TM 5-3805-296-23-2
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Table 1. Defrost Fan Fails To Operate Continued.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Defrost Fan Fails To Operate
2. Remove fuse F31 from circuit
Continued
breaker panel
(TM 5-3805-296-10).
3. Using digital multimeter
Continuity Proceed to Test Step 4.
(WP 0540), measure resistance
No Continuity Proceed to Test
between terminals of fuse F31.
Step 7.
Test Step 4. Test Main Relay Supply
Voltage at Circuit Breaker Panel.
1. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
2. Using digital multimeter
Voltage 18 to 26 V Proceed to Test
(WP 0540), test for voltage
Step 5.
between fuse F31 right terminal
Voltage Less Than 18 V Replace
(Figure 1) and ground.
fuse panel wiring harness (WP 0515).
Proceed to Test Step 10.
Figure 1. Testing Voltage to Fuse.
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