FI SYSTEM DIAGNOSIS 12-3
PRECAUTIONS IN SERVICING
When handling the component parts or servicing the FI system,
observe the following points for the safety of the system.
CONNECTOR/COUPLER
• Faulty FI system is often related to poor electrical contact of
connector/coupler. Before servicing individual electronic part,
check electrical contact of 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 in fully to engage the lock when con-
necting.
• 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.
• Push in the coupler straightly. An angled or skewed insertion
may cause the terminal to be deformed, possibly resulting in
poor electrical contact.
• Inspect each terminal for corrosion and contamination.
The terminals must be clean and free of any foreign material
which could impede proper terminal contact.
• Before refitting the sealed coupler, make sure its seal rubber
is positioned properly. The seal rubber may possibly come off
the position during disconnecting work and if the coupler is
refitted with the seal rubber improperly positioned, it may
result in poor water sealing.
• Inspect each lead wire circuit for poor connection by shaking it
by hand lightly. If any abnormal condition is found, repair or
replace.
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