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
Test Step 7.
Function in One or More Speeds
1. Turn ignition switch and bat-
- Continued
tery disconnect switch to OFF
position (TM 5-2410-240-10).
2. Inspect circuit breaker #31
Circuit Breaker #31 OK - Proceed
(TM 5-2410-240-10).
to step 3.
Circuit Breaker #31 Not OK -
Reset circuit breaker (TM 5-2410-
240-10). Proceed to step 8.
3. Disconnect harness connec-
tor C-C72 (WP 0018, Figure
43) from medium-high fan
relay (WP 0018, Figure 50).
4. Disconnect harness connec-
tor C-C40 (WP 0018, Figure
30) from FP-C5 (WP 0018,
Figure 170).
5. 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-C72 (WP 0018, Figure 43)
reconnected. Verify proper opera-
terminal 1 and harness con-
tion of machine (TM 5-2410-240-
nector C-C40 (WP 0018, Fig-
10).
ure 30) terminal 13.
Continuity - Proceed to step 6.
6. Remove circuit breaker #31
(TM 5-2410-240-10).
7. 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 13 and upper terminal
machine (TM 5-2410-240-10).
C8 (WP 0018, Figure 166) of
Continuity - Replace circuit
circuit breaker #31.
breaker #31 (TM 5-2410-240-10).
Ensure all harness connectors are
reconnected. Verify proper opera-
tion of machine (TM 5-2410-240-
10).
8. Disconnect harness connec-
tor C-C72 (WP 0018, Figure
43) from medium-high fan
relay (WP 0018, Figure 50).
0021-42