Yamaha FJR1300AS(X) Service Manual page 562

Fault code No. 24
Diagnostic code No.
Order Item/components and probable
cause
1 Installed condition of O
2 Connections
• O sensor coupler
2
• Relay unit coupler
• Wire harness ECU coupler
• Sub-wire harness coupler
3 Open or short circuit in wire harness
and/or sub-wire harness.
4 Check fuel pressure.
5 Defective O
2
Symptom No normal signal is received from the O
— —
sensor
2
sensor
FUEL INJECTION SYSTEM
Check or maintenance job
Check for looseness or pinching. Starting the en-
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler se-
curely.
• Repair or replace if there is an
open or short circuit.
• Between O sensor coupler and
2
ECU coupler.
(black/blue–black/blue)
(gray/white–gray/white)
• Between O sensor coupler and
2
relay unit coupler.
(red/blue–red/blue)
• Between O sensor coupler and
2
sub-wire harness coupler.
(black–black)
Refer to "CHECKING THE FUEL
PRESSURE" on page 7-7.
Replace if defective.
8-85
sensor.
2
Reinstatement
method
gine, warming it
up until the
coolant temper-
ature is 60 °C
or more, and
then running it
between 2000–
3000 r/min un-
til the engine
trouble warn-
ing light turns
off.