Lippert Anti-Lock Braking System (ABS) with CAN Bus OEM Installation Manual

Introduction

Anti-lock braking systems (ABS) are designed to improve trailer stability during severe braking events. When the ABS control is not active, or if there is no power to the ABS module, the tow brake signal from the vehicle will pass through to the trailer brakes, similar to a trailer without ABS technology. When the ABS system detects a wheel is about to lock, the brake signal to that specific wheel is reduced to maintain wheel rotation. The tow vehicle brake signal is monitored at all times, and a proxy load is in place to ensure ABS system compatibility with all tow vehicle brake controllers.

The system can send notifications to the driver via select Lippert mobile apps. A QR code is provided to find your app.

Key features of the anti-lock braking module:

• Module Auto-configuration: When installed per instructions, this feature accurately predicts tire size, track width, axle count, and module orientation.
• True Course (When equipped): Excessive trailer sway can result in loss of control. ABS and Lippert's True Course technology work together to detect trailer sway and engage trailer brakes independently of the tow vehicle to regain control. The system engages and disengages automatically, always defaulting to the tow vehicle brake input. ABS constantly monitors wheel speeds during True Course activation.
• Dynamic Brake Boost (When equipped): This feature can temporarily boost brake torque during hard braking events to maximize trailer braking performance. In an emergency or sudden braking event, delivering maximum brake torque without locking the trailer brakes can decrease total braking distance.

NOTE: Images used in this document are for reference only when assembling, installing, and/or operating this product. Actual appearance of provided and/or purchased parts and assemblies may differ.

For additional support on this product, please visit: https://support.lci1.com/lippert-anti-lock-braking-abs-system

Safety

Read and understand all instructions before installing or operating this product. Adhere to all safety labels.

This manual provides general instructions. Many variables can change the circumstances of the instructions, such as the degree of difficulty, operation, and ability of the individual performing the instructions. This manual cannot provide instructions for every possibility but offers general guidance for effectively interfacing with the device, product, or system. Failure to correctly follow the provided instructions may result in death, serious personal injury, severe product and/or property damage, including voiding of the Lippert limited warranty.

WARNING: The "WARNING" symbol indicates a safety risk involved that may cause death or serious personal injury if not performed safely and within the parameters set forth in this manual.

CAUTION: The “CAUTION” symbol indicates a safety risk that may cause personal injury and/or product or property damage if not safely adhered to and within the parameters set forth in this manual.

Always wear eye protection when performing service, maintenance, or installation procedures. Other safety equipment to consider includes hearing protection, gloves, and possibly a full face shield, depending on the nature of the task.

NOTICE: All electrical wiring harnesses shall be loomed and secured to prevent possible damage and installed in accordance with industry codes and standards.

Axle Mounting Orientation

To properly mount the Lippert axle to the coach frame, basic criteria must be met:

1. Camber must be oriented in the UP position. The center of the axle beam (Fig. 1A) must be higher than the ends of the beam (Fig.1B).
2. Electric Brakes will have the magnet lead wires (Fig. 2A) exiting the Backing Plate on the rear of the axle.
3. The wiring for the brakes (Fig. 2B) protruding from the axle tube must be oriented to the rear of the trailer.
4. An oval adjuster slot (Fig. 2C) must be located at the bottom of the axle.
5. The spring clip (Fig. 3A) must be oriented to the front of the trailer.
6. Silver Axle ID Tag (Fig. 4) must be located on the backside of the axle tube.

NOTE: Images used in this document are for reference only when assembling, installing, and/or operating this product. Actual appearance of provided and/or purchased parts and assemblies may differ.

Resources Required

• Cordless or electric drill or screw gun
• Appropriate drive bits
• Four self-tapping pan head screws
• Silicone sealant
• Utility knife

Installation

NOTICE: Lippert strongly recommends that all brake and ABS module ground wires be routed to the junction box of the trailer.

