Suzuki GSX-R750 Service Manual page 119

P0120-H (Use of SDS)
Step
1 1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. Refer to "Fuel Tank
Removal and Installation in Section 1G (Page 1G-9)".
3) Remove the right under cowling. Refer to "Exterior Parts
Removal and Installation in Section 9D (Page 9D-11)".
4) Check the TP sensor coupler (1) for loose or poor
contacts.
If OK, then check the TP sensor lead wire continuity.
5) Disconnect the TP sensor coupler.
6) Check the continuity between the P/B wire and R wire.
If the sound is not heard from the tester, the circuit
condition is OK.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Continuity (
Action
1
)
(A)
Engine General Information and Diagnosis:
Yes
Go to Step 3.
I837H1110023-01
I823H1110027-02
1A-47
No
P/B wire shorted to
VCC, or B/Br wire open.