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FUEL SYSTEM (DFI) 3-15
DFI Servicing Precautions
DFI Servicing Precautions
There are a number of important precautions that should
be followed servicing the DFI system.
○
This DFI system is designed to be used with a 12 V sealed
battery as its power source. Do not use any other battery
except for a 12 V sealed battery as a power source.
○
Do not reverse the battery cable connections. This will
damage the ECU.
○
To prevent damage to the DFI parts, do not disconnect the
battery cables or any other electrical connections when
the ignition SW (switch) is on or while the engine is run-
ning.
○
Take care not to short the leads that are directly con-
nected to the battery positive (+) terminal to the chassis
ground.
○
When charging, remove the battery from the motorcycle.
This is to prevent ECU damage by excessive voltage.
○
Do not turn the ignition SW ON while any of the DFI elec-
trical connectors are disconnected. The ECU memorizes
service codes.
○
Do not spray water on the electrical parts, DFI parts, con-
nectors, leads, and wiring. Never water a vehicle with
connectors unplugged because seals don’t w ork and ter-
minals could corrode.
○
If a t ransceiver is installed on the m otorcycle, make sure
that the operation of the DFI system is not influenced by
electric wave radiated from the antenna. Check operation
of the system with the engine at idle. Locate the antenna
as far as possible away from the ECU.
○
When any fuel hose is disconnected, do not turn on the
ignition SW. Otherwise, the fuel pump w ill operate and
fuel will spout from the fuel hose.
○
Do not operate the fuel pump if t he pump is completely
dry. This is to prevent pump seizure.
○
Before removing the fuel system parts, blow the outer sur-
faces of these parts clean with compressed air.
○
When any fuel hose is disconnected, fuel may spout out
by residual pressure in the fuel line. Cover the hose joint
with a piece of clean cloth to prevent fuel spillage.
○
To prevent corrosion and deposits in the fuel system, do
not add to fuel any fuel antifreeze chemicals.
○
Whenever the DFI electrical connections are to be discon-
nected, first turn off the ignition SW (switch). Conversely,
make sure that all the DFI electrical connections are firmly
reconnected before s tarting the engine.