TB 9-2320-360-13&P-1
A/C DOES NOT OPERATE
15.
KNOWN INFO
WARNING
Read WARNING on
Power to A/C system OK.
page 0042 00-21.
A/C circuit wiring OK.
A/C controls OK (except for A/C
Does system high side
binary switch and A/C
pressure vary with engine
thermostatic switch).
RPM?
A/C receiver/dryer moisture
TEST OPTIONS
indicator indicates no moisture in
Pressure Test.
system.
A/C Test Set Manifold Gage.
A/C binary switch OK.
A/C receiver/dryer sight glass
REASON FOR QUESTION
indicates no desiccant
If system high side pressure varies
breakdown or oil in system.
with RPM, A/C expansion valve
A/C system is not leaking.
is faulty. If not, A/C compressor is
A/C system charge is not low.
Replace A/C compressor,
faulty.
A/C thermostatic switch OK.
(WP 0043 00), A/C
NO
No air or other contaminant in A/C
receiver/dryer (WP 0054
system.
00), and R-134a (WP 0056
A/C receiver/dryer OK.
00). Verify repair, go to
A/C evaporator OK.
Step 23 of this fault.
A/C engine fan control circuit OK.
A/C condenser OK.
A/C system is not overcharged.
Replace A/C expansion valve
A/C hoses are not restricted.
(WP 0049 00), A/C receiver/
YES
dryer (WP 0054 00), and
POSSIBLE PROBLEMS
R-134a (WP 0056 00). Verify
A/C compressor faulty.
repair, go to Step 23 of this
A/C expansion valve faulty.
fault.
0042 00-20