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FUEL SYSTEM (DFI) 3-17
Troubleshooting the DF I System
Outline
Outline
When an abnormality in the system occurs, the FI indica-
tor LED (Light Emitting Diode) light goes on to alert the rider
on the meter panel. In addition, the condition of the problem
is stored in the memory of the EC U (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 FI indicator LED light blinks.
When due to a malfunction, the FI indicator LED light re-
mains lit, ask the rider about the c onditions [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 FI indicator LED light. D on’t rely
solely on the D FI self-diagnosis function, use common
sense.
Even when the DFI system is operating normally, the FI
indicator LED light [A] may light up under strong electrical in-
terference. No repair needed. Turn the ignition SW (switch)
OFF to stop the indicator light.
When the FI indicator LED light goes on and the motor-
cycle is brought in for repair, check the service codes.
When the repair has been done, the LED light doesn’t go
on. But the service codes stored in memory are not erased
to preserve the problem history, and the LED light can dis-
play the codes in the self-diagnosis mode. The problem
history is referred when solving unstable problems.
When the motorcycle is down, the vehicle-down sensor
is turned OFF and the ECU shuts off the fuel injectors and
ignition system. The FI indicator LED light blinks but the
fault code cannot be displayed. The ignition SW is left ON.
If the starter button is pushed, the electric starter turns but
the engine doesn’t start. To start the engine again, raise
the motorcycle, turn the ignition SW OFF, and then ON. The
vehicle-down sensor is turned ON and the LED light goes
OFF.