Suzuki GSF650A Service Manual page 149

Step
2 1) Connect the ECM coupler and TO sensor coupler.
2) Dismount the TO sensor from its bracket.
3) Insert the needle pointed probes to the lead wire coupler.
4) Turn the ignition switch ON.
5) Measure the voltage at the wire side coupler between B
and B/Br wire.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Voltage ( )
TO sensor voltage (Normal)
0.4 – 1.4 V
((+) terminal: B – (–) terminal: B/Br)
V
6) Measure the voltage when it is leaned 65° and more, left
and right, from the horizontal level.
TO sensor voltage (Leaning)
3.7 – 4.4 V
((+) terminal: B – (–) terminal: B/Br)
V
(A)
Is the voltage OK?
Action
(B)
(A)
(B)
65
(B)
Engine General Information and Diagnosis:
Yes
• R, B or B/Br wire
open or shorted to
the ground, or poor
11, 22 or 29
connection.
• If wire and
connection are OK,
intermittent trouble or
faulty ECM.
• Recheck each
terminal and wire
harness for open
circuit and poor
connection.
• Replace the ECM
with a known good
one, and inspect it
again. Refer to "ECM
Removal and
Installation in Section
1C (Page 1C-1)".
I717H1110022-02
I717H1110023-03
1A-74
No
• Loosen or poor
contacts on the ECM
coupler.
• Open or short circuit.
• Replace the TO
sensor with a new
one. Refer to "TO
Sensor Removal and
Installation in Section
1C (Page 1C-3)".