ABS M4 Kit
Manual2.1 7/20/2017

Table of Contents

Table of contents
1 System Overview ................................................................................................................................................. 4
2 Before Use ............................................................................................................................................................ 5
2.1 Safety Information .......................................................................................................................................................................... 5
2.2 ABS in Motorsport .......................................................................................................................................................................... 5
2.3 Principle of Operation ................................................................................................................................................................... 6
2.4 Features ............................................................................................................................................................................................... 6
3 Technical Data ...................................................................................................................................................... 94 Adaptations to Your Vehicle ............................................................................................................................ 11
5 Included in the Kit ............................................................................................................................................. 13
5.1 ABS M4 Kit 1 .................................................................................................................................................................................... 13
5.2 ABS M4 Kit 2 .................................................................................................................................................................................... 13
5.3 ABS M4 Kit Clubsport .................................................................................................................................................................. 14
5.4 Connector Overview Kit 1 .......................................................................................................................................................... 14
5.5 Connector Overview Kit 2 .......................................................................................................................................................... 15
5.6 Connector Overview Kit Clubsport ......................................................................................................................................... 15
6 Optional Accessories ......................................................................................................................................... 17
6.1 MSA Box II ........................................................................................................................................................................................ 17
6.2 Wheel Speed Signal Splitter ...................................................................................................................................................... 17
6.3 Data Logger C 70 .......................................................................................................................................................................... 18
6.4 Display DDU 9 ................................................................................................................................................................................ 18
7 Assembling the Parts ........................................................................................................................................ 19
7.1 Hydraulic Power Unit with attached Control Unit ............................................................................................................ 19
7.2 Brake Pressure Sensor ................................................................................................................................................................. 20
7.3 Wheel Speed Sensors .................................................................................................................................................................. 20
7.4 Encoder Wheel ............................................................................................................................................................................... 21
7.5 Distance between the Sensor and the Encoder Wheel .................................................................................................. 21
7.6 Gyro/Acceleration Sensor .......................................................................................................................................................... 22
7.7 ABS Map Switch ............................................................................................................................................................................. 22
7.8 ABS warning light (MIL) .............................................................................................................................................................. 23
7.9 Diagnosis Interface ....................................................................................................................................................................... 23
7.10 Brake Light Switch ......................................................................................................................................................................... 24
7.11 Brake Lines ....................................................................................................................................................................................... 24
7.12 General: Brake Calipers ............................................................................................................................................................... 25
8 ABS M4-Laptop Communication ..................................................................................................................... 26
9 Programming and Diagnosis Software ........................................................................................................... 27
9.1 Installing the Programming and Diagnosis Software ..................................................................................................... 27
9.2 Features of the Programming and Diagnosis Software ................................................................................................. 29
10 Appendix ............................................................................................................................................................ 40
10.1 Startup Checklist ............................................................................................................................................................................ 40
10.2 CAN Protocol .................................................................................................................................................................................. 42
11 Offer Drawing: Hydraulic Power Unit with attached Control Unit .............................................................. 45
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Bosch Motorsport

Table of Contents

12 Offer Drawing: Brake Pressure Sensor ............................................................................................................ 46
13 Mounting Instructions: Brake Pressure Sensor .............................................................................................. 47
14 Offer Drawing: Wheel Speed Sensor ............................................................................................................... 48
15 Offer Drawing: Gyro/Acceleration Sensor ...................................................................................................... 49
16 Wiring Diagram ABS M4 ................................................................................................................................... 50
17 Wiring Diagram ABS M4 Clubsport ................................................................................................................. 51
18 Wiring Harness in general ................................................................................................................................ 52
19 Wiring Harness Clubsport ................................................................................................................................ 53

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4 / 56

ABS M4 Manual
11

7 Wheel speed front right
8 Wheel speed front left
9 Wheel speed rear right
10 Wheel speed rear left
11 Signal brake pressure sensor
12 Signal function switch
13 ABS Warning Lamp (MIL)
14 K-line to diagnostic connector
15 CAN-Link to C Sport memory
16 Signal longitudinal acceleration via CAN
17 Signal lateral acceleration sensor via CAN
18 Yaw signal via CAN

39

5

Measuring channels

2

44

42

6

41

1 Brake pressure front right
2 Brake pressure front left
3 Brake pressure rear right
4 Brake pressure rear left
5 Brake pressure master cylinder front
6 Brake pressure master cylinder rear

8

7

36

43

1

Brake lines

26

25

30

31

12

13

33

34

18

17

16

24

20

19

23

15

19 Signal brake pressure front right
20 Signal brake pressure front left
21 Signal brake pressure rear right
22 Signal brake pressure rear left
23 Brake pressure master cylinder front
24 Brake pressure master cylinder rear

Measuring channels optional

29

38

37

14

9

40

10

4

22

21

47

46

3
45

40 Logging device
41 Pressure sensor master cylinder front
42 Pressure sensor master cylinder rear
43 Pressure sensor front right
44 Pressure sensor front left
45 Pressure sensor rear right46 Pressure sensor rear left
47 Steering angle potentiometer

Optional equipment28

27

to RaceLab Sport analyzing tool
to ABS calibration and diagnostic software RaceABS

25 Wheel speed sensor front right
26 Wheel speed sensor front left
27 Wheel speed sensor rear right
28 Wheel speed sensor rear left
29 ABS ECU & hydraulic modulator
30 Brake master cylinder front
31 Brake master cylinder rear
32 Yaw/ acceleration sensor
33 ABS map switch
34 ABS Warning lamp (MIL)
35 Diagnostic connector and data download via CAN
36 Brake switch
37 Brake pedal
38 Brake balance adjustor
39 Brake pressure sensor

Hardware32

Logging device

35

1 | System Overview

1 System Overview

Bosch MotorsportBefore Use | 2

2 Before Use
Read these instructions carefully and follow the recommendations for use stepby step. We are happy to give you additional notes and explanations. Our con‐tact information is on the back cover of this manual.

2.1 Safety Information
The Bosch Motorsport Kit was developed for use by professionals and requires in
depth knowledge of automobile technology and experience in motorsport. Using
the system does not come without its risks.
It is the duty of the customer to use the system for motor racing purposes only
and not on public roads. We accept no responsibility for the reliability of the sys‐
tem on public roads. In the event that the system is used on public roads, weshall not be held responsible or liable for damages.
Any maintenance or repair must be performed by authorized and qualified per‐sonnel approved by Bosch Motorsport.
All system parts are designed to work together and may not be replaced withsimilar parts without our expressed permission (this includes the wiring harness).
For first time purchases, each team or owner must purchase a complete kit which
includes a wiring harness. Spare parts may be purchased after a complete kit has
been purchased. The use of unauthorized parts or wiring harnesses will not be
supported by Bosch Motorsport; additionally the system cannot be guaranteed
to work properly and/or without limitations.
It is essential that the predefined Bosch Motorsport assembly guidelines arecomplied with, see section Assembling the Parts [} 19], the system to run
properly. This applies above all for installing the MIL (malfunction indicationlamp) within the driver's range of visibility.

2.2 ABS in Motorsport
The ABS function is a compromise between drivability and braking performance.
Drivability is the primary focus for passenger based vehicles. The ABS is designed
to keep the passenger vehicle maneuverable and stable under any circumstances
and under any conceivable driving conditions.
Race ABS
Operating Range

Brake PerformanceStandard OEM ABS
Operating Range

Vehicle Stability During Braking

In a motorsport context, this compromise shifts towards braking performance, as
experienced drivers can still control a slightly unstable vehicle. Together with dif‐ferent tire structures and higher braking potential, a racecar is capable of greatly
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2 | Before Use

increased deceleration rates. To consider different chassis tuning and tires ABS
M4 Kit has nine control settings. They differ from each other belonging start andprocess of control. With this, the driver can choose the best setting for his vehi‐
cle. Furthermore, the ABS provides the opportunity to program two individual
control settings for you vehicle. For calibration drives, the ABS function can bedeactivated separately, whereby all ABS sensor signals are transmitted and pro‐
cessed furthermore.

