Suzuki GSX-R 1000 Service Manual: Electrical parts connector / coupler
- Faulty fi system is often related to poor electrical
contact of connector/coupler. Before servicing
individual electronic part, check electrical contact of
the 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 disconnecting, and push it in fully to engage the
lock when connecting.
- 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.

When taking measurements at electrical connectors
using a tester probe, be sure to insert the probe from
the wire harness side (rear) of the connector/coupler.

- Coupler
- Probe
- When connecting meter probe from the terminal side
of the coupler (where 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 terminal. 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 (looseness), corrosion, dust, etc.

- Coupler
- Probe
- Where male terminal fits
- Avoid applying grease or other similar material to
connector/coupler terminals to prevent electric
trouble.
When handling the electrical parts or servicing fi
system, observe the following points for the safety of the
systems. ...
Clamp the wire harness at such positions as indicated in “wiring harness
routing diagram” in section 9a .
Bend the clamp properly so that the wire harness is
clamped securely.
...
Other materials:
Turn signal / side-stand relay inspection
Refer to “electrical components location” in section 0a .
Note
make sure that the battery is fully charged.
Before removing the turn signal/side-stand relay, check
the operation of the turn signal light.
If the turn signal light does not illuminate, inspect the
bulb, turn signa ...
Excva removal and installation
Removal
Turn the ignition switch off.
Remove the left side cowling. Refer to “exterior parts removal and
installation” in section 9d .
Connect the special tool (mode select switch) to the dealer mode
coupler. Refer to “self-diagnostic procedures” in section 1a .
After tur ...
Brake fluid
Check the brake fluid level in both front and rear brake fluid reservoirs. If
the level in either reservoir is below the lower mark, inspect for brake pad
wear and leaks.
Warning
Brake fluid is harmful or fatal if
swallowed, and harmful if it
comes in contact with skin or
...