple 3 4 inch NPTF for air tank m
27. ensor at YET Connect roadside rear sensor at YE2 e 45 3M Sensor locations vary by type of installation Refer to the diagrams for specific sensor locations For Enhanced Easy Stop 4S 3M lift axle installations you must use TOOLBOX Software version 4 6 or higher to enable the lift axle function It is not automatically enabled Refer to Enabling the Lift Axle Function 45 3M Installations in the Appendix for instructions Connect curbside sensor at BUT Connect curbside sensor at BU2 Connect roadside sensor at YE1 Connect roadside sensor at YE2 If the lift axle is sensed in 45 2 and 4S 3M installations Sensors YE2 and BU2 must always be used on the lift axle to avoid an unwanted ABS indicator lamp illumination 8 Create a strain relief to protect the sensor extension connector terminals Without this strain relief normal trailer jounce and vibration will cause the terminals to spread and loosen Use a tie wrap or clip to secure the cable to the brake air delivery hose as close to the fitting as possible Figure 8 40054570 Figure 8 9 Bundle any excess cable in a Z shaped loop Figure 9 TP 20214 Revised 11 15 16579 Page 6 Copyright Meritor Inc 2015 Printed in USA BUNDLE EXCESS CABLE 4003553 Figure 9 10 Secure excess cable in the sub frame of the vehicle or along the air hoses as appropriate Excess cable should not exceed two feet 0 61 meter Various ca
28. f you are installing the power diagnostic Y cable A Install the diagnostic cable bracket so that the diagnostic plug is accessible The normal location is on the right front corner of the sub frame but will vary depending on the type of trailer B Route the diagnostic cable from the ECU dual modulator valve assembly to the diagnostic cable bracket C Correctly secure the cable in the sub frame to prevent cable damage Leave enough slack in the cable to compensate for flexing of the trailer and sub frame D Bundle excess cable in a loop bow tie and secure the cable in the sub frame Figure 9 9 Install the ABS indicator lamp on the trailer Refer to the vehicle specification sheet for the exact location of the indicator lamp Use a DOT approved lamp with ABS etched on the lens available from major trailer parts suppliers To ensure correct lamp operation use an incandescent type DOT approved lamp or an LED with integral load resistor TP 20214 Revised 11 15 Copyright Meritor Inc 2015 Page 7 If you are using the industry standard connector cable and do not have access to the mating trailer harness mask the open connector to protect it from paint or grease 10 Connect the power Use the industry standard connector cable or a blunt cut power cable For industry standard connector cables Attach the power cable to the harness on the trailer For an optional blunt cut power cable Wire the cable and ABS indi
29. g times when components of the suspension and air system may be in motion A small amount of Slack also eases access to other system components A taut cable can affect the lifespan of the cable Cables without adequate strain relief can potentially stress a cable connection enough that moisture could intrude Unnecessary wear at bend points can be the result of a cable under tension Cable strain relief is a universal practice It applies to all Meritor WABCO product lines from Anti Lock Brake Systems ABS to Roll otability Systems RSS Excess Cable Length In cases where the length of cable exceeds what is required the excess must be bundled in an efficient manner It should not be draped or wrapped around components or left unsecured Any slack remaining in the cable once the connections are made can be gathered up in a Z shaped loop Do not coil the cable and pinch into a bowtie or dog bone shape All cable zip ties should be tightened in a manner only to the extent that the cable is held sufficiently in place Fasten the excess cable to an area that is free of sharp edges and moving components Meritor WABCO has many lengths of cables available so it is a best practice to obtain a length that best suits the requirements of the installation Z ZIP TIE XZ Bend radius R equal to or greater than 10 times cable diameter D First fastener must be a minimum 6 inches 152 mm and a maximum of 12 inches 305 mm from conne
