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To
Ignition
S/W
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Termin.al
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Fuse
(A)
v
SIW
1
Voltmeter
@
10' > .12
1/
r -
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Relay
+
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Solenoid
S/V/2
-.;,-
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18
Ohmmeter
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S/W
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atoe:u
Digital
Type
Analog
Type
-
--
·-
VOLTAGE CHECK
(a)
Establish conditions
in which
voltage is present at the
check point.
Example:
I
-
Ignition
S/W on
-
Ignition S/W and S/W 1 on
- Ignition S/W, S/W 1
and
Relay on (S/W 2 off)
(b)
Using a
voltmeter,
connect
the
negative
lead to a
good ground point or negative battery
terminal, and
the
positive
lead to the
connector or component
terminal.
This
check
can be done with
a
test lamp
instead
of a voltmeter.
CONTINUITY AND RESISTANCE CHECK
(a)
Disconnect the battery terminal or wire so
there is
no voltage between the check points.
(b) Contact the two
leads
of an ohmmeter
to
each of
the
check points .
If
the circuit has diodes, reverse
the
two leads and check
again.
When contacting the negative
lead
to the diode positive
side
and
the positive lead to the negative side, there should
be
continuity.
When
contacting
the two
leads
in
reverse, there should be
no
continuity.
(c)
Use a
volt/ohmmeter
with
high
impedance
(10
k!l/
V minimum) for troubleshooting of
the
electrical
circuit.
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Chapters
Table of Contents
Troubleshooting
