Suzuki GSX-R750 Service Manual page 136

1A-64 Engine General Information and Diagnosis:
P1450-H (Use of SDS)
Step
1 1) Turn the ignition switch OFF.
2) Remove the front seat. Refer to "Exterior Parts Removal
and Installation in Section 9D (Page 9D-11)".
3) Check the AP sensor coupler (1) for loose or poor
contacts.
If OK, then check the AP sensor lead wire continuity.
4) Disconnect the AP sensor coupler.
5) Check the continuity between the R wire and G/Y 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)
Yes
Go to Step 2.
I837H1110042-01
I823H1110017-05
No
G/Y wire shorted to
VCC, or B/Br wire open.