Patent ID: 11873751
Assignee: CATERPILLAR INC.
Field: Environmental technology (Chemistry)
Classification: CPC F  Y | IPC F

Claim 5:
6. The first system of claim 5, wherein the open state is a first open state and the closed state is a first closed state, the controller is communicatively coupled to the air source, and the instructions further cause the controller to:
prior to causing the return valve to transition to the first open state, cause an air valve to transition to a second open state permitting air to flow from the air source to the injector along the air flow line;
determine, from the pressure data, a fourth fluid pressure at the first location; determine that the fourth fluid pressure is outside of a predetermined pressure range;
generate a diagnostic code indicating that at least a portion of the first system is function improperly based at least in part on determining that the fourth fluid pressure is outside of the predetermined pressure range; and
store the diagnostic code in the memory of the controller.