Mitsubishi 6M60-TL Service Manual page 14

1. Handling Precautions for Electric Circuits
• When applying a voltage to a part for inspection purposes,
check that the (+) and (–) cables are connected properly then
gradually increase the voltage from zero. Do not exceed the
specified voltage.
Remember that control units and sensors do not necessarily op-
erate on the battery voltage.
CAUTION
• Do not pierce wire insulation with test probes or alligator
clips when performing electrical inspections. Piercing the
wire harness will cause corrosion.
1.1 Inspection of harnesses
(1) Inspections with connectors fitted together
(1.1) Waterproof connectors
• Connect an inspection harness and connector A between the
connectors B of the circuit to be inspected. Perform the inspec-
tion by applying a test probe C to the connectors of the inspec-
tion harness. Do not insert the test probe C into the wire-entry
sides of the waterproof connectors since this would damage
their waterproof seals and lead to rust.
(1.2) Non-waterproof connectors
• Perform the inspection by inserting a test probe C into the wire-
entry sides of the connectors. An extra-narrow probe is required
for control unit connectors, which are smaller than other types of
connector. Do not force a regular-size probe into control unit
connectors since this would cause damage.
(2) Inspections with connectors separated
(2.1) Inspections on female terminals
• Perform the inspection by carefully inserting a test probe into the
terminals. Do not force the test probe into the terminals since
this could deform them and cause poor connections.
00
00-11