Yamaha F30B 2018, Service Manual

Page: 121 / 348

5-43
6Y 8 Multifunction Meters sensor
Checking the speed sensor
1. Measure:
• Speed sensor input voltage
Out of specification

Check the wire har-
ness for continuity.
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a. Disconnect the speed sensor coupler “a”.
b. Turn the engine start switch to ON, and
then measure the input voltage at the
speed sensor coupler.
c. Connect the speed sensor coupler.
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2. Measure:
• Speed sensor output voltage
Out of specification

Replace the speed
sensor.
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a. Remove the speed sensor, and then con-
nect the pressure pump “1” and special
service tool “2”.
b. Turn the engine start switch to ON.
c. Apply positive pressure to the speed sen-
sor slowly, and then measure the output
voltage.
d. Turn the engine start switch to OFF, and
then disconnect the special service tool
and pressure pump.
e. Install the speed sensor.
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Input voltage
5 V
Orange (Or)–Black (B)
Output voltage at 392 kPa (3.9
kgf/cm², 57 psi) (reference data)
2.5 V
Output voltage at 784 kPa (7.8
kgf/cm², 114 psi) (reference data)
4.5 V
Blue/Red (L/R)–Black (B)
B Or
a
Pressure pump “1”
(commercially available)
Test harness (3 pins) “2”
90890-06869
Test harness (3 pins) “2”
YB-06869
B
B G G/ W
O
L
2
2
1