Bendix
TABS-6 Trailer ABS Module
®
ECU Cover
(Sealed)
Integrated
Modulator
Relay Valve
3/4" NPT
Supply Port
Four (4) 3/8" NPT
Delivery Ports
(To Brake Chambers)
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-configurable 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 filter to help prevent foreign material
from entering the control port.
3/8" NPT Control
Port with
Integral Filter
ECU Connector
Cover
(Removable)
Wheel Speed
Connectors
Through-holes
for Frame
(Chassis)
Mounting
Part Number
Label
(See Page 31)
ECU Pin-out Label
(See Page 31)
Sensor
To Remove Cover
Slide Lock Tab
TABLE OF CONTENTS
General System Information
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safe Maintenance Practices . . . . . . . . . . . . . . . . . . .2
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Mounting Configurations. . . . . . . . . . . . . . . . . . . . . .2
PLC Communications . . . . . . . . . . . . . . . . . . . . . . . .2
Wiring Harness (Pigtail) . . . . . . . . . . . . . . . . . . . . . .3
Power and Ground . . . . . . . . . . . . . . . . . . . . . . . . . .4
ABS Indicator Lamp . . . . . . . . . . . . . . . . . . . . . . . . .4
Wheel Speed Sensors . . . . . . . . . . . . . . . . . . . . . . .5
BR9235
ABS Modulator Valve . . . . . . . . . . . . . . . . 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-Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .8
Odometer Function . . . . . . . . . . . . . . . . . . . . . . . . . .8
Non-standard Tire Size . . . . . . . . . . . . . . . . . . . . . . .8
Diagnostic Trouble Code Detection . . . . . . . . . . . . . 8
Blink Code Diagnostics. . . . . . . . . . . . . . . . . . . . . . .9
Bendix ABS Diagnostic Tools . . . . . . . . . . . . . . . . . 13
Contacting Bendix. . . . . . . . . . . . . . . . . . . . . . . . . .14
Servicing the Module . . . . . . . . . . . . . . . . . . . . . . .14
Removing the Module. . . . . . . . . . . . . . . . . . . . . . .14
Service Replacement using the Module . . . . . . . . . 15
Reinstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Leakage And Operational Tests . . . . . . . . . . . . . . . 15
ABS Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 17-27
The ECU Connector
Varies for Standard and
Premium - See Chart
The Standard TABS-6
Module uses a
5-Pin Connector
The Premium TABS-6
Module uses an
18-Pin Connector
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