YAMAHA YZ450F 2016 Owners Manual

YAMAHA YZ450F 2016 Owners Manual YZ450F 2016 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/53973/w960_53973-0.png YAMAHA YZ450F 2016 Owners Manual
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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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Fault code 16
SymptomThrottle position sensor: stuck throttle position sensor is de-
tected.
Fail-safe systemAble to start engine
Able to drive vehicle
Diagnostic code No.01

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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TIP
Make sure that the machine is completely cold before checking the coolant temperature sensor.
Fault code 21
Symptom Coolant temperature sensor: open or short circuit det

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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TIP
Make sure that the machine is completely cold before checking the intake air temperature sensor. 6 Faulty ECU Replace the ECU.
Fault code 22
Symptom Intake air temperatu

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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5 Defective intake air tempera-
ture sensor.Execute the diagnostic mode. 
(Code No. 05)
When the machine is cold, 
displayed temperature is 
close to the ambient temper-
atu

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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Fault code 33
SymptomIgnition coil: open or short circuit detected in the primary lead 
of the ignition coil.
Fail-safe systemUnable to start engine
Unable to drive vehicle

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
8-24
TIP
Disconnect the fuel pump coupler when this diagnostic tool is used. 6 Faulty  ECU Execute the diagnostic mode. 
(Code No. 30)
No spark  Replace the 
ECU.
Fault code 3

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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4 Connection of sub wire har-
ness coupler.
Check the locking condition 
of the coupler.
Disconnect the coupler, and 
check the pins (for bent or 
broken terminals and locki

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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Fault code 44
SymptomEEPROM fault code No.: an error is detected while reading or 
writing on EEPROM.
Fail-safe systemAble/Unable to start engine
Able/Unable to drive vehicl

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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Fault code 46
SymptomVehicle system power supply: normal voltage is not supplied 
to the ECU.
Fail-safe systemAble/Unable to start engine
Able/Unable to drive vehicle
Diagno

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YAMAHA YZ450F 2016  Owners Manual FUEL INJECTION SYSTEM
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Fault code 50
Symptom ECU: faulty ECU memory
Fail-safe systemUnable to start engine
Unable to drive vehicle
Diagnostic code No.—
Diagnostic tool display—
Procedure—
Or
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