Servicing the TABS-6 Module

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Bendix Technical Assistance Team

For direct personal technical support, call the Bendix technical assistance team at:

1-800-AIR-BRAKE(1-800-247-2725),

Monday through Friday, 8:00 A.M. to 6:00 P.M. EST, and follow the instructions in the recorded message.

Alternatively, you may e-mail the Bendix technical assistance team at: tbs.techteam@bendix.com.

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 configuration.

• Vehicle make and model.

• Vehicle configuration. (Number of axles, tire size, etc.)

• System performance symptoms: When do they occur?

•What faults 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?

CAUTION: All 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 fault 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 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.

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 all 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™or MC-30™controller pigtail harness.

2.Remove all air hoses and plugs connected to the unit.

3.Remove the MC-12™or MC-30™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- configure to another ABS configuration if additional sensors and/or ABS modulators are detected. An incorrect ABS configuration may cause fault 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