Bendix Commercial Vehicle Systems TABS-6 TRAILER ABS MODULE - Manual (Page 15)

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follow the instructions in the recorded message.
Alternatively, you may e-mail the Bendix technical
assistance team at: [email protected].
To better serve you, please record the following
information before you call the Bendix Tech Team,
or include this information in your e-mail:
• Bendix product model number, part number and
confi guration.
• Vehicle make and model.
• Vehicle confi guration. (Number of axles, tire size, etc.)
• System performance symptoms: When do they occur?
• What faults have been identifi ed using LEDs, blink
codes or diagnostic tools?
• What troubleshooting/measurements have been
performed?
• What Bendix service data literature do you have or
need?
SERVICING THE TABS-6 MODULE
CAUTION: All TABS-6 modules are initially
defaulted to 2S/1M and may auto-confi gure to
another ABS confi guration if additional sensors
and/or ABS modulators are detected. An incorrect
ABS confi guration may cause fault indication or
degraded ABS performance. Before and after
activating a self-confi guration, always check the
current ABS confi guration by using blink code
diagnostics or a diagnostic tool.
Prior to performing service to the TABS-6 module, always
perform the following steps:
1. Follow all Safe Maintenance Practices including, but
not limited to, those on page 2 of this document.
2. Turn power off.
3. Drain the air pressure from all reservoirs.
4. Remove as much contamination as possible prior to
disconnecting electrical connections and air hoses.
5. Note the TABS-6 module's mounting position on the
vehicle.
REMOVING THE TABS-6 MODULE
1. Open the cover by sliding the locking tab to the left.
Retain the cover.
2. Disconnect the 5- or 18-pin ECU connector and the two
2-pin wheel speed sensor connectors.
3. Mark for reinstallation and then remove all air hoses
and plugs connected to the module.
4. Remove the module from the vehicle by removing the
mounting fasteners or by rotating the entire assembly
counter-clockwise from the tank mount.
SERVICING THE CONTROL PORT FILTER
The TABS-6 module has an in-line fi lter in the control port
(See Figure 1). This fi lter should be inspected and cleaned
(if any contamination is found), every four months, 34,000
miles or 1,200 operating hours. For severe applications,
this inspection interval may be reduced. If the fi lter is found
to be damaged, install a replacement. The fi lter should
also be inspected as part of any troubleshooting where
the service brakes are slow to apply and other possible
causes have been ruled out.
SERVICE REPLACEMENT OF
OTHER ABS CONTROLLERS
The TABS-6 module is designed to be used as the
service replacement part for the Bendix
® MC-12 ™ ,
MC-30 ™ and A-18 ™ trailer ABS controllers. When
controller service replacement parts are required, a
TABS-6 module and pigtail harness must replace the
entire MC-12
™ , MC-30 ™ or A-18 ™ controller assembly and
pigtail harness. When replacing an MCE-12 ™ controller,
the integral emergency function (EV-2 ™ valve) must be
replaced by a DC-4 ® and TR-3 ™ valve combination. See
pages 18-21 for plumbing details. TABS-6 module kits are
available to replace MC-12
™ , MC-30 ™ and A-18 ™ controller
assemblies and harnesses. For more information, contact
Bendix or your local authorized Bendix parts outlet.
1. Disconnect the power connector and wheel speed
sensors from the MC-12 ™ , MC-30 ™ or A-18 ™ controller
pigtail harness.
2. Remove all air hoses and plugs connected to the
unit.
3. Remove the MC-12 ™ , MC-30 ™ or A-18 ™ controller
assembly and pigtail from the vehicle by removing the
mounting bracket nuts or by rotating the entire assembly
counter clockwise from the tank nipple mount.
4. Install the new pigtail, starting at the power connector
and properly securing the harness every 18 inches to
the ECU location.
5. Next, refer to the Reinstallation of the TABS-6 Module
section.
REINSTALLATION OF THE TABS-6 MODULE
CAUTION! All TABS-6 module service replacement
parts are initially defaulted to 2S/1M and may auto-
confi gure to another ABS confi guration if additional
sensors and/or ABS modulators are detected. An
incorrect ABS confi guration may cause fault indication
or degraded ABS performance. Before and after
activating a self-confi guration, always determine the
current ABS confi guration by activating blink code
diagnostics.
Inspect the original mounting hardware: If it is in good
condition, it can be reused for installation. If replacement
hardware is needed, use grade-5 3/8-18 bolts, nuts and