Suzuki GSF650A Service Manual page 151

Step
1 1) Remove the regulator/rectifier. Refer to "Regulator /
Rectifier Inspection in Section 1J (Page 1J-8)".
2) Check the STVA lead wire coupler for loose or poor
contacts.
3) Move the air cleaner backward. Refer to "Air Cleaner
Element Removal and Installation in Section 1D
(Page 1D-7)".
4) Turn the ignition switch ON to check the STV operation.
(STVA operating order: Full open → 15% open)
Is the operating OK?
Action
I718H1110191-01
I705H1110063-01
Engine General Information and Diagnosis:
Yes
Go to Step 2.
1A-76
No
• Loose or poor
contacts on the
coupler.
• Open or short circuit
in the B/Lg, P/W, W/B
or G wire.
• If wire and
connection are OK,
go to Step 2.