Disc brake actuator behavior

[Jerryr]

Another point. after after a normal deceleration and coming to a stop at a light from normal cruise speed, the actuator pump will run and trailer brake application will be proportional to brake pedal pressure all the way to the stop. If you take your foot off the brake pedal after you come to a stop and then reapply brakes, the actuator pressure will be little to none.

[Jerryr]

From Ford: http://www.fordservicecontent.com/Fo...G1684894&div=f

The trailer brake controller is equipped with a feature that reduces output at vehicle speeds below 11 mph (18 km/h) so trailer and vehicle braking is not jerky or harsh. This feature is only available when applying the brakes using your vehicle's brake pedal, not the controller.

AND

Trailer Brake Effort Setting
The trailer brake controller allows the user to customize how aggressively the trailer brakes engage. The default value is "Low" and is the recommended setting for most trailers. If your trailer's brakes require more initial voltage, or if you prefer more aggressive trailer braking, then select either the "Medium" or the "High" setting.