TM 10-3930-675-24-1
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0007 00
Table 2. Electrical Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
20.A/C System Not Cooling Properly - Continued.
c. Replace damaged or faulty
switch (WP 0073 00).
6. Check voltage (24V) at X17 a. If no voltage (24V) is found at
X17 pin 8, check continuity of
pin 8 while operating the A/C
wires A327, 327, 328, and
system to maximum cool.
A178 (WP 0048 00-39).
b. If no voltage (24V) is found at
X17 pin 8 and all wires are
functioning properly, remove
the cover of the condenser and
unplug the pressure switch.
Check continuity of the
pressure switch between wires
RD/WH and BK/WH (X810
pins 3 and 4).
c. If no continuity is found at
pressure switch, perform A/C
system maintenance (WP
0265 00) to check the
refrigerant charge of the
system.
7. Check the wire connector at a. If no voltage (24V) is found,
the compressor clutch. Unplug
check continuity of wire 178
the connector and check
(WP 0048 00-39).
voltage (24V) while operating b. If voltage (24V) is found,
the A/C system to maximum
check the resistance of the
cool.
compressor clutch to ground.
Resistance should be 12 to 16
Ohms.
c. If resistance of compressor
clutch is not as specified,
replace compressor (WP 0266
00).
8. Check circuit breaker F1 for a. Reset circuit breaker as
trip. Unplug X810 and check
required.
voltage (24V) at X810 pins 1 b. If no voltage (24V) is found at
and 2 while operating the A/C
X810 pin 2, check continuity
system.
of wires A95A and 322 (WP
0048 00-39).
0007 00-51
