STARTING AND OPERATING
181
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 Status
Indicator Light will not be displayed.
If a fault is detected in the trailer wiring or the Integrated
Trailer Brake Module (ITBM), the Trailer Brake Status
Indicator Light will flash.
Adjusting GAIN
NOTE:
This should only be performed in a traffic free environment
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 your trailer dealer if necessary.
2. Hook up the trailer and make the electrical
connections according to the trailer manufacturer's
instructions.
3. When a trailer is plugged in with electric or EOH
brakes, 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
control 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.
*The suggested selection may change depending on the
customer preferences for braking performance. Condition
of the trailer brakes, driving and road state may also affect
the selection.
Light Electric
Heavy Electric
Light EOH
Heavy EOH
Type of Trailer Brakes
Electric Trailer Brakes
Electric Trailer Brakes
Electric Over Hydraulic Trailer
Brakes
Electric Over Hydraulic Trailer
Brakes
Load
*Under 10,000 lb
*Above 10,000 lb
*Under 10,000 lb
*Above 10,000 lb
4
23_DT_OM_EN_USC_t.book Page 181