2.3 Principle of Operation
ABS M4 is suitable for front-wheel, rear-wheel and four-wheel drive vehicles.
It is based on a series production ABS and adapted in years of development work
to meet motorsport requirements.
The ABS prevents the wheels from locking during braking. It does this by con‐stantly measuring the individual wheel speeds and comparing them with thewheel speeds predicted by the system. If, during braking, the measured wheel
speed deviates from the system's predicted wheel speed, the ABS controller
takes over, correcting the brake force to keep the wheel at the optimum slip leveland so achieving the highest possible deceleration rate. This is carried out sepa‐
rately for each wheel.
When the brake force is reduced by the ABS, brake fluid is released from thebrake caliper and fed into the pressure reservoir of the hydraulic power unit of
the ABS. The hydraulic power unit then feeds the fluid back into the master cylin‐
der via a piston pump driven by an electric motor. The driver can hear this return
pumping of the brake fluid and feel the response of the brake pedal.

2.4 Features
Note: In the following, we only refer to the Standard ABS scale. The Alternative
ABS scale is only used for DF11S, 1 Mbaut. You can use the Alternative ABS scale
if your ABS M4 Kit is switched off in position 1.

ABS scale standard

ABS scale alternative▪ Nine different control settings, selectable via a switch in the cockpit (position
1‐9)
The ABS map switch in the cockpit enables the driver to select various control
settings stored in the control device. Using the standard ABS scale, it starts
with switch position 1 for the most sensitive controller setting (e.g. heavy rain
condition). The response characteristic gets more progressive from position
to position. Finally, with switch position 9 the most progressive effect is ach‐
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ABS M4 Manual

Bosch MotorsportBefore Use | 2

ieved. With the different control settings, the driver can select the preferable
map for the vehicle, the racetrack and weather. Comment: The most progres‐sive braking characteristics leads not necessarily to best lap times. Rather the
position that allows the driver to feel the most comfortable will be the mostdesirable position.
▪ Two additional vehicle‐specific control maps storable (position 10 and 11)
Switch positions 10 and 11 are pre‐dated with a copy of position 9. Bosch‐Engineers can calibrate them individually for each customer.
▪ Switch off ABS functions for calibration drives (position 12).
You can switch off the ABS functions by switching to position 12. This can bevery helpful, e.g. for calibration of the brake balance adjuster. All ABS sensor
signals will still be communicated. Every older ABS M4 Kit Kit can be updated
to this function. During warm‐up we recommend to choose position 12.
Since software status V1017 no error entry takes place any longer.
▪ Measuring vehicle dynamics
Due to specially‐adapted chassis and tires, motor racing vehicles allow forsignificantly higher longitudinal and lateral acceleration rates than series pro‐duction vehicles. The ABS M4 Kit is designed to intervene after a correspond‐
ing amount of time. Our ABS M4 Kit sensors constantly measure vehicle ac‐celeration and rotation rates as well as the pressure of the front brake circuit.
The ABS control algorithms at the front brake circuit rely on the measure‐ments of acceleration and pressure.
▪ Programming and diagnosis software
Each ABS M4 Kit Kit is preprogrammed with specific data related to the vehi‐cle, such as vehicle mass, wheelbase, track width, tire rolling circumference,etc. Should the vehicle data change at any time, you can adapt the systemsettings by using the RaceABS diagnostic software. You find the software forfree download on our website www.bosch‐motorsport.de.
▪ There are further features to the software:▪ Performing a system function test
The system function test can diagnose the functional capability and profes‐
sional assembly of any part, without having to move the vehicle.
▪ Reading data from the error log
Any missing part or incorrectly connected electrical connection is signaled bya lit MIL (Malfunction Indication Lamp). In the error log you can read and an‐alyze what errors have set the MIL and then delete the errors after the issue
has been resolved.
▪ Repair Bleeding Wizzard
Step‐by‐step instructions will guide you through bleeding the ABS unit.
▪ Connectivity for data loggers and display
You can connect a data logger (e.g. the C 50 from Bosch Motorsport) to the
ABS‐Wiring‐Harness via CAN. The CAN Bus can give you wheelspeeds andother readings from the system. All ABS M4 Kit CAN messages can be dis‐played on any programmable, CAN‐compatible display (e.g. the DDU 7 from
Bosch Motorsport).
▪ Switch on and off the system with a switch in the cockpit
You can switch the system ON or OFF by moving the switch in the cockpit for
one time.
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2 | Before Use▪ Reset the System with a switch in the cockpit
You can reset the system by moving the switch to the position OFF and thendirectly again ON.
See also
2 Repair Bleeding Wizzard [} 35]

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ABS M4 Manual

Bosch MotorsportTechnical Data | 3

3 Technical Data
Mechanical Data
Hydraulic unit with attached ECU
Serial housing, dust‐ and damp‐proof
Vibration damped circuit board
38 pin connector
2 hydraulic valves per wheel
2 brake circuits (front and rear)
2 hydraulic high pressures pumps
2 hydraulic accumulators 3 cm3/eachStandard fittings

2 x master cylinders M12 x 1
4 x brake cylinders M10 x 1

Size

125 x 80.3 x 129.6 mm

Weightabout 1,850 g

Operating temperature‐30 to 130°C

Max. shock

50 g less than 6 ms

Electrical Data
Supply voltage

8 to 16 V, max. 26 V for 5 min

Max. peak voltage

35 V for 200 ms

Power consumption

8 W stand‐by, 230 W in operation

Inputs4 active wheel speed DF11
Brake pressure (front brake circuit)Longitudinal acceleration, lateral acceleration, yaw rate
9 adjustment settings applicable for OEMSs (Pos. 1‐9)
2 adjustment settings applicable for Temas (Pos. 10 and 11)
ABS function can be deactivated (Pos. 12)
Brake light switch
Outputs
ABS warning light (MIL)
Communication
CAN interface

Content of Kit and Weights

Bosch Motorsport

Hydraulic unit with attached ECU

About 1,850 g

Pressure sensor

About 40 g

Yaw/acceleration sensor

About 60 g

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3 | Technical Data

12 position function switch

About 50 g

4 wheel speed sensors DF11 standard

About 50 g/each

ABS warning light (MIL)

About 50 g

Vehicle specific wiring harness with mo‐ Depends on version
torsport connectors
Clubsport wiring harness

About 1,500 g

Mounting and vibration‐damping
boardsAbout 80 g

Mounting board for hydraulic unit

About 210 g

Optional Accessories
Data logger C 50

F 02U V01 164‐01

Data logger C 60

F 02U V00 875‐03

Display DDU 7

F 02U V01 130‐04

Communication interface MSA Box II

F 02U V00 327‐02

Wheel speed signal splitters
Quad with 2 motorsport connectors

F 02U V00 203‐03

Quad with 1 motorsport connector

F 02U V00 335‐03

Porsche 991 with 1 motorsport connec‐ F 02U V01 928‐01
tor

Field of application
ABS for front‐wheel, rear‐wheel or four‐
wheel drive racing cars

Part numbers
ABS M4‐Package 1 (incl. wiring harness with F 02UV00 289‐01
motorsport connectors, individual layout
depending on customer requirements,
wheel speed sensors with production‐typeconnectors)
ABS M4‐Package 2 (incl. wiring harness with F02U V00 290‐01
motorsport connectors, individual layout
depending on customer requirements,
wheel speed sensors with motorsport con‐nectors)
ABS M4‐Package Clubsport (incl. wiring har‐ 1MBaud:ness with motorsport connectors, wheel
F 02U V01 289‐49 (DF11S)
speed sensors with serial connectors)
F 02U V00 543‐13 (DF11i)
500 kBaud:F 02U V01 289‐48 (DF11S)
F 02U V00 543‐12 (DF11i)

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ABS M4 Manual

Bosch MotorsportAdaptations to Your Vehicle | 44 Adaptations to Your Vehicle
Physical vehicle data
For optimum brake performance, each M4 unit has to be customized to suit thevehicle in which it is to be used. To do this, the system can be programmed by
the user with certain data, such as the vehicle weight, vehicle dimensions, wheel
circumference, and wheel weight. The system then uses this data as basis for cal‐culation. Bosch can also program this data ahead prior to delivery on request,
however, it is very important that you calibrate or verify the data prior to operat‐
ing the vehicle.
You can find a form to fill in your vehicle data on www.bosch‐motorsport.com.
This form should be provided to you by your dealer with the order of the kit, if
the kit shall be programmed by Bosch.

