Yamaha FZ6RC Service Manual page 372

Fault code No.
Symptom
Fail-safe action
Diagnostic monitoring
code No.
Meter display
Checking method
Order
1
2
3
4
5
6
7
43
Incorrect voltage supplied to the fuel injector and fuel pump
Engine startup: Possible
Riding: Possible
50
The relay turns On or Off 5 times per second.
The engine warning light flashes according to the On/Off switching.
Make sure that the engine warning light flashes according to the On/Off
switching of the relay.
Item/components and
probable cause
Connection of relay unit
coupler
Check the connection of
the coupler is secure.
Remove the coupler, and
check each pin (for bend-
ing, wear, or locking).
Connection of fuel pump
coupler
Check the connection of
the coupler is secure.
Remove the coupler, and
check each pin (for bend-
ing, wear, or locking).
Connection of fuel injec-
tor coupler
Check the connection of
the coupler is secure.
Remove the coupler, and
check each pin (for bend-
ing, wear, or locking).
Connection of main har-
ness ECU coupler
Check the connection of
the coupler is secure.
Remove the coupler, and
check each pin (for bend-
ing, wear, or locking).
Continuity of wire har-
ness between the battery
and ECU coupler
Fuel injection system
relay malfunction
ECU malfunction
8-57
FUEL INJECTION SYSTEM
Check or maintenance
job
Poor connection ⇒ Con-
nect it securely, or repair/
replace the wire harness.
Poor connection ⇒ Con-
nect it securely, or repair/
replace the wire harness.
Poor connection ⇒ Con-
nect it securely, or repair/
replace the wire harness.
Poor connection ⇒ Con-
nect it securely, or repair/
replace the wire harness.
Open or short circuit ⇒
Replace the wire har-
ness.
Red–Red
Red/Blue–Red/Blue
Check in the diagnostic
mode (Code No. D50).
No operation sound of
fuel injection system
relay is heard. ⇒
Replace the relay unit.
Refer to "CHECKING
THE RELAYS" on page
.
8-83
Replace the ECU.
Sensor inspection
procedure
Start and idle the engine
for approximately 5 sec-
onds.