TM 5-2410-241-23-1
0022
Table 1. Cab Troubleshooting Procedures - Continued.
0022
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
The A/C Compressor will
34. Turn battery disconnect switch
Not Engage - Continued
and ignition switch to ON position
(TM 5-2410-241-10).
35. Using digital multimeter (WP
1. If 24 Volts is found, replace A/C
0296), measure for voltage
switch. Ensure all harness con-
between pin 3 on instrument
nectors are reconnected. Verify
panel harness connector E-C21
correct operation of machine (TM
(WP 0018, Figure 170) and
5-2410-241-10).
ground.
2. If voltage is NOT found, proceed
to step 36.
36. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-2410-241-10).
37. Disconnect instrument panel har-
ness connector E-C2 (WP 0018,
Figure 171) from blower motor
speed switch.
38. Using digital multimeter (WP
1. If continuity is found, proceed to
0296), test for continuity between
step 39.
pin 2 on instrument panel harness
2. If continuity is NOT found, replace
A/C switch connector E-C21 (WP
instrument panel harness
0018, Figure 170) and pin 2 on
(WP 0260). Ensure all harness
instrument panel harness blower
connectors are reconnected. Ver-
motor speed switch connector E-
ify correct operation of machine
C2 (WP 0018, Figure 171).
(TM 5-2410-241-10).
39. Turn battery disconnect switch
and ignition switch to ON position
(TM 5-2410-241-10).
40. Using digital multimeter (WP
1. If 24 Volts is found, replace
0296), measure for voltage
blower motor switch. Ensure all
between pin 1 on instrument
harness connectors are recon-
panel harness blower motor
nected. Verify correct operation of
speed switch connector E-C2
machine (TM 5-2410-241-10).
(WP 0018, Figure 171) and
2. If voltage is NOT found, proceed
ground.
to step 41.
41. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-2410-241-10).
42. Disconnect platform harness con-
nector MA-C3 (WP 0018, Figure
21) from fuse panel wiring har-
ness connector A-C1 (WP 0018,
Figure 22).
0022-119
