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
26. Using digital multimeter, test
No Continuity - Replace lower
Function in One or More Speeds
for continuity (WP 0283)
cab wiring harness (WP 0228).
- Continued
between harness connector
Ensure all harness connectors are
C-C40 (WP 0018, Figure 30)
reconnected. Verify proper opera-
terminal 10 and harness con-
tion of machine (TM 5-2410-240-
nector C-C43 (WP 0018, Fig-
10).
ure 32) terminal 1.
Continuity - Proceed to step 27.
27. Using digital multimeter, test
No Continuity - Proceed to
for continuity (WP 0283)
step 28.
between harness connector
Continuity - Replace lower cab
C-C43 (WP 0018, Figure 32)
wiring harness (WP 0228). Ensure
terminal 1 and terminal 9.
all harness connectors are recon-
nected. Verify proper operation of
machine (TM 5-2410-240-10).
28. Remove circuit breaker #4
(TM 5-2410-240-10).
29. Using digital multimeter, test
No Continuity - Replace fuse
for continuity (WP 0283)
panel harness (WP 0201). Ensure
between harness connector
all harness connectors are recon-
FP-C5 (WP 0018, Figure 170)
nected. Verify proper operation of
terminal 10 and upper terminal
machine (TM 5-2410-240-10).
D2 (WP 0018, Figure 167) of
Continuity - Replace circuit
circuit breaker #4.
breaker #4 (TM 5-2410-240-10).
Ensure all harness connectors are
reconnected. Verify proper opera-
tion of machine (TM 5-2410-240-
10).
Test Step 3.
1. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
2. Disconnect harness connec-
tor C-C44 (WP 0018, Figure
33) from AC-C1 (WP 0018,
Figure 1).
3. Disconnect harness connec-
tor C-C74 (WP 0018, Figure
45) from AC-C4 (WP 0018,
Figure 272).
4. Turn battery disconnect switch
and ignition switch to ON posi-
tion (TM 5-2410-240-10).
5. Turn blower fan switch to low
fan speed (TM 5-2410-240-
10).
0021-12
