TP-15143 EBS Repair Guide (1)

TP-15143 Issued 11-15

Meritor WABCO Electronic Brake System EBS 3.1 Repair Guide

Repair Guide Content Issued11-15 TP-15143 1 Technical Bulletin

EBS3 Diagnostic Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Establishing Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Displaying EBS Informati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 EBS3 Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Accessing Diagnostic Trouble Codes (DTCs). . . . . . . . . . . . . . . . . 4 DTC Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Clearing Memor y Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Accessing Other Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Record J1939 Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Diagnostic Trouble Code Table Table . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Wiring Schematics and Component Pin-Outs. . . . . . . . . . . . . . . 36 Pin-Out Central ECU Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 Pin-Out Front Axle Modula tor . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Pin-Out Rear Axle Modula tor. . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Pin-Out Brake Signal Transmitter . . . . . . . . . . . . . . . . . . . . . . . 40 Pin-Out ABS Modulator Valves . . . . . . . . . . . . . . . . . . . . . . . . . 40 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

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.

WARNING To prevent serious eye injury, always wear safe eye protection when you perform vehicle maintenance or service.

Park the vehicle on a level surface. Block the wheels to prevent the vehicle from moving. Support the vehicle with safety stands. Do not work under a vehicle supported only by jacks. Jacks can slip and fall over. over. Serious personal injury and damage to components can result.

WARNING Some brake linings contain asbestos fibers, a cancer and lung disease hazard. Some brake linings contain non-asbestos fibers, whose long-term effects to health are unknown. You must use caution when you handle both asbestos and non-asbestos materials.

How to Obtain Additional Maintenance, Maintenance, Service and Product Information If you have any questions about the material covered in this publication, or for more information about the Meritor WABCO product line, please contact the Meritor OnTrac™ Customer Call Center at 1-866-OnTrac1 (866-668-7221) or visit our website: meritorwabco.com.

Electronic Brake System (EBS) 3.1 Diagnostic and Repair Guide This publication provides instructions for diagnosing and repairing issues with the electronic brake system using TOOLBOX™ Software.

EBS3 Diagnostic Session Diagnostic Software and Equipment Required For diagnostic communications with the EBS3 system, the following items are required: Meritor WABCO TOOLBOX™ Software 12.0 or later NOTE: To NOTE: To download TOOLBOX™ Software, visit meritorwabco.com.

40123 95a

Meritor WABCO Diagnostic Interfaces. 

Noregon



Nexiq



Dearborn Group

40123 96a

Establishing Communication

The following screen screen will appear. appear. Figure 2.

Use the following steps to establish communications betw een EBS 3 and TOOLBOX™ Software. 1.

Figure2 e2

To access access the the Meritor Meritor WABCO WABCO TOOLB TOOLBOX™ OX™ Softw Software are from from the desktop screen, double-click on the Meritor WABCO TOOLBOX™ icon or click “All Programs” and select the program from the the list. Figure Figure 1.

Figure1

4012502 a Figure 2

40123 97a Figure 1

TP-15143 Issued 11-15 Page 2

Copyright Meritor, Inc., 2015

(16579) Printed in USA

2.

The first first time time that that the the Meritor Meritor WABCO WABCO TOOLBO TOOLBOX™ X™ Softwar Softwaree is used, it is necessary to select the correct Meritor WABCO Interface in order to establish communication with the ECU. From the Meritor WABCO TOOLBOX™ main menu, click on “Utilities”. “Utilities”. Figure 3.

Figure5

Figure3

4012401 a

40123 99a Figure 5

Figure 3

3.

5.

Click Click on “Ad “Adap apte terr Selec Selecti tion on”. ”. Fig Figure ure 4.

Under Under "Protoc "Protocol", ol", click click the the down-ar down-arrow row to selec selectt the desir desired ed CAN protocol protocol from the pull-down list. list. Figure 6.

Figure4

Figure6

4012402 a Figure 6

NOTE: Changing NOTE: Changing protocols during the use of TOOLBOX™ Software 11 requires an ignition or power cycle. This is required to reset the hardware and establish communications.

4012400 a Figure 4

6. 4.

The Adapt Adapter er Selectio Selectionn window window will appear appear.. Under Under "Vendor "Vendor", ", click the down-arrow to select from a list of diagnostic adapters previously installed. If your diagnostic adapter is not on the list, download and install the correct drivers and firmware from the diagnostic adapter manufacturer’s website. Figur Figuree 5.


Under Under “Adapt “Adapter er Selecti Selection” on”,, click click the down-a down-arrow rrow to select select from from a list of adapter adapter choices. choices. Figure 7.



