BENDIX BW2786 데이터 시트
Typical Tractor System Schematic with ESP
®
Stability
Typical Truck System Schematic with ESP
®
Stability
Troubleshooting Bendix
Troubleshooting Bendix
®
®
ESP
ESP
®
®
Stability System
Stability System
Front
Axle Reservoir
Rear
Axle Reservoir
Supply
Reservoir
ADB-22X
™
Disc
Brake
E-8P
®
/ E-6
®
Brake Valve
AD-9
®
/
AD-IP
®
Air Dryer
Safety
Valve
Tu-Flo
®
550/Tu-Flo
®
750/
BA-921
®
/ BA-922
®
Air Compressor
PP-DC
®
Park
Control Valve
PR-3
™
/
PR-4
™
Valve
Low
Pressure
Indicator
Indicator
To Accessories
SR-7
®
Spring Brake
Modulating
Valve
WS-24
™
Wheel
Speed Sensor
WS-24
™
Wheel
Speed Sensor
ES
™
Drum Brake w/
ASA-5
®
Automatic
Slack Adjuster and
Service Chamber
ES
™
Drum Brake w/
ASA-5
®
Automatic Slack
Adjuster and SB-4
™
Spring Brake Chamber
ADB-22X
™
Disc
Brake
Antilock
Traction
Traction
Relay Valve
YAS-60
™
Yaw
Rate & Lateral
Acceleration
Sensor
SAS-60
™
Steering Angle
Sensor
EC-60
™
Electronic
Controller
Controller
Advanced
Stop
Light
Switch
M-32
™
/
M-32QR
™
Modulator
(4 places)
Antilock
Traction
Traction
Relay
Valve
Valve
Orifi ce Check
Valve
WS-24
™
Wheel
Speed Sensor
Notes:
The color coding of the brake system schematic follows TMC Recommended Practice
#423.
Air disc & drum brake actuation combined on a single axle are shown for pictorial
purposes only.
Charging Primary Secondary Park Parking Accessories
(Supply) (Control)
TRUCKS AND TRUCK TRACTORS:
ECU DIAGNOSTICS
The EC-60
™
controller contains self-testing diagnostic circuitry that continuously checks for the
normal operation of internal components and circuitry, as well as external ABS components
and wiring.
and wiring.
Active Diagnostic Trouble Codes (DTCs)
When an erroneous system condition is detected, the EC-60
™
controller:
1. Illuminates the appropriate indicator lamp(s) and disengages part or all of the ABS, ATC
and ESP functions. (See Service Data Sheet.)
2. Places the appropriate trouble code information in the ECU memory.
3. Communicates the appropriate trouble code information over the serial communications
diagnostic link as required. Hand-held or PC-based diagnostic tools attach to the vehicle
diagnostic connector, typically located on or under the dash.
diagnostic connector, typically located on or under the dash.
When using our PC-based Bendix
®
ACom
™
Software, follow the on-screen troubleshooting
steps to correct any DTCs. A hand-held tool such as the Bendix Remote Diagnostic Unit (RDU)
provides direct access to the DTCs without the need to use blink codes.
provides direct access to the DTCs without the need to use blink codes.
BLINK CODES
Blink codes allow a technician to troubleshoot ABS problems in situations where a hand-held
or PC-based diagnostic tool is not available. Instead, information about the ABS system is
communicated by the ECU, using the ABS indicator lamp to display sequences of blinks.
or PC-based diagnostic tool is not available. Instead, information about the ABS system is
communicated by the ECU, using the ABS indicator lamp to display sequences of blinks.
Note: The ECU will not enter the diagnostic blink code mode if the wheel speed sensors show
that the vehicle is in motion. If the ECU is in the diagnostic blink code mode and then detects
vehicle motion, it will exit the blink code mode.
that the vehicle is in motion. If the ECU is in the diagnostic blink code mode and then detects
vehicle motion, it will exit the blink code mode.
In addition, by operating the blink code switch as described below, one of several diagnostic
modes can be entered. See Diagnostic Modes section below.
modes can be entered. See Diagnostic Modes section below.
Blink Code Switch Activation
When activating the blink code switch:
1. Wait at least two seconds after “ignition on.” (Except when entering Reconfi guration Mode
- see Service Data sheet.)
2. For the ECU to recognize that the switch is activated “on,” the technician must press for at
least 0.1 seconds, but less than 5 seconds. (If the switch is held for more than 5 seconds,
the ECU will register a malfunctioning switch.)
the ECU will register a malfunctioning switch.)
