Mitsubishi 3000GT 1991, Service Manual

Page: 116 / 1146

FUEL SYSTEM
Troubleshootinn
Equipment side
Ha
sid
Test harness
I
Test
(MB991
EXPLANATION AND CAUTIONS ABOUT
NESS CHECK
l
The connector symbol shown is as viewed from the
terminal end of the connector inside the vehicle.
“SV” used as the standard value in voltage check stands for
system voltage.
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When checking a waterproof connector for circuit continui-
ty, be sure to use the special tool, Test Harness.
Never insert the test probe from the harness side as this
causes loss of waterproof characteristics and corrosion
may result.
There are various test harnesses and the appropriate one
for the connector being tested should be used.
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If the appropriate test harness for the particular connector is
not available, the use of the Test Harness Set (MB991348)
which can be connected directly between the terminals is
recommended.
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When checking the terminal voltage with the connector
disconnected, do not insert the test probe if the check
terminal is female.
If the test probe is forced into the terminal, poor contact
may be caused.
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When checking an open circuit of a wire with its ends
physically separated, ground one end using a jumper wire
and check the continuity between the other end and
ground. Repair the wire if there is no continuity.
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When checking short-circuit to ground of a wire, open one
end of the wire and check continuity between the other end
and ground. If there is continuity, the wire is short-circuited
to ground and requires repair.
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For checking continuity, use an analog ohmmeter (or circuit
tester) as a rule.
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