3-16 FUEL SYSTEM (DFI)
Troubleshooting the DFI System
When an abnormality in the system occurs, the orange FI
warning indicator light (LED) goes on to alert the rider. In
addition, the condition of the problem is stored in the mem-
ory of the ECU (Electronic Control Unit). With the engine
stopped and turned in the self-diagnosis mode, the service
code [A] is indicated by the number of times the orange FI
warning indicator light (LED) blinks.
When due to a malfunction, the orange FI warning indica-
tor light (LED) remains lit, ask the rider about the conditions
[B] under which the problem occurred and try to determine
the cause [C].
First, conduct a self-diagnosis inspection and then a non
-self-diagnosis inspection. The non-self-diagnosis items
are not indicated by the orange FI warning indicator light
(LED). Don't rely solely on the DFI self-diagnosis function,
use common sense.
If the orange FI warning indicator light (LED) goes on by
kicking the kick pedal about 10 times, these parts are bro-
Even when the DFI system is operating normally, the or-
ange FI warning indicator light (LED) may light up under
strong electrical interference. No repair needed.
When the orange FI warning indicator light (LED) goes on
and the motorcycle is brought in for repair, check the service
When the repair has been done, the light doesn't go on.
But the service codes stored in memory are not erased to
preserve the problem history, and the light can display the
codes in the self-diagnosis mode. The problem history is
referred when solving unstable problems.
Much of the DFI system troubleshooting work consists
of confirming continuity of the wiring. The DFI parts are
assembled and adjusted with precision, and it is impossible
to disassemble or repair them.