Suzuki GSF1250 Service Manual page 112

1A-43 Engine General Information and Diagnosis:
Step
3 1) Connect the ECM coupler.
2) Turn the ignition switch ON.
3) Measure the input voltage at the R wire and ground.
If OK, the measure the input voltage at the R 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)
(A)
Is the voltage OK?
Action
(B)
I718H1110035-03
Yes
Turn the ignition switch
OFF and go to Step 4.
No
Open or short circuit in
the R or B/Br wire.