TM 10-3930-675-20-1
0006 00-13
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0006 00
Table 2. Electrical Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
18. 12-V Utility Plug Not Working - Continued.
4. Inspect 12-V utility plug
wiring
harnesses
and
connectors
for
damage,
continuity, and proper voltage
(12V) (WP 0199 00-40).
Repair or replace damaged wires
or connectors (WP 0111 00).
CAB HEATER/DEFROSTER, AIR
CIRCULATION, AND AC SYSTEM
19. Blower Motor Not Working.
1. Ensure that blower motor
circuit breaker number 11 is
not tripped.
Reset circuit breaker as required
(WP 0073 00).
2. Check heater blower control
switch
for
damage
and
continuity.
Replace damaged switch (WP
0072 00).
3. Check air circulation blower
control switch for damage and
continuity.
Replace damaged switch (WP
0072 00).
4. Disconnect
blower
motor
wiring harness, located behind
instrument panel lower panel,
and check for proper voltage.
Voltage should be 24V.
If voltage is not as specified,
replace blower motor (WP 0159
00)
20. Heater/Defroster Producing Low or No Heat.
1. Ensure that engine is up to
operating temperature.
Refer to TM 10-3930-675-10.
2. Check
coolant
level
in
recovery tank (TM 10-3930-
675-10).
Add coolant as required (TM 10-
3930-675-10).
3. Check heater/defroster tem-
perature control switch for
damage and continuity.
Replace damaged switch (WP
0072 00).
21. AC System Producing Low or No Cool Air.
1. Ensure that AC condenser
circuit breaker number 1 is not
tripped.
Reset circuit breaker as required
(WP 0073 00).
2. Remove engine cover and
inspect AC compressor drive
belts for damage.
a. Replace and/or adjust belts as
required (WP 0189 00).
b. Notify DS Maintenance to
service AC system.
3. Check AC temperature control
switch
for
damage
and
continuity.
Replace damaged switch (WP
0072 00).