Wiring harness
Each ABS system is delivered with a wiring harness that we have specifically cre‐ated in accordance with customer requests.
With every Clubsport ABS you receive an appropriate wiring harness, which is not
specifically created. Please see ‐‐‐ MISSING LINK ‐‐‐.

System environment and related requirements
Is the ABS system being used as a closed stand-alone system? Or is it networked with a control unit?
If the system is networked with a standard control unit, we recommend that you
use our speed/acceleration sensor with a CAN rate of 500 Kbaud/s to avoid com‐
patibility issues.
If the system is networked with a motorsport control unit or used as self‐suffi‐
cient stand‐alone‐system, we recommend that you use our speed/acceleration
sensor with a CAN rate of 1 Mbaud/s. This version features a greater measuring
range.
Was or is the vehicle already fitted with an ABS system? Was or is it an old
BOSCH ABS system?
The requires signals from differential dual Hallsensors such as the Bosch DF11 orsimilar to function correctly. These sensor types are used in new vehicles for ABS
and ESP® systems and can be carried over for the . The signal level of conven‐tional speed sensors, as found in old series‐production ABS systems for example,
is not compatible with the ; it is therefore not possible to carry over conventional
speed sensors as signal transmitters.
If your vehicle contains an older ABS system, you have to remove the wheel
speed sensors and replace them by the sensors includes in the package to beable to use the .
If you are fitting your vehicle with an ABS system for the first time, you may needan encoder wheel for each wheel and a sensor mount to record the wheel
speeds. Please pay attention to the fitting position of the wheel speed sensors.
Do the wheel speed signals also need to be made available to other control
units?
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4 | Adaptations to Your Vehicle

We have developed a wheel speed signal splitter that converts the signals in sucha way that they can also be processed by peripheral engine control units and da‐ta logging systems. The splitter provides an input signal like as it is shown in the
diagram in chapter ‐‐‐ MISSING LINK ‐‐‐. This module can be used, for traction
control, display and gear units. For ordering information see also ‐‐‐ MISSING
LINK ‐‐‐.
See also
2 Wheel Speed Signal Splitter [} 17]
2 Wiring Harness Clubsport [} 53]

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ABS M4 Manual

Bosch MotorsportIncluded in the Kit | 5

5 Included in the Kit
The following chapter introduces the contents of the different kits.

5.1 ABS M4 Kit 1
ABS M4 Kit 1 with part number F 02U V00 289‐01 always includes a wiring har‐ness. ABS M4 Kit 1 includes the following parts, which are also available as indi‐vidual spare parts (Hydraulic power unit only in exchange):
Description

Part Number

Hydraulic unit with attached ECU

Standard (for DF11S wheel speed sen‐sors): F 02U V00 866‐01
Alternativ (for DF11i wheel speed sen‐sors): F 02U 002 487‐01

Mounting plate for hydraulic unit with
attached ECU

0 265 Y44 520‐01

Brake pressure sensor

0 261 B08 072‐08

4 wheel speed sensors DF11

0 265 008 022
0 285 007 871 (old model)

Yaw/acceleration sensor

Standard 1 MBaud/s: 0 265 005 838
Alternative 500 kBaud/s:
F 02U V00 049‐02

Damping plate for yaw/acceleration
sensor

1 271 032 390

12‐position ABS map switch

F 02U V00 111‐03

ABS warning light (MIL) with electronic Bulb: F 02U V00 112‐01
control module
LED: F 02U V00 112‐02
Incl. wiring harness with motorsport
connectors, customer‐specific layout,
wheel speed sensors with production‐
type connectors.

Similar to connection diagram
F 02U S00 043‐09, see Wiring Diagram
ABS M4 [} 50]

5.2 ABS M4 Kit 2
ABS M4 Kit 2 includes all the parts from Kit 1, with the exception of a different
wiring harness with motorsport connectors for the wheel speed sensors.

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5 | Included in the Kit

5.3 ABS M4 Kit Clubsport
There are a few variants of the ABS M4 Kit Clubsport available:
Description

Part Number

ABS M4 Kit Clubsport (1 MBaud, DF11S) F 02U V01 289‐49
ABS M4 Kit Clubsport (500 kBaud,DF11S)F 02U V01 289‐48

ABS M4 Kit Clubsport (1 MBaud, for
DF11i)F 02U V00 543‐13

ABS M4 Kit Clubsport (500 kBaud, for
DF11i)F 02U V00 543‐12

ABSM4 Kit includes all parts from Kit 1, but a different wiring harness, which can‐not be modified. By default the wiring harness includes a 60 Ohm terminal resist‐ance, which can be replaced customer specific by a 120 Ohm or deleted com‐pletely, see wiring diagram ABS M4 Clubsport.
Description

Part Number

Wiring harness Clubsport

F 02U V01 917‐01

See also
2 Wiring Diagram ABS M4 Clubsport [} 51]

5.4 Connector Overview Kit 1
ABS M4 Kit 1 with part number F 02U V00 289‐01 includes the following connec‐
tors, which are also available as individual spare parts:
Connector forPart Number

Attached control unit connector

Standard
wire departure on top: F 02U B00
238‐01
wire departure on top 90°: F 02U B00
238‐01
Alternativ
wire departure on bottom: F 02U B00
237‐01
wire departure on bottom 90°: F 02U
B00 237‐01

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Brake pressure sensor
Compact 3‐pin connector

D 261 205 335‐01

12‐positon ABS map switch
ASL 006‐05SE‐HE

F 02U 000 230‐01

ABS warning light (MIL)
ASL 006‐05SA‐HE

F 02U 000 226‐01

ABS M4 Manual

Bosch MotorsportIncluded in the Kit | 5

Connector forPart Number

Wheel speed sensor
Tyco 2‐pin connector

F 02U B00 241‐01

Yaw/acceleration sensor
Tyco 4‐pin connector

F 02U B00 435‐01

Diagnosis connector K‐line

F 02U 000 258‐01

Wheel speed signal splitter ABS‐sided
AS 612‐35 SN

F 02U 000 443‐01

Jumper connector for wiring harness
without wheel speed module
AS 112‐35 PN

F 02U 000 304‐01
or
F 02U B00 354‐01

Data‐logger intersection
ASL 006‐05SD HE

F 02U 000 229‐01

Mating connector overview ABS M4‐Paket 1
Connector forPart Number

Brake pressure sensor

D 261 205 335‐01

12‐position ABS map switch

F 02U 000 230‐01

ABS warning light (MIL)F 02U 000 226‐01

Wheel speed sensor

F 02U B00 241‐01

Yaw/acceleration sensor

F 02U B00 435‐01

5.5 Connector Overview Kit 2
ABS M4 Kit 2 with part number F 02U V00 290‐01 includes a harness with all theconnectors from Kit 1, with the exception of different connectors for the wheel
speed sensors:
Connector forPart Number

Wiring harness sided
ASL 006‐05PN‐HE

F 02U 000 342‐01

Sensor sided
ASL 606‐05SN‐HE

F 02U 000 416‐01

5.6 Connector Overview Kit Clubsport
ABS M4‐Kit Clubsport with part numbers F 02U V01 289‐49, F 02U V01 289‐48, F
02U V00 543‐13 or F 02U V00 543‐12 includes all connectors of Kit 1, but differ‐
ently the encoding connector:
Anschlussstecker für

Teilenummer

Encoding connector CAN wiring harness‐ F 02U B00 246‐01
sided
Super Seal 2‐pole

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5 | Included in the Kit

Anschlussstecker für

Teilenummer

Encoding connector CAN with a 60 Ohm F 02U B00 247‐01
resistor
Super Seal 2‐pole

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Bosch MotorsportOptional Accessories | 6

6 Optional Accessories
The following chapter introduces the optional accessories for the ABS Kit, which
are not included in the kit.

