FI SYSTEM DIAGNOSIS 4-3
• When connecting meter probe from the terminal side of the
coupler (connection from harness side not being possible),
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 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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