ELECTRICAL COMPONENTS
8-55
b. Measure the crankshaft position sensor
resistance.
EAM30298
CHECKING THE LEAN ANGLE SENSOR
1. Check:
•
Mounted condition of ECU
Improperly mounted
Remount.
TIP
•
The lean angle sensor is built into the ECU.
•
The lean angle sensor stops the engine in case
of a turnover.
•
To ensure that the lean angle sensor operates
correctly, do not change the installed condition
of the ECU.
EAM30299
CHECKING THE STARTER MOTOR
OPERATION
1. Check:
•
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”.
WARNING
EWA13810
• A wire that is used as a jumper lead must
have at least the same capacity of the bat-
tery lead, otherwise the jumper lead may
burn.
• This check is likely to produce sparks,
therefore, make sure no flammable gas or
fluid is in the vicinity.
b. Check the starter motor operation.
EAM30300
CHECKING THE STATOR COIL
1. Disconnect:
•
Stator coil assembly coupler
(from the wire harness)
2. Check:
•
Stator coil assembly resistance
Out of specification
Replace.
a. Connect the digital circuit tester (
) to the
stator coil assembly coupler.
b. Measure the stator coil assembly resis-
tance.
EAM30301
CHECKING THE RECTIFIER/REGULATOR
1. Check:
•
Rectifier/regulator output voltage
Out of specification
Replace.
•
Positive tester probe
Gray “1”
•
Negative tester probe
Black “2”
1
2
Gy
B
Stator coil resistance
0.512–0.768
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
•
Positive tester probe
White “1”
•
Negative tester probe
White “2”
1
2
Summary of Contents for YZ450FX 2022
Page 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY ...
Page 10: ......
Page 44: ...MOTORCYCLE CARE AND STORAGE 1 32 ...
Page 61: ...TIGHTENING TORQUES 2 16 ...
Page 62: ...CABLE ROUTING DIAGRAM 2 17 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view ...
Page 64: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view ...
Page 66: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view ...
Page 68: ...CABLE ROUTING DIAGRAM 2 23 Frame and engine top view ...
Page 70: ...CABLE ROUTING DIAGRAM 2 25 Frame and battery top view ...
Page 72: ...CABLE ROUTING DIAGRAM 2 27 Rear brake right side view ...
Page 74: ...CABLE ROUTING DIAGRAM 2 29 ...
Page 112: ...ELECTRICAL SYSTEM 3 36 ...
Page 154: ...HANDLEBAR 4 40 Throttle grip free play 3 0 6 0 mm 0 12 0 24 in ...
Page 189: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 3 1 Connecting rod 2 Oil nozzle 3 Crankshaft ...
Page 191: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 5 1 Oil filter element 2 Oil pump 3 Oil strainer ...
Page 270: ...WATER PUMP 6 9 ...
Page 280: ...THROTTLE BODY 7 9 ...
Page 283: ......
Page 284: ...IGNITION SYSTEM 8 1 EAM20142 IGNITION SYSTEM EAM30277 CIRCUIT DIAGRAM ...
Page 288: ...ELECTRIC STARTING SYSTEM 8 5 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM ...
Page 292: ...CHARGING SYSTEM 8 9 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM ...
Page 295: ...CHARGING SYSTEM 8 12 ...
Page 296: ...SIGNALING SYSTEM 8 13 EAM20154 SIGNALING SYSTEM EAM30348 CIRCUIT DIAGRAM ...
Page 300: ...FUEL INJECTION SYSTEM 8 17 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM ...
Page 325: ...FUEL INJECTION SYSTEM 8 42 ...
Page 326: ...FUEL PUMP SYSTEM 8 43 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM ...
Page 358: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 15 ...
Page 368: ...CHASSIS 10 9 ...
Page 370: ......
Page 372: ......
Page 373: ...YZ450FXN 2022 WIRING DIAGRAM BEX 2819U 11_W D indd 1 2021 05 06 15 18 37 ...
Page 374: ...YZ450FXN 2022 WIRING DIAGRAM BEX 2819U 11_W D indd 2 2021 05 06 15 18 37 ...