TM 5-2420-231-23-1
0031
Table 1. Heating, Ventilation, and A/C (HVAC) Blower Motor Does Not
Operate at One or More Speeds.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 1. Verify HVAC Blower
HVAC Blower Motor Does
Motor Operation.
Not Operate at One or More
Speeds
1. Turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
2. Turn blower fan switch (Figure 2,
HVAC Blower Motor Does Not
Item 1) to each speed setting (TM
Operate at One or More Speeds -
5-2420-231-10). Monitor and
Proceed to Test Step 2.
record HVAC blower motor opera-
HVAC Blower Motor Does Not
tion.
Operate at Any Speed - Proceed to
step 3.
3. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
4. Remove blower fuse (Figure 1,
Item 1) (TM 5-2420-231-10).
Figure 1. Fuse Panel.
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