The ECU supplies an input to the "check engine
light" LED on the tachometer ring and is used to
announce a sensor failure or malfunction.
LIMP-IN MODE
If a sensor fails during operation of the bike, the
ECU automatically goes to a default value for the
failed sensor, allowing the bike enough power to
run and get off the road.
The "check engine" light will activate, and the
bike will go into this mode immediately.
Acceleration will not be possible.
On EFI-equipped motorcycles, the Check Engine
light will activate until the RUN button is pressed.
The Fuel light will activate in low fuel conditions.