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GI
CAUTION
1.4W
or 3.4W
9MUGIX-019
ELECTRICAL
TROUBLESHOOTING
TOOLS
Test Light
The test light, as shown in the figure, uses a 12V bulb. The
two lead wires should
be connected
to probes.
The test light is used for simple voltage checks and for check-
ing for short circuits.
Caution
l
When
checking
the control
unit,
never
use a bulb
over
3.4W.
SMUGIX-621
VOLTMETER
BLACK
/ GR&ND
9MUGIX-021
05UGIX-021
YMUGIX-04
Jumper
Wire
The jumper
wire is used for testing by shorting
across switch
terminals
and ground
connections.
Caution
l
Do not connect
a jumper
wire from the power source
line to a body
ground;
this
may cause
burning
or
other
damage
to harnesses
or electronic
com-
ponents.
Voltmeter
The DC voltmeter
is used to measure
of circuit voltage.
A volt-
meter with a range of 15V or more is used by connecting
the
positive (-t-) probe (red lead wire) to the point where voltage
is to be measured
and the negative
(-) probe
(black
lead
wire) to a body ground.
-,'
Diagnosis
Connector
Insert the probe into the service hole when connecting
a jum-
per wire to the diagnosis
connector.
Caution
. Do not insert
the jumper
wire probe
into the diag-
nosis
connector
terminal,
which
may damage
the
terminal.
Ohmmeter
The ohmmeter
is used to measure the resistance
between two
points in a circuit and also to check for continuity
and diagno-
sis of short circuits.
Caution
l
Do not attempt
to connect
the ohmmeter
to any cir-
cuit
to which
voltage
is applied;
this
may burn
or
otherwise
damage
the ohmmeter.
GI-12
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