Patent ID: 7040715

Claim:
A method for performing a brake load weigh function on a truck of a rail vehicle, comprising the steps of: a) reading a network data packet from a sensor input means; b) determining a braking requirement; c) determining if said braking requirement is an emergency brake condition; d) generating at least one of a yes signal and a no signal indicative of said emergency brake condition; e) communicating said no signal to at least one of a service brake and brake release means, and said yes signal to a means to determine an energization pattern; and f) determining an energization pattern from said means to determine energization pattern, wherein step (f) includes the steps of: a) performing a first lookup, and generating at least one of a first yes signal and a first no signal in response to said first lookup function; b) verifying a present state of a predetermined plurality of air spring pressure switches; c) communicating at least one of said first yes signal to a first plurality of brake cylinder control pressure verification means, and said first no signal to a means to determine a pressure switch fault; d) verifying a first plurality of predetermined pressures; and e) energizing an application valve when said predetermined pressure is verified.