6.1 MSA Box II
ABS M4 communicates with your laptop via the MSA Box II. It has a USB connec‐
tion to the laptop and a motorsport connector to interface with the ABS M4 wire
harness. Communication via K‐line.
Description

Part Number

MSA Box II

F 02U V00 327‐03

6.2 Wheel Speed Signal Splitter
The from Bosch Motorsport relies on specifically‐designed wheel speed signals,
delivered exclusively from active speed sensors, e.g. from the Bosch DF11 family.
These sensors are used in current ABS and ESP® systems. The four speed sensors
included in the Kit meet this classification. The signal of a regular speed sensor,
as found in older series production ABS applications, is not compatible with ;they could not be used as signal providers. It is an “open collector” signal which
grounds the voltage at the ECU input with every flank. Bosch Motorsport has de‐veloped a wheel speed signal splitter that converts the sensor signals in such a
way that they can be processed by peripheral ECUs and data recording systems.
This signal splitter is available e.g. for measuring vehicle speed or traction con‐trol. The signals of the different wheel speed signal splitters:

Description

Part Number

Wheel speed signal splitter quad with 1 F 02U V00 335‐03
motorsport connector
Wheel speed signal splitter quad with 2 F 02U V00 203‐03
motorsport connectors
Wheel speed signal splitter Porsche 991 F 02U V01 928‐01
with 1 motorsport connector

NoticeBosch Motorsport

The wheel speed signal splitter with 1 connector cannot be
used with the standard wiring loom design without changes in
the layout.

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6 | Optional Accessories

6.3 Data Logger C 70
All data can be stored on a CAN‐compatible data logger. We recommend to use
our C 70 data logger for storing data.
Bosch Motorsport provides a standardized CAN log in DBC format for analyzing
recorded CAN data, see chapter ABS_M4.dbc.
Description

Part Number

Data Logger C 70

F 02U V02 302‐01

6.4 Display DDU 9
The display DDU 9 has an internal data store with a capacity of 3 GB and cansubstitute an external data logger. Therefore you need no additional data logger
if you use DDU 9.

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Description

Part Number

Display DDU 9

F 02U V02 300‐022

ABS M4 Manual

Bosch Motorsport

Assembling the Parts | 7

7 Assembling the Parts
The following chapter introduces the parts of the ABS Kit.

7.1 Hydraulic Power Unit with attached Control
Unit
1

2

3

4

5

6

8

Up

7

1

Hydr. Power Unit with attached Control Unit

5

VL = Brake cylinder front left

2

HL = Brake cylinder rear left

6

HZ1 = Brake master cylinder front

3

HR = Brake cylinder rear right7

HZ2 = rake master cylinder rear

4

VR = Brake cylinder front right8

Connector

The hydraulic power unit with attached control unit has six hydraulic connections— two for the two master cylinders (one each for the front and rear axles) and
four for the brake lines.

CautionThe hydraulic power unit is prefilled with brake fluid. Duringassembly, make sure as little brake fluid as possible is lost.
When installing the hydraulic power unit, make sure the brake line connections
are facing upwards to ensure air can be bled out to the brakes. Secure the hy‐
draulic power unit to the assembly plate supplied with the Kit using the three
M6x1 screw threads on the underside of the casing. To reduce vibration, rubber
pads should be fitted between the assembly plate and the vehicle chassis. To al‐
low easy connection of the main ABS ECU connector, maintain a 10 mm distance
between the vehicle chassis and the bottom of the assembly plate.

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7 | Assembling the Parts

NoticeCorrect position for installation – brake line connections should
face upwards.
Install with rubber pads/blocks to reduce vibration.
Leave 10 mm or larger gap in between the vehicle chassis andbottom of assembly plate.
Hydraulic power unit is already filled with brake fluid.
For more on assembly: See Offer Drawing: Hydraulic Power Unit
with attached Control Unit [} 45].

NoticeConform to FIA rules
With only 8 valves the ECU fulfills the FIA requirements for GT
3.

7.2 Brake Pressure Sensor

The brake pressure sensor is installed into the front axle brake circuit between
the master cylinder and the hydraulic power unit. The sensor is metric thread,M10x1. Before assembly, fill the sensor with brake fluid, e.g. with a small medical
syringe. So the brake system can be fully bled, the measuring hole of the brakepressure sensor should point upwards.

NoticeOnly use the supplied brake pressure sensor, otherwise will be
destroyed.
Install into the front axle brake circuit between the master cylinder and the hydraulic power unit as far away from the power
unit as possible to avoid vibration-caused damages.
Fill sensor with brake fluid before installing.
For more on assembly: See Offer Drawing: Brake Pressure Sen‐sor [} 46].

7.3 Wheel Speed Sensors

Bosch Motorsport ABS M4 needs special edited wheel speed signals, which aresupplied only from active speed sensors like e.g. from Bosch DF11‐family. These
double hall sensors operate on the differential principle. The ABS M4 needs all
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Assembling the Parts | 7

four speed sensors to function; otherwise the system assumes there is an error
and shuts down. You should therefore only use the speed sensors as supplied in
the ABS M4‐Kit (see section ‐‐‐ MISSING LINK ‐‐‐).We can offer different DF11
versions on request for specific vehicle designs. Existing mounted wheel speed
sensors can be tested and approved by us.
Pay attention to the polarity when you are connecting wheel speed sensors.
The sensor must be installed in the right direction, i.e. the encoder wheel andsensor must lie in the defined installation position (fixation screw in rotation po‐sition of the encoder wheel). The sensor will not work if it is installed in a position
other than the recommended installation position. Make sure the sensor ismounted and secured as tight as possible to prevent sensor errors or failuresfrom vibration. You can find the sensor's dimensions and how to install the sen‐sor on ‐‐‐ MISSING LINK ‐‐‐.

NoticeUser only differential sensors, like Bosch DF11 or similar.
Securely mount sensors and pay attention to correct mounting
position (sensors direction sensitive). Sensor holder as stiff aspossible.
Sensor measures and implementation of sensor holder you canalso find in the --- MISSING LINK ---.
See also
2 Wheel Speed Signal Splitter [} 17]
2 Offer Drawing: Wheel Speed Sensor [} 48]

7.4 Encoder Wheel
Encoder wheels usually have 48 teeth. The tooth/gap ratio should be approx.
50 % and the teeth should be approx. 3 mm in height. The encoder wheel must
be made of a ferromagnetic material. If required, Bosch Motorsport can provide
technical documentation on positioning the encoder wheel. See the back coverof this booklet for our contact information.

7.5 Distance between the Sensor and the
Encoder Wheel
You can adjust the distance between the sensor and the encoder wheel to fit theencoder wheel's dimensions and other installation conditions, but gap is normal‐
ly between 0.8 ± 0.1 mm.

NoticeBosch Motorsport

User a ferromagnetic incremental wheel.
Leave a 0.8 ± 0.1 mm gap between sensor and encoder wheel.
For more on assembly: See the outline drawing on Offer Draw‐
ing: Wheel Speed Sensor. [} 48]

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7 | Assembling the Parts

7.6 Gyro/Acceleration Sensor

The gyro/acceleration sensor is specific to the system and should be mounted as
close as possible to the center of gravity of vehicle. The sensor should be assem‐
bled with the supplied damping plate. Position the sensor so that the connector
is pointing towards the rear of the vehicle.

NoticeOnly use the provided kit sensor.
Use the damping plate.
Make sure the sensor is facing the correct direction (see image
above).
For more on assembly: See the Offer Drawing: Gyro/Acceleration
Sensor [} 49].

