125 ± 5 psi (862 ± 34 kPa) must be
supplied to trailer air system before
troubleshooting can begin.
Air lines and valves listed in this
troubleshooting procedure are illustrated
and located in FO-2.
Inspect air lines 2078 and 2081 and
fittings for crimps.
(1) If hose(s) and fitting(s) are
crimped, replace or repair hose(s)
and fitting(s) (see schematic Fig
(2) If lines and fittings are OK, go to
Step 2 of this Fault.