Yamaha FJR13AEV(C) Service Manual page 567

Fault code No. 43
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Relay unit coupler
• Main wire harness ECU coupler
• Front cowling wire harness coupler
2 Open or short circuit in the wire har-
ness and/or sub-wire harness.
3 Malfunction or open circuit in fuel
pump relay.
Fault code No. 44
Diagnostic code No.
Order Item/components and probable
cause
1 Malfunction in ECU.
Symptom The ECU is unable to monitor the battery voltage (an open
or short circuit in the line to the ECU).
09 Fuel system voltage
Check or maintenance job
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Repair or replace if there is an
• Between relay unit coupler and
• Between relay unit coupler and
• Between relay unit coupler and
• Execute the diagnostic mode.
• Replace if defective.
• If there is no malfunction with
Symptom An error is detected while reading or writing on EEPROM
(CO adjustment value).
60 EEPROM fault cylinder No.
Check or maintenance job
• Set the faulty cylinder's exhaust
• Replace ECU if it does not re-
8-96
FUEL INJECTION SYSTEM
that may be pulled out.
the coupler.
and connect the coupler se-
curely.
open or short circuit.
ECU coupler.
(blue/yellow–blue/yellow)
(red/blue–red/blue)
main switch coupler.
(red–brown/blue)
engine stop switch coupler.
(red/black–red/black)
(Code No. 09)
the fuel pump relay, replace the
ECU.
gas volume.
1. Execute the diagnostic mode
(Code No. 60) to check the
faulty cylinder number. (If
multiple cylinders are defec-
tive, the numbers of the
faulty cylinders are displayed
alternately at 2-second inter-
vals.)
2. Execute the CO adjustment
mode and set the exhaust
gas volume of the faulty cyl-
inder to "0".
cover from the malfunction.
Reinstatement
method
Starting the en-
gine and oper-
ating it at idle.
Reinstatement
method
Turning the
main switch to
"ON".
(Readjust the
exhaust gas
volume after it
is reinstated.)