Servicing The Bendix Tabs-6 Module; Service Replacement Of Other Abs Controllers - BENDIX TABS-6 Service Data

• Vehicle configuration. (Number of axles, tire size, etc.)
• System performance symptoms: When do they occur?
• What Diagnostic Trouble Codes (DTCs) have been
identified 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 BENDIx
All Bendix TABS-6 modules are initially defaulted
to 2S/1M and may auto-configure to another
ABS configuration if additional sensors and/or
ABS modulators are detected. An incorrect ABS
configuration may cause DTC indication or degraded
ABS performance. Before and after activating a
self-configuration, always check the current ABS
configuration by using blink code diagnostics or a
diagnostic tool.
Prior to performing service to the Bendix TABS-6 module,
always perform the following steps:
1. Follow all General Safety Guidelines including, but not
limited to, those on page two (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 Bendix TABS-6 module's mounting position
on the vehicle.
REMOVING THE BENDIx TABS-6 MODULE
1. Open the cover by sliding the locking tab to the left.
Retain the cover.
2. Disconnect the five (5)- or 18-pin Electronic Control
Unit (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 Bendix TABS-6 module has an in-line filter in the
control port (See Figure 1). This filter 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 filter is found to be damaged, install a
replacement. The filter 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.
16
TABS-6 MODULE
® ™
SERVICE REPLACEMENT OF
OTHER ABS CONTROLLERS
The Bendix TABS-6 module is designed to be used as
the service replacement part for the Bendix
MC-30 ™ and A-18 ™ trailer ABS controllers. When
controller service replacement parts are required, a
Bendix TABS-6 module and pigtail harness must replace the
entire Bendix MC-12, MC-30 or A-18 controller assembly
and pigtail harness. When replacing a Bendix
controller, the integral emergency function (Bendix
valve) must be replaced by a Bendix
valve combination. See pages 20-23 for plumbing details.
Bendix TABS-6 module kits are available to replace
Bendix 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 Bendix MC-12, MC-30 or A-18
controller pigtail harness.
2. Remove all air hoses and plugs connected to the
unit.
3. Remove the Bendix 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 Bendix TABS-6
module section.
REINSTALLATION OF THE
BENDIx TABS-6 MODULE
All Bendix TABS-6 module service replacement
parts are initially defaulted to 2S/1M and may auto-
configure to another ABS configuration if additional
sensors and/or ABS modulators are detected.
An incorrect ABS configuration may cause DTC
indication or degraded ABS performance. Before
and after activating a self-configuration, always
determine the current ABS configuration 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
lock washers for the frame-mount unit, or a schedule 80
(heavy gauge steel) ¾" nipple for the tank-mount unit.
Inspect the location selected for installation and clean as
necessary.
MC-12 ,
® ™
MCE-12
® ™
EV-2
® ™
DC-4 and TR-3
® ® ™