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
17. Using digital multimeter, test
Continuity - Replace A/C high-low
Cold When Maximum Cooling is
for continuity (WP 0283)
pressure switch (WP 0208).
Selected - Continued
between harness connector
Ensure all harness connectors are
EN-C23 (WP 0018, Figure
reconnected. Verify proper opera-
139) terminal 2 and harness
tion of machine (TM 5-2410-240-
connector EN-C9 (WP 0018,
10).
Figure 126) terminal 1.
No Continuity - Replace engine
wiring harness assembly (WP
0046). Ensure all harness connec-
tors are reconnected. Verify proper
operation of machine (TM 5-2410-
240-10).
18. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
19. Connect harness connector
EN-C9 (WP 0018, Figure 126)
on A/C low pressure switch
(WP 0018, Figure 143).
20. Disconnect A/C harness con-
nector terminal 519-PK (WP
0018, Figure 41) from A/C
thermostatic switch (WP 0018,
Figure 48).
21. Turn battery disconnect switch
and ignition switch to ON posi-
tion (TM 5-2410-240-10).
22. Using digital multimeter, mea-
Voltage Less Than Specified
sure for voltage (WP 0283)
Range - Proceed to step 23.
between A/C harness connec-
Voltage Within Specified Range
tor terminal 519-PK (WP 0018,
- proceed to step 30.
Figure 41) and ground.
There should be approximately 18
to 26 volts.
23. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
24. Disconnect harness connec-
tor C-C44 (WP 0018, Figure
33) from harness connector
AC-C1 (WP 0018, Figure 1).
0021-64