TM 5-3805-296-23-2
0134
Table 1. Blower Motor Does Not Operate in One or More Speeds Continued.
0134
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Blower Motor Does Not
2. Connect jumper wire between
Operate in One or More
terminal 1 and terminal 6 of
Speeds Continued
connector H-C3 (WP 0012,
Figure 250).
3. Disconnect connector W-C2
(WP 0012, Figure 224) from
connector H-C7 (WP 0012,
Figure 225).
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to Test Step 8.
between connector H-C7
Resistance Greater Than 5.0 Ohms
terminal 12 and terminal 16
Replace headliner wiring harness
(WP 0012, Figure 225).
(WP 0497).
Proceed to Test Step 38.
Test Step 8. Test Main Cab Wiring
Harness for High Resistance or
Open.
1. Remove jumper wire from
terminal 1 and terminal 6 of
connector H-C3 (WP 0012,
Figure 250).
2. Connect jumper wire between
terminal 2 and terminal 9 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 21
Resistance Greater Than 5.0 Ohms
(WP 0012, Figure 224).
Replace main cab wiring harness
(WP 0505).
Proceed to Test Step 38.
Test Step 9. Test Headliner Wiring
Harness for High Resistance or
Open.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Connect jumper wire between
terminal 1 and terminal 6 of
connector H-C3 (WP 0012,
Figure 250).
3. Disconnect connector W-C2
(WP 0012, Figure 224) from
connector H-C7 (WP 0012,
Figure 225).
0134-5