Patent ID: 9321440
Filing Date: 2016-04-26
CPC Classification: B60T

Claim Text:
1. A method of controlling a trailer brake system of a trailer using a trailer brake controller of a tow vehicle to which the trailer is attached, comprising: determining that the tow vehicle is in a zero-velocity state for a first prescribed duration of time associated with the zero-velocity state; waiting for a delay time duration to elapse; determining that a brake system of the tow vehicle is in a brake torque providing state for a second prescribed duration of time after at least a portion of the delay time duration has elapsed and while the tow vehicle is in the zero-velocity state, the second prescribed duration of time is associated with the brake torque providing state and is distinct from the first prescribed duration of time associated with the zero-velocity state; and causing a brake-actuating output signal of the trailer brake controller to transition from a speed-dependent zero-velocity output signal value to a trailer hold zero-velocity output signal value greater than the speed-dependent zero-velocity output signal value, wherein causing the brake-actuating output signal transition is performed in response to determining that the brake system is in the brake torque providing state for the second prescribed duration of time while the tow vehicle is in the zero-velocity state for the first prescribed duration of time.