7.7 ABS Map Switch

While driving, the driver can use the ABS map switch to select different control
settings and find the optimum setting for his/her driving style. For this reason,
make sure the switch is mounted within reach of the driver. Many have found it
helpful to fit a diagram showing the current switch position, see also diagram on‐‐‐ MISSING LINK ‐‐‐. The switch position is also broadcast on the CAN Bus so it
can be displayed with a dash (e. g. the DDU 7 from Bosch Motorsport).

NoticeOnly use the supplied ABS Map Switch.
Don´t exceed the max. tightening torque of 1-2 Nm. Higher
torque will cause stiffness and damage.
See also
2 Features [} 6]

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7.8 ABS warning light (MIL)

Light bulb

LED

Front-panel cut

The included wiring harness is structured in such a way that the power supply to
the ABS warning light (MIL) is branched off before the main switch for ABS M4(terminal 30). This is the only way to ensure that the ABS warning light (MIL) is onwhen ABS M4 is not working.
Cable length connector to electronic board: 600 mm

NoticePosition the ABS warning light (MIL) so the driver can see it
easily.
MIL is on permanent if ABS map switch is in position OFF or
the diagnosis software is active.

7.9 Diagnosis Interface

You can connect the a laptop with the optional MSA Box II, see section ‐‐‐ MISS‐ING LINK ‐‐‐, via the "diagnosis interface" connector. The diagnosis interface
connector should be placed so it is easily accessible. You can use programmingand diagnosis software, see section ‐‐‐ MISSING LINK ‐‐‐, to program settings
specific to the vehicle and open/delete error messages.
Before using the MSA Box II for the first time you have to install a driver on yourlaptop, which you can find for free download on our homepage www.bosch‐mo‐
torsport.de.
See also ‐‐‐ MISSING LINK ‐‐‐See also
2 MSA Box II [} 17]
2 Programming and Diagnosis Software [} 27]
2 ABS M4‐Laptop Communication [} 26]

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7 | Assembling the Parts

7.10 Brake Light Switch
The brake light switch informs the when the driver wishes to brake and therefore
functions as a means of plausibility certification for the ABS system. If the brakelight switch signal is not available or incorrect, there may be a delay in ABS con‐trol.
▪ If a brake light switch is already fitted in your vehicle:
During braking, the brake light switch emits 12 Volts to pin 30 of the control
unit; see the wiring diagram at the end of this manual (Wiring Diagram ABS
M4 [} 50]). Terminal 15 on the brake light switch cable remains open.
▪ If a brake light switch has not yet been fitted in your vehicle:
Retrofit a brake light switch if your vehicle does not have one already. In this
scenario, terminal 15 supplies the voltage for the brake light switch.
In all cases there must be 12 Volts on pin 30 of the control unit every time thebrake light switch is active (driver is braking).

NoticePin 30 sends the braking signal to the ABS control unit – always make sure it is connected (12 Volt)!
Terminal 15 remains open if the vehicle already has a brakelight switch.
Terminal 15 supplies the voltage to a retrofit brake lightswitch.

7.11 Brake Lines
Use rigid steel tubes for the brake lines. Use flexible lines only when you have noother option available. This keeps the volume consumption low and the ABS
needs less controlling.
The hydraulic unit is secured in the vehicle on the provided mounting plate. Dur‐ing operation, the hydraulic unit will vibrate. These vibrations are then transfer‐
red to the brake lines. To prevent vibration‐induced damage to the brake lines,
they must not be secured at a distance of up to 20 cm from the hydraulic unit sothat they can vibrate freely.

Notice24 / 56

We recommend using rigid metal brake lines; use flexible lines
only at points where they are necessary.
Do not secure brake lines 0 to 20 cm from the hydraulic unit.
The unit vibrates and would cause risk of damage to the lines.
Please use brake lines with a minimum inside diameter of 3.2mm.

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Assembling the Parts | 7

7.12 General: Brake Calipers
Use brake calipers that are as stiff as possible. Any flexing will create higher fluid
volume consumption. During ABS operation there will be a significantly higher
load on the brake piston seals. For this reason, brake piston seals will require
more frequent monitoring.

NoticeBosch Motorsport

Monitor brake piston seals more often.
Use brake calipers that are as rigid as possible.
The higher the brake pressure is, the larger is the elasticity ofthe brake. A blocking pressure of max. 80 bar is optimal.

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8 | ABS M4‐Laptop Communication

8 ABS M4‐Laptop Communication
The MSA Box II from Bosch Motorsport is the communication interface between
and the programming and diagnostic software on your laptop.
Before installing the programming and diagnostic software you need to install
the MSA Box II driver.

Installing the MSA Box II driver:
Before using the MSA Box II for the first time you need to install a specific driveron your laptop. Find the driver for free download on our website www.bosch‐motorsport.de.

NoticePlease make sure that the MSA Box II is not connected to thelaptop while you are installing the driver.
Connect the MSA Box II to the laptop after installing the driver. This will trigger
the initial communication between the laptop and the MSA Box II. Follow any
prompts that may follow to install the MSA Box II. Once you complete any
prompts and computer recognizes the MSA Box II, the MSA Box II is ready foruse.
Steps:
1. Unplug the MSA Box II from the laptop.
2. Install the driver.
3. Plug the MSA Box II into the laptop.

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Bosch MotorsportProgramming and Diagnosis Software | 9

9 Programming and Diagnosis Software
The following chapter introduces the programming and diagnosis software.

9.1 Installing the Programming and Diagnosis
SoftwareAfter installing the MSA Box II you need to install the programming and diagnos‐
tic software RaceABS 1.1.x. You can find the software including the installation for
free download on our website: www.bosch‐motorsport.de.
Switch on the ignition
Plug the MSA Box's USB connector into your laptop and its motorsport connec‐
tor into the wire harness diagnostic interface to enable communication. A green
status indicator shows when the connection is successful.
The installation will place an icon on your desktop to the RaceABS software. Afterthe installation is complete, you can launch the application by clicking on the
RaceABS icon. If you try to launch the software without the MSA Box II being
connected to the laptop, the status indicator in Explorer flashes red and yellow
and an error message appears in the status bar:

The following problem message pops up when either the ABS‐ECU gets no pow‐
er supply (e.g. ignition OFF) or the MSA Box II is not connected to the wiring har‐ness. Please make sure that the connection between the diagnosis software and
MSA Box II is assured:

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9 | Programming and Diagnosis Software

Colors of the status indicator
In online mode, the status indicator can shine in the following colors:
red

no connection

yellow

Connection in progressor
MSA Box II cannot create a connection with the ABS (e.g. ABS
switched off)green

Connection successful

red‐yellow MSA Box II is not connected to Laptop
flashing

Change between Online‐ and Offline‐Mode
When no connection exists, it is easier to operate with the diagnosis software in
online mode. Please click on the ABS‐symbol with the right mouse button tochoose between online and offline mode in the status indicator:

Notice28 / 56

You can only change the status when the ABS tree is closed.

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Bosch MotorsportProgramming and Diagnosis Software | 9

9.2 Features of the Programming and Diagnosis
Software
The following chapter introduces features of the programming and diagnosis
software.

9.2.1 Properties
The ABS‐ECU sends coded data to the diagnosis software. The Fps‐File decodes
this information and describes the error message as plain text. If you install thesoftware you get the right file, which shows the error message in plain text.
If you don´t see plain text or if there is a red colored warning, you do not havethe suitable Fps‐File to your software.

Please refer to the error message, which software and version of ABS is installed
and download the appropriate Fps‐File. You can download this at our Home‐
page, where you can find the most common versions.
If you need a changed and individual adapted version of the diagnosis software,please contact your dealer or the OEM customer service. After that we will deliver
you the suitable Fps‐File.
To select the file of the diagnosis software, please open the window “properties”
on the left side and choose “LocationFPSFile”. Click on the quadratic button be‐side and a new window will open. Allocate the file to the Fps‐File.

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9 | Programming and Diagnosis Software

9.2.2 Support
The support section provides an easier handling of the management and the ex‐change of the ABS‐data. To open the support‐window, please click on the “Sup‐port” button on the left side.
You can execute the following features only in the online modus.

