BENDIX M-21-M-22 ANTILOCK MOD ASSY Especificaciones Pagina 5
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1 Introduction
1
Meritor WABCO Maintenance Manual MM-0112 (Revised 05-13)
1 Introduction
Contents
This manual contains service information for the following systems.
앫 E version Meritor WABCO Anti-Lock Braking System (ABS)
앫 Automatic Traction Control (ATC)
앫 Roll Stability Control (RSC)
앫 Electronic Stability Controls (ESC) for trucks, tractors and buses
The ABS version is marked on the ECU. Figure 1.1. If you cannot
identify the ECU version installed on your vehicle, contact Meritor
WABCO OnTrac at 866-OnTrac1 (668-7221).
Figure 1.1
For Additional Information
Diagnostic and testing procedures for other ECU versions can be
found in the following manuals.
앫 C version ECUs — Maintenance Manual 28, Anti-Lock Braking
Systems (ABS) for Trucks, Tractors and Buses
앫 D version ECUs — Maintenance Manual 30, Anti-Lock Braking
Systems (ABS) for Trucks, Tractors and Buses
Refer to the following manuals for Trailer ABS diagnostics and
information.
앫 Maintenance Manual 33, Easy-Stop™ Trailer ABS
앫 Maintenance Manual MM-0180, Enhanced Easy-Stop™ Trailer
ABS with PLC
System Components
Electronic Control Unit (ECU)
The ECU is the control center or “brain” of the ABS, RSC and ESC
systems. It receives information from the sensors, processes data
and sends signals to modulators and active braking valves to
achieve different tasks. Depending on the system and vehicle
configuration, ECUs are available for cab- or frame-mounted
applications and are divided into Basic Cab, Universal Cab, Frame
and Advance Frame models. RSC and ESC systems are only
available on universal and advance frame ECUs. Figure 1.2.
Figure 1.2
Wheel Speed Sensing Systems
Wheel speed sensing systems consist of a tooth wheel mounted on
the hub or rotor of each monitored wheel and a speed sensor
installed with its end against the tooth wheel. The sensor
continuously sends wheel speed information to the ECU. A sensor
clip holds the sensor in place and against the tooth wheel.
Figure 1.3.
Figure 1.3
Figure 1.1
4010603a
Figure 1.2
Figure 1.3
UNIVERSAL
ECU
FRAME-MOUNTED
ECU
BASIC
ECU
4003974a
1002009b
SENSOR
CLIP
SENSOR
TOOTH
WHEEL
- For E Version ECUs 1
- 12-Volt and 24-Volt Systems 1
- Contents 3
- 1 Introduction 5
- System Components 5
- ATC Components 10
- ATC Switch 10
- XX Orientation 11
- ZZ Orientation 12
- YY Orientation 12
- ESC Components 13
- Figure 2.8 14
- Hill Start Aid (HSA) 15
- Maintenance Information 16
- ABS Indicator Lamp 16
- Diagnostics 17
- TOOLBOX™ Software Diagnostics 17
- 4010611a 18
- 4010612a 18
- 4010613a 18
- 4010614a 18
- Definitions 19
- Clear Mode 20
- Blink Code Illustrations 22
- Blink Code Conditions 23
- Blink Code Identification 24
- Wheel Speed Sensor Testing 25
- Modulator Valve Testing 26
- BAYONET-STYLE CONNECTOR 27
- OPEN-STYLE CONNECTOR 27
- CAB MOUNT ECU’S: 28
- Figure 3.18 29
- 4010617a 30
- 4010619a 30
- 4010620a 30
- Electrical Checks 31
- Software 32
- Figure 3.26 or Figure 3.27 33
- PRESSURE SENSOR CONNECTOR 34
- ESC CAN Network Testing 35
- ESC Module Testing 35
- ESC Module Mounting 36
- ECU Circuit Testing 38
- Figure 3.44 40
- Figure 3.45 40
- 4 Component Replacement 41
- Hazard Alert Messages 41
- 472 500 30. 0 44
- MADE IN GERMANY 44
- 001 20/98 44
- DO NOT MOVE OR RELOCATE 49
- 6S/6M ABS 51
- 4S/4M ABS/ATC 51
- 4S/4M RSC/ATC 52
- 4S/4M ESC/ATC 52
- ECU Connector Pin Assignments 53
- ECU (Frame-mounted) 54
- 4004027d 55
- 4004030i 56
- Figure 6.8 57
- Figure 6.9 58
- Figure 6.10 59
- Figure 6.11 60
- Figure 6.12 61
- Figure 6.13 62
- Figure 6.14 63
- 7 SPN SID FMI Fault Codes 64
- SPN SID FMI Fault Code List 64
- 4010669a 88
- 4010670a 88
- 4010671a 88
- 8 Appendix I 89
- 9 Appendix II 91
- Troy, MI 48084-7121 98
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