30. hor point should be a minimum 6 inches 152 mm of cable length from the cable component connection and a maximum of 12 inches 305 mm This applies to all sensor power valve and GIO cables Regardless of whether zip ties or cable clips are used cables should be secured at intervals not greater than 18 inches 45 mm to avoid cable vibration Ideally cables should be affixed to the rigid structure of the trailer However structure is not always available on tank mounted installations In these cases securing the cable may be accomplished by fastening the cable to nearby air lines It is important to note that cables should be secured only to the extent that the cable is held sufficiently in place Refer to Figure 35 for 25 2 45 3 ABS 4011414b CORRECT POWER AND GIO MODULATOR CABLE STRAIN RELIEF FOR ABS 25 2 45 3 Sensor Extension Cables at the ECU On valves that are tank mounted with no trailer structure nearby or have remote mounted cables the sensor extension cables are attached to the air lines Cable clips are preferred over zip ties It is important to remember that cables should be fastened in a manner where the cable is secured enough where the cable will not move or chafe against what it is mounted to A small amount of slack should be present to ensure that the cables do not become taut after installation or the servicing of components Figure 36 illustrates the correct amount of slack in the sensor ex
31. le to the following TCS2 Green background Correct sensor location Spin the next sensed wheel as indicated by the screen prompt 25 1 400 500 101 0 25 1 400 500 104 0 Red background Incorrect sensor location If you get a red 25 2 400 500 102 0 i 25 2 400 500 103 0 background you must stop the test click on stop make the 45 2 400 500 103 0 necessary corrections and repeat Steps 3 through 6 Sensors Facing C Front 8 To finish the Sensor Orientation Test click on Stop then on Sensors Close 9 Verify there is sensor output If there is no sensor output verify that a tone ring has been installed and that the sensor is pushed all the way in against the tone ring Perform the necessary repairs and repeat the test If the problem persists contact Meritor WABCO 800 535 5560 Sensor output appears in the Sensors field located in the bottom right portion of the Sensor Orientation Test screen Figure 24 400551 4a Figure 24 TP 20214 Revised 11 15 16579 Page 18 Copyright Meritor Inc 2015 Printed in USA End of Line Testing without TOOLBOX Software Sensor Installation ook at the sensor connectors on the ECU dual modulator valve assembly Ensure that the connectors are routed to the correct wheel end location as follows ECU Dual Modulator Valve Assembly Mounted with Sensors Facing Front of Trailer e 25 2 Connect curbside sensor at YE1 Connect roadsi
32. m YE2 and YE1 sensor connectors Plug the sensor extension cables into the ECU dual modulator valve assembly To secure the connection push the sensor retainer clip DOWN Retainer clips must fit in the groove of the sensor connectors to ensure correct connection ECU Dual Modulator Valve Assembly Mounted with Sensors Facing Front of Trailer e 25 2 Connect curbside sensor at YE1 Connect roadside sensor at BUT e 45 2 Connect curbside front sensor at YET Connect curbside rear sensor at YE2 Connect roadside front sensor at BUT Connect roadside rear sensor at BU2 e 45 3M Sensor locations vary by type of installation Refer to the diagrams on the following pages for specific sensor locations For Enhanced Easy Stop 4S 3M lift axle installations you must use TOOLBOX M Software version 4 6 or higher to enable the lift axle function It is not automatically enabled Refer to Enabling the Lift Axle Function 45 3 Installations in the Appendix for instructions Connect curbside sensor at YE1 Connect curbside sensor at YE2 Connect roadside sensor at BUT Connect roadside sensor at BU2 ECU Dual Modulator Valve Assembly Mounted with Sensors Facing Rear of Trailer e 25 2M Connect curbside sensor at BUT Connect roadside sensor at YE1 e 45 2 Connect curbside front sensor at BUT Connect curbside rear sensor at BU2 Connect roadside front s
