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Integrated Trailer Brake Module
(ITBM) — If Equipped
Your vehicle may have an ITBM for electric and Electric
Over Hydraulic (EOH) trailer brakes.
NOTE:
This module has been designed and verified with elec-
tric trailer brakes and EOH systems. Some previous
EOH systems may not be compatible with ITBM.
The user interface consists of the following:
Manual Brake Control Lever
Slide the manual brake control lever to the left to acti-
vate power to the trailer's electric brakes independent
of the tow vehicle's brakes. If the manual brake control
lever is activated while the brake is also applied, the
greater of the two inputs determines the power sent to
the trailer brakes.
The trailer and the vehicle's brake lamps will come on
when either vehicle braking or manual trailer brakes
are applied.
Trailer Brake Status Indicator Light
This light indicates the trailer electrical connection
status.
If no electrical connection is detected after the ignition
is turned on, pushing the GAIN adjustment button or
sliding the manual brake control lever will display the
GAIN setting for 10 seconds and the Trailer Brake Sta-
tus Indicator Light will not be displayed.
If a fault is detected in the trailer wiring or the Inte-
grated Trailer Brake Module (ITBM), the Trailer Brake
Status Indicator Light will flash.
GAIN Adjustment Buttons (+/-)
Pushing these buttons will adjust the brake control
power output to the trailer brakes in 0.5 increments.
The GAIN setting can be increased to a maximum of
10 or decreased to a minimum of 0 (no trailer braking).
GAIN
The GAIN setting is used to set the trailer brake control
for the specific towing condition and should be changed
as towing conditions change. Changes to towing condi-
tions include trailer load, vehicle load, road conditions
and weather.
Adjusting GAIN
NOTE:
This should only be performed in a traffic free environ-
ment at speeds of approximately 20–25 mph
(30–40 km/h).
1. Make sure the trailer brakes are in good working
condition, functioning normally and properly
adjusted. See a trailer dealer if necessary.
2. Hook up the trailer and make the electrical connec-
tions according to the trailer manufacturer's
instructions.
3. When a trailer with electric/EOH brakes is plugged
in, the trailer connected message should appear in
the instrument cluster display (if the connection is
not recognized by the ITBM, braking functions will
not be available), the GAIN setting will illuminate
and the correct type of trailer must be selected from
the instrument cluster display options.
4. Push the UP or DOWN button on the steering wheel
until “TRAILER TOW” appears on the screen.
5. Push the RIGHT arrow on the steering wheel to enter
“TRAILER TOW”.
6. Push the UP or DOWN buttons until the Trailer Brake
Type appears on the screen.
7. Push the RIGHT arrow and then push the UP or
DOWN buttons until the proper Trailer Brake Type
appears on the screen.
8. In a traffic-free environment, tow the trailer on a dry,
level surface at a speed of 20–25 mph
(30–40 km/h) and squeeze the manual brake con-
trol lever completely.
9. If the trailer wheels lockup (indicated by squealing
tires), reduce the GAIN setting; if the trailer wheels
turn freely, increase the GAIN setting.
Repeat steps 8 and 9 until the GAIN setting is at a point
just below trailer wheel lockup. If towing a heavier
trailer, trailer wheel lockup may not be attainable even
with the maximum GAIN setting of 10.
Integrated Trailer Brake Module (ITBM)
1 — GAIN Adjustment Button
2 — GAIN Adjustment Button
3 — Manual Brake Control Lever
STARTING AND OPERATING 127
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