Suzuki GSF1250 Service Manual page 110

1A-41 Engine General Information and Diagnosis:
P0120-L (Use of SDS)
Step
1 1) Click the data monitor button (1).
2) Check the throttle position data.
Throttle position approx. 0
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.
3) Disconnect the TP sensor coupler.
4) Insert the needle pointed probes to the lead wire coupler.
Action
1
I718H1110251-01
I718H1110172-01
°
OK?
I718H1110168-03
Yes
Go to Step 2.
Go to Step 3.
No
Go to Step 4.
R and P/B wire open, or
P/B wire shorted to the
ground.