33. molded sensor plug Figure 33 Do not overtighten tie wraps on a cable Overtightening can damage the cable Do not tie wrap the molded sensor plug The sensor extension cable must follow the brake hose to the ECU valve assembly to allow for axle jounce and rebound Brake hose clips with a provision for the sensor extension cable are recommended as opposed to tie wraps Meritor WABCO does not supply this part 4003573 Figure 33 5 Install the wheel hub carefully so that the tooth wheel pushes against the sensor as the wheel bearings are adjusted There should be no gap between the sensor and the tooth wheel Test the sensor output voltage Use a volt ohm meter to check the output voltage of the sensors while rotating the wheel at approximately 1 2 revolution per second Minimum output must be 0 2 volt AC If minimum output is less than 0 2 volt AC push the sensor toward the tooth wheel Recheck the sensor output Appendix Ill Cable Strain Relief Guidelines It is important that cabling follow good strain relief practices to ensure maximum performance and durability Failure to provide adequate strain relief on the cables can result in future maintenance that is not covered under warranty TP 20214 Revised 11 15 Copyright Meritor Inc 2015 Page 23 otrain relief is defined as a small amount of slack in the cable at the area of connection This lack of cable tension allows for slight movement of the cable durin
34. ounts or two Grade 8 bolts 3 8 inch and prevailing torque Preparation nuts for frame mounts oAE standard DOT approved thread sealant A WARNING i To prevent serious eye injury always wear safe eye protection To ensure correct lamp Incandescent type when you perform vehicle maintenance or service DOT approved lamp or an LED with integral load resistor Meritor WABCO components The Anti lock Braking System ABS is an electrical system When you work on the ABS take the same precautions that End of line testing must be done after all installations Meritor you must take with any electrical system to avoid serious WABCO recommends using TOOLBOX Software to perform personal injury As with any electrical system the danger of this testing If you do not have TOOLBOX Software this electrical shock or sparks exists that can ignite flammable bulletin also includes instructions for testing without the substances You must always disconnect the battery ground software cable before working on the electrical system TP 20214 Revised 11 15 16579 Page 2 Copyright Meritor Inc 2015 Printed in USA Installation Install the ECU dual modulator valve assembly The assembly may be mounted on the air tank or on the cross member of the vehicle Tank Mounted Refer to Figure 2 ECU DUAL MODULATOR VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER TANK MOUNTED CURBSIDE YE2 CURBSIDE ROADSIDE
35. ppendix Enabling the Lift Axle Function 4S 3M eie Comore Tesis Installations ALS 4 ECU Information To enable the axle function you will need a PC with TOOLBOX software version 4 6 or higher installed Refer to the TOOLBOX M Configuration asym Serial Number 10027455 User s manual for complete operating instructions This manual is Part Number 4465001030 Software Revision sdb posted on our website at meritorwabco com FI Fouts CUT 1 Display the Trailer ABS Main Screen Click on Modify to Existing display the pull down menu Figure 29 Stored Lift Axle Status Not Active Voltage Primary Change TI Meritor WABCO Trailer ABS Diagnostics Secon Trailer ECU Display Component Tests Modify Help T s Service Information n 2 ne Calibration Reconfigure Interna Message Center 4005428a ECU Information Notebook ECU Type Trailer TCS II Plant Location OEM Configuration 45 3M Part Number 4465001030 Software Revision edcb Faults Wheel Sensor Speed RPM Existing Yes YE BUT Stored v2 c 3 change the default status and activate the lift axle function click on Change The Lift Axle Status will change to Active Figure 30 Voltages Service Information Primary 1 3 5 Current Miles 0 0 F IgUre 31 Secondary
36. rt must face DOWN ROADSIDE FRONT OF TRAILER ECU DUAL MODULATOR VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER PLUG ALL N UNUSED PORTS ROADSIDE YE1 is 2 FRONT OF CURBSIDE TRAILER BU1 BU2 40054030 Figure 3 TP 20214 Revised 11 15 Printed in USA Copyright Meritor Inc 2015 Page 3 When mounting the ECU dual modulator valve assembly to the trailer cross member refer to SAE specification J447 Prevention of Corrosion of Motor Vehicle Body and Chassis Components Follow all recommendations and procedures Your supervisor should have a copy of this specification 1 Install a 3 4 inch NPTF fitting in the supply port Use a 3 4 inch NPTF pipe plug to plug the unused supply port Port 1 