Displaying EBS Information

Figure7

To retrieve EBS information, select “Diagnostic Informa tion” from the home screen. The screen will then display the EBS part number and EBS software version as well as other important information. Information regarding the ECU Data and vehicle configuration can also be found in this screen. screen. Figure Figure 9. Figure9 e9

4012403 a Figure 7

NOTE: Some NOTE: Some vendors may have multiple adapter selections. Please refer to your specific hardware manufacturer’s manual to determine specific adapter type and capabilities. 7.

When When all the selectio selections ns are are made, made, click click “OK”. “OK”.

4012404 a

NOTE: EBS NOTE: EBS will only communicate on J1939. Verify that the correct device and protocol are selected under “Adapter Selection” in “Utilities”. If the protocol was changed, you will need to cycle the key. 8.

From the the followin followingg screen, screen, click click on on the EBS EBS (J1939) (J1939) button button.. Figur Figuree 8.

Figure 9

EBS3 Diagnostics Accessing Diagnostic Trouble Trouble Codes (DTCs) Issues in the EBS can be diagnosed viewing active and stored DTCs: 1.

Select Select the the "Disp "Display" lay" opti option on from from the the menu menu bar bar.

2.

From the pull-down pull-down menu, menu, select “Diagnostic “Diagnostic Trouble Codes” to bring up the DTC information information screen. screen. Figure 10.

Figure8

Figure10 e 10

4012405 a

4012502 a Figure 8


Figure 10



A description of the DTC, the number of times the DTC occurred, the suspect parameter number (SPN) and the failure mode identifier (FMI) a re all displayed in the Dia gnostic Trouble Codes window. Basic repair instructions for each DTC are also provided. This will show a list of all the “active” and/or “stored” faults in the ECU memory. After making the necessary repairs, use the “Clear Faults” button to clear the DTCs. Figure 11.

Figure13

Figure11

4012408 a Figure 13

5.

To generate a fault report, select the “Generate Fault Report“ button from the “Diagnostic Trouble Codes” screen. Note: A DTC Report can also be generated by selecting the “Generate DTC Report” button, on the “Diagnostic Trouble Codes” screen. Figure 12. The “Fault Report” screen provides additional information that is not included in the “Diagnostic Trouble Codes” screen. Figure 14.

401240 6a Figure14

Figure 11

3.

Click on the “status” of each fault to get the details on each of the faults. The fault’s SPN and FMI numbers can be found in the DTC tables in this publication. Figure 12.

Figure12

401240 9a Figure 14

6.

When the “Save As” screen opens, provide a name for the file and select the location where it will be saved.

7.

After generating a fault report, DTCs can be cleared by clicking the “Clear DTCs” button. Only stored DTCs will clear. Figure 15. The following message will appear when the DTCs have been cleared. Figure 16.

4012407 a Figure 12

DTC Report 4.

Double click on any fault and the following screen will display. Figure 13.




Figure15

Figure 18

4012496a Figure 15

Figure16

4012412 a Figure 18

3.

When the memory bits are cleared, the following screen will appear. Click “OK” to close the screen. Figure 19.

Figure 19

4012410 a Figure 16

8.

Click “OK”.

Clearing Memory Bits 1.

From the “Display” menu, select “Clear Memory Bits”. Figure 17.

Figure17

4012413 a Figure 19

4012411 a Figure 17

2.

When the following screen appears, click “Yes”. Figure 18.




Accessing Other Functions 1.

Figure22

To display Maintenance Manual, Contact Information and About Information, select the desired option from the pull-down list from the "Help" menu. Figure 20.

Figure20

4012415 a 4012414 a

Figure 22 Figure 20

2.

The following screen will appear. Click the “Close” button to close the screen. Figure 21.

Recording J1939 Data 1.

To record J1939 data, select “J1939 Bus Monitor” from the TOOLBOX™ Software Utilities menu. Figure 23.

Figure21

Figure23

4012415 a Figure 21

3.

To display information about the EBS3 Diagnostic Software, select “About” from the “Help” menu. Figure 20.

4.

The following screen will appear. Click the “Close” button to close the screen. Figure 22.

4012400 a Figure 23

2.


To capture a log file, click on “Start Logging”. A single log file will capture up to five minutes of information. To pause a log file, click on “Pause”; to resume logging, click on “Resume”. Figure 24.



Figure24

Figure 26

401241 9a

4012417 a Figure 26

Figure 24

3.

Once the required data has been captured, click on “Stop Logging”. Figure 25.

5.

Specific messages can also be viewed after saving the file by clicking on “Load Saved Data”, and then highlighting the desired message. Figure 27.

Figure25

Figure 27

4012418 a 4012420 a Figure 25 Figure 27

4.