ExportTo save the whole settings and error messages (vehicle data ABS, vehicle data
ASR, testing, ECU info) simultaneously, fill in a name and a comment in the given
fields and click on the button “Save”.
If there are problems, you can send the exported file to your dealer or OEM cus‐
tomer service.

SystemPlease contact your dealer or the OEM customer service if errors occur that you
are not able to fix by yourself. In this case, please send a log‐ and export file.
Click on the button “Open folder” to find the log file.

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Bosch MotorsportProgramming and Diagnosis Software | 99.2.3 Vehicle Data
We preprogram each ABS‐ECU before delivery. Basis for this preprogramming
are the physical data of your vehicle. Prior to delivery, you send us your vehicle
data and we will program them in the ABS.
If you need to replace the ECU or modify the programmed vehicle data, you can
update the data in the software by yourself.
Within the windows “Vehicle Data ABS” and “Vehicle Data ASR” a short declara‐tion or the measuring unit for each value can be shown. By holding the cursor
over a data range, a small window with the declaration occurs.

You can save and open the vehicle data of the windows “Vehicle Data ABS” and“Vehicle Data ASR” separately. Therefore, you click in the window with the rightmouse. In this way a text file can be loaded into the system or the actual window
can be saved.

NoticeOnly the active window will be saved.

Default value for the ABS map switch
For the 12‐position ABS map switch, you can specify a default value. If the func‐tion switch breaks down, the switch automatically takes the position of the de‐fault value. To assign a position for the default value, select a number between
one and twelve in the window “Default Multiswitch position”:
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9 | Programming and Diagnosis Software

YawRate/ACC Sensor Part Id
Each ABS‐ECU communicates only with defined sensors. To connect the ABS‐ECU
with a different sensor, you have to fill in the number of the sensor in the field“YawRate/ACC Sensor Part Id”:
From software number V00906 on you don´t have to fill in the sensor number
anymore because with the latest software versions the ABS‐ECU can adjust to thesensors automatically.

9.2.4 Testing
After assembling the system components you need to carry out a function test
before the first test drive. This test will ensure all components (electrical and hy‐
draulic) were assembled correctly and are functioning properly. The vehicle
should be placed on four jack stands or on a hoist so that all four wheels can be
moved freely. If there is no other option you can lift and test each wheel sepa‐
rately. You will need an assistant to help you check the hydraulic allocation of thewheels.
Step 1: Testing the communication with the ECU
See section ABS M4-Laptop Communication [} 26].
Step 2: Testing the indication lamp SILA
When you turn the ignition or on, the SILA light turns on briefly and then turns
off again. The indication lamp SILA lightens permanently as soon as the RaceABS
software is started; see also section ECU Info (Diagnostics) [} 36].
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Step 3: Testing the correct wheelspeed allocations
With the vehicle jacked up, individually spin all four wheels clockwise and checkfor the proper front/back, left/right allocation. When you spin each wheel thecorresponding position should show a value in the RaceABS software under the“Testing” tab:

Step 4: Testing the wheels' correct hydraulic allocation
Have an assistant apply the brake pedal and maintain the brake pressure so all
four wheels of the jacked up vehicle are locked. Therefore a brake pressure of 15
to 20 bar is sufficient. Unblock successively on wheel and brake after the other byclicking on “Release Brake”. The selected wheel must then be able to spin.

NoticeFor vehicles with a high blocking effect you have to provide a
respectively higher torque to perform the test.
Check the hydraulic allocation for each wheel. Wait for the wheels to be fixedagain before continuing with the next step:

Step 5: Testing the electrical pump motor
If you click on the "Pump" button, the pump motor should run for 10 seconds or
until the same button would be pressed again.

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9 | Programming and Diagnosis Software

Step 6: Testing the function of the brake pressure sensor and brake lightswitchStart the RaceABS with connection to the MSA Box II and press the brake pedal
for a few seconds with slowly rising pressure. At a pressure value between 3 and5 bar the digital display „Brake switch“ bit should toggle from 0 to 1 (see graphic
below). Please adjust the brake light switch in an adequate position. If the bit
does not toggle, check the switch connection and ensure that it is connected
properly, see section Brake Light Switch [} 24].
The digital display „Pressure sensor“ should show a logical value, e.g. 3,87 in thescreenshot below. If the software displays no value or an illogical value, open the“ECU Info” tab and check the error memory. Do you find errors relating to thebrake pressure sensor? See section ECU Info (Diagnostics) [} 36] for more in‐formation regarding ECU diagnostic errors:

Step 7: Testing the function of the ABS Map switch
Turn the 12‐position ABS Map switch through full rotation. Is the “Multiswitch”‐
Display showing a reaction for each rotary motion? With every clockwise rotation
the number of measuring points should increase by 1.ABS warning light (MIL)should shine permanent in switch position 12 (OFF).

Notice34 / 56

MIL shines permanent in diagnosis mode.

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Bosch MotorsportProgramming and Diagnosis Software | 99.2.5 Repair Bleeding Wizzard
Under the “Testing” tab of the RaceABS software you will also find two buttons at
the bottom right labeled “Repair bleeding” and “Repair bleeding (Balance Bar)”
with the button “Start wizard”.
While you bleed your brake system you can choose between the two programs“Repair bleeding” and “Repair bleeding (Balance Bar)”:

NoticeBosch Motorsport

The Bleeding Wizzard is only for bleeding the ABS hydraulicpower unit. The Bleeding Wizzard is NOT to be used or substituted for bleeding the other parts of the brake system, likelines and brake cylinders. Make sure to bleed these other hydraulic parts of the brake system after bleeding the hydraulicaggregate with the Repair Bleeding Wizzard.
During the ABS bleeding process the brake pedal should be actuated continuously except when opening or closing brake
bleeder valves.

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9 | Programming and Diagnosis Software

Repair bleeding (Tandem MC)
You choose “Repair bleeding (Tandem MC)” if your vehicle executes the same
brake pressure to front and rear axle when you actuate the brake pedal.
Click on the button “Repair bleeding (Tandem MC)”: a new window will open andleads you step by step through the instruction for bleeding the hydraulic aggre‐
gate. You will need an assistant to perform the ABS bleeding procedure.

Repair bleeding (Balance Bar)You choose “Repair bleeding (Balance Bar)” if you vehicle has a break balance bar
and executes different brake pressure to front and rear axle when you actuate
the brake pedal.
Click on the button “Repair bleeding (Balance Bar)”: a new window will open andleads you step by step through the instruction for bleeding the hydraulic aggre‐
gate. You will need three persons to perform the instruction.

NoticeFor vehicles with brake balance bar please open one front and
one rear bleeder valve for proper function of the balance bar
during the bleeding routine procedure.

9.2.6 ECU Info (Diagnostics)
Indication lamp
When you turn the ignition or on, the ABS warning light (MIL) comes on briefly
and then turns off again. This indicates the light's self‐testing process. If the ABS
warning light (MIL) does NOT light up when you turn the ignition or on, youmust establish the reason for this before taking any further action or before driv‐
ing the vehicle. Maybe the light bulb is not tightened firmly.

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NoticeThe ABS warning light (MIL) is on permanently as long as thediagnostic tool switched on.
Error log
If the warning light (MIL) is on PERMANENTLY when you turn the ignition or on,
or while driving, there is a system error. Extract the system's internal error log toanalyze the error. You can access the log by clicking on “ECU Info” tab in the
RaceABS software.

The following list shows the most common error log entries and their descrip‐tion:

NoticeBosch Motorsport

Multi switch = ABS Map switch

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9 | Programming and Diagnosis Software

NoticeSystem reset after drive cycle defaults.
Drive cycle defaults, e.g. because of wheel speed sensor bug,need an ABS-ECU reset (Power off – Power on). After the reset,
the car has to accelerate to more than 12 km/h for system
check.
Save error log entries
If any error log entries occur that are not listed above, please contact your dealeror the OEM customer service. Communication would be easier if you send also a
copy of your error log entries. There are two possibilities to get the copy of theerror log entry:
Click on the right button named “Save faults”
Click with your right mouse button into the FPS window and save the entries withclick on „Save ECU‐Info“.

