FUEL INJECTION SYSTEM
8-65
Fault code No.
24
Symptom No normal signal is received from the O
2
sensor.
Diagnostic code No.
—
—
Order Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
Installed condition of O
2
sensor
Check for looseness or pinching.
Starting the en-
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.
2
Connections
• O
2
sensor coupler
• Relay unit coupler
• Wire harness ECU coupler
• Sub-wire harness coupler
• Front cowling wire harness coupler
• 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.
3
Open or short circuit in wire harness,
sub-wire harness, and/or front cowling
wire harness.
• Repair or replace if there is an
open or short circuit.
• Between O
2
sensor coupler and
ECU coupler.
(black/blue–black/blue)
(gray/white–gray/white)
• Between O
2
sensor coupler and
relay unit coupler.
(red/blue–red/blue)
• Between O
2
sensor coupler and
sub-wire harness coupler.
(black–black)
4
Check fuel pressure.
Refer to “CHECKING THE FUEL
PRESSURE” on page 7-7.
5
Defective O
2
sensor
Replace if defective.
Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
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