Yamaha YZF-R1 Series Service Manual page 510

EAS32917
BASIC PROCESS FOR TROUBLESHOOTING
This section describes the basic process about fuel injection system troubleshooting.
But because a work procedure varies depending to symptom and DTC, check and repair it according
to applicable troubleshooting.
When turning the main switch to
"ON", does the MIL come on?
Yes
The MIL goes off after 2 seconds?
No
Still on/flash.
[A] Check the DTC.
Do the troubleshooting according
to the DTCs of "malfunction".
Check the DTCs of "malfunction"
are not displayed on the screen.
Finished.
No
Does the MIL (LED) work
properly?
Yes
Yes
[B] Perform the checking with the
diagnostic mode.
9-13
FUEL INJECTION SYSTEM
No
Check the MIL (LED).