Delete error log entries
After carrying out the problem‐solving actions, delete the entry from the error
log by clicking on the “Clear faults” button, as seen below:

Then turn off and on again. After you deactivated the software, the indication
lamp will no longer lit.

NoticeIf not all the faults are described in clear text or if there is noerror description, please check if you use the correct FPS-file orcontact Bosch Motorsport for update.
Ignition Cycle Counter
The ignition cycle counter shows how often you switched on the ignition. If you
compare the values of the ignition cycle counter and ICC at Failure Occurrence
you can trace back at what time the faults occurred. If both fields show the samevalues, it is an actual fault.

RTA Function
The RTA is a tire‐tolerance‐adjustment.

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Due to tire quality and tire pressure, the wheels have not the same rotation
speed. To compensate these differences the ABS systems takes one wheel as ref‐erence and multiplies the wheel speed of each wheel with a factor so that all
wheels have the same speed. By this, the ABS system can determine if the vehicle
is in a curve or on straight road.

RTA Reset
To reset the factors the ABS system assigned to the wheels (all factor 1), pleaseright‐click on the button “ECU Info” and then on the button “RTA Reset”. This re‐
set is necessary e.g. if the vehicle has driven in a circle for a long time. Then thesystem has adapted to the cornering and considers that you are driving on astraight road.

NoticeOnly execute a RTA reset if the system has adjusted (e.g. after
circular driving).

NoticePlease be aware that after the RTA reset the system has to relearn.
Drive after a RTA reset constantly with up to 100 km/h until the system has reca‐
librated. Drive without acceleration and without depressing the brake pedal.
See also
2 Properties [} 29]

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10 | Appendix

10 Appendix
The following chapter introduces the Startup Checklist, the CAN Protocol and the
ABS_M4.dbc.

10.1 Startup Checklist
This short checklist is intended to supplement the ABS M4 Kit’s manual, not re‐place it. Prior to using this checklist the user/installer should read the ABS man‐ual, especially section Assembling the Parts [} 19] to ABS M4-Laptop Communi‐
cation [} 26].

Basics▪ Hydraulic unit with attached control unit mounted correctly (mounting plate
used, brake lines facing upwards), see section Hydraulic Power Unit with at‐tached Control Unit [} 19].
▪ Brake pressure sensor and Yaw/Acceleration sensor installed in proper loca‐
tions? See section Brake Pressure Sensor [} 20] and Gyro/Acceleration Sen‐sor [} 22].
▪ Everything plugged in to harness, power ring terminals connected to battery,ground ring terminals connected to solid and clean chassis ground, circuit
breakers installed properly, ABS toggle switch turns off system. See section
Brake Pressure Sensor [} 20] and Gyro/Acceleration Sensor [} 22].

Software Tool and Error Checking▪ Connect to the ABS M4 control unit with MSA Box II using RaceABS Softwareand ensure that all vehicle data has been entered correctly. The vehicle data
can be saved and or loaded by right clicking in the screen.

NoticeOnce the diagnosis software RaceABS is connected to the harness, the ABS warning light (MIL) will light up and remain lit
until it is disconnected. See section Testing [} 32], Step 2. If the
MSA Box II is not connected to the laptop the indication lamp
lightens red-yellow.
▪ With the system on, switch to the “ECU Info” page and clear errors with click‐ing on Clear FPS. Wait a moment (system will self‐refresh error stack). Resetthe system by switching off/on. Check if any errors reappear in the error
stack. If errors reappear, diagnose errors before proceeding. If anything was
unplugged during the diagnostic process, errors will be present and need tobe removed from the error stack. Next, cycle ABS on/off switch and verify noerrors are present after cycling power, see section ECU Info (Diagnostics)[} 36].

Error Notes▪ CAN errors can occur if there are too many errors in the stack.
▪ If the wheel speed signal splitter is disconnected all four wheel speed sensors
will have error entries.
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Appendix | 10

Function Check▪ While connected with the RaceABS software switch to the “Testing” page.
Check all sensors for plausibility and proper function. Press brake pedal:
brake switch bit should toggle (0‐>1) between 3 to 5 bar brake pressure, thedisplay “Pressure sensor” should show a logical value. Rotate ABS map
switch, the value “Multiswitch” should turn up clockwise. Manually move
yaw/accelerometer sensor to the right and left as well as to the front andrear. The “Ax” and “Ay”‐values should increase positive or negative analogue
to the Tilt. See section Testing [} 32].
▪ Put the car on jack stands so all wheels can be freely rotated. While connec‐
ted with the RaceABS software and viewing the "Testing" page, rotate eachwheel and verify the correct wheel speed responds in the "Testing" page, seesection Testing [} 32].
▪ Click "Pump On" button on the “Testing”‐page. The pump now runs for 10
seconds or until you press the button again. After the pump shuts off, an as‐
sistant hold the brake pedal down (Please check: all wheels have to belocked!) Next, while the assistant still holds brake pedal down, click the "Re‐lease Brake" button for a given wheel (one at a time). Verify that brake relea‐
ses at that wheel by rotating the wheel before clicking the next button. Re‐
peat for each wheel.

NoticeDuring this release test, the pump may switch on repetitively.
See chapter: Testing [} 32]▪ On the "Testing" page now decide between the "Repair Bleeding (TandemMC)" and “Repair Bleeding (Balanced Bar)”. Click on the button “Start wizard”
at the bottom right. Follow the instructions listed in the sub window in orderto bleed the ABS hydraulic unit.

NoticeThis will bleed the ABS hydraulic unit only, not the brake lines
or the wheel brake cylinders.
See chapter: Repair Bleeding Wizzard [} 35]▪ Bleed brakes in normal fashion, starting with the furthest brake from themaster cylinder and finishing with the nearest. Check errors one last time, di‐agnosis any errors present, then disconnect MSA Box II from ABS harness.
Once MSA Box II is disconnected verify that MIL lamp turns off and stays off.
▪ Check for proper brake operation at low speeds first. Start with ABS map
switch in a neutral position (position 5 to 7).

NoticeRefer to manual for more information regarding the ABS map
switch position function. See chapter: ABS in Motorsport [} 5]and Features [} 6].
▪ ABS warning light (MIL) on for a short time when you switch on the ignition,
on permanent when map switch in position 12 (OFF).

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10 | Appendix

10.2 CAN Protocol
Name

MessageStartbit

Length (Bit)

Byte Order

Value TypeInitial ValuePSIP1 (Yaw)

0x70

0

16

Intel

Unsigned‐163,84

AY1

0x70

32

16

Intel

Unsigned‐4,1768

PSIPP (YawAcc)

0x80

0

16

Intel

Unsigned

‐4096

AX1

0x80

32

16

Intel

Unsigned‐4,1768

WS_FL

0x24A

0

16

Intel

Unsigned

0

WS_FR

0x24A

16

16

Intel

Unsigned

0

WS_RL

0x24A

32

16

Intel

Unsigned

0

WS_RR

0x24A

48

16

Intel

Unsigned0

SwitchState

0x5C0

0

Intel

Unsigned

0

P_Hz

0x5C0

8

16

Intel

Signed

0

BLS

0x5C0

24

1

Intel

Unsigned0

EBD Lamp

0x5C0

30

1

Intel

Unsigned0

ABS Active

0x5C0

29

1

Intel

Unsigned0

ABS Lamp

0x5C0

31

1

Intel

Unsigned0

AX1_Bremse60

0x5C0

32

16

Intel

Unsigned‐4,1768

AY1_Bremse60

0x5C0

48

16

Intel

Unsigned‐4,1768

Continuation:
Name

FactorOffset

Min

Max

Unit

Rate (ms)Comment

PSIP1 (Yaw)