NOTE: This manual depicts a roadside installation. However, a curbside installation is possible by following the same general principles. It is recommended installers dry fit the harnesses prior to installation to make sure there is adequate length to attach the harnesses ends to the sensors.

1. Using four self-tapping screws, attach the control module to the frame rail (Fig. 5A). The module should be:
   • Located not more than 18" in front of the axle.
   • Parallel with the top web of the frame rail but not placed against the top web. The module will be harder to service if it is located too close to the top of the frame rail.
   • Mounted as level as possible.
   • Positioned with the VEHICLE FRONT indicator (Fig. 5B) pointing towards the front of the trailer.
2. Remove one of the two peel-off Bluetooth customer labels located on the control module (Fig. 5).
   • One sticker should follow the build sheet of the unit through production.
   • One sticker remains on the controller.
   • The owner's tag (Fig. 5) is taped to the control module and should be removed and placed in an interior cupboard or on support documentation to permit the end user to scan the QR code and determine the appropriate mobile app.
3. Connect the appropriate power harness to the control module port (Fig. 5). NOTE: There are variable lengths of power harnesses.
4. Connect the sensor harness to the control module and extend to the appropriate wheel speed sensors. NOTE: The harnesses are fixed lengths, including shorter harnesses that connect to the roadside wheels and longer harnesses for the curbside wheels.
5. Route harness along the frame (Fig. 11) so it terminates behind the pin box where it can be wired into the seven-way power cord (Fig. 12).
6. Route a wire that is grounded at the junction box at the front of the unit to the controller by connecting to the white wire of the sensor harness (Fig. 6A, 7A, 8A and 9A).
7. Route the harness ends (Fig. 6B, 7B, 8B, and 9B) to the wheel sensors through the typical frame cutouts and cross members. Install harnesses based on the length of each section and using the appropriate harnesses for single axle (Fig. 7), double axle (Fig. 8), and triple axle (Fig. 9).
8. Cut a slit in the underbelly near each brake hub and push the end of each sensor harness and brake power wire through this penetration.
9. Plug the CAN bus harness (Fig. 6C) into the exposed service connector on the sensor harness (Fig. 6D).
10. Route the other end of the CAN bus harness (Fig. 6E) to the CAN connector on another OneControl product in the trailer. NOTE: This can be whichever product is most convenient to route the harness to. Examples of other OneControl products include Unity multifunction boards, monitor panels, and levelers, among others. NOTE: The examples depict a roadside installation. For a curbside installation, the harnesses would be reversed.
11. Seal penetration with silicone sealant. NOTE: OEM may secure harness with whatever means are used to secure other unit harnesses.
12. Using best practices, leave access to the service connector (Fig. 6F) for conduction and End of Line system verification. NOTE: An exposed service connector (Fig. 6F, 7F, 8F and 9F) at the module will be used to connect to an End of Line Tool to verify the system is functioning properly.

13. Connect the harnesses to the wheel speed sensors (Fig. 10C) by connecting the male and female connector ends together (Fig. 10A).

14. Connect the harnesses to the brake magnet wires on the back of the brake assembly by connecting the male and female ends together (Fig 10B).

15. Wire the end of the power harness into the junction box of the seven-way power cord (Fig. 13)

• See Fig. 14 for RV 5th wheels/Travel Trailers/Campers.
• See Fig. 15 for Utility/Gooseneck/Cargo/Equipment Trailers

16. After installation is complete, plug in the End of Line Tool to the service connector to verify that wiring has been properly connected. Instructions for use are contained inside the tool case.

Harness Wire Colors

Single Axle

End of Line Tool harness: Pink and Brown

Double Axle

End of Line Tool harness: Pink and Brown

Triple Axle

End of Line Tool harness: Pink and Brown

ABS Power Harness

End of 14-pin ABS power harness pinout:

Seven-Way Cord That Plugs Into Tow Vehicle

RV 5th wheels/Travel Trailers/Campers

Trailer side seven-way plug in wire colors

Utility/Gooseneck/Cargo/Equipment Trailers

Trailer side seven-way plug in wire colors

Notes