TM 9-4120-404-14
3-46. WIRING HARNESSES. - Continued
a. Test. - Continued
WARNING
Whenever nature of operation permits, keep one hand away from equipment to
reduce hazard to current flowing through vital organs of body. Do Not operate
equipment without all guards, louvers, and covers in place and tightly secured.
(1) Tag and disconnect all wires connected to the wiring harness to be tested.
(2) Using a multimeter set on the lowest ohms reading, check each wire in the wiring harness for continuity.
Any wire found to be not continuous must be replaced.
(3) Using a multimeter set on the lowest ohms reading, check one of the wires in the wiring harness with all
other wires of the wiring harness for continuity. If continuity is found, replace the wire selected and the wire shown to be
continuous with the selected wire.
(4) Repeat step (3) until all wires in the wiring harness have been checked against all other wires of the wiring
harness.
b. Removal .
(1) Tag and disconnect all wires connected to the wiring harness to be tested.
(2) Remove all wire ties and clamps used to keep the wiring harness in position in the unit.
(3) Carefully remove wiring harness from unit by slowly pulling harness through grommets, brackets, and
clamps.
CAUTION
Wiring harnesses installed without required braided tubing can short out and
severely damage the unit. If a harness was removed which had a wire braid cover,
be sure the wire braid cover is assembled to the harness before the harness is
installed.
c. Repair. If any wire in a wiring harness is found to be shorted or discontinuous when conducting the tests in
step a. above, the harness must be removed, the defective wire repaired and then the wiring harness must be replaced.
For detailed procedures for electrical repair of wiring, refer to para. 3-17. For details of circuits refer to Figure 1-5,
Electrical Schematic.
3-130
