TM 5-2410-240-23-1
0021
Table 1. Cab Troubleshooting Without Codes. - Continued.
0021
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. HVAC Blower Motor Does Not
18. Using digital multimeter, mea-
Voltage Less Than Specified
Function in One or More Speeds
sure for voltage (WP 0283)
Range - Proceed to step 19.
- Continued
between harness connector
Voltage Within Specified Range
C-C44 (WP 0018, Figure 33)
- Replace lower cab wiring har-
terminal 3 and cab ground.
ness (WP 0228). Ensure all har-
There should be approximately 18
ness connectors are reconnected.
to 26 volts.
Verify proper operation of machine
(TM 5-2410-240-10).
19. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
20. Disconnect harness connec-
tor C-C43 (WP 0018, Figure
32) from HVAC control panel
(WP 0217).
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 25.
between harness connector
Voltage Within Specified Range
C-C43 (WP 0018, Figure 32)
- Proceed to step 23.
terminal 1 and cab 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. Using digital multimeter, test
No Continuity - Replace lower
for continuity (WP 0283)
cab wiring harness (WP 0228).
between harness connector
Ensure all harness connectors are
C-C43 (WP 0018, Figure 32)
reconnected. Verify proper opera-
terminal 5 and harness con-
tion of machine (TM 5-2410-240-
nector C-C44 (WP 0018, Fig-
10).
ure 33) terminal 3.
Continuity - Replace HVAC con-
trol panel (WP 0217). Ensure all
harness connectors are recon-
nected. Verify proper operation of
machine (TM 5-2410-240-10).
25. Disconnect harness connec-
tor C-C40 (WP 0018, Figure
30) from FP-C5 (WP 0018,
Figure 170).
0021-11
