Troubleshooting the DFI System
When an abnormality in the system occurs, the FI indica-
tor LED light goes on to alert the rider on the meter panel. 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 FI indicator
LED light blinks.
When due to a malfunction, the FI indicator LED light re-
mains lit, ask the rider about the conditions [B] under which
the problem occurred and try to determine the cause [C].
Don't rely solely on the DFI self-diagnosis function, use
common sense; first conduct a pre-diagnosis inspection,
check the ECU for ground and power supply, the fuel line for
no fuel leaks, and for correct pressure. The pre-diagnosis
items are not indicated by the FI indicator LED light.
Even when the DFI system is operating normally, the FI
indicator LED light [A] may light up under strong electri-
cal interference. No remedy 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 goes OFF
in 4 seconds and will not show the service code any more.
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 goes ON but the
service 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
FUEL SYSTEM (DFI) 3-23