TB 9-2320-360-13&P-1
A/C DOES NOT OPERATE
3.
KNOWN INFO
WARNING
Read WARNING on
Power to A/C system OK.
page 0042 00-7.
A/C circuit wiring OK.
A/C controls OK (except for A/C
Does A/C receiver/dryer sight
binary switch and A/C
glass indicate system is free
thermostatic switch).
from desiccant breakdown
A/C receiver/dryer moisture
TEST OPTIONS
indicator indicates no moisture in
and oil?
Visual Inspection.
system.
A/C binary switch OK.
REASON FOR QUESTION
POSSIBLE PROBLEMS
If A/C receiver/dryer sight glass
indicates desiccant breakdown or
A/C receiver/dryer sight glass
oil in system, system must be
indicates desiccant breakdown or
flushed.
oil in system.
Perform leak test
A/C system charge low.
(WP 0038 00), repair any
A/C compressor faulty.
leaks found, recover R-
NO
Restricted A/C hose.
134a (WP 0056 00), flush
A/C thermostatic switch faulty.
system (WP 0056 00), and
Air or other contaminant in A/C
replace A/C receiver/dryer
YES
system.
(WP 0054 00) and R-134a
A/C engine fan control circuit
(WP 0056 00). Go to
faulty.
Step 4 of this fault.
A/C condenser faulty.
A/C expansion valve faulty.
A/C system overcharged.
A/C system leaking.
A/C receiver/dryer faulty.
A/C evaporator faulty.
0042 00-6
