Fuel Pump Relay - Honda CBR650F Service Manual

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FUEL PUMP RELAY

CIRCUIT INSPECTION
For relay inspection (page 21-23).
Remove the fuel pump relay (page 21-23).
RELAY SWITCH/COIL POWER INPUT LINE
Measure the voltage between each fuel pump relay 4P
connector [1] terminal and ground.
CONNECTION: B (+) – Ground (–)
There should be battery voltage when the ignition
switch is turned ON with the engine stop switch " ".
If there is no voltage, check the following:
– Black/white wire in the relay connector between the
main relay and fuel pump relay for open circuit
– CBR650F/FA:
between the engine stop switch and fuel pump relay
for open circuit
– CB650F/FA: Black/yellow wire between the engine
stop switch and fuel pump relay for open circuit
– Main relay and its circuit (page 4-41)
SIGNAL LINE
Check for continuity between the fuel pump relay 4P
connector [1] terminal and ground.
CONNECTION: C – Ground
There should be no continuity with the ignition switch
OFF.
If there is continuity, check for short circuit in the Brown/
black wire between the relay connector and ECM.
There should be continuity for a few seconds when the
ignition switch is turned ON with the engine stop switch
" ".
If there is no continuity, check for open circuit in the
Brown/black wire between the relay connector and
ECM.
SECONDARY AIR SUPPLY SYSTEM
SYSTEM INSPECTION
Start the engine and warm it up to normal operating
temperature.
Stop the engine.
Lift the fuel tank and support it (page 3-4).
Disconnect the air supply hose [1] from the air cleaner
housing.
Check that the hose joint (secondary air intake port) of
the air cleaner housing is clean and free of carbon
deposits.
Check the PAIR check valve if the port is carbon fouled
(page 7-22).
D (+) – Ground (–)
Black/yellow or Black/red wire
[1]
A
B
D
[1]
FUEL SYSTEM
[1]
B (Bl/W)
A
C
D (Bl/Y)
C (Br/Bl)
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