TM 5-2410-240-23-1
0021
Table 1. Cab Troubleshooting Without Codes. - Continued.
0021
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Little or No Warm Air Flow When
4. Inspect fuse #9 (TM 5-2410-
Fuse Good - Proceed to Test
Heater Control Knob is Set for
240-10).
Step 8.
Maximum Heating Continued
Fuse Bad - Replace fuse #9
(TM 5-2410-240-10). Proceed to
Test Step 8.
Test Step 8.
1. Disconnect harness connec-
tor AC-C1 (WP 0018, Figure
3) from harness connector C-
C44 (WP 0018, Figure 33).
2. Using digital multimeter, test
No Continuity - Replace A/C
for continuity (WP 0283)
blower harness (WP 0245).
between harness connector
Ensure all harness connectors are
AC-C3 (WP 0018, Figure 3)
reconnected. Verify proper opera-
terminal 1 and harness con-
tion of machine (TM 5-2410-240-
nector AC-C1 (WP 0018, Fig-
10).
ure 1) terminal 7.
Continuity - Proceed to step 3.
3. Using digital multimeter, test
No Continuity - Replace A/C
for continuity (WP 0283)
blower harness (WP 0245).
between harness connector
Ensure all harness connectors are
AC-C3 (WP 0018, Figure 3)
reconnected. Verify proper opera-
terminal 4 and harness con-
tion of machine (TM 5-2410-240-
nector AC-C1 (WP 0018, Fig-
10).
ure 1) terminal 8.
Continuity - Proceed to step 4.
4. Using digital multimeter, test
No Continuity - Replace A/C
for continuity (WP 0283)
blower harness (WP 0245).
between harness connector
Ensure all harness connectors are
AC-C3 (WP 0018, Figure 3)
reconnected. Verify proper opera-
terminal 2 and harness con-
tion of machine (TM 5-2410-240-
nector AC-C1 (WP 0018, Fig-
10).
ure 1) terminal 9.
Continuity - Proceed to step 5.
5. Using digital multimeter, test
No Continuity - Proceed to step 6.
for continuity (WP 0283)
Continuity - Replace A/C blower
between harness connector
harness (WP 0245). Ensure all
AC-C1 (WP 0018, Figure 1)
harness connectors are recon-
terminal 9 and all other termi-
nected. Verify proper operation of
nals in harness connector AC-
machine (TM 5-2410-240-10).
C1 (WP 0018, Figure 1).
0021-5
