TM 9-2320-260-20
Table 2-4. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 2. Test voltage into microbrake switch.
Step 1. Disconnect lead 10 from microbrake switch.
Step 2. Turn battery switch to ON position.
Step 3. Turn ignition switch to RUN position.
Step 4. Set multimeter to a range that will measure 24 volts.
Step 5. Touch positive lead of multimeter to contact end of lead 10.
Step 6. Touch negative lead of multimeter to frame ground. Voltage should be present.
a. If voltage is present, go to step 7.
b. Repair or replace lead 10 if voltage is not present (para. 4-52 or 4-54).
Step 7. Install lead 10 in microbrake switch.
Step 8. Disconnect lead 480 at microbrake switch.
Step 9. Touch positive lead of multimeter to contact end of microbrake switch.
Step 10. Touch negative lead of multimeter to frame ground.
Step 11. Press microbrake switch. Voltage should be present.
a. If voltage is present, go to test 3.
b. Replace microbrake switch if voltage is not present (para. 4-21).
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