3-24 FUEL SYSTEM (DFI)
Troubleshooting the DFI System
Even when the DFI system is operating normally, the yel-
low engine warning indicator light (LED) may go on under
strong electrical interference. Additional measures are not
required. Turn the ignition switch to OFF to stop the indica-
If the yellow engine warning indicator light (LED) of the
motorcycle brought in for repair still goes on or blinks, check
the service code.
When the repair has been done, the yellow engine warn-
ing indicator light (LED) 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 solv-
ing 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 yellow engine warning indicator light (LED) blinks but
the service code is not displayed. To start the engine again,
raise the motorcycle, turn the ignition switch to OFF, and
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.
The DFI part connectors [A] have seals [B], including the
Join the connector and insert the needle adapters [C]
inside the seals [B] from behind the connector until the
adapter reaches the terminal.
Special Tool - Needle Adapter Set: 57001-1457
Insert the needle adapter straight along the terminal
in the connector to prevent short-circuit between
Make sure that measuring points are correct in the con-
nector, noting the position of the lock [D] and the lead
color before measurement. Do not reverse connections
of the hand tester or a digital meter.
Be careful not to short-circuit the leads of the DFI or elec-
trical system parts by contact between adapters.
Turn the ignition switch to ON and measure the voltage
with the connector joined.
Incorrect, reverse connection or short circuit by
needle adapters could damage the DFI or electrical