Basic Process For Troubleshooting - Yamaha MT-09 2021 Service Manual

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.
*1
Delete the DTC.
Are DTCs displayed on the screen
after performs the problem
verification?
Yes
Do the troubleshooting according
to the DTCs of "malfunction".
Check the DTCs of "malfunction"
are not displayed on the screen.
Finished.
*1. For P0133, P0300, P0301, P0302, P0303
*2. For except P0133, P0300, P0301, P0302, P0303
No
Does the MIL (LED) work
properly?
Yes
Yes
[B] Perform the checking with the
diagnostic mode.
*2
No
Temporary failure.
9-16
FUEL INJECTION SYSTEM
No
Check the MIL (LED).