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FUEL SYSTEM (DFI) 3-15
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 t he ECU.
○
To prevent dam age to the DFI parts, do not disconnect the
battery cables or any other electrical connections when
the ignition switch is on or while the engine is running.
○
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 switch ON while any of the DFI
electrical connectors are disconnected. The ECU memo-
rizes 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 work and ter-
minals could corrode.
○
If a transceiver is installed on the motorcycle, 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 switch. Otherwise, the fuel pump will operate and
fuel will spout from the fuel hose.
○
Do not operate the fuel pump if the 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 switch. Conversely, make
sure that all the DFI electrical connections are firmly re-
connected before starting the engine.
○
Whenever the DFI electrical connections are to be dis-
connected, first turn off the ignition switch, and disconnect
the battery (–) terminal. Do not pull the lead, only the con-
nector. Conversely, make sure that all the DFI electrical
connections are firmly r econnected before starting the en-
gine.
○
When disconnecting the vehicle-down sensor connector,
raise the lock of the connector. Push the lock of the other
connectors.