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
9. Disconnect harness connec-
Function in One or More Speeds
tor C-C73 (WP 0018, Figure
- Continued
44) from high fan relay (WP
0018, Figure 49).
10. Disconnect harness connec-
tor C-C74 (WP 0018, Figure
45) from AC-C4 (WP 0018,
Figure 272).
11. Using digital multimeter, test
No Continuity - Proceed to step
for continuity (WP 0283)
10.
between harness connector
Continuity - Replace lower cab
C-C74 (WP 0018, Figure 45)
wiring harness (WP 0228). Ensure
terminal 1 and cab ground.
all harness connectors are recon-
nected. Verify proper operation of
machine (TM 5-2410-240-10).
12. Using digital multimeter, test
No Continuity - Proceed to step
for continuity (WP 0283)
13.
between harness connector
Continuity - Replace lower cab
C-C74 (WP 0018, Figure 45)
wiring harness (WP 0228). Ensure
terminal 2 and cab ground.
all harness connectors are recon-
nected. Verify proper operation of
machine (TM 5-2410-240-10).
13. Disconnect harness connec-
tor C-C40 (WP 0018, Figure
30) from FP-C5 (WP 0018,
Figure 170).
14. 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-
C-C40 (WP 0018, Figure 30)
nected. Verify proper operation of
terminal 20 and cab ground.
machine (TM 5-2410-240-10).
Continuity - Replace lower cab
wiring harness (WP 0228). Ensure
all harness connectors are recon-
nected. Verify proper operation of
machine (TM 5-2410-240-10).
Test Step 8.
1. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
2. Reset circuit breaker #4 (TM
5-2410-240-10).
0021-43