Suzuki SFV650, Service Manual

Page: 161 / 573

Engine General Information and Diagnosis: 1A-98
Troubleshooting (When Indicating C44 / P0130:)
CAUTION
!
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with a
needle pointed tester probe to prevent terminal damage.
Step Action Yes No
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-7)”.
3) Check the HO2 sensor coupler (1) for loose or poor
contacts.
If OK, then check the HO2 sensor lead wire continuity.
4) Disconnect the HO2 sensor coupler.
5) Turn the ignition switch ON.
6) Check the voltage between the W/G wire “A” and
ground.
Also, check the voltage between W/G wire “A” and B/Br
wire “B”.
If the sound is not hard from the tester, the circuit
condition is OK.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage (
)
HO2 sensor output voltage
Approx. 5.0 V
((+) terminal: W/G – (–) terminal: Ground, (+)
terminal: W/G – (–) terminal: B/Br)
Is the voltage OK?
Go to Step 2. Open circuit in the W/G
wire or B/Br wire.
1
I944H1110085-01
(A)
“A”
“B”
I944H1110086-02