Suzuki GSX-R600 Manual page 153

Step
1 6) Disconnect the ECM coupler. Refer to "ECM Removal
and Installation in Section 1C (Page 1C-1)".
7) Check the continuity between the Y/W wire and terminal
"18". Also, check the continuity between the B/Br wire
and terminal "35".
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity test (
ECM couplers (Harness side)
(B)
Is the continuity OK?
Action
)
(A)
"18"
"35"
(Black)
(Gray)
Engine General Information and Diagnosis:
Yes
Go to Step 3.
?
I837H1110063-01
1A-85
No
Y/W wire shorted to
VCC, or B/Br wire open.