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
27. Using digital multimeter, test
No Continuity - Replace engine
Function in One or More Speeds
for continuity (WP 0283)
wiring harness assembly (WP
- Continued
between harness connector
0046). Ensure all harness
EN-C10 (WP 0018, Figure
connectors are reconnected.
127) terminal 1 and harness
Verify proper operation of machine
connector EN-C15 (WP 0018,
(TM 5-2410-240-10).
Figure 132) terminal 10.
Continuity - Proceed to step 28.
28. Using digital multimeter, test
No Continuity - Proceed to
for continuity (WP 0283)
step 29.
between harness connector
Continuity - Replace engine
EN-C10 (WP 0018, Figure
wiring harness assembly (WP
127) terminal 1 and engine
0046). Ensure all harness
ground.
connectors are reconnected.
Verify proper operation of machine
(TM 5-2410-240-10).
29. Using digital multimeter, test
No Continuity - Proceed to
for continuity (WP 0283)
step 30.
between A/C compressor
Continuity - Replace A/C com-
clutch connector (WP 0018,
pressor (WP 0092). Ensure all har-
Figure 273) terminals 1 engine
ness connectors are reconnected.
ground.
Verify proper operation of machine
(TM 5-2410-240-10).
30. Using digital multimeter, mea-
Resistance Within Range -
sure resistance (WP 0283)
Ensure all harness connectors are
between A/C compressor
reconnected. Repeat troubleshoot-
clutch connector (WP 0018,
ing from the beginning.
Figure 273) terminals 1 and 2.
Resistance Not Within Range -
There should be between 17 and
Replace A/C compressor
18.2 ohms.
(WP 0092). Ensure all harness
connectors are reconnected. Verify
proper operation of machine (TM
5-2410-240-10).
Test Step 9.
1. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
2. Disconnect harness connec-
tor FP-C3 (WP 0018, Figure
168) from harness connector
PL-C3 (WP 0018, Figure 216).
0021-47