0,005‐163,84‐163,84‐163,83°/s

10

Yaw Rate

0,00012742‐4,1768‐4,1768‐4,1765g

10Lateral Acceleration (Ay)

0,125

‐4096

‐4096

‐4095

°/s

10

Yaw Acceleration

AX1

0,00012742‐4,1768‐4,1768‐4,1765g

10

Longitudinal Acceleration (Ax)

WS_FL

0,015625

0

0

100

m/s

10

Wheel Speed Front Left

WS_FR

0,015625

0

0

100

m/s

10

Wheel Speed Front Right

WS_RL

0,015625

0

0

100

m/s

10

Wheel Speed Rear Left

WS_RR

0,015625

0

0

100

m/s

10

Wheel Speed Rear Right

1

0

0

12

10

ABS Map Switch Position

P_Hz

0,0153

0

‐42,5

425

10

Brake Pressure

BLS

1

0

0

1

Brake Light Switch

EBD Lamp

1

0

0

1

EBD Fault Lamp

ABS Active

1

0

0

1

ABS Active Bit

ABS Lamp

1

0

0

1

ABS Fault Lamp

AX1_Bremse60

0,00012742‐4,1768‐4,1768‐4,1765g

10

Longitudinal Acceleration (Ax)

AY1_Bremse

0,00012742‐4,1768‐4,1768‐4,1765g

10Lateral Acceleration (Ay)

AY1
PSIPP (YawAcc)

SwitchState

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ABS M4 ManualbarBosch Motorsport

Appendix | 10

To avoid redundant messages while connecting the ABS‐CAN to the vehicle‐
CAN, please keep in mind that the ABS system sends further messages as fol‐lows:Bosch Motorsport

0x140

0x340

0x542

0x75

0x141

0x341

0x560

0x80

0x142

0x342

0x576

0x143

0x343

0x5C0

0x24A

0x541

0x70

ABS M4 Manual

43 / 56

10 | Appendix

44 / 56

ABS M4 Manual

Bosch MotorsportOffer Drawing: Hydraulic Power Unit with attached Control Unit | 11

11 Offer Drawing: Hydraulic Power Unit with attached Control Unit

Bosch Motorsport

ABS M4 Manual

45 / 56

12 | Offer Drawing: Brake Pressure Sensor

12 Offer Drawing: Brake Pressure Sensor

0 261 B08 072 06

46 / 56

ABS M4 Manual

Bosch MotorsportMounting Instructions: Brake Pressure Sensor | 13

13 Mounting Instructions: Brake Pressure Sensor
Bosch Gasoline Systems, P81 | 2703373053 DRW 001 03 | SAP-Status 40 | Labor F28 | Change F030GD000901

Ausgedruckt am 13.02.2009 von ole2fe

Ausdrucke und Kopien unterliegen nicht dem Änderungsdienst
Bosch Motorsport

ABS M4 Manual

47 / 56

14 | Offer Drawing: Wheel Speed Sensor

14 Offer Drawing: Wheel Speed Sensor

48 / 56

ABS M4 Manual

Bosch MotorsportOffer Drawing: Gyro/Acceleration Sensor | 15

15 Offer Drawing: Gyro/Acceleration Sensor

Bosch Motorsport

ABS M4 Manual

49 / 56

16 | Wiring Diagram ABS M4

16 Wiring Diagram ABS M4

50 / 56

ABS M4 Manual

Bosch Motorsport

Wiring Diagram ABS M4 Clubsport | 17

17 Wiring Diagram ABS M4 Clubsport

Bosch Motorsport

ABS M4 Manual

51 / 56

18 | Wiring Harness in general

18 Wiring Harness in general
Adjustment / Function Switch
ASL 1 06-05 SE-HE
204W221-25/225-0
SW_Function

Breaker - ETA 40A
2 x Ring Terminal Ø 4 mm
Black
S1

B1_2

50

Battery +12V
Ring Terminal Ø 8 mm
Red
Batt+_S3

A

50

B1_3

B1_6

B1_

C

38

25

13

1

RR Wheel Speed
F02U.B00.241-01.
RR_WS

On/Off Switch
8868K4
202K111-25-0
SW_ON/OFFR

Pin 1 u. 25

D1

7

Brake Pedal Switch
open wires
SW_brake

B

Diagnostic Interface
ASL 0 12-35 SN
202K132-25-0
Diag_ABS

B2

1 928 40

Yaw / Lat. Accel.
F02U.B00.435-01
.
Yaw

B1_5

A1

F02U.B00.238-01

50

_4
B1

C1

0
10

Breaker - ETA 10A
2 x Ring Terminal Ø 4 mm
Black
S3

B1

100

M1

Battery +12V
Ring Terminal Ø 8 mm
Red
Batt+_S1
Battery +12V
Ring Terminal Ø 8 mm
Red
Batt+_S2

100

L

Wire length MIL-electronic component to connector: 600 mm

50

Front Brake Pressure
D 261 205 334-01
202K111-25-0
Pbrake_F

ABS M4 Connector
1928.405.168
Cover
1928.404.982
222K132-25-0
ABS M4

Wire length Map Switch ABS: 500 mm

Breaker - ETA 25A
2 x Ring Terminal Ø 4 mm
Black
S2

50

50

_1
B1

Malfunction Lamp
ASL 1 06-05 SA-HE
204W221-25/225-0
MIL

D2

D

B3
RL Wheel Speed
F02U.B00.241-01
.
RL_WS

A2
CAN Intersection
ASL 1 06-05 SB-HE
204W221-25/225-0
SP/CAN

B4

100

0
10

FL Wheel Speed
F02U.B00.241-01.
FL_WS

Wheel Speed Interface
AS 6 12-35 SN
202K132-25-0
SP/WS Interface

FR Wheel Speed
F02U.B00.241-01.
FR_WS

Brückenstecker
F02U.B00.304-01.

1 928 40

R

Note(s):- Harness to be laid out as shown in the diagram to the left.
- ABS M4 connector can be oriented as shown on the far left.
- Please read ABS M4 Manual for mounting instructions of the ABS M4 unit
- All dimensions are in mm.

L

R

38

13

1 928 40

1

L

TOP

Kabelabgang
"TOP"

25

Wire Exit: top 90 deg
F02U.B00.238-01

C-Sport Logger Intersection
ASL 0 06-05 SD-HE
204W221-25/225-0
SP/C-Sport

Battery GND - Motor
Ring Terminal Ø 8 mm
Blue
GND - M

Please select the required wire exit !!

Kabelabgang"TOP 90"

B5

A3

M2

Battery GND - Valve
Ring Terminal Ø 8 mm
Blue
GND - V

Wire Exit: top straight
F02U.B00.238-01

DOWN
TOP
Wire Exit: down 90 deg
F02U.B00.237-01

Wire Exit: down straight
F02U.B00.237-01
R

1 928 40

RL

L

1 928 401

25

20130628
05 update
04 wire exit main connector 2010.07.15
03 Connector correction2010.04.20
02 SP//CAN - SB 2008.03.02
2008.12.03
01 initial drawing

38

Kabelabgang"DOWN"

13

Kabelabgang"DOWN 90"

HtM
A. Nitsc he
A. Stauffer
Alex Wood
Bergenske

.
.
.
.
.

.
.
MSD-NAMSD-NAMSD-NA

BEG/EMS3
BEG/EMS3
BEG/MSD-NA
BEG/MSD-NA
BEG/MSD-NA

.
.
.
.
.

DOWN
F.02U.V00.xxx-05

F.02U.S00.043-09

ABS M4 Harness-Project Name- ABS M4
F.02U.V00.xxx-05

39

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ABS M4 Manual

Bosch Motorsport

Wiring Harness Clubsport | 19

19 Wiring Harness Clubsport

Bosch Motorsport

ABS M4 Manual

53 / 56

19 | Wiring Harness Clubsport

54 / 56

ABS M4 Manual

Bosch MotorsportBosch Engineering GmbH
Motorsport
Robert-Bosch-Allee 174232 AbstattGermany
www.bosch-motorsport.com