Yamaha FJR13AG Service Manual page 586

Fault code No. P0657
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
09
Procedure
Actuation
50
Procedure
Probable cause of malfunc-
Item
tion and check
1 Connection of relay unit coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
2 Connection of ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
P0657
Fuel system voltage: incorrect voltage supplied to the fuel injector
and fuel pump.
Able to start engine
Able to drive vehicle
09, 50
Fuel system voltage (battery voltage)
Approximately 12.0
Set the start/engine stop switch to "
measured battery voltage with the tool display value. (If the actually mea-
sured battery voltage is low, recharge the battery.)
Actuates the relay unit five times at one-second intervals.
The "check" indicator on the Yamaha diagnostic tool screen come on
each time the relay is actuated.
Check that the relay unit is actuated five times by listening for the operat-
ing sound.
Maintenance job
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
8-109
FUEL INJECTION SYSTEM
", and then compare the actually
Confirmation of service com-
pletion
Start the engine and let it idle for
approximately 5 seconds.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is "Recovered" → Go
to item 7 and finish the service.
Condition is "Detected" → Go to
item 2.
Start the engine and let it idle for
approximately 5 seconds.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is "Recovered" → Go
to item 7 and finish the service.
Condition is "Detected" → Go to
item 3.