Yamaha 2008 Fazer FZ1-N Service Manual page 436

Fault code No. 43
Diagnostic code No.
Item/components and probable
Order
Connections
• Relay unit coupler (fuel pump relay)
• Main wire harness ECU coupler
1
Open or short circuit in wire harness.
2
Malfunction or open circuit in fuel
pump relay
3
Power supply to the injectors and fuel pump is not nor-
Symptom
mal.
09 Fuel system voltage (battery voltage)
cause
FUEL INJECTION SYSTEM
Check or maintenance job
• Check the couplers for any pins
that may be pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect it securely.
• Repair or replace if there is an
open or short circuit.
• Between relay unit coupler and
ECU coupler.
(Blue/Yellow–Blue/Yellow)
(Red/Blue–Red/Blue)
• Between relay unit coupler and
battery terminal.
(Red–Red)
• Between relay unit coupler and
engine stop switch coupler.
(Red/Black–Red/Black)
• Execute the diagnostic mode.
(Code No. 09)
• Replace if defective.
• If there is no malfunction with
the fuel pump relay, replace the
ECU.
8-67
Reinstatement
method
Starting the
engine and
operating it at
idle.