TB 9-2320-302-13&P-3
A/C TROUBLESHOOTING PROCEDURES - CONTINUED
0013 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
GENERAL TROUBLESHOOTING - CONTINUED
4. Inspect wiring harness for damage.
1. If damage is found, repair wire or
3.
Frozen Evaporator Assembly
replace wiring harness (WP 0021
Coil - Reduced Air Flow -
Continued.
2. If no damage is found, replace
power relay (WP 0021 00).
A/C ELECTRICAL SYSTEM
WARNING
Before removing any component of electrical system, be sure
battery disconnect switch is in OFF position. Remove all jewelry
before working on electrical system. Failure to follow this warn-
ing may cause injury to personnel.
1. Verify A/C fan switch is not in the OFF
1. Select the ON position.
1.
A/C System Does Not Function.
position (WP 0004 00).
2. If ON/OFF switch is in the ON
position, proceed to next step.
NOTE
A/C power is present if the dome light is lit when the dome light
is turned ON.
2. Verify power to evaporator assembly.
(a) Turn ignition key switch to the OFF
position (TM 9-2320-363-10).
(b) Disconnect red wire connector and
black wire connector to evaporator
blower assembly (WP 0017 00).
(c) Turn ignition key switch to the ON
position. (TM 9-2320-363-10).
(d) Check for 24 VDC on red wire
1. If 24 VDC is indicated, proceed to
connector to black wire connector
step 15.
(ground).
2. If 24 VDC is not indicated,
proceed to next step.
3. Verify power at power relay wiring
harness.
(a) Turn ignition key switch to the OFF
position (TM 9-2320-363-10).