Troubleshooting the DFI System
After measurement, remove the needle adapters and ap-
ply silicone sealant to the seals [A] of the connector [B]
Silicone Sealant (Kawasaki Bond: 56019-120)
- Seals of Connectors
Always check battery condition before replacing the DFI
parts. A fully charged battery is a must for conducting
accurate tests of the DFI system.
Resistance Check Method
This method is simple. No need for a fully charged battery
and the needle adapter. Just do the following especially
when a sensor [A] is suspect.
Turn the ignition SW OFF and disconnect the connectors.
Inspect the sensor resistance, using a digital meter (see
each Sensor Inspection in this chapter).
Inspect the wiring and connections [B] for continuity, using
the hand tester [C] (special tool, analog tester) rather than
a digital meter.
Special Tool - Hand Tester: 57001–1394
If the sensor, the wiring and connections are good, in-
spect the ECU for its ground and power supply (see this
chapter). If the ground and power supply are good, the
ECU is suspect. Replace the ECU.
Trouble may involve one or in some cases all items.
Never replace a defective part without determining what
CAUSED the problem. If the problem was caused by
some other item or items, they too must be repaired or
replaced, or the new replacement part will soon fail again.
Measure coil winding resistance when the DFI part is cold
(at room temperature).
Make sure all connectors in the circuit are clean and tight,
and examine wires for signs of burning, fraying, short,
etc. Deteriorated wires and bad connections can cause
reappearance of problems and unstable operation of the
FUEL SYSTEM (DFI) 3-25