Suzuki AN400 Service Manual page 107

Step
2 1) Connect the TO sensor coupler.
2) Remove the TO sensor horizontally
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
Br/W and B/Br wires when holding the TO sensor
horizontally.
TO sensor voltage (Normal)
0.4 – 1.4 V
(Positive terminal: Br/W – Negative terminal: B/Br)
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
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
(Positive terminal: Br/W – Negative terminal: B/Br)
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
Is the voltage OK?
Action
V
(A)
Br/W
B/Br
I705H1110030-03
V
(A)
Br/W
B/Br
65˚
I705H1110031-04
Engine General Information and Diagnosis:
Yes
• R, Br/W or B/Br wire
open or shorted to
ground, or poor (28)
or (29) connection.
Refer to "Terminal
Alignment of ECM
Coupler (Harness
Side) (Page1A-5)".
• 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
again.
1A-44
No
• Loose or poor
contacts on the ECM
coupler.
• Open or short circuit.
• Replace the TO
sensor with a new
one.