Suzuki GSF650A Service Manual page 147

Step
1 8) Check the continuity between the B wire "B" and terminal
22. Also, check the continuity between B/Br wire "C" and
terminal 29.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity test (
ECM coupler (Harness side)
"B"
(B)
"22"
Is the continuity OK?
P1651-L (Use of SDS)
Step
1 1) Turn the ignition switch OFF.
2) Remove the seat. Refer to "Exterior Parts Removal and
Installation (GSF650/S/A/SAK7) in Section 9D
(Page 9D-6)".
3) Check the TO sensor coupler for loose or poor contacts.
If OK, then check the TO sensor lead wire continuity.
Action
)
"C"
"29"
Action
Engine General Information and Diagnosis:
Yes
Go to Step 2.
(A)
I718H1110071-02
Yes
Go to Step 2.
I717H1110021-02
1A-72
No
B wire shorted to Vcc, or
B/Br wire open.
No
R or B wire open, or B
wire shorted to the
ground.