TM 9-2320-260-20
Table 2-4. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 7. Test wiring harness and circuit breakers.
Step 1. Position battery switch to ON position.
Step 2. Position ignition switch to RUN position.
Step 3. Set multimeter to a range that will measure 24 volts.
Step 4. Disconnect lead 10 from circuit breaker at lead 37.
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 if voltage is not present (para. 4-52 or 4-53).
Step 7. Install lead 10 into circuit breaker.
Step 8. Disconnect lead 37 from circuit breaker.
Step 9. Touch positive lead of multimeter to contact end of circuit breaker.
Step 10. Touch negative lead of multimeter to frame ground. Voltage should be present.
a. If voltage is present, go to step 11.
b. Replace circuit breaker if voltage is not present (para. 4-52 or 4-53).
Step 11. Install lead 37 into circuit breaker.
Step 12. Disconnect lead 37 from connector.
Step 13. Touch positive lead of multimeter to contact end of lead 37.
Step 14. Touch negative lead of multimeter to frame ground. Voltage should be present.
a. If voltage is present, go to step 15.
b. Repair or replace lead if voltage is not present (para. 4-52 or 4-53).
Step 15. Install lead 37 into connector.
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