check engine light YAMAHA WR 450F 2016 User Guide

YAMAHA WR 450F 2016 User Guide WR 450F 2016 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52441/w960_52441-0.png YAMAHA WR 450F 2016 User Guide

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YAMAHA WR 450F 2016 User Guide FUEL INJECTION SYSTEM
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2 Installed condition of lean an-gle sensor. Check the installed direction 
and condition of the sensor. Push the start switch.
Fault code number is not dis-
played 
 Ser

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YAMAHA WR 450F 2016 User Guide FUEL INJECTION SYSTEM
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TIP
Disconnect the fuel pump coupler when this diagnostic tool is used.
Fault code No. 39
Item Injector: open or short circuit detected.
Fail-safe system Unable to start eng

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YAMAHA WR 450F 2016 User Guide FUEL INJECTION SYSTEM
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TIP
Before troubleshooting, disconnect the starter motor lead from the starter motor.3 Wire harness continuity. Open or short circuit 
 Re-
place the wire harness.
light

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YAMAHA WR 450F 2016 User Guide FUEL INJECTION SYSTEM
9-54
TIP
Before troubleshooting, disconnect the starter motor lead from the starter motor.4 Yamaha diagnostic tool mal-
function. Replace the Yamaha diag-
nostic tool. Push the s

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YAMAHA WR 450F 2016 User Guide FUEL INJECTION SYSTEM
9-55
TIP
Before troubleshooting, disconnect the starter motor lead from the starter relay.
Fault code No. Er-4
Item Registered data cannot be received from the Yamaha diagnos-
ti
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