Patent ID: 11919355
Assignee: DRIV AUTOMOTIVE INC.
Field: Transport (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 11:
12. A valve diagnostic method for a suspension system of a vehicle, the valve diagnostic method comprising:
selectively setting a present state of a valve diagnostic for valves of the suspension system to a first state in a predetermined order of states;
determining first target open and closed states for the valves of the suspension system based on the present state being set to the first state;
opening and closing the valves of the suspension system according to the first target open and closed states, respectively;
when the valves are in the first target open and closed states, respectively, selectively operating an electric pump of the suspension system in a first direction and pump hydraulic fluid toward the suspension system;
recording first values of pressures within the suspension system measured using pressure sensors, respectively, before the operation of the electric pump in the first direction;
recording second values of the pressures within the suspension system measured using the pressure sensors, respectively, after a beginning of the operation of the electric pump; and
selectively diagnosing faults in a first subset of the valves based on whether pressure increases occurred in (b) the second values of the pressures relative to (a) the first values of the pressures, respectively.