TB 9-2320-302-13&P-3
A/C TROUBLESHOOTING PROCEDURES - CONTINUED
0013 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
A/C ELECTRICAL SYSTEM - CONTINUED
(c) Attempt to spin fan motor.
1. If motor is seized, replace fan
2.
A/C System Energized But
motor assembly (WP 0017 00).
Evaporator Assembly Does Not
Function - Continued.
2. If motor is not seized, proceed to
next step.
(d) Return equipment to normal
condition.
2. Verify operation of A/C fan switch.
(a) Turn ignition key switch to the ON
position (TM 9-2320-363-10).
(b) Set A/C fan switch to the ON
position (WP 0004 00).
(c) Cycle A/C fan switch through
1. Observe blower operation. If
speed settings (WP 0004 00).
blower does not operate on any
speed, go to step 9.
2. If blower does not operate on one
speed setting, troubleshoot non-
functional circuit (LOW speed
step 3, MEDIUM speed step 5,
HIGH speed step 7).
3. If blower does not operate on two
speed settings, replace resistor
speed control (WP 0017 00).
(d) Return equipment to normal
condition.
3. Verify A/C fan switch low speed setting.
(a) Turn ignition key switch to the OFF
position (TM 9-2320-363-10).
(b) Set A/C fan switch to the OFF
position (WP 0004 00).
(c) Remove A/C fan switch connector
from A/C fan switch inside
evaporator assembly (WP 0017
(d) Set A/C fan switch to LO (WP 0004
(e) Check continuity between contact
1. If continuity is not indicated,
"B" and contact "L" on A/C fan
replace selector switch (WP 0017
switch.
2. If continuity is indicated, proceed
to next step.
0013 00-7
