C24 " " O O R R " " C25 " " Ignition Coil Malfunction - HYOSUNG AQUILA 650 FI Service Manual

4-1-31 FI SYSTEM DIAGNOSIS
◈ Step 2
1) Connect the TO sensor coupler.
2) Insert the needle pointed probe to the lead wire
coupler.
3) Turn the ignition switch "ON" position.
4) Measure the voltage at the wire side coupler
between OB and GR wires of the TO sensor at
horizontal.
TO sensor voltage
Also, measure the voltage when leaning of the
motorcycle.
5) Measure the voltage when it is leaned more than
65 。 , left and right, from the horizontal level.
TO sensor voltage
Tester knob indication : Voltage (
Is the voltage OK?
● O B , B or GR wire open or
shorted to ground, or poor � , ④
or 59
● If wire and connection are OK,
YES
intermittent trouble or faulty ECU.
● Recheck each terminal and wire
harness for open circuit and poor
connection.
● Loose or poor contacts on the
ECU coupler.
● Open or short circuit in the OB
NO
wire or GR wire.
● Replace the TO sensor with a
new one.
"C24" or "C25" IGNITION COIL MALFUNCTION
� Refer to the IGNITION COIL for details.
[Refer to the service manual 『
Refer to the service manual 『
0.4 ~ 1.4 V
at normal condition
( � OB - � GR )
3.7 ~ 4.4 V
at leaned more than 65 。
( � OB - �
GR )
connection.
(99000-51210) 』 page 6-5,
(99000-94810) 』 page 6-5]
)
59
42
④
�
ECU Coupler