Checking The Speed Sensor - Yamaha YZF-R15 Service Manual

CHECKING THE SPEED SENSOR

1. Check:
• Speed sensor output voltage
Out of specification → Replace.
Output voltage reading cycle
0 V to 5.0 V to 0 V to 5.0 V
a. Connect the multimeter to the
coupler (wire harness end) as shown.
Multimeter
• Positive tester probe
gray "1"
• Negative tester probe
gray/black "2"
1
R
L/G
B/L B/L
L/R L/G
2
b. Set the main switch to "ON".
c. Elevate the front wheel and slowly rotate it.
d. Measure the voltage of gray and gray/black.
With each full rotation of the front wheel, the
voltage reading should cycle from 0 V to 5.0
V to 0 V to 5.0 V.
speed sensor
8-74
ELECTRICAL COMPONENTS