Suzuki GSF1250 Service Manual page 173

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 W/G wire "A" and
terminal "12". Also, check the continuity between the B/
Br wire "B" and terminal "29".
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity (
"B"
(B)
"12"
Is the continuity OK?
Action
)
"29"
Engine General Information and Diagnosis:
Yes
Go to Step 2.
(A)
I718H1110229-02
1A-104
No
W/G wire shorted to the
power source, or W/G
or B/Br wire open.