Troubleshooting the DFI System
When a problem occurs with DFI system, the yellow en-
gine warning indicator light (LED) [A] goes on or blinks to
alert the rider. In addition, the condition of the problem is
stored in the memory of the ECU.
With the engine stopped and turned in the self-diagnosis
mode, the service code [A] is displayed on the LCD (Liquid
Crystal Display) by the number of two digits.
If the problem is with the following parts, the ECU can
not recognize these problem. Therefore, the yellow engine
warning indicator light (LED) does not go on, and service
code is not displayed.
LCD for Meter Unit
Fuel Pump Relay
Stick Coil Secondary Wiring and Ground Wiring
ECU Main Relay
ECU Power Source Wiring and Ground Wiring
When the service code [A] is displayed, for first ask the
rider about the conditions [B] of trouble, and then start to
determine the cause [C] of problem.
As 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 yellow engine warning indicator light (LED).
Don't rely solely on the DFI self-diagnosis function, use
FUEL SYSTEM (DFI) 3-23