Suzuki GSX-R1000 Service Manual page 217

Step 6
1) Turn the ignition switch OFF.
2) Disconnect the motor lead wire coupler of the EXCVA.
3) Apply 12 volts to the terminal and check the operation of
EXCVA.
4) Then, swap the wires supplied 12 volts and check the
operation of EXCVA.
(Check the operation of EXCVA both way)
Is the operation OK?
FI SYSTEM DIAGNOSIS
4·59
YES
NO
Loose or poor contacts on the EXCVA or ECM
coupler.
Replace the EXCVA with a new one.