TM 5-6115-332-14
P-8-614-14
TO 35C2-3-424-1
(a)
Set up and “zero” the multimeter (fig. 4-
9)
CAUTION
Failure to do the following step can
damage the multimeter.
(b) Disconnect the circuit being tested. To be
safe, disconnect the battery ground strap.
(c) Connect the meter probes to both termi-
nals of the circuit being tested. (The TS-352B/U is
illustrated (fig. 4-10), but the probes are connected
to the circuit the same way with all three multi-
meters.
(d) Look at the meter needle.
1. If the needle swings to the far right
over the “O” on the top scale (on all three multi-
meters), the circuit has continuity.
2. If the needle doesn’t move, the circuit
is open (broken).
3. If the needle jumps or flickers there
is a loose connection in the circuit being tested.
(3) Testing for Shorts. A short (or short cir-
cuit) occurs when two circuits that should not be
connected have metal to metal contact with each
other. A short also occurs when a circuit that should
not touch the ground has metal to metal contact
with ground. To check for shorts, do the following
steps:
(a) Set up and “zero” the multimeter (fig. 4-
9).
CAUTION
Failure to do the following step can
damage the multimeter.
(b) Disconnect the circuit being tested. To be
safe, disconnect the battery ground strap.
(c) Using either type of multimeter, connect
one probe to one circuit and the other probe to the
other circuit or ground (if checking for a short to
ground). The example (fig. 4-11) shows a check to
see if wire “A” is shorted to wire “B” in the wiring
harness.
Figure 4-11.
Testing for shorts.
4-24
