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
3. Using digital multimeter, test
No Continuity - Replace platform
Function in One or More Speeds
for continuity (WP 0283)
wiring harness (WP 0150,
- Continued
between harness connector
WP 0155). Ensure all harness
PL-C3 (WP 0018, Figure 216)
connectors are reconnected. Verify
terminal 4 and harness con-
proper operation of machine
nector PL-C15 (WP 0018, Fig-
(TM 5-2410-240-10).
ure 225) terminal 9.
Continuity - Proceed to step 4.
4. Disconnect harness connec-
tor PL-C29 (WP 0018, Figure
231) from A/C relay (WP 0018,
Figure 239).
5. Using digital multimeter, test
No Continuity - Replace platform
for continuity (WP 0283)
wiring harness (WP 0150, WP
between harness connector
0155). Ensure all harness
PL-C3 (WP 0018, Figure 216)
connectors are reconnected.
terminal 4 and harness con-
Verify proper operation of machine
nector PL-C29 (WP 0018, Fig-
(TM 5-2410-240-10).
ure 231) terminal 1.
Continuity - Proceed to step 6.
6. Using digital multimeter, test
No Continuity - Replace platform
for continuity (WP 0283)
wiring harness (WP 0150, WP
between harness connector
0155). Ensure all harness
PL-C3 (WP 0018, Figure 216)
connectors are reconnected.
terminal 4 and harness con-
Verify proper operation of machine
nector PL-C29 (WP 0018, Fig-
(TM 5-2410-240-10).
ure 231) terminal 2.
Continuity - Proceed to step 7.
7. Using digital multimeter, test
No Continuity - Proceed to step 8.
for continuity (WP 0283)
Continuity - Replace platform
between harness connector
wiring harness (WP 0150,
PL-C3 (WP 0018, Figure 216)
WP 0155). Ensure all harness
terminal 4 and cab ground.
connectors are reconnected. Verify
proper operation of machine
(TM 5-2410-240-10).
8. Using digital multimeter, mea-
Resistance Within Range -
sure resistance (WP 0283)
Proceed to step 9.
between A/C relay (WP 0018,
Resistance Not Within Range -
Figure 239) terminals 85 and
Replace relay (WP 0150, WP
86.
0155). Ensure all harness connec-
There should be between 288 and
tors are reconnected. Verify proper
396 ohms.
operation of machine (TM 5-2410-
240-10).
0021-48