Suzuki SFV650 Service Manual page 141

P1654-H (Use of SDS)
Step
1 1) Turn the ignition switch OFF.
2) Remove the air cleaner box. Refer to "Air Cleaner Box
Removal and Installation in Section 1D (Page 1D-6)".
3) Check the STP sensor coupler (1) for loose or poor
contacts.
If OK, then check the STP sensor lead wire continuity.
4) Disconnect the STP sensor coupler.
5) Turn the ignition switch ON.
6) Measure the input voltage between the R wire "A" and
ground.
Also, measure the voltage between the R wire "A" and B/
Br wire "B".
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
STP sensor input voltage
4.5 – 5.5 V
((+) terminal: R – (–) terminal: Ground, (+) terminal: R
– (–) terminal: B/Br)
"B"
Is the voltage OK?
Action
1
"A"
Engine General Information and Diagnosis:
Yes
Go to Step 2.
I944H1110063-01
(A)
I822H1110064-01
1A-78
No
Open circuit in the R
wire.