Yamaha R15 2022 Service Manual page 482

Ignition checker
INS-007
(90890-06754)
2. Spark plug cap
c. Set the main switch to "ON" and the
engine stop/start switch to " ".
d. Measure the ignition spark gap "a".
e. Crank the engine by pushing the start
switch " " and gradually increase the
spark gap until a misfire occurs.
EAS30560
CHECKING THE CRANKSHAFT POSITION
SENSOR
1. Disconnect:
• Crankshaft position sensor coupler
(from the wire harness)
2. Check:
• Crankshaft position sensor resistance
Out of specification → Replace the crank-
shaft position sensor/stator assembly.
Crankshaft position sensor resis-
tance
228–342 Ω
a. Connect the multimeter (Ω × 100) to the
crankshaft position sensor coupler as
shown.
Multimeter
INS-003
(90890-03189)
• Positive tester probe →
red "1"
• Negative tester probe →
white "2"
ELECTRICAL COMPONENTS
EAS30561
CHECKING THE LEAN ANGLE SENSOR
1. Remove:
2. Check:
EAS30562
CHECKING THE STARTER MOTOR
OPERATION
1. Check:
8-149
2
W
R
1
b. Measure the crankshaft position sensor
resistance.
• Lean angle sensor
• Lean angle sensor output voltage
Out of specification → Replace.
Lean angle sensor output voltage
Operating angle
50 °
Output voltage up to operating
angle
0.4–1.4 V
Output voltage over operating
angle
3.7–4.4 V
Connecting the Yamaha diagnostic tool.
Refer to "FUEL INJECTION SYSTEM" on
page 8-28.
• Starter motor operation
Does not operate → Perform the electric
starting system troubleshooting, starting with
step 4.
Refer to "TROUBLESHOOTING" on page
8-7.
a. Connect the positive battery terminal "1"
and starter motor lead "2" with a jumper
lead "3".
ELEC – +