Fuel Pump Unit Inspection; Fuel Pump Unit Removal - Honda CRF1000 Shop Manual

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Installation is in the reverse order of removal.
• A pressure release can be heard when opening the
fuel cap, but this is not blockage of the passage. If
checking for clog in the passage of the fuel tank side
is necessary, apply air pressure to the breather hose
end with the fuel filler cap opened.
• If the fuel filler cap was removed, replace the
breather seal [1] with a new one.
• Route the hoses, wires and harness properly.
• Be careful not to damage the harness and hose.
• After installing the fuel tank, make sure the drain,
air vent, overflow hose and fuel hoses are not
kinked or bound.
TORQUE:
Fuel filler cap bolt:
1.8 N·m (0.2 kgf·m, 1.3 lbf·ft)
FUEL PUMP UNIT
INSPECTION
Turn the ignition switch ON and engine stop switch " "
and confirm that the fuel pump operates for a few
seconds.
If the fuel pump does not operate, inspect as follows:
Turn the ignition switch OFF.
Disconnect the fuel pump unit 3P (Black) connector
(page 7-4).
Turn the ignition switch ON.
Measure the voltage at the wire harness side 3P (Black)
connector [1].
CONNECTION: Yellow/red (+) – Green (–)
There should be battery voltage for a few seconds.
If there is battery voltage for a few seconds, replace the
fuel pump unit.
If there is no battery voltage, inspect the following:
– Sub fuse ENG STOP 7.5 A
– Fuel pump relay (page 7-10)
– Fuel pump relay related circuit
– Open circuit in the Yellow/red or Green wire
– ECM/PCM power/ground line (page 4-40)
REMOVAL
Remove the fuel tank (page 7-6).
Disconnect the quick connect fitting from the fuel pump
unit (page 7-4).
Clean around the fuel pump unit.
Loosen the fuel pump unit mounting nuts [1] and cap
nut [2] in a crisscross pattern in 2 or 3 steps and
remove them.
Remove the fuel pump unit [3] and packing [4].
[1]
[1]
Y/R
[3]
FUEL SYSTEM
G
[1]
[2] [4]
7-7