Suzuki GSX-R750 Service Manual page 118

1A-46 Engine General Information and Diagnosis:
C14 (Use of mode select switch)
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 measure the TP sensor input voltage.
5) Disconnect the TP sensor coupler.
6) Turn the ignition switch ON.
7) Measure the input voltage between the R wire and
ground.
If OK, then measure the input voltage between the R
wire and B/Br wire.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
TP sensor input voltage
4.5 – 5.5 V
((+) terminal: R – (–) terminal: Ground, (+) terminal: R
– (–) terminal: B/Br)
Is the voltage OK?
Action
1
V
Yes
Go to Step 3.
I837H1110022-01
(A)
I823H1110026-04
No
• Loose or poor
contacts on the ECM
coupler.
• Open or short circuit
in the R or B/Br wire.