Troubleshooting guide

45
For more information, visit www.bendix.com or www.foundationbrakes.com • 1-800-AIR-BRAKE (1-800-247-2725)
• The Fail Safe Mode, which reverts the system to partial,
or full, non-ABS braking when certain Diagnostic
Trouble Codes (DTCs) are detected.
Additional Trailer ABS Features
Some optional/additional trailer ABS features are:
• Auxiliary Design Language (ADL) which allows
customized trailer features to communicate via the ABS
ECU with the tractor. Potential examples are: weight, lift
axle position, tire temperature and infl ation status, slider
pin position, refrigeration temperature, load presence
and proximity/reverse alarm.
• Auto-confi guration at power-up.
• Customer-defi ned data storage.
• Odometer functionality, including total, trip and service
interval tracking.
Advanced Trailer ABS Features
See the Schematic Diagram at the top of page 45.
Advanced trailer ABS features:
• Trailer Roll Stability Program (TRSP) that reduces
the risk of trailer rollovers during driving by automatic
application of the trailer service brakes.
• Modular design with integrated Electronics Control Unit
(ECU), pressure sensors, Lateral Acceleration Sensor
(LAS) and Modulator Relay Valve (MRV) — eliminating
external pigtail harness for these components.
• Extended operating voltage range: 8 to 32 volts.
The Bendix
®
TABS- 6 Advanced
The Bendix
®
TABS-6 Advanced system is the fi rst ever
single-channel trailer stability system. The system
will intervene automatically when detecting conditions
that may lead to a trailer rollover – typically before the
driver realizes an intervention is needed. The system
— a 2S/1M confi guration — provides quick and reliable
stability performance while simplifying installation and
maintenance, and is tank-mountable.
Trailer ABS Operation and Features, PLC, Troubleshooting
Control
Line
7-Pin
Connector
Ground
Ignition
Power
Bendix
®
Versajust
®
Automatic
Slack Adjuster
Bendix
®
SB-4
™
Spring Brake
Bendix
®
SR-5
™
Trailer
Spring Brake Valve
WS Sensor
“SR”
WS Sensor
“SL”
Bendix
®
TABS-6
™
Trailer
ABS
Module
MOD1
Dual Axle
Trailer
Indicator Lamp
Trailer
Chassis
Harness
Trailer ABS Pigtail Harness
5-Pin
Connector
Bendix
®
Cyclone
DuraDrain
®
Filtration
Units
Brake Light
Power
Supply
Line
Right -
“Curb-Side”
Left -
“Driver-Side”
A - Brake Light Power
B - Ignition Power
C - NC
D - Indicator Lamp
E - Ground
Example of 2S/1M Axle Control ABS Trailer Schematic