TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
5.
HAND-HELD SPOTLIGHT DOES NOT OPERATE (MODEL A ONLY) (continued).
CONTINUITY TEST
CAB CONTROL BOX
(1) Open hydraulic cabinet cover.
CONNECTOR (P2)
CAUTION
Electrical power must be shut
off from circuit before conti-
nuity can be checked. Failure
to comply with this caution
may result in damage to test
equipment or electrical sys-
tem.
(2) Disconnect main junction box
connector (P4) from main junction
box.
(3) Set multimeter to ohms position.
NOTE
A reading of infinity indicates
an open circuit.
(4) Connect multimeter leads to
each end of wire, and check
multimeter for continuity. Check
for continuity on (24-pin) linking
harness, position E.
NOTE
Any reading besides infinity
indicates a grounded wire.
MAIN JUNCTION BOX
(5) Remove multimeter lead from one
CONNECTOR (P4)
end of wire and connect to
chassis ground.
4-109
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