3. Pauses between pressing the switch when a sequence is required, (e.g. when changing
mode) must not be longer than 2 seconds.
4. After a pause of 3.5 seconds, the ECU will begin responding with output information blinks.
Troubleshooting: PC-based Troubleshooting, Blink Codes and Diagnostic Tools & Modes
Below: Bendix
®
Remote
Diagnostic Unit (RDU),
Right: Bendix
Right: Bendix
®
ACom
™
Diagnostics Software for
ABS
ABS
The information presented here is condensed from the troubleshooting section of the Bendix
®
EC-60
™
Advanced ABS Controller Service Data Sheet, SD-13-4869 available for download on www.bendix.com. Whenever possible, use a PC-based diagnostic tool, such as the Bendix
®
ACom
™
Software (free download from www.bendix.com) or hand-held Bendix
®
Remote Diagnostic Unit (RDU). The Bendix
®
ACom
™
Software uses on-screen troubleshooting steps to help correct any DTCs. The Bendix
®
ACom
™
Software (BW2329) may also be ordered on CD from the
Literature Center at www.bendix.com.
Blink Code Timing
The ECU responds with a sequence of blink codes. The overall blink code response from the
ECU is called a “message.” Each message includes, depending on the mode selected by the
technician, a sequence of one or more groups of blinks. Simply record the number of blinks for
each sequence and then use the brief troubleshooting index shown here, or full troubleshooting
information in the Service Data sheet, for active or inactive trouble codes.
ECU is called a “message.” Each message includes, depending on the mode selected by the
technician, a sequence of one or more groups of blinks. Simply record the number of blinks for
each sequence and then use the brief troubleshooting index shown here, or full troubleshooting
information in the Service Data sheet, for active or inactive trouble codes.
NOTE:
1. Sequences of blinks illuminate the ABS indicator lamp for half a second, with half-second
pauses between them.
2. Pauses between blink code digits are 1.5 seconds.
3. Pauses between blink code messages are 2.5 seconds.
4. The lamp remains on for 5 seconds at the end of the messages.
Once the ABS indicator lamp begins displaying a sequence of codes, it continues until all blink
code messages have been displayed and then returns to the normal operating mode. During
this time, the ECU will ignore any additional blink code switch activation.
code messages have been displayed and then returns to the normal operating mode. During
this time, the ECU will ignore any additional blink code switch activation.
All trouble codes, with the exception of voltage and J1939 trouble codes, will remain in an active
state for the remainder of the power cycle.
state for the remainder of the power cycle.
Voltage trouble codes will clear automatically when the voltage returns within the required limits.
All ABS functions will be re-engaged.
All ABS functions will be re-engaged.
J1939 trouble codes will clear automatically when communications are re-established.
www.bendix.com
www.foundationbrakes.com
C
S
Front
Axle Reservoir
Rear
Axle Reservoir
E-8P
®
/ E-6
®
Brake Valve with
BVA-85
™
Brake
Valve Actuator
MV-3
®
Control Valve
DC-4
®
Double
Check Valve
TCS-9000
™
Valve
YAS-60
™
Yaw
Rate & Lateral
Acceleration
Sensor
QR-1C
®
Quick
Release
Valve
AD-IS
®
Air Dryer
WS-24
™
Wheel
Speed Sensor
Rear Axle
Module (RAM)
with ATR-6
™
Traction
Relay Valve
Hose
Couplings
WS-24
™
Wheel
Speed Sensor
Tu-Flo
®
550/
Tu-Flo
®
750
BA-921
®
/ BA-922
®
Air Compressor
PP-5
™
Control
Valve
TP-3DC
™
Tractor
Protection
Valve
EC-60
™
Electronic
Controller
Controller
Advanced
ADB-22X
™
Disc Brake
ADB-22X
™
Disc Brake
Low Pressure
Indicator
To Accessories
M-32
™
/
M-32QR
™
Modulator
(4 places)
Antilock
Traction
Traction
Relay
Valve
Valve
SAS-60
™
Steering
Angle
Sensor
ES
™
Drum Brake w/
ASA-5
®
Automatic Slack
Adjuster and SB-4
™
Spring Brake Chamber
ES
™
Drum Brake w/
ASA-5
®
Automatic
Slack Adjuster and
Service Chamber
Stop Light Switch
Control
Supply
M-32
™
/ M-32QR
™
Modulator
BW2786 © 2009 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • All Rights Reserved • 08/09 • Printed in U.S.A.