STARTING AND OPERATING 177 CAUTION! Trailer Brake Status Indicator Light If the trailer weighs more than 1,000 lb (453 kg) loaded, it should have its own brakes and they should be of adequate capacity. Failure to do this could lead to accelerated brake lining wear, higher brake pedal effort, and longer stopping distances. 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.
Integrated Trailer Brake Module (ITBM) — If Equipped Integrated Trailer Brake Module (ITBM) If a fault is detected in the trailer wiring or the ITBM, the Trailer Brake Status Indicator Light will flash. 4 Your vehicle may have an ITBM for Electric and Electric Over Hydraulic (EOH) trailer brakes. 1 — GAIN - Adjustment Button 2 — GAIN + Adjustment Button 3 — Manual Brake Control Lever GAIN Adjustment Buttons (+/-) NOTE: This module has been designed and verified with electric trailer brakes and new electric over hydraulic systems. Some previous EOH systems may not be compatible with ITBM. Pushing these buttons will adjust the brake control power output to the trailer brakes in 0.5increments.
The GAIN setting can be increased to a maximum of 10 or decreased to a minimum of 0 (no trailer braking). The user interface consists of the following: Slide the manual brake control lever to the left to activate 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. Manual Brake Control Lever 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 conditions include trailer load, vehicle load, road conditions and weather. The trailer and the vehicle’s stop lamps will come on when braking normally with the vehicle brake pedal. Only the trailer stop lamps will come on when the manual brake control lever is applied.