BENDIX M-21-M-22 ANTILOCK MOD ASSY Especificaciones Pagina 50
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4 Component Replacement
46
Meritor WABCO Maintenance Manual MM-0112 (Revised 05-13)
1. Follow the ESC End of Line Calibration Procedure described in
this manual.
2. When the ESC End of Line Calibration Procedure is completed,
the ABS and ATC/ESC lamps should come on and go back off
when ignition power is turned on. The ATC/ESC lamp may
remain on briefly after the ABS lamp goes off.
3. There should not be any active faults displayed in the ECU
memory.
Brake Pressure Sensor
Removal
WARNING
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. Serious personal injury and
damage to components can result.
1. Turn the ignition switch to the OFF position. Apply the parking
brake.
2. Place blocks under the front and rear tires to prevent the
vehicle from moving.
3. If necessary, raise the vehicle off the ground and place safety
stands under the vehicle.
WARNING
Relieve line pressure by bleeding the air from the appropriate
supply tank. Pressurized air can cause serious personal injury.
4. Relieve line pressure by bleeding the air from the
appropriate supply tank.
5. Disconnect the wiring harness connector from the brake
pressure sensor. Figure 4.17.
Figure 4.17
6. Disconnect the air line or unscrew the brake pressure sensor
from the air line fitting.
7. Remove the brake pressure sensor.
Installation
1. Connect the brake pressure sensor to the air line or attach the
sensor to the air line fitting.
2. Connect the wiring harness connector to the brake pressure
sensor. Hand tighten only.
3. Remove the stands and blocks.
4. Test the installation.
Test the Installation
To test the brake pressure sensor:
1. Turn the ignition on and verify that the ATC/ESC lamp operates
correctly.
2. Start the vehicle and fully charge the reservoirs with air. Shut
off the vehicle.
3. Apply the brakes and check for air leaks at the brake pressure
sensor.
4. There should not be any active faults displayed in the ECU
memory.
Figure 4.17
4006870a
- 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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