A “Save As” screen will then come up asking you to name the file and select where it will be saved. Figure 26.

EBS Diagnostic Trouble Code Table The following table provides repair instructions for SPN/FMI DTCs that are readable using TOOLBOX™ Software. If the display shows a code not listed in the table, contact the Meritor OnTrac™ Customer Call Center at 866-OnTrac1 (668-7221) for assistance.




Figure54

s n o i t c u r t s n I r i a p e R

s r e t e m a r a P e l x A / 2 p u o r G ( n o i t c n u f C S E r o f g n i t t ) e s A r ) T , ) e t A A e T A P T , ( , m A t A a : r ) ) ( P e P ) ) s a n 2 ( 1 f 2 A A 2 f ) p i o A A R d O e L t T F R n y p a y , O r o t o o T t u i a l g A E g 1 t t i P t ﬁ 1 1 1 i b n ( c n s 1 A A d s i e A e s e l o F F R r e u r C e x e ( ( ( e a n c r o , p a p e e e p l e o y s s s S P S F c y y n t r a a a g g g e t T i o e b b l b g i h r l l n i n e t i t e l n n i t r r e e e i c p k m i o l k r e e e e e e e c o t x h h h c t e t e e e h i o e t e f h G V L A W L S S S W W C - - - - - - - - - - -

o i t y a t i l i R b g a t n i r S e l l e o t S R / / 3 4 p p u u o o r r G G ( ( n n o o i i t t c c n n u u f f C C S S E E r r o o f f g g n n i t t n i t t o e t t e i n s h t a s o i r i g h n r t g e i e r c t t t / i r n e f / e t m r u f e f m l l e m e t a r a e c r e r e r i s t l a t e D a s u p u t p i r u o o i L L / e p r r o t : t O e / O ) r a e c l r c i i E n e g E s a t a n n n t r t i s r r e a i n c c t r h T r e e i i e : e t l e l c r r o e r : g t i e r m c d a o ) n a t o a a e n c s a r S c r r i o a a e t e r e P e g g f h p p h n i n o h t t t l c S o e i r r e k o k y e e d c t r C C l c m e e a o n S S e t t e n h r a S S M h o R R O C P - - - C C - - -

l a n o i t i d d A / 5 p u o r G ( n o i t c n u f C S E r A o A f g M n i A t / t A e s R e - l r e M x t a e A / e m c A a e F r l - n e a x r p : a M e f A ) L s e e v n i r O e r e r o E t d t e / t e t w e c m n t e o e c r r r f b n r a a o a h e t s c P t s i d e y i a d r b h t w l t e e r o k e s k c m c n h a o e r e h e T S W C G - - -

n o l l i t s e r a s r e t e m a r a p e h T . e l c i h e v t n a v e l e r e h t r o f g n . t e i t l u e d s o r e m t l e a m r t n a r e a c p . g S L i n B O t t E E e s e t e t c l a u u l c a p e f e x e R E d -

c i r t c e l e d e . t s l a e r e r . u l i e U a h f t C l d E l a n r a S i a n B p o E e i t A r e d c h n e t a n n d U o c n C a a e E - t a l u S d d B N o E A m A C l e s a r t h t i n f s s o a e c y h r c S o e B m h E e t f n m o e e e r g w n t u i l r e i i b a f w s e e r o h t h t t k k c c c e e e n h h n C C o c - -

s u o m o . n e o l t u u d a o ( n m o i t l a r c t n n u e f c S S B B E E A r e o c f a g l n p e i t r t , e t s c e r r e r t e o c m e a r ) . r a a p m r s e e L t t O s e E y m t s e a c k r e a r a r r p o b L c y e c O h n E t e e k g c r s e e e t h h m f C e I - -

. e l u d o m l a r t n e c S B E e c a l p e R -

f f O d e h c t i w S e b t o n n a C t i u c r i C y a l e D f f O r e s w t o i s P / x 1 e 3 n - i o 2 t i 8 d 2 n 0 o 2 c 5 -

n o i t i d n o c e n o D t e Y t o N g n i t t e S r e t e m a r a P L O E 1 3 5 8 t 2 s s 0 i 2 x 5 e

) s e g a s s e m S B E A ( k n i l a t a D 9 3 e 9 t 1 a J r e E t a A d S p / u 9 l - a 3 m 9 r 2 o 0 n 2 b 5 a

