Troubleshooting the DFI System
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 warning indicator light (LED) and FI warning symbol.
Don't rely solely on the DFI self-diagnosis function, use
Even when the DFI system is operating normally, the
warning indicator light (LED) and FI warning symbol may
blink under strong electrical interference. Additional mea-
sures are not required. Turn the ignition switch OFF to stop
the indicator light and symbol.
If the warning indicator light (LED) and FI warning symbol
of the motorcycle brought in for repair still blinks, check the
When the repair has been done, the FI warning symbol
goes off. But the service codes stored in memory of the
ECU are not erased to preserve the problem history. The
problem history can be referred using the KDS (Kawasaki
Diagnostic System) when solving unstable problems.
When the motorcycle is down, the vehicle-down sensor
operates and the ECU shuts off the fuel pump relay, fuel in-
jectors and ignition system. The ignition switch is left ON. If
the starter button is pushed, the electric starter turns but the
engine does not start. When the starter button is pushed,
the warning indicator light (LED) and FI warning symbol
blink but the service code is not displayed. To start the
engine again, raise the motorcycle, turn the ignition switch
OFF, and then ON.
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.
FUEL SYSTEM (DFI) 3-25