TM 5-2410-240-23-1
0021
Table 1. Cab Troubleshooting Without Codes. - Continued.
0021
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Air Conditioning Does Not Blow
32. Using digital multimeter, test
Continuity - Proceed to step 33.
Cold When Maximum Cooling is
for continuity (WP 0283)
No Continuity - Replace A/C ther-
Selected - Continued
between terminals on A/C
mostatic switch (WP 0207).
thermostatic switch (WP 0018,
Ensure all harness connectors are
Figure 48).
reconnected. Verify proper opera-
tion of machine (TM 5-2410-240-
10).
33. Connect A/C harness connec-
tor terminal C509-WH
(WP 0018, Figure 41) on A/C
thermostatic switch (WP 0018,
Figure 48).
34. Connect A/C harness connec-
tor terminal 519-PK (WP 0018,
Figure 41) on A/C thermostatic
switch (WP 0018, Figure 48).
35. Disconnect harness connec-
tor to PL-C4 (WP 0018, Figure
217) from machine ECM J1.
36. Turn battery disconnect switch
and ignition switch to ON posi-
tion (TM 5-2410-240-10).
Voltage Less Than Specified -
37. Using digital multimeter, mea-
sure for voltage (WP 0283)
Proceed to step 38.
between harness connector
Voltage Within Specified Range
PL-C4 (WP 0018, Figure 217)
- Machine ECM faulty; replace
terminal 14 and ground.
machine ECM (WP 0147, WP
There should be approximately 18
0149). Ensure all harness connec-
to 26 volts.
tors are reconnected. Verify proper
operation of machine (TM 5-2410-
240-10).
38. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
39. Disconnect A/C harness con-
nector terminal C509-WH
(WP 0018, Figure 41) from
A/C thermostatic switch (WP
0018, Figure 48).
40. Disconnect harness connec-
tor C-C44 (WP 0018, Figure
33) from harness connector
AC-C1 (WP 0018, Figure 1).
0021-66
