TM 5-3805-298-23-1
0119
Table 1. Blower Motor Does Not Operate in One or More Speeds - Continued.
0119
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 4. Test Blowers Circuit
Blower Motor Does Not
Breaker
Operate in One or More
1. Turn ignition switch and battery
Speeds - Continued
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Inspect blowers circuit breaker in
Blower Circuit Breaker Not Tripped
fuse box (TM 5-3805-298-10).
Proceed to Test Step 6.
Blower Circuit Breaker Tripped
Proceed to Test Step 5.
Test Step 5. Test for Shorted Lower
Cab Wiring Harness.
1. Disconnect connector C-C25
(WP 0012, Figure 115) from
connector A-C2 (WP 0012,
Figure 114)
2. Remove blowers circuit breaker
(TM 5-3805-298-10).
3. Using digital multimeter
Continuity Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between terminal D2 (WP 0012,
Reset blowers circuit breaker
Figure 47) and ground.
(TM 5-3805-298-10).
Proceed to Test Step 18.
No Continuity Reset blowers circuit
breaker (TM 5-3805-298-10).
Proceed to Test Step 13
Test Step 6. Test for Open Lower Cab
Wiring Harness.
1. Disconnect connector C-C25
(WP 0012, Figure 115) from
connector A-C2 (WP 0012,
Figure 114).
2. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0174), measure resistance
Proceed to Test Step 7.
between connector C-C25
Resistance Greater Than 5.0 Ohms
(WP 0012, Figure 115) terminal 2
Replace lower cab wiring harness
and ground.
(WP 0291).
Proceed to Test Step 18.
Test Step 7. Test for Open Lower Cab
Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to ON position
(TM 5-3805-298-10).
2. Turn blower switch to position III
(TM 5-3805-298-10).
0119-3