Apply SAE standard DOT approved Teflon tape or paste type thread sealant to all pipe plugs beyond the first two threads Pipes with pre applied thread sealant may also be used 2 Locate a position for mounting the assembly to the vehicle cross member midway between the side rails close to the brake chambers the valve serves e Drill two 3 8 inch mounting holes The distance between the two holes 0 D must be 6 06 inches 154 mm and mount directly to the cross member OR e Build a mounting bracket with two 3 8 inch mounting holes spaced 6 06 inches 154 mm apart CAUTION Place a thin barrier of plastic mylar or similar material between the bracket and mounting surface The barrier is
37. s in the Appendix for instructions Connect curbside sensor at BUT Connect curbside sensor at BU2 Connect roadside sensor at YE1 Connect roadside sensor at YE2 If the lift axle is sensed in 45 2 and 4S 3M installations Sensors YE2 and BU2 must always be used on the lift axle to avoid an unwanted ABS indicator lamp illumination If sensors are not correctly installed perform the necessary repairs Air Line Installation 2 Copyright Meritor Inc 2015 Ensure that all unused air ports are plugged and that the exhaust port is facing DOWN Look at the air line installation to verify that all air lines are correctly installed e f the ECU dual modulator valve assembly is mounted with the sensors facing the FRONT of the trailer the air lines for the three delivery ports located under the YE sensor connectors must be routed to CURBSIDE the air lines for the three delivery ports on the opposite side of the valve must be routed to roadside Figure 26 e f the ECU dual modulator valve assembly is mounted with the sensors facing the REAR of the trailer the air lines for the three delivery ports located under the YE sensor connectors must be routed to ROADSIDE the air lines for the three delivery ports on the opposite side of the valve must be routed to curbside Figure 27 TP 20214 Revised 11 15 Page 19 ECU DUAL MODULATOR VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER CURBSIDE ROADSI
38. tension cables and correct SENSOR CABLE STRAIN RELIEF FOR attachment to the air delivery lines for ABS ECUs 4012337 w Figure 36 TP 20214 16579 Revised 11 15 Printed in USA Copyright Meritor Inc 2015 Page 25 Cable to Cable Connections It is important to ensure all cable to cable connections maintain good strain relief Cable restraints must be placed between 2 and 4 inches 51 102 mm from the cable connector to ensure correct strain relief Regardless of whether zip ties or cable clips are used cables should be secured at intervals not greater than 18 inches 457 mm to avoid cable vibration Refer to Figure 3 for air line attachment and Figure 38 for axle attachment a 76 MM 76 MM ZIP TIES ON AIR LINES 4012336a Figure 37 SENSOR CABLE Noo 76 MM M A mmm WIDE ENDS V ZIP TIES ON AXLE 40114172 Figure 38 Appendix IV Vehicle Electrical Grounding Guidelines Ensure that the vehicle includes a correct common chassis ground point A common chassis ground point connects the trailer frame chassis to the ground pin of the J560 seven way connector and will protect the vehicle electrical system from unwanted electrical noise MERITOR WABCO Meritor WABCO Vehicle Control Systems 2135 West Maple Road Troy 48084 7121 USA 866 Onlrac1 668 7221 meritorwabco com Copyright 2015 Meritor Inc All Rights Reserved Common ch
39. the air delivery lines to the ECU dual modulator valve oi assembly Port 2 For 4S 3M installations connect the air delivery lines to Port 2 on the external relay valve 3 8 inch NPTF 2 Connect the air delivery lines to the appropriate brake chambers 3 8 inch NPT Figure 5 and Figure 6 e The valve portion of the ECU dual modulator valve assembly contains two separate valves one dedicated to roadside wheel ends the other dedicated to curbside wheel ends Each valve has three delivery ports e The external relay valve designated RED RD is an axle 9i control valve It controls brake chambers on one or two axles It is important that delivery lines from Port 2 are plumbed as shown Refer to Figure 13 through Figure 19 TYPICAL 2M INSTALLATION VALVE MOUNTED WITH SENSORS FACING FRONT OF TRAILER SERVICE CONTROL LINES SERVICE BRAKE SUPPLY AIR SPRING BRAKE AIR 4003550a Figure 5 TYPICAL 2M INSTALLATION VALVE MOUNTED WITH SENSORS FACING REAR OF TRAILER SERVICE CONTROL LINES SERVICE BRAKE SUPPLY AIR SPRING BRAKE AIR 4003551a Figure 6 16579 Printed in USA 3 Copyright Meritor Inc 2015 Connect the brake service control line to the ECU dual modulator valve assembly Port 4 1 4 inch NPTF For 45 3 installations perform the following procedures A Connect the brake service control line to the ECU dual modulator valve assembly Port 4 1 4 inch NPTF and ABS external relay
