4-4 FI SYSTEM DIAGNOSIS
• When connecting meter probe from the terminal side of the
coupler (where connection from harness side not being possi-
ble), use extra care not to force and cause the male terminal
to bend or the female terminal to open.
Connect the probe as shown to avoid opening of female ter-
minal.
Never push in the probe where male terminal is supposed to
fit.
• Check the male connector for bend and female connector for
excessive opening. Also check the coupler for locking (loose-
ness), corrosion, dust, etc.
1 Coupler
2 Probe
3 Where male terminal fits
FUSE
• When a fuse blows, always investigate the cause to correct it
and then replace the fuse.
• Do not use a fuse of a different capacity.
• Do not use wire or any other substitute for the fuse.
ECM/VARIOUS SENSORS
• Since each component is a high-precision part, great care
should be taken not to apply any sharp impacts during
removal and installation.
• Be careful not to touch the electrical terminals of the ECM.
The static electricity from your body may damage this part.
INCORRECT
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