4-2 FI SYSTEM DIAGNOSIS
PRECAUTIONS IN SERVICING
When handling the component parts or servicing the FI system,
observe the following points for the safety of the system.
ELECTRICAL PARTS
CONNECTOR/COUPLER
• When connecting a connector, be sure to push it in until a
click is felt.
• With a lock type coupler, be sure to release the lock when dis-
connecting, and push it in fully till the works when connecting
it.
• When disconnecting the coupler, be sure to hold the coupler
body and do not pull the lead wires.
• Inspect each terminal on the connector/coupler for looseness
or bending.
• Inspect each terminal for corrosion and contamination.
The terminals must be clean and free of any foreign material
which could impede proper terminal contact.
• Inspect each lead wire circuit for poor connection by shaking it
by hand lightly. If any abnormal condition is found, repair or
replace.
When taking measurements at electrical connectors using a
tester probe, be sure to insert the probe from the wire harness
side (backside) of the connector/coupler.

1 Coupler

2 Probe
Click
Click
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