TM 5-6675-348-13&P
b. General Wire Test Procedures.
Use properly sized test leads and ensure care is used when checking for resistance,
continuity, or voltage at connectors, or damage to equipment may result.
(1)
Wire voltage drop test.
(a)
Disconnect connector from component (e.g., light, relay, motor, etc.) at working end of circuit.
(b)
Check connector terminal(s) for damage. Repair or replace connector as necessary.
(c)
Set up conditions that will create voltage at working end of wire.
(d)
Check for required voltage at working end of wire.
If required voltage is not measured at working end of wire, go to Step (e).
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If required voltage is measured at working end of wire, fault has not been isolated.
Continue with fault isolation tests or notify supervisor.
(e)
Disconnect first connector in line from working end of wire to power source.
(f)
Check for required voltage at working end of wire.
If required voltage is not measured at working end of wire, go to Step (g).
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If required voltage is measured at working end of wire, fault is in the section of wire that
was most recently disconnected. Repair wire and perform voltage test again.
(g)
Repeat Steps (d) and (e) until all sections of suspect wire are tested.
(2)
Wire continuity test.
(a)
Disconnect wire from component (e.g., light, relay, motor, etc.) at working end of circuit and
from power end of circuit.
(b)
Set equipment conditions that will create desired circuit.
(c)
Check continuity from power end of wire to working end of wire.
If continuity is not measured, go to Step (d).
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2
If continuity is measured, fault has not been isolated. Continue with fault isolation tests
or notify supervisor.
(d)
Disconnect first connector from working end of wire in line to power source.
(e)
Check continuity.
If continuity is not measured, go to Step (f).
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2
If continuity is measured, fault is in section of wire most recently disconnected. Repair
wire and perform continuity test again.
(f)
Repeat Steps (d) and (e) until all sections of suspect wire are tested.
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