FUEL INJECTION SYSTEM
8-52
Fault code No.
23
Symptom
Atmospheric pressure sensor: open or short circuit
detected.
Diagnostic code No.
02
Atmospheric pressure sensor
Orde
r
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
Connections
• Atmospheric pressure sensor cou-
pler
• Main wire harness ECU coupler
• Check the coupler for any pins
that may have pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler
securely.
Reinstated
automatically if
a normal signal
is received.
2
Open or short circuit in wire harness
and/or sub wire harness 2.
• Repair or replace if there is an
open or short circuit.
• Between atmospheric pressure
sensor coupler and ECU cou-
pler.
(Black/Blue–Black/Blue)
(Pink–Pink)
(Blue–Blue)
3
Defective atmospheric pressure sen-
sor.
• Execute the diagnostic mode.
(Code No.02)
• Replace if defective.
Refer to "CHECKING THE
ATMOSPHERIC PRESSURE
SENSOR" on page 8-102.
Fault code No.
24
Symptom No normal signal is received from the O
2
sensor.
Diagnostic code No.
—
—
Orde
r
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
Installed state of O
2
sensor.
Check for looseness or pinching.
Execute the
diagnostic
mode (Code
No. 63). (Set
the engine stop
switch to “
”.)
2
Connections
• O
2
sensor coupler
• Main wire harness ECU coupler
• Check the couplers for any pins
that may be pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect the coupler
securely.
3
Open or short circuit in wire harness.
• Repair or replace if there is an
open or short circuit.
• Between O
2
sensor coupler and
ECU coupler.
(Gray/Green–Gray/Green)
(Black/Blue–Black/Blue)
4
Check fuel pressure.
• Refer to "THROTTLE BODIES"
on page 7-4.
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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