Bendix Commercial Vehicle Systems TABS-6 TRAILER ABS MODULE - Manual

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Bendix ® TABS-6 Trailer ABS Module
FIGURE 1 - TABS-6 STANDARD AND PREMIUM MODULES
INTRODUCTION
The Bendix ® TABS-6 module is an integrated trailer ABS
controller and modulator for air-braked heavy-duty trailers,
semi-trailers and dollies. The module acts as a relay valve
during normal braking, but during ABS events, it will intervene
to help improve stability. All modules include an Electronic
Control Unit (ECU) and Modulator Relay Valve (MRV) which are
integrated into a single self-contained 2S/1M (two-sensor, one
modulator) trailer ABS unit. The Premium TABS-6 module is
auto-confi gurable to control more sensors and modulators (up to
4S/3M) from its default 2S/1M.
Bendix ® TABS-6 modules also feature:
• Internal electrical connections to the primary MRV,
eliminating the need for external pigtail harnesses.
• Optional mounting to the service reservoir or to the chassis,
without additional brackets.
• Blink code diagnostics and support for advanced diagnostic
tools.
• Support for Power Line Carrier (PLC) communication to the
towing vehicle.
• A pressure equalizing valve in the sealed ECU housing to
give improved protection from water, etc.
• A locking dust cover to provide additional electrical connector
and cable protection.
• A serviceable nylon fi lter to help prevent foreign material
from entering the control port.
TABLE OF CONTENTS PAGE
General System Information
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safe Maintenance Practices. . . . . . . . . . . . . . . . . . .2
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Mounting Confi gurations. . . . . . . . . . . . . . . . . . . . . .2
PLC Communications. . . . . . . . . . . . . . . . . . . . . . . .2
Wiring Harness (Pigtail) . . . . . . . . . . . . . . . . . . . . . .3
Power and Ground . . . . . . . . . . . . . . . . . . . . . . . . . .4
ABS Indicator Lamp . . . . . . . . . . . . . . . . . . . . . . . . .4
Wheel Speed Sensors . . . . . . . . . . . . . . . . . . . . . . .5
BR9235
™ ABS Modulator Valves . . . . . . . . . . . . . . .5
J1708/J1587 Diagnostic Link . . . . . . . . . . . . . . . . . .6
Auxiliary I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
ABS Flex
™ Program . . . . . . . . . . . . . . . . . . . . . . . . .6
Customer Scratch Pad . . . . . . . . . . . . . . . . . . . . . . .6
Power-up Sequence . . . . . . . . . . . . . . . . . . . . . . . . .6
ABS Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Auto-Confi guration . . . . . . . . . . . . . . . . . . . . . . . . . .8
Odometer Function. . . . . . . . . . . . . . . . . . . . . . . . . .8
Non-standard Tire Size. . . . . . . . . . . . . . . . . . . . . . .8
Diagnostic Trouble Code Detection . . . . . . . . . . . . .8
Partial ABS Shutdown. . . . . . . . . . . . . . . . . . . . . . . .9
Blink Code Diagnostics. . . . . . . . . . . . . . . . . . . . . . .9
Diagnostic Trouble Codes (DTCs) . . . . . . . . . . . . .10
Using Hand-Held or PC-Based Diagnostics . . . . . .13
Bendix ABS Diagnostic Tools . . . . . . . . . . . . . . . . .13
Contacting Bendix. . . . . . . . . . . . . . . . . . . . . . . . . .14
Servicing the TABS-6 Module. . . . . . . . . . . . . . . . .15
Removing the TABS-6 Module . . . . . . . . . . . . . . . .15
Service Replacement of Other ABS Controllers . . .15
Reinstallation of the TABS-6 Module . . . . . . . . . . .15
Leakage And Operational Tests . . . . . . . . . . . . . . .16
ABS Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 17-31
3/4" NPT
Supply Port
Through-holes
for Frame
(Chassis)
Mounting
Wheel Speed
Sensor
Connectors
ECU Pin-out Label
(See Page 31)
ECU Cover
(Sealed)
ECU Connector
Cover
(Removable)
Four (4) 3/8" NPT
Delivery Ports
(To Brake Chambers)
3/8" NPT Control
Port with
Integral Filter
The ECU Connector
Varies for Standard and
Premium - See Chart
Integrated
Modulator
Relay Valve
Part Number
Label
(See Page 31)
To Remove Cover Slide
Lock Tab
The Premium TABS-6
Module uses an
18-Pin Connector
The Standard TABS-6
Module uses a
5-Pin Connector
SD-13-4767