/ 3 p u o r G n ( o i n t a o r i b t c i l n a u c F - f o C t S u E o r ) e s t e r e t m a r e a m P a r a L P O o E t i / 3 a 1 R - g 2 i 7 n 2 r e 0 t 2 e 5 S

l l o R / 4 p u o r n o G t i ( n a r o b i i l t c a n c u f o F - t C u S o E ) r s e r t e e t m e a r m a a r P a L P l O o r E t / 3 n o 1 C y 3 t l 7 i 2 i b 0 t 2 a 5 S

/ 5 n o p i u t a o r r b G i l ( a n c o f i t o c t n u u o F - C ) s S r e E t r e e m t e a r m a a r P a y r P t L e O m o E / e 3 G 1 l - a 4 n o 7 i i 2 t 0 d 2 d 5 A

f o t u o n o i t c n u f S B E A r e t e m a r a P L O E / 3 1 n - i o 9 t a 7 r 2 b i 0 l 2 a 5 c

n O d e h c t i w S e b t o n n a C t i u c r i C y a l e D f f O r e s w t o i s P / x 1 e 3 n - i o 1 t i 8 d 2 n 0 o 2 c 5 -

C T D

3 1 1 7 2 0 2 5

3 1 2 7 2 0 2 5

3 1 3 7 2 0 2 5

3 1 4 7 2 0 2 5

3 1 9 7 2 0 2 5

1 3 1 8 2 0 2 5

1 3 2 8 2 0 2 5

1 3 5 8 2 0 2 5

9 3 9 2 0 2 5

I M F

3 1

3 1

3 1

3 1

3 1

1 3

1 3

1 3

9

N P S

1 7 2 0 2 5

2 7 2 0 2 5

3 7 2 0 2 5

4 7 2 0 2 5

9 7 2 0 2 5

1 8 2 0 2 5

2 8 2 0 2 5

5 8 2 0 2 5

3 9 2 0 2 5

t x e T C T D

e n l o x i t A / a r 2 b l p i u a c o r f o G ( t n u o o i t c ) n n u i o F - t a C r S u g E ﬁ r n e o t e C , m y r a r t a e P m L o e O G E / 3 s 1 r e - t 1 e 7 m 2 a 0 r 2 a 5 P

4012452 a Figure 54




Wiring Schematics and Component Pin-Outs Refer to Figure 55, Figure 56, Figure 57, Figure 58, Figure 59, Figure 60 and Figure 61. Figure55

CENTRAL ECU MODULE X1 (17 POL.) SAE J1939 VEHICLE DATA BUS

13 1 3

CANL CANH

EB CUT OF F RELAY CONTACT 15 CONTACT 30A CONTACT 30B BRAKE LIGHT RELAY WARNING LAMP HEARTBEAT

ZM +5V +24V

17 7 8 9 2 18 15 14 12 11 4

X6 (7 POL.) L R A E T N T G I I S M E S K N A A R R B T

X3 (9 POL.)

5 6 X5 (6 POL.)

ASC-OFFROAD PUSH BUTTON 5 4

2 3

2 1

1 4

7 6

5 6 X2 (15 POL.)

ABS-VALVE FRONT AXLE LEFT AV EV

10 11 12

ABS-VALVE FRONT AXLE RIGHT

13 14 15

AV EV

7 8 9

TCV_ DSENS _GND

1 2 4 3

6 5

X4 (12 POL.)

9

12 9

6 8

2 5

2 5

3 6

X1 (7 POL.) X2 (4 POL.) 1 2

SPEED SENSOR 4 5 SPEED SENSOR 6 7

E L X A G N I V I R D R M O T 2 A L U D O M E L X A

2 1

X2 (4 POL.)

3 7

7 10

2 1

1

1

CANL

4

4

CANH

3

CANL

4 CANH

3

4

X1 (7 POL.) E L X A T N O R F R O T M 1 A L U D O M E L X A

1 2

SPEED SENSOR 4 5 SPEED SENSOR 6 7

4012421 a

Figure 55




Figure56

1

4

7 10 13 16

1

4

7 10 13

1

4

7

1

4

7 10

1

4

2

5

8 11 14 17

2

5

8 11 14

2

5

8

2

5

8 11

2

5

3

6

9 12 15 18

3

6

9 12 15

3

6

9

3

6

9 12

3

6

X1

X2

Ab br evi ati on

X3

X4

X5

Desc ri pt io n

4012422 a Figure 56




Figure57

4012453 a Figure 57




Figure58

FRONT AXLE MODULATOR

1

2

3

X1 4

5

6

1

7

3

X2 4

2

1

3

X3 4

2

4012423 a Figure 58

Figure59

REAR AXLE MODULATOR

1

2

3

X1 4

5

1

6

7

3

X2 4

2

1

3

X3 4

2

4012454 a Figure 59




TP-15143 EBS Repair Guide (1)

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