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
21. 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-C23 (WP 0018, Figure
connectors are reconnected.
139) terminal 2 and EN-C9
Verify proper operation of machine
(WP 0018, Figure 126) termi-
(TM 5-2410-240-10).
nal 1.
Continuity - Proceed to step 22.
22. Using digital multimeter, test
No Continuity - Proceed to
for continuity (WP 0283)
step 23.
between A/C low pressure
Continuity - Replace A/C Low
switch connector EN-C9 (WP
pressure switch and jumper
0018, Figure 143) terminal 1
harness (WP 0250). Ensure all
and engine ground.
harness connectors are
reconnected. Verify proper
operation of machine (TM 5-2410-
240-10).
23. Using digital multimeter, test
No Continuity - Proceed to
for continuity (WP 0283)
step 24.
between A/C low pressure
Continuity - Replace A/C Low
switch connector EN-C9 (WP
pressure switch and jumper
0018, Figure 143) terminal 2
harness (WP 0250). Ensure all
and engine ground.
harness connectors are
reconnected. Verify proper
operation of machine (TM 5-2410-
240-10).
24. Using digital multimeter, test
No Continuity - Replace engine
for continuity (WP 0283)
wiring harness assembly (WP
between harness connector
0046). Ensure all harness
EN-C9 (WP 0018, Figure 126)
connectors are reconnected.
terminal 2 and harness con-
Verify proper operation of machine
nector EN-C15 (WP 0018, Fig-
(TM 5-2410-240-10).
ure 132) terminal 26.
Continuity - Proceed to step 25.
25. Using digital multimeter, test
No Continuity - Proceed to
for continuity (WP 0283)
step 26.
between harness connector
Continuity - Replace engine
EN-C9 (WP 0018, Figure 126)
wiring harness assembly (WP
terminal 2 and engine ground.
0046). Ensure all harness
connectors are reconnected.
Verify proper operation of machine
(TM 5-2410-240-10).
26. Disconnect harness connec-
tor EN-C10 (WP 0018, Figure
127) from A/C Clutch (WP
0092).
0021-46