Inspect air lines 2224, 2225, 2226, 2231,
2232 and fittings for crimps or blockage.
(1) If air hose(s) and fitting(s) are
crimped or blocked, clean, repair
or replace air hose(s) or fitting(s)
(see schematic Fig FO-2 or Para
(2) If air lines and fittings are OK
go to Step 2 of this fault.