40. the test Figure 2b predetermined order and that the ECU mounting orientation is entered by the operator It is applicable to the following TCS2 configurations only 25 1M 400 500 101 0 25 1M 400 500 104 0 25 2 400 500 102 0 25 2 400 500 103 0 45 2 400 500 103 0 TY TCS Sensor Orientation Test Sensor Orientation Test Sensors Facing Spin tire number 1 as shown on the diagram Rear Sensors Facing Front Rear Sensors YE1 YE 4005458a PE Figure 23 5 Click on Front or Rear in the Sensors Facing field to select 40054592 the mounting orientation of the ECU dual modulator valve assembly Figure 24 Figure e Refer to Figure 23 and Figure 24 for illustrations of the ECU 7 Follow the screen prompts starting with 1 to rotate each mounted with sensors facing forward and rear The correct sensed wheel end at a rate of 1 2 revolution per second This mounting orientation must be selected prior to starting the test rate equals a wheel speed of approximately 4 mph 7 kph As Step 5 each sensed wheel is rotated check the color of the sensor identification block on the screen for results Sensor identification boxes are located in the bottom left portion of the X Sensor Orientation Test screen Figure 24 Warning Message This test demands that the wheels be spun in a predetermined order and that the ECU mounting orientation is entered by the operator It is applicab
41. y 12 volts DC to the blue wire constant Check the screen for the correct voltage 9 5 to 14 volts Constant power voltage is displayed in the PRIMARY field Figure 20 e Apply 12 volts DC to the red wire stoplight power Check the screen for the correct voltage 9 5 to 14 volts Stoplight power voltage is displayed in the SECONDARY field Figure 20 The internal field is not applicable to this test TP 20214 Revised 11 15 Page 16 Copyright Meritor Inc 2015 EX Mentor WABCO Trader ABS Diagnostics Tre Tcs Manace Date 624 7 Senal Numba SoeweReven 200 Faults Wheel Sensor Speed RPM Enting 7 Stored Hane wee 7 BUR lt 7 Voltages r Service Information Primam fasz Curent Mies D Secondary po Service Miles p Internal haee Message Center 1 4003560a Figure 20 4 Check the Faults field on the Main Screen NONE No faults present proceed with end of line test YES Faults present double click on YES to bring up the fault information screen Use the information in the Repair Instructions field to perform the necessary repairs Figure 21 UT NL Den or heri detected Dreck paren vere connecion Raniance of ranno phobi be chive Replace senior d 2 B
42. y with the ABS lamp on the trailer TP 20214 Revised 11 15 Enhanced Easy Stop Trailer ABS 25 2 45 2 and 45 3 Premium with PLC Installation Instructions e For Enhanced Easy Stop 45 3 lift axle installations you must use TOOLBOX Software version 4 6 or higher to enable the lift axle function It is not automatically enabled Refer to Enabling the Lift Axle Function 4S 3M Installations in the Appendix for instructions For 45 2 lift axle installations the lift axle function is automatically enabled The valve portion of the ECU dual modulator valve assembly contains two separate modulator valves that share common control and exhaust ports Each valve has three delivery ports Therefore the mounting orientation whether the valve is facing the front or the rear of the trailer determines sensor hookup If this assembly is mounted facing forward toward the front of the trailer the YE sensor connections go to the curbside and the BU sensor connections go to the roadside If this assembly is mounted facing the rear the YE sensor connections go to the roadside and the BU sensor connections go to the curbside Figure 1 All premium systems use the same ECU dual modulator valve assembly The ECU dual modulator assembly cannot be used as a 25 1M System Park the vehicle a level surface Block the wheels to ECU DUAL MODULATOR VALVE MOUNTED WITH prevent the vehicle from moving Support the v
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