TM 9-2320-260-20
Table 2-4. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 4. Test personnel heater for power input.
Step 1. Ensure heater switch is in HIGH position.
Step 2. Set multimeter to a range that will measure 24 volts.
Step 3. Disconnect lead 400 from personnel heater.
Step 4. Touch positive lead of multimeter to contact end of lead 400.
Step 5. Touch negative lead of multimeter to frame ground. Voltage should be present.
a. Repair or replace lead 400 if voltage is not present (para. 4-52).
b. Replace personnel heater if voltage is present and personnel heater fails to operate
Test 5. Test blower motor resistor.
Step 1. Set multimeter to RX1 scale.
Step 2. Ensure heater switch is set to LOW position.
Step 3. Touch positive lead of multimeter to one lead on resistor.
Step 4. Touch negative lead of multimeter to the other lead on resistor.
Multimeter should measure between 4.5 and 5.5 ohms.
Redate resistor if resistance is not within tolerance of 4.5 and 5.5 ohms
END OF TESTING!
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