Checking The Crankshaft Position Sensor; Checking The Lean Angle Sensor - Yamaha YZ 2019 Series Owner's Service Manual

Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
• Positive tester probe 
Ignition coil terminal 1 "1"
• Negative tester probe 
Spark plug lead "2"
b. Measure the secondary coil resistance.
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EAM30297
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.
Crankshaft position sensor resis-
tance
228–342 
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a. Connect the digital circuit tester () to the
crankshaft position sensor coupler.
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
• Positive tester probe 
Gray "1"
• Negative tester probe 
Black "2"
b. Measure the crankshaft position sensor re-
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1
EAM30298

CHECKING THE LEAN ANGLE SENSOR

1. Remove:
• Lean angle sensor
2. Check:
• Lean angle sensor output voltage
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a. Connect the lean angle sensor coupler to the
b. Connect the digital circuit tester (DC) to the
• Positive tester probe 
• Negative tester probe 
8-63
ELECTRICAL COMPONENTS
sistance.
(from the bracket)
Out of specification  Replace.
Lean angle sensor output voltage
Operating angle
45 
Output voltage up to operating
angle
0.4–1.4 V
Output voltage over operating an-
gle
3.7–4.4 V
wire harness.
lean angle sensor coupler as shown.
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
Test harness– lean angle sensor
(6P)
90890-03209
Test harness– lean angle sensor
(6P)
YU-03209
Yellow/Green "1"
Black/Blue "2"
1 2
Gy B