Haldex ITCM 1M Supplement

INSTALLATION/SERVICE
MANUAL
Stability Module (L31288W)
TM

Product Options
This manual has been designed to assist personnel in satifactory installation of Haldex ITCM
Stability Module onto semi and full trailers. The intention has been to illustrate various aspects
of the installation. It is expected that this manual will be in possession of the appropriate person
throughout their training and experience and that the manual will be used as:
A) A teaching aid following supervision of a Haldex engineer.
B) A reminder of the correct procedure of Haldex ITCM Stability.
Safety First
This manual describes the correct installation process for the Haldex ITCM Stability Module. Care
must be taken during each phase of the installation in order to ensure the system is installed and
working properly.
Please follow your company’s safety procedures at all times when installing this equipment.
Be sure that you understand all instructions before you begin.
Remove all air pressure and electrical power from the brake system before beginning work.
Replacement Parts
Use appropriate spare parts documentation when obtaining spare parts. Only use Genuine Haldex
replacement parts in repairs.
Questions?
If you have any questions on this product or any of the innovative products offered by Haldex,
contact your local distributor for complete details. Technical Service or Troubleshooting help can
be obtained by calling Haldex Technical Services Department at 800-643-2374, Press 2.
Important Notices
The products described within this literature, including without limitation, product features,
specifications, designs, availability and pricing are subject to change by Haldex and its
subsidiaries at any time without notice. This document and other information from Haldex,
its subsidiaries and authorized distributors provide product and/or system options for further
investigation by users having technical expertise. It is important that you analyze all aspects of
your application and review the information concerning the product or system, in the current
literature or catalog. Due to the variety of operating conditions and applications for these
products or systems, the user, through their own analysis and testing, is solely responsible for
making the final selection of the products and systems and assuring that all performance,
safety and warning requirements are met.
STABILITY MODULE
INSTALLATION/SERVICE
GUIDE (L31288W)
TM

Table of Contents
Introduction..........................................................................................................................2
ITCM Stability Module General Components
1M System Components.................................................................................................3
2M, 3M System Components .........................................................................................4
ITCM Stability Module Installation
Dimensions and Port Identification...............................................................................5
Orientation of the Stability Module..............................................................................6
Position of the Stability Module Assembly ................................................................. 7-9
Connecting/Disconnecting ITCM Stability Module to ITCM Connection Cable .........10
Handling Excess Cable ...................................................................................................11
Plumbing Requirements................................................................................................12
Plumbing Schematics
1M Stability Module Application ............................................................................13
2M Stability Module Application ............................................................................14
3M Stability Module Application ............................................................................15
ABS Configurations with Stability Module
2S/1M Single or Multi-Axle Trailers ..............................................................................16
2S/2M Side-By-Side Configuration (Multi-Axle Trailers)..............................................17
4S/2M Side-By-Side Configuration (Multi-Axle Trailers)..............................................18
4S/2M Side-By-Side Configuration (Multi-Axle Trailers with Lift Axles).....................19
4S/2M Axle-By-Axle Configuration (Multi-Axle Trailers) .............................................20
4S/2M Axle-By-Axle Configuration (Multi-Axle Trailers with Lift Axles) ....................21
4S/3M Full or Semi-Trailers ............................................................................................22
Stability Module Painting Requirements...........................................................................23
Stability Module Programming and Diagnostics...............................................................24
©2018 All Rights Reserved
Material may only be reproduced with the written permission of Haldex.
Section Page
Additional Information
Installation and Troubleshooting Guides
available on the Haldex website.
Anti-Lock Braking Systems (ABS)
Installation/Service Manual (L30041)
https://www.haldex.com/globalassets/
north-america/documents/abs/l30041.pdf
Brake Monitoring System (BMS-1)
Installation/Service Manual (L31250W)
https://www.haldex.com/globalassets/
north-america/documents/abs/l31250W
Intelligent Trailer Control Module (ITCM)
Installation/Service Manual (L31286W)
https://www.haldex.com/globalassets/
north-america/documents/l31286W.pdf
Brake Monitoring System (BMS)
Installation/Service Manual (L31290W)
https://www.haldex.com/globalassets/
north-america/documents/l31290W.pdf
STABILITY MODULE
INSTALLATION/SERVICE
GUIDE (L31288W)
TM
Page 1

The Stability Module is a plug-in extension for the trailer ITCM ABS ECU which provides rollover
control or other active braking applications (by combination with additional ABS software and
hardware).
The Stability Module for ITCM is plumbed in series between the Control/Signal/Blue gladhand and
the control input or Port #4 on the ABS valve. The Stability Module communicates with the ITCM
ECU over the Haldex CAN bus for rollover control or other active braking applications.
The Stability Module contains sensors to monitor the Control/Signal/Blue line air pressure, as well
as, the suspension air pressure if equipped with an air bag suspension. The trailer’s movements are
monitored by an internal accelerometer and communicated to the ITCM ECU. If a threshold value
of acceleration is reached the ITCM will command the Stability Module to apply a series of brief
test pulses of control air to the ABS valve. The test pulses are just large enough to brake a freely
spinning wheel but not a loaded wheel end. If the tested wheel end responds to the test pulse
confirming the pending rollover a large brake application is initiated to slow and stabilize the
trailer.
System Overview
Introduction
STABILITY MODULE
INSTALLATION/SERVICE
GUIDE (L31288W)
TM
Page 2

STABILITY MODULE
INSTALLATION/SERVICE
GUIDE (L31288W)
TM
ITCM 1M System Components
“See Haldex Trailer ABS Service Components Catalog (L20243) for additional information
on Haldex ABS Brake Products”
Required Items
ITCM 1M Valves with ITCM ECU (use one)
FFABS
Valve
(2-port or
4-port)
ABS Relay
Valve
(6-port)
ABS Relay
Valve
(2-port)
Trailer Brake Control
Valve (TBCV) shown or
(RT4 Valve)
Haldex CAN Diagnostic Tools
(PC Not Included)
Software
Diagnostic Interface
Cables - PC to ITCM
Info Center 2
DIAG+ PC Diagnostics Kit
Additional Recommended
Installation Aids
Tie Straps Sensor Cable
Connection Clip
Sensor Cable To
Hose Clip
Sensor Block ClipStability Module ABS Light
90° Sensor Cable
Page 3
CAN Cable