Advertisement
REF.22 F au It
Finding Equipment
Continuity check of front brake light
switch using a meter
-
note split pins used
to access connector terminals
2 If using a test meter, set the meter to the
ohms x 10 scale and connect its probes
across the wires from the switch (se.
illustration 9). Simple ON/OFF type switches,
such as brake
light switches, only
have two
wires whereas combination switches, like the
ignition switch, have many internal links.
Study the wiring diagram to ensure that you
are connecting across the correct pair of
wires. Continuity (low or no measurable
resistance
-
0 ohms) should be indicated with
the switch ON and no continuity
(high
resistance)
with it OFF.
3 Note
that the polarity of the test probes
doesn't matter for
continuity checks, although
care should be taken to follow specific
test
procedures
if
a
diode
or solid-state
component is being checked.
4 A continuity tester or battery and bulb
circuit can be used in the same way. Connect
its
probes
as
described
above
(see
illustration
10). The light should come on to
indicate continuity in the ON switch position,
but should extinguish in the OFF position.
Continuity check of front brake light
switch sub-harness
2 Continuity (low or no resistance
-
0 ohms)
should be indicated if the wire is good. If no
continuity
(hIgh resistance) is shown, suspect
a broken wire.
Checking
for voltage
. A voltage check can determine whether
current is reaching a component.
. Voltage can be checked with a dc
voltmeter, multimeter set on the dc volts
scale, test light or buzzer (see illustrations 12
8nd 13). A meter has the advantage of being
able to measure actual voltage.
Hide quick links:
Advertisement
