Suzuki GSF650A Service Manual page 116

1A-41 Engine General Information and Diagnosis:
P0120-H (Use of SDS)
Step
1 1) Click the data monitor button (1).
2) Check the throttle position data.
Throttle position approx. 125
2 1) Turn the ignition switch OFF.
2) Check the TP sensor coupler for loose or poor contacts.
If OK, then check the TP sensor lead wire continuity.
Action
1
I718H1110251-01
I718H1110169-01
°
and more OK?
I717H1110013-02
Yes
Go to Step 2.
Go to Step 4.
No
Go to Step 4.
P/B wire shorted to Vcc,
or B/Br wire open.