TM 5-3805-296-23-2
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Table 1. Blower Motor Does Not Operate in One or More Speeds Continued.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 37. Test Main Cab Wiring
Blower Motor Does Not
Harness for High Resistance or
Operate in One or More
Open.
Speeds Continued
1. Remove jumper wire from
terminal 4 and terminal 6 of
connector H-C3 (WP 0012,
Figure 250).
2. Connect jumper wire between
terminal 2 and terminal 11 of
connector W-C22 (WP 0012,
Figure 271).
3. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Replace fan speed switch (WP 0467).
between connector W-C2
Proceed to Test Step 38.
terminal 12 and terminal 14
Resistance Greater Than 5.0 Ohms
(WP 0012, Figure 224).
Replace main cab wiring harness
(WP 0505).
Proceed to Test Step 38.
Test Step 38. Verify Malfunction is
Resolved.
1. Ensure all harness connectors are
connected.
2. If removed, install interior cab air
filter (TM 5-3805-296-10).
3. If removed, install plate
(Figure 22, Item 1) and four bolts
(Figure 22, Item 2) on headliner
(Figure 22, Item 3).
Figure 22. Plate and Retaining Hardware.
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