Yamaha VX110 Sport Service Manual page 252

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ELEC
IGNITION SYSTEM
• Squeeze the throttle lever to the fully
open position and hold it.
• Check the output voltage of throttle posi-
tion sensor 2 and the throttle valve open-
ing angle.
Throttle position sensor 2 output
voltage with throttle lever fully
open:
4.60–4.70 V
Throttle valve opening angle with
throttle lever fully open:
above 80° (reference data)
• Release the throttle lever from the fully
open position to the fully closed position
slowly and check the output voltage of
throttle position sensor 2 and the throttle
valve opening angle.
• Hold the throttle lever when the output
voltage of throttle position sensor 2 is
below 4.5 V and the throttle valve open-
ing angle is above 10°.
• Calculate the difference of the output
voltage of throttle position sensor 1 and
the output voltage of throttle position sen-
sor 2.
Throttle position sensor 2 output
voltage – throttle position sensor
1 output voltage = 1.9–2.1 V
Example:
If the output voltage of throttle position sen-
sor 1 is 2.5 V and the output voltage of
throttle position sensor 2 is 4.5 V, then
4.5 – 2.5 = 2.0 V
• Operate the throttle lever and check that
the output voltage of throttle position sen-
sors 1 and 2 changes continuously.
NOTE:
The maximum output voltage of throttle
position sensor 2 is 4.65 ± 0